PIC24FJ64GB004 Family
Data Sheet
28/44-Pin, 16-Bit,
Flash Microcontrollers
with USB On-The-Go (OTG)
and nanoWatt XLP Technology
2010 Microchip Technology Inc.
DS39940D
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
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Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART,
PIC32 logo, rfPIC and UNI/O are registered trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,
MXDEV, MXLAB, SEEVAL and The Embedded Control
Solutions Company are registered trademarks of Microchip
Technology Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial
Programming, ICSP, Mindi, MiWi, MPASM, MPLAB Certified
logo, MPLIB, MPLINK, mTouch, Octopus, Omniscient Code
Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,
PICtail, REAL ICE, rfLAB, Select Mode, Total Endurance,
TSHARC, UniWinDriver, WiperLock and ZENA are
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2010, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 978-1-60932-439-1
Microchip received ISO/TS-16949:2002 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
DS39940D-page 2
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
28/44-Pin, 16-Bit, Flash Microcontrollers with
USB On-The-Go (OTG) and nanoWatt XLP Technology
Universal Serial Bus Features:
Power Management Modes:
• USB v2.0 On-The-Go (OTG) Compliant
• Dual Role Capable – can act as either Host or Peripheral
• Low-Speed (1.5 Mb/s) and Full-Speed (12 Mb/s) USB
Operation in Host mode
• Full-Speed USB Operation in Device mode
• High-Precision PLL for USB
• 0.25% Accuracy using Internal Oscillator – No External
Crystal Required
• Internal Voltage Boost Assist for USB Bus Voltage
Generation
• Interface for Off-Chip Charge Pump for USB Bus
Voltage Generation
• Supports up to 32 Endpoints (16 bidirectional):
- USB module can use any RAM location on the
device as USB endpoint buffers
• On-Chip USB Transceiver
• Interface for Off-Chip USB Transceiver
• Supports Control, Interrupt, Isochronous and Bulk Transfers
• On-Chip Pull-up and Pull-Down Resistors
• Selectable Power Management modes with nanoWatt
XLP Technology for Extremely Low Power:
- Deep Sleep mode allows near total power-down
(20 nA typical and 500 nA with RTCC or WDT),
along with the ability to wake-up on external triggers
or self-wake on programmable WDT or RTCC alarm
- Extreme low-power DSBOR for Deep Sleep,
LPBOR for all other modes
- Sleep mode shuts down peripherals and core for
substantial power reduction, fast wake-up
- Idle mode shuts down the CPU and peripherals for
significant power reduction, down to 4.5 A typical
- Doze mode enables CPU clock to run slower than
peripherals
- Alternate Clock modes allow on-the-fly switching to
a lower clock speed for selective power reduction
during Run mode down to 15 A typical
Special Microcontroller Features:
•
•
•
•
•
High-Performance CPU:
• Modified Harvard Architecture
• Up to 16 MIPS Operation @ 32 MHz
• 8 MHz Internal Oscillator with 0.25% Typical Accuracy:
- 96 MHz PLL
- Multiple divide options
• 17-Bit x 17-Bit Single-Cycle Hardware
Fractional/integer Multiplier
• 32-Bit by 16-Bit Hardware Divider
• 16 x 16-Bit Working Register Array
• C Compiler Optimized Instruction Set Architecture:
- 76 base instructions
- Flexible addressing modes
• Linear Program Memory Addressing up to 12 Mbytes
• Linear Data Memory Addressing up to 64 Kbytes
• Two Address Generation Units for Separate Read and
Write Addressing of Data Memory
•
•
•
•
•
•
Operating Voltage Range of 2.0V to 3.6V
Self-Reprogrammable under Software Control
5.5V Tolerant Input (digital pins only)
High-Current Sink/Source (18 mA/18 mA) on All I/O Pins
Flash Program Memory:
- 10,000 erase/write cycle endurance (minimum)
- 20-year data retention minimum
- Selectable write protection boundary
Fail-Safe Clock Monitor Operation:
- Detects clock failure and switches to on-chip
FRC oscillator
On-Chip 2.5V Regulator
Power-on Reset (POR), Power-up Timer (PWRT)
and Oscillator Start-up Timer (OST)
Two Flexible Watchdog Timers (WDT) for Reliable
Operation:
- Standard programmable WDT for normal operation
- Extreme low-power WDT with programmable
period of 2 ms to 26 days for Deep Sleep mode
In-Circuit Serial Programming™ (ICSP™) and
In-Circuit Debug (ICD) via 2 Pins
JTAG Boundary Scan Support
PIC24FJ
Device
Pins
Program Memory
(Bytes)
SRAM
(Bytes)
Remappable
Pins
Timers
16-Bit
Capture
Input
Compare/PWM
Output
UART w/
IrDA®
SPI
I2C™
10-Bit A/D
(ch)
Comparators
PMP/PSP
RTCC
CTMU
USB OTG
Remappable Peripherals
32GB002
28
32K
8K
15
5
5
5
2
2
2
9
3
Y
Y
Y
Y
64GB002
28
64K
8K
15
5
5
5
2
2
2
9
3
Y
Y
Y
Y
32GB004
44
32K
8K
25
5
5
5
2
2
2
13
3
Y
Y
Y
Y
64GB004
44
64K
8K
25
5
5
5
2
2
2
13
3
Y
Y
Y
Y
2010 Microchip Technology Inc.
DS39940D-page 3
PIC24FJ64GB004 FAMILY
Analog Features:
• 10-Bit, up to 13-Channel Analog-to-Digital (A/D)
Converter:
- 500 ksps conversion rate
- Conversion available during Sleep and Idle
• Three Analog Comparators with Programmable
Input/Output Configuration
• Charge Time Measurement Unit (CTMU):
- Supports capacitive touch sensing for touch
screens and capacitive switches
- Provides high-resolution time measurement and
simple temperature sensing
Peripheral Features:
• Peripheral Pin Select:
- Allows independent I/O mapping of many peripherals
- Up to 25 available pins (44-pin devices)
- Continuous hardware integrity checking and safety
interlocks prevent unintentional configuration changes
• 8-Bit Parallel Master Port (PMP/PSP):
- Up to 16-bit multiplexed addressing, with up to
11 dedicated address pins on 44-pin devices
- Programmable polarity on control lines
- Supports legacy Parallel Slave Port
• Hardware Real-Time Clock/Calendar (RTCC):
- Provides clock, calendar and alarm functions
- Functions even in Deep Sleep mode
• Two 3-Wire/4-Wire SPI modules (support 4 Frame
modes) with 8-Level FIFO Buffer
• Two I2C™ modules support Multi-Master/Slave mode
and 7-Bit/10-Bit Addressing
• Two UART modules:
- Supports RS-485, RS-232 and LIN/J2602
- On-chip hardware encoder/decoder for IrDA®
- Auto-wake-up on Start bit
- Auto-Baud Detect (ABD)
- 4-level deep FIFO buffer
• Five 16-Bit Timers/Counters with Programmable
Prescaler
• Five 16-Bit Capture Inputs, each with a Dedicated Time
Base
• Five 16-Bit Compare/PWM Outputs, each with a
Dedicated Time Base
• Programmable, 32-Bit Cyclic Redundancy Check (CRC)
Generator
• Configurable Open-Drain Outputs on Digital I/O Pins
• Up to 3 External Interrupt Sources
Pin Diagrams
28-Pin SPDIP, SOIC, SSOP(1)
Legend:
Note 1:
2:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
PIC24FJXXGB002
MCLR
PGED3/AN0/C3INC/VREF+/ASDA1(2)/RP5/PMD7/CTED1/VBUSVLD/VCMPST1/CN2/RA0
PGEC3/AN1/C3IND/VREF-/ASCL1(2)/RP6/PMD6/CTED2/SESSVLD/VCMPST2/CN3/RA1
PGED1/AN2/C2INB/DPH/RP0/PMD0/CN4/RB0
PGEC1/AN3/C2INA/DMH/RP1/PMD1/CN5/RB1
AN4/C1INB/DPLN/SDA2/RP2/PMD2/CN6/RB2
AN5/C1INA/DMLN/RTCC/SCL2/RP3/PMWR/CN7/RB3
VSS
OSCI/CLKI/C1IND/PMCS1/CN30/RA2
OSCO/CLKO/PMA0/CN29/RA3
SOSCI/C2IND/RP4/PMBE/CN1/RB4
SOSCO/SCLKI/T1CK/C2INC/PMA1/CN0/RA4
VDD
TMS/USBID/CN27/RB5
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VDD
VSS
AN9/C3INA/VBUSCHG/RP15/VBUSST/CN11/RB15
AN10/C3INB/CVREF/VCPCON/VBUSON/RP14/CN12/RB14
AN11/C1INC/RP13/PMRD/REFO/SESSEND/CN13/RB13
VUSB
PGEC2/D-/VMIO/RP11/CN15/RB11
PGED2/D+/VPIO/RP10/CN16/RB10
VCAP/VDDCORE
DISVREG
TDO/SDA1/RP9/PMD3/RCV/CN21/RB9
TCK/USBOEN/SCL1/RP8/PMD4/CN22/RB8
TDI/RP7/PMD5/INT0/CN23/RB7
VBUS
RPn represents remappable peripheral pins.
Gray shading indicates 5.5V tolerant input pins.
Alternative multiplexing for SDA1 and SCL1 when the I2C1SEL bit is set.
DS39940D-page 4
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
AN5/C1INA/DMLN/RTCC/SCL2/RP3/PMWR/CN7/RB3
VSS
SOSCI/C2IND/RP4/PMBE/CN1/RB4
OSCI/CLKI/C1IND/PMCS1/CN30/RA2
OSCO/CLKO/PMA0/CN29/RA3
Legend:
Note 1:
2:
3:
VDD
VSS
AN9/C3INA/VBUSCHG/RP15/VBUSST/CN11/RB15
AN10/C3INB/CVREF/VCPCON/VBUSON/RP14/CN12/RB14
28 27 26 25 24 23 22
1
21
2
20
3
19
4 PIC24FJXXGB00218
5
17
6
16
7
15
8 9 10 11 12 13 14
AN11/C1INC/RP13/PMRD/REFO/SESSEND/CN13/RB13
VUSB
PGEC2/D-/VMIO/RP11/CN15/RB11
PGED2/D+/VPIO/RP10/CN16/RB10
VCAP/VDDCORE
DISVREG
TDO/SDA1/RP9/PMD3/RCV/CN21/RB9
TDI/RP7/PMD5/INT0/CN23/RB7
TCK/USBOEN/SCL1/RP8/PMD4/CN22/RB8
PGED1/AN2/C2INB/DPH/RP0/PMD0/CN4/RB0
PGEC1/AN3/C2INA/DMH/RP1/PMD1/CN5/RB1
AN4/C1INB/DPLN/SDA2/RP2/PMD2/CN6/RB2
SOSCO/SCLKI/T1CK/C2INC/PMA1/CN0/RA4
VDD
TMS/USBID//CN27/RB5
VBUS
28-Pin QFN(1,3)
PGEC3/AN1/C3IND/VREF-/ASCL1(2)/RP6/PMD6/CTED2/SESSVLD/VCMPST2/CN3/RA1
PGED3/AN0/C3INC/VREF+/ASDA1(2)/RP5/PMD7/CTED1/VBUSVLD/VCMPST1/CN2/RA0
MCLR
Pin Diagrams
RPn represents remappable peripheral pins.
Gray shading indicates 5.5V tolerant input pins.
Alternative multiplexing for SDA1 and SCL1 when the I2C1SEL bit is set.
The back pad on QFN devices should be connected to VSS.
2010 Microchip Technology Inc.
DS39940D-page 5
PIC24FJ64GB004 FAMILY
Pin Diagrams
44-PIN TQFP,
44
43
42
41
40
39
38
37
36
35
34
USBOEN/SCL1/RP8/PMD4/CN22/RB8
RP7/PMD5/INT0/CN23/RB7
VBUS
CN27/USBID/RB5
VDD
VSS
RP21/PMA3/CN26/RC5
RP20/PMA4/CN25/RC4
AN12/RP19/PMBE/CN28/RC3
TDI/PMA9/RA9
SOSCO/SCLKI/T1CK/C2INC/CN0/RA4
44-Pin QFN(1,3)
PIC24FJXXGB004
12
13
14
15
16
17
18
19
20
21
22
1
2
3
4
5
6
7
8
9
10
11
33
32
31
30
29
28
27
26
25
24
23
SOSCI/C2IND/RP4/CN1/RB4
TDO/PMA8/RA8
OSCO/CLKO/CN29/RA3
OSCI/CLKI/C1IND/PMCS1/CN30/RA2
VSS
VDD
AN8/RP18/PMA2/CN10/RC2
AN7/RP17/CN9/RC1
AN6/RP16/CN8/RC0
AN5/C1INA/DMLN/RTCC/SCL2/RP3/PMWR/CN7/RB3
AN4/C1INB/DPLN/SDA2/RP2/PMD2/CN6/RB2
TMS/PMA10/RA10
TCK/PMA7/RA7
AN10/C3INB/CVREF/VCPCON/VBUSON/RP14/CN12/RB14
AN9/C3INA/VBUSCHG/RP15/VBUSST/CN11/RB15
AVSS
AVDD
MCLR
PGED3/AN0/C3INC/VREF+/ASDA1(2)/RP5/PMD7/CTED1/VBUSVLD/VCMPST1/CN2/RA0
PGEC3/AN1/C3IND/VREF-/ASCL1(2)/RP6/PMD6/CTED2/SESSVLD/VCMPST2/CN3/RA1
PGED1/AN2/C2INB/DPH/RP0/PMD0/CN4/RB0
PGEC1/AN3/C2INA/DMH/RP1/PMD1/CN5/RB1
SDA1/RP9/PMD3/RCV/CN21/RB9
RP22/PMA1/CN18/RC6
RP23/PMA0/CN17/RC7
RP24/PMA5/CN20/RC8
RP25/PMA6/CN19/RC9
DISVREG
VCAP/VDDCORE
PGED2/D+/VPIO/RP10/CN16/RB10
PGEC2/D-/VMIO/RP11/CN15/RB11
VUSB
AN11/C1INC/RP13/REFO/PMRD/SESSEND/CN13/RB13
Legend:
Note 1:
2:
3:
DS39940D-page 6
RPn represents remappable peripheral pins.
Gray shading indicates 5.5V tolerant input pins.
Alternative multiplexing for SDA1 and SCL1 when the I2C1SEL bit is set.
The back pad on QFN devices should be connected to VSS.
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
Table of Contents
1.0 Device Overview .......................................................................................................................................................................... 9
2.0 Guidelines for Getting Started with 16-bit Microcontrollers ........................................................................................................ 19
3.0 CPU ........................................................................................................................................................................................... 25
4.0 Memory Organization ................................................................................................................................................................. 31
5.0 Flash Program Memory.............................................................................................................................................................. 55
6.0 Resets ........................................................................................................................................................................................ 63
7.0 Interrupt Controller ..................................................................................................................................................................... 69
8.0 Oscillator Configuration ............................................................................................................................................................ 107
9.0 Power-Saving Features............................................................................................................................................................ 117
10.0 I/O Ports ................................................................................................................................................................................... 127
11.0 Timer1 ...................................................................................................................................................................................... 149
12.0 Timer2/3 and Timer4/5 ............................................................................................................................................................ 151
13.0 Input Capture with Dedicated Timers ....................................................................................................................................... 157
14.0 Output Compare with Dedicated Timers .................................................................................................................................. 161
15.0 Serial Peripheral Interface (SPI)............................................................................................................................................... 171
16.0 Inter-Integrated Circuit (I2C™) ................................................................................................................................................. 181
17.0 Universal Asynchronous Receiver Transmitter (UART) ........................................................................................................... 189
18.0 Universal Serial Bus with On-The-Go Support (USB OTG) ..................................................................................................... 197
19.0 Parallel Master Port (PMP)....................................................................................................................................................... 231
20.0 Real-Time Clock and Calendar (RTCC) .................................................................................................................................. 241
21.0 32-Bit Programmable Cyclic Redundancy Check (CRC) Generator ........................................................................................ 253
22.0 10-Bit High-Speed A/D Converter ............................................................................................................................................ 259
23.0 Triple Comparator Module........................................................................................................................................................ 269
24.0 Comparator Voltage Reference................................................................................................................................................ 273
25.0 Charge Time Measurement Unit (CTMU) ................................................................................................................................ 275
26.0 Special Features ...................................................................................................................................................................... 279
27.0 Development Support............................................................................................................................................................... 293
28.0 Instruction Set Summary .......................................................................................................................................................... 297
29.0 Electrical Characteristics .......................................................................................................................................................... 305
30.0 Packaging Information.............................................................................................................................................................. 327
Appendix A: Revision History............................................................................................................................................................. 341
The Microchip Web Site ..................................................................................................................................................................... 349
Customer Change Notification Service .............................................................................................................................................. 349
Customer Support .............................................................................................................................................................................. 349
Reader Response .............................................................................................................................................................................. 350
Product Identification System ............................................................................................................................................................ 351
2010 Microchip Technology Inc.
DS39940D-page 7
PIC24FJ64GB004 FAMILY
TO OUR VALUED CUSTOMERS
It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip
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The last character of the literature number is the version number, (e.g., DS30000A is version A of document DS30000).
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An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current
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To determine if an errata sheet exists for a particular device, please check with one of the following:
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DS39940D-page 8
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
1.0
DEVICE OVERVIEW
This document contains device-specific information for
the following devices:
• PIC24FJ32GB002
• PIC24FJ32GB004
• PIC24FJ64GB002
• PIC24FJ64GB004
This family expands on the existing line of Microchip‘s
16-bit microcontrollers, combining an expanded
peripheral feature set and enhanced computational
performance with a new connectivity option: USB
On-The-Go (OTG). The PIC24FJ64GB004 family
provides a new platform for high-performance USB
applications which may need more than an 8-bit
platform, but do not require the power of a digital signal
processor.
1.1
1.1.1
Core Features
16-BIT ARCHITECTURE
Central to all PIC24F devices is the 16-bit modified
Harvard architecture, first introduced with Microchip’s
dsPIC® digital signal controllers. The PIC24F CPU core
offers a wide range of enhancements, such as:
• 16-bit data and 24-bit address paths with the
ability to move information between data and
memory spaces
• Linear addressing of up to 12 Mbytes (program
space) and 64 Kbytes (data)
• A 16-element working register array with built-in
software stack support
• A 17 x 17 hardware multiplier with support for
integer math
• Hardware support for 32 by 16-bit division
• An instruction set that supports multiple
addressing modes and is optimized for high-level
languages, such as ‘C’
• Operational performance up to 16 MIPS
1.1.2
POWER-SAVING TECHNOLOGY
All of the devices in the PIC24FJ64GB004 family
incorporate a range of features that can significantly
reduce power consumption during operation. Key
items include:
• On-the-Fly Clock Switching: The device clock
can be changed under software control to the
Timer1 source or the internal, Low-Power Internal
RC Oscillator during operation, allowing the user
to incorporate power-saving ideas into their
software designs.
• Doze Mode Operation: When timing-sensitive
applications, such as serial communications,
require the uninterrupted operation of peripherals,
the CPU clock speed can be selectively reduced,
allowing incremental power savings without
missing a beat.
2010 Microchip Technology Inc.
• Instruction-Based Power-Saving Modes: There
are three instruction-based power-saving modes:
- Idle Mode – The core is shut down while leaving
the peripherals active.
- Sleep Mode – The core and peripherals that
require the system clock are shut down, leaving
the peripherals active that use their own clock or
the clock from other devices.
- Deep Sleep Mode – The core, peripherals
(except RTCC and DSWDT), Flash and SRAM
are shut down for optimal current savings to
extend battery life for portable applications.
1.1.3
OSCILLATOR OPTIONS AND
FEATURES
All of the devices in the PIC24FJ64GB004 family offer
five different oscillator options, allowing users a range
of choices in developing application hardware. These
include:
• Two Crystal modes using crystals or ceramic
resonators.
• Two External Clock modes offering the option of a
divide-by-2 clock output.
• A Fast Internal RC Oscillator (FRC) with a
nominal 8 MHz output, which can also be divided
under software control to provide clock speeds as
low as 31 kHz.
• A Phase Lock Loop (PLL) frequency multiplier
available to the external oscillator modes and the
FRC Oscillator, which allows clock speeds of up
to 32 MHz.
• A separate Low-Power Internal RC Oscillator
(LPRC) with a fixed 31 kHz output, which provides a low-power option for timing-insensitive
applications.
The internal oscillator block also provides a stable
reference source for the Fail-Safe Clock Monitor. This
option constantly monitors the main clock source
against a reference signal provided by the internal
oscillator and enables the controller to switch to the
internal oscillator, allowing for continued low-speed
operation or a safe application shutdown.
1.1.4
EASY MIGRATION
Regardless of the memory size, all devices share the
same rich set of peripherals, allowing for a smooth
migration path as applications grow and evolve. The
consistent pinout scheme used throughout the entire
family also aids in migrating from one device to the next
larger device.
The PIC24F family is pin-compatible with devices in the
dsPIC33 family, and shares some compatibility with the
pinout schema for PIC18 and dsPIC30 devices. This
extends the ability of applications to grow from the
relatively simple, to the powerful and complex, yet still
selecting a Microchip device.
DS39940D-page 9
PIC24FJ64GB004 FAMILY
1.2
USB On-The-Go
The PIC24FJ64GB004 family of devices introduces
USB On-The-Go functionality on a single chip to lower
pin count Microchip devices. This module provides
on-chip functionality as a target device compatible with
the USB 2.0 standard, as well as limited stand-alone
functionality as a USB embedded host. By implementing USB Host Negotiation Protocol (HNP), the module
can also dynamically switch between device and host
operation, allowing for a much wider range of versatile
USB-enabled applications on a microcontroller
platform.
• Parallel Master/Enhanced Parallel Slave Port:
One of the general purpose I/O ports can be
reconfigured for enhanced parallel data communications. In this mode, the port can be configured
for both master and slave operations, and
supports 8-bit and 16-bit data transfers with up to
12 external address lines in Master modes.
• Real-Time Clock/Calendar: This module
implements a full-featured clock and calendar with
alarm functions in hardware, freeing up timer
resources and program memory space for the use
of the core application.
In addition to USB host functionality, PIC24FJ64GB004
family devices provide a true single chip USB solution,
including an on-chip transceiver and a voltage boost
generator for sourcing bus power during host
operations.
1.4
1.3
The devices are differentiated from each other in
several ways:
Other Special Features
• Peripheral Pin Select: The Peripheral Pin Select
feature allows most digital peripherals to be
mapped over a fixed set of digital I/O pins. Users
may independently map the input and/or output of
any one of the many digital peripherals to any one
of the I/O pins.
• Communications: The PIC24FJ64GB004 family
incorporates a range of serial communication
peripherals to handle a range of application
requirements. There are two independent I2C™
modules that support both Master and Slave
modes of operation. Devices also have, through
the Peripheral Pin Select (PPS) feature, two
independent UARTs with built-in IrDA®
encoder/decoders and two SPI modules.
• Analog Features: All members of the
PIC24FJ64GB004 family include a 10-bit A/D
Converter module and a triple comparator
module. The A/D module incorporates programmable acquisition time, allowing for a channel to
be selected and a conversion to be initiated
without waiting for a sampling period, as well as
faster sampling speeds. The comparator module
includes three analog comparators that are
configurable for a wide range of operations.
• CTMU Interface: This module provides a
convenient method for precision time measurement and pulse generation, and can serve as an
interface for capacitive sensors.
DS39940D-page 10
Details on Individual Family
Members
Devices in the PIC24FJ64GB004 family are available
in 28-pin and 44-pin packages. The general block
diagram for all devices is shown in Figure 1-1.
• Flash Program Memory:
- PIC24FJ32GB0 devices – 32 Kbytes
- PIC24FJ64GB0 devices – 64 Kbytes
• Available I/O Pins and Ports:
- 28-pin devices – 19 pins on two ports
- 44-pin devices – 33 pins on three ports
• Available Interrupt-on-Change Notification (ICN)
Inputs:
- 28-pin devices – 19
- 44-pin devices – 29
• Available Remappable Pins:
- 28-pin devices – 15 pins
- 44-pin devices – 25 pins
• Available PMP Address Pins:
- 28-pin devices – 3 pins
- 44-pin devices – 12 pins
• Available A/D Input Channels:
- 28-pin devices – 9 pins
- 44-pin devices – 12 pins
All other features for devices in this family are identical.
These are summarized in Table 1-1.
A list of the pin features available on the
PIC24FJ64GB004 family devices, sorted by function, is
shown in Table 1-2. Note that this table shows the pin
location of individual peripheral features and not how
they are multiplexed on the same pin. This information
is provided in the pinout diagrams in the beginning of
this data sheet. Multiplexed features are sorted by the
priority given to a feature, with the highest priority
peripheral being listed first.
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
TABLE 1-1:
DEVICE FEATURES FOR THE PIC24FJ64GB004 FAMILY
Features
PIC24FJ32GB002
PIC24FJ64GB002 PIC24FJ32GB004 PIC24FJ64GB004
Operating Frequency
Program Memory (bytes)
Program Memory (instructions)
DC – 32 MHz
32K
64K
11,008
22,016
Data Memory (bytes)
64K
11,008
22,016
8,192
Interrupt Sources (soft vectors/
NMI traps)
I/O Ports
32K
45 (41/4)
Ports A and B
Ports A, B, C
Total I/O Pins
19
33
Remappable Pins
15
25
Timers:
5(1)
Total Number (16-bit)
32-Bit (from paired 16-bit timers)
2
Input Capture Channels
5(1)
Output Compare/PWM Channels
5(1)
Input Change Notification Interrupt
19
29
Serial Communications:
UART
2(1)
SPI (3-wire/4-wire)
2(1)
I2C™
2
Parallel Communications (PMP/PSP)
Yes
JTAG Boundary Scan
10-Bit Analog-to-Digital Module
(input channels)
Yes
9
Analog Comparators
3
CTMU Interface
Resets (and delays)
Instruction Set
Packages
Note 1:
13
Yes
POR, BOR, RESET Instruction, MCLR, WDT, Illegal Opcode,
REPEAT Instruction, Hardware Traps, Configuration Word Mismatch
(PWRT, OST, PLL Lock)
76 Base Instructions, Multiple Addressing Mode Variations
28-Pin QFN, SOIC, SSOP and SPDIP
44-Pin QFN and TQFP
Peripherals are accessible through remappable pins.
2010 Microchip Technology Inc.
DS39940D-page 11
PIC24FJ64GB004 FAMILY
FIGURE 1-1:
PIC24FJ64GB004 FAMILY GENERAL BLOCK DIAGRAM
Data Bus
Interrupt
Controller
PORTA(1)
16
(9 I/O)
16
16
8
Data Latch
PSV & Table
Data Access
Control Block
Data RAM
PCH
PCL
Program Counter
Repeat
Stack
Control
Control
Logic
Logic
23
Address
Latch
PORTB
(14 I/O)
16
23
16
Read AGU
Write AGU
Address Latch
PORTC(1)
Program Memory
(10 I/O)
Data Latch
16
EA MUX
Literal Data
Address Bus
24
Inst Latch
16
16
RP(1)
Inst Register
RP0:RP25
Instruction
Decode &
Control
Divide
Support
Control Signals
OSCO/CLKO
OSCI/CLKI
Timing
Generation
FRC/LPRC
Oscillators
REFO
DISVREG
Power-up
Timer
Oscillator
Start-up Timer
Watchdog
Timer
Voltage
Regulator
BOR and
LVD(2)
Timer1
Timer2/3(3)
16-Bit ALU
Power-on
Reset
Precision
Band Gap
Reference
VDDCORE/VCAP
16 x 16
W Reg Array
17 x 17
Multiplier
VDD, VSS
Timer4/5(3)
16
MCLR
RTCC
10-Bit
ADC
Comparators(3)
USB OTG
PMP/PSP
IC
1-5(3)
Note
1:
2:
3:
PWM/OC
1-5(3)
ICNs(1)
SPI
1/2(3)
I2C
1/2
UART
1/2(3)
CTMU
Not all I/O pins or features are implemented on all device pinout configurations. See Table 1-2 for specific implementations by pin count.
BOR functionality is provided when the on-board voltage regulator is enabled.
These peripheral I/Os are only accessible through remappable pins.
DS39940D-page 12
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
TABLE 1-2:
PIC24FJ64GB004 FAMILY PINOUT DESCRIPTIONS
Pin Number
Function
28-Pin
SPDIP/
SOIC/SSOP
28-Pin
QFN
44-Pin
QFN/TQFP
I/O
Input
Buffer
Description
AN0
2
27
19
I
ANA
AN1
3
28
20
I
ANA
A/D Analog Inputs.
AN2
4
1
21
I
ANA
AN3
5
2
22
I
ANA
AN4
6
3
23
I
ANA
AN5
7
4
24
I
ANA
AN6
—
—
25
I
ANA
AN7
—
—
26
I
ANA
AN8
—
—
27
I
ANA
AN9
26
23
15
I
ANA
AN10
25
22
14
I
ANA
AN11
24
21
11
I
ANA
AN12
—
—
36
I
ANA
ASCL1
3
28
20
I/O
I2C
Alternate I2C1 Synchronous Serial Clock Input/Output.
ASDA1
2
27
19
I/O
I2C
Alternate I2C1 Synchronous Serial Data Input/Output.
AVDD
—
—
17
P
—
Positive Supply for Analog modules.
AVSS
—
—
16
P
—
Ground Reference for Analog modules.
C1INA
7
4
24
I
ANA
Comparator 1 Input A.
C1INB
6
3
23
I
ANA
Comparator 1 Input B.
C1INC
24
21
11
I
ANA
Comparator 1 Input C.
C1IND
9
6
30
I
ANA
Comparator 1 Input D.
C2INA
5
2
22
I
ANA
Comparator 2 Input A.
C2INB
4
1
21
I
ANA
Comparator 2 Input B.
C2INC
12
9
34
I
ANA
Comparator 2 Input C.
C2IND
11
8
33
I
ANA
Comparator 2 Input D.
C3INA
26
23
15
I
ANA
Comparator 3 Input A.
C3INB
25
22
14
I
ANA
Comparator 3 Input B.
C3INC
2
27
19
I
ANA
Comparator 3 Input C.
C3IND
3
28
20
I
ANA
Comparator 3 Input D.
CLKI
9
6
30
I
ANA
CLKO
10
7
31
O
—
Legend:
TTL = TTL input buffer
ANA = Analog level input/output
2010 Microchip Technology Inc.
Main Clock Input Connection.
System Clock Output.
ST = Schmitt Trigger input buffer
I2C™ = I2C/SMBus input buffer
DS39940D-page 13
PIC24FJ64GB004 FAMILY
TABLE 1-2:
PIC24FJ64GB004 FAMILY PINOUT DESCRIPTIONS (CONTINUED)
Pin Number
28-Pin
SPDIP/
SOIC/SSOP
28-Pin
QFN
44-Pin
QFN/TQFP
I/O
Input
Buffer
CN0
12
9
34
I
ST
CN1
11
8
33
I
ST
CN2
2
27
19
I
ST
CN3
3
28
20
I
ST
CN4
4
1
21
I
ST
CN5
5
2
22
I
ST
CN6
6
3
23
I
ST
Function
CN7
7
4
24
I
ST
CN8
—
—
25
I
ST
CN9
—
—
26
I
ST
CN10
—
—
27
I
ST
CN11
26
23
15
I
ST
CN12
25
22
14
I
ST
CN13
24
21
11
I
ST
CN15
22
19
9
I
ST
CN16
21
18
8
I
ST
CN17
—
—
3
I
ST
CN18
—
—
2
I
ST
CN19
—
—
5
I
ST
Description
Interrupt-on-Change Inputs.
CN20
—
—
4
I
ST
CN21
18
15
1
I
ST
CN22
17
14
44
I
ST
CN23
16
13
43
I
ST
CN25
—
—
37
I
ST
CN26
—
—
38
I
ST
CN27
14
11
41
I
ST
CN28
—
—
36
I
ST
CN29
10
7
31
I
ST
CN30
9
6
30
I
ST
CTED1
2
27
19
I
ANA
CTMU External Edge Input 1.
CTED2
3
28
20
I
ANA
CTMU External Edge Input 2.
CVREF
25
22
14
O
—
Comparator Voltage Reference Output.
D+
21
18
8
I/O
—
USB Differential Plus Line (internal transceiver).
D-
22
19
9
I/O
—
USB Differential Minus Line (internal transceiver).
DMH
5
2
22
O
—
D- External Pull-up Control Output.
DMLN
7
4
24
O
—
D- External Pull-down Control Output.
DPH
4
1
21
O
—
D+ External Pull-up Control Output.
DPLN
6
3
23
O
—
D+ External Pull-down Control Output.
DISVREG
19
16
6
I
ST
Voltage Regulator Disable.
Legend:
TTL = TTL input buffer
ANA = Analog level input/output
DS39940D-page 14
ST = Schmitt Trigger input buffer
I2C™ = I2C/SMBus input buffer
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
TABLE 1-2:
PIC24FJ64GB004 FAMILY PINOUT DESCRIPTIONS (CONTINUED)
Pin Number
28-Pin
SPDIP/
SOIC/SSOP
28-Pin
QFN
44-Pin
QFN/TQFP
I/O
Input
Buffer
INT0
16
13
43
I
ST
External Interrupt Input.
MCLR
1
26
18
I
ST
Master Clear (device Reset) Input. This line is brought low to
cause a Reset.
Function
Description
OSCI
9
6
30
I
ANA
Main Oscillator Input Connection.
OSCO
10
7
31
O
ANA
Main Oscillator Output Connection.
PGEC1
5
2
22
I/O
ST
PGED1
4
1
21
I/O
ST
In-Circuit Debugger/Emulator/ICSP Programming Data.
PGEC2
22
19
9
I/O
ST
In-Circuit Debugger/Emulator/ICSP Programming Clock.
PGED2
21
18
8
I/O
ST
In-Circuit Debugger/Emulator/ICSP Programming Data.
PGEC3
3
28
20
I/O
ST
In-Circuit Debugger/Emulator/ICSP Programming Clock.
PGED3
2
27
19
I/O
ST
In-Circuit Debugger/Emulator/ICSP Programming Data.
PMA0
10
7
3
I/O
ST
Parallel Master Port Address Bit 0 Input (Buffered Slave
modes) and Output (Master modes).
PMA1
12
9
2
I/O
ST
Parallel Master Port Address Bit 1 Input (Buffered Slave
modes) and Output (Master modes).
PMA2
—
—
27
O
—
Parallel Master Port Address (Demultiplexed Master modes).
PMA3
—
—
38
O
—
PMA4
—
—
37
O
—
PMA5
—
—
4
O
—
PMA6
—
—
5
O
—
PMA7
—
—
13
O
—
PMA8
—
—
32
O
—
PMA9
—
—
35
O
—
PMA10
—
—
12
O
PMCS1
9
6
30
I/O
PMBE
11
8
36
O
PMD0
4
1
21
I/O
PMD1
5
2
22
I/O
ST/TTL Parallel Master Port Data (Demultiplexed Master mode) or
ST/TTL Address/Data (Multiplexed Master modes).
PMD2
6
3
23
I/O
ST/TTL
PMD3
18
15
1
I/O
ST/TTL
PMD4
17
14
44
I/O
ST/TTL
PMD5
16
13
43
I/O
ST/TTL
PMD6
3
28
20
I/O
ST/TTL
PMD7
2
27
19
I/O
ST/TTL
PMRD
24
21
11
O
—
Parallel Master Port Read Strobe.
7
4
24
O
—
Parallel Master Port Write Strobe.
PMWR
Legend:
TTL = TTL input buffer
ANA = Analog level input/output
2010 Microchip Technology Inc.
In-Circuit Debugger/Emulator/ICSP™ Programming Clock.
—
ST/TTL Parallel Master Port Chip Select 1 Strobe/Address Bit 15.
—
Parallel Master Port Byte Enable Strobe.
ST = Schmitt Trigger input buffer
I2C™ = I2C/SMBus input buffer
DS39940D-page 15
PIC24FJ64GB004 FAMILY
TABLE 1-2:
PIC24FJ64GB004 FAMILY PINOUT DESCRIPTIONS (CONTINUED)
Pin Number
Function
28-Pin
SPDIP/
SOIC/SSOP
28-Pin
QFN
44-Pin
QFN/TQFP
I/O
Input
Buffer
RA0
2
27
19
I/O
ST
RA1
3
28
20
I/O
ST
RA2
9
6
30
I/O
ST
RA3
10
7
31
I/O
ST
RA4
12
9
34
I/O
ST
RA7
—
—
13
I/O
ST
RA8
—
—
32
I/O
ST
Description
PORTA Digital I/O.
RA9
—
—
35
I/O
ST
RA10
—
—
12
I/O
ST
RB0
4
1
21
I/O
ST
RB1
5
2
22
I/O
ST
RB2
6
3
23
I/O
ST
RB3
7
4
24
I/O
ST
RB4
11
8
33
I/O
ST
RB5
14
11
41
I/O
ST
RB7
16
13
43
I/O
ST
RB8
17
14
44
I/O
ST
RB9
18
15
1
I/O
ST
RB10
21
18
8
I/O
ST
RB11
22
19
9
I/O
ST
RB13
24
21
11
I/O
ST
RB14
25
22
14
I/O
ST
RB15
26
23
15
I/O
ST
RC0
—
—
25
I/O
ST
RC1
—
—
26
I/O
ST
RC2
—
—
27
I/O
ST
RC3
—
—
36
I/O
ST
RC4
—
—
37
I/O
ST
RC5
—
—
38
I/O
ST
RC6
—
—
2
I/O
ST
RC7
—
—
3
I/O
ST
RC8
—
—
4
I/O
ST
RC9
—
—
5
I/O
ST
RCV
18
15
1
I
ST
USB Receive Input (from external transceiver).
REFO
24
21
11
O
—
Reference Clock Output.
Legend:
TTL = TTL input buffer
ANA = Analog level input/output
DS39940D-page 16
PORTB Digital I/O.
PORTC Digital I/O.
ST = Schmitt Trigger input buffer
I2C™ = I2C/SMBus input buffer
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
TABLE 1-2:
PIC24FJ64GB004 FAMILY PINOUT DESCRIPTIONS (CONTINUED)
Pin Number
28-Pin
SPDIP/
SOIC/SSOP
28-Pin
QFN
44-Pin
QFN/TQFP
I/O
Input
Buffer
RP0
4
1
21
I/O
ST
RP1
5
2
22
I/O
ST
RP2
6
3
23
I/O
ST
Function
Description
Remappable Peripheral (input or output).
RP3
7
4
24
I/O
ST
RP4
11
8
33
I/O
ST
RP5
2
27
19
I/O
ST
RP6
3
28
20
I/O
ST
RP7
16
13
43
I/O
ST
RP8
17
14
44
I/O
ST
RP9
18
15
1
I/O
ST
RP10
21
18
8
I/O
ST
RP11
22
19
9
I/O
ST
RP13
24
21
11
I/O
ST
RP14
25
22
14
I/O
ST
RP15
26
23
15
I/O
ST
RP16
—
—
25
I/O
ST
RP17
—
—
26
I/O
ST
RP18
—
—
27
I/O
ST
RP19
—
—
36
I/O
ST
RP20
—
—
37
I/O
ST
RP21
—
—
38
I/O
ST
RP22
—
—
2
I/O
ST
RP23
—
—
3
I/O
ST
RP24
—
—
4
I/O
ST
RP25
—
—
5
I/O
ST
RTCC
7
4
24
O
—
Real-Time Clock Alarm/Seconds Pulse Output.
SESSEND
24
21
11
I
ST
USB VBUS Session End Status Input.
SESSVLD
3
28
20
I
ST
USB VBUS Session Valid Status Input.
SCL1
17
14
44
I/O
I2C
I2C1 Synchronous Serial Clock Input/Output.
SCL2
7
4
24
I/O
I2C
I2C2 Synchronous Serial Clock Input/Output.
SDA1
18
15
1
I/O
I2C
I2C1 Data Input/Output.
2
SDA2
6
3
23
I/O
I C
SOSCI
11
8
33
I
ANA
Secondary Oscillator/Timer1 Clock Input.
Secondary Oscillator/Timer1 Clock Output.
I2C2 Data Input/Output.
SOSCO
12
9
34
O
ANA
T1CK
12
9
34
I
ST
TCK
17
14
13
I
ST
JTAG Test Clock Input.
TDI
16
13
35
I
ST
JTAG Test Data Input.
TDO
18
15
32
O
—
JTAG Test Data Output.
TMS
14
11
12
I
ST
JTAG Test Mode Select Input.
USBID
14
11
41
I
ST
USB OTG ID (OTG mode only).
USBOEN
17
14
44
O
—
USB Output Enable Control (for external transceiver).
Legend:
TTL = TTL input buffer
ANA = Analog level input/output
2010 Microchip Technology Inc.
Timer1 Clock Input.
ST = Schmitt Trigger input buffer
I2C™ = I2C/SMBus input buffer
DS39940D-page 17
PIC24FJ64GB004 FAMILY
TABLE 1-2:
PIC24FJ64GB004 FAMILY PINOUT DESCRIPTIONS (CONTINUED)
Pin Number
Function
28-Pin
SPDIP/
SOIC/SSOP
28-Pin
QFN
44-Pin
QFN/TQFP
I/O
Input
Buffer
Description
VBUS
15
12
42
P
—
USB Voltage, Host mode (5V).
VBUSCHG
26
23
15
O
—
USB External VBUS Control Output
VBUSON
25
22
14
O
—
USB OTG External Charge Pump Control.
VBUSST
26
23
15
I
ANA
VBUSVLD
2
27
19
I
ST
VCAP
20
17
7
P
—
External Filter Capacitor Connection (regulator enabled).
VCPCON
25
22
14
O
—
USB OTG VBUS PWM/Charge Output.
VDD
USB OTG Internal Charge Pump Feedback Control.
USB VBUS Valid Status Input.
13, 28
10, 25
28, 40
P
—
Positive Supply for Peripheral Digital Logic and I/O Pins.
VDDCORE
20
17
7
P
—
Positive Supply for Microcontroller Core Logic (regulator
disabled).
VMIO
22
19
9
I/O
ST
USB Differential Minus Input/Output (external transceiver).
VPIO
21
18
8
I/O
ST
VREF-
3
28
20
I
ANA
A/D and Comparator Reference Voltage (low) Input.
VREF+
2
27
19
I
ANA
A/D and Comparator Reference Voltage (high) Input.
VSS
8, 27
5, 24
29, 39
P
—
Ground Reference for Logic and I/O Pins.
VUSB
23
20
10
P
—
USB Voltage (3.3V).
Legend:
TTL = TTL input buffer
ANA = Analog level input/output
DS39940D-page 18
USB Differential Plus Input/Output (external transceiver).
ST = Schmitt Trigger input buffer
I2C™ = I2C/SMBus input buffer
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
• All VDD and VSS pins
(see Section 2.2 “Power Supply Pins”)
• All AVDD and AVSS pins, regardless of whether or
not the analog device features are used
(see Section 2.2 “Power Supply Pins”)
• MCLR pin
(see Section 2.3 “Master Clear (MCLR) Pin”)
• ENVREG/DISVREG and VCAP/VDDCORE pins
(PIC24FJ devices only)
(see Section 2.4 “Voltage Regulator Pins
(ENVREG/DISVREG and VCAP/VDDCORE)”)
These pins must also be connected if they are being
used in the end application:
• PGECx/PGEDx pins used for In-Circuit Serial
Programming™ (ICSP™) and debugging purposes
(see Section 2.5 “ICSP Pins”)
• OSCI and OSCO pins when an external oscillator
source is used
(see Section 2.6 “External Oscillator Pins”)
Additionally, the following pins may be required:
• VREF+/VREF- pins used when external voltage
reference for analog modules is implemented
Note:
VSS
VDD
R1
R2
(1) (1)
(EN/DIS)VREG
MCLR
VCAP/VDDCORE
C1
C7
PIC24FXXXX
C6(2)
VSS
VDD
VDD
VSS
C3(2)
C5(2)
VSS
The following pins must always be connected:
C2(2)
VDD
Getting started with the PIC24FJ64GB004 family of
16-bit microcontrollers requires attention to a minimal
set of device pin connections before proceeding with
development.
RECOMMENDED
MINIMUM CONNECTIONS
VDD
Basic Connection Requirements
FIGURE 2-1:
AVSS
2.1
GUIDELINES FOR GETTING
STARTED WITH 16-BIT
MICROCONTROLLERS
AVDD
2.0
C4(2)
Key (all values are recommendations):
C1 through C6: 0.1 F, 20V ceramic
C7: 10 F, 6.3V or greater, tantalum or ceramic
R1: 10 kΩ
R2: 100Ω to 470Ω
Note 1:
2:
See Section 2.4 “Voltage Regulator Pins
(ENVREG/DISVREG and VCAP/VDDCORE)”
for explanation of ENVREG/DISVREG pin
connections.
The example shown is for a PIC24F device
with five VDD/VSS and AVDD/AVSS pairs.
Other devices may have more or less pairs;
adjust the number of decoupling capacitors
appropriately.
The AVDD and AVSS pins must always be
connected, regardless of whether any of
the analog modules are being used.
The minimum mandatory connections are shown in
Figure 2-1.
2010 Microchip Technology Inc.
DS39940D-page 19
PIC24FJ64GB004 FAMILY
2.2
2.2.1
Power Supply Pins
DECOUPLING CAPACITORS
The use of decoupling capacitors on every pair of
power supply pins, such as VDD, VSS, AVDD and
AVSS is required.
Consider the following criteria when using decoupling
capacitors:
• Value and type of capacitor: A 0.1 F (100 nF),
10-20V capacitor is recommended. The capacitor
should be a low-ESR device with a resonance
frequency in the range of 200 MHz and higher.
Ceramic capacitors are recommended.
• Placement on the printed circuit board: The
decoupling capacitors should be placed as close
to the pins as possible. It is recommended to
place the capacitors on the same side of the
board as the device. If space is constricted, the
capacitor can be placed on another layer on the
PCB using a via; however, ensure that the trace
length from the pin to the capacitor is no greater
than 0.25 inch (6 mm).
• Handling high-frequency noise: If the board is
experiencing high-frequency noise (upward of
tens of MHz), add a second ceramic type capacitor in parallel to the above described decoupling
capacitor. The value of the second capacitor can
be in the range of 0.01 F to 0.001 F. Place this
second capacitor next to each primary decoupling
capacitor. In high-speed circuit designs, consider
implementing a decade pair of capacitances as
close to the power and ground pins as possible
(e.g., 0.1 F in parallel with 0.001 F).
• Maximizing performance: On the board layout
from the power supply circuit, run the power and
return traces to the decoupling capacitors first,
and then to the device pins. This ensures that the
decoupling capacitors are first in the power chain.
Equally important is to keep the trace length
between the capacitor and the power pins to a
minimum, thereby reducing PCB trace
inductance.
2.2.2
TANK CAPACITORS
On boards with power traces running longer than six
inches in length, it is suggested to use a tank capacitor
for integrated circuits including microcontrollers to
supply a local power source. The value of the tank
capacitor should be determined based on the trace
resistance that connects the power supply source to
the device, and the maximum current drawn by the
device in the application. In other words, select the tank
capacitor so that it meets the acceptable voltage sag at
the device. Typical values range from 4.7 F to 47 F.
DS39940D-page 20
2.3
Master Clear (MCLR) Pin
The MCLR pin provides two specific device
functions: device Reset, and device programming
and debugging. If programming and debugging are
not required in the end application, a direct
connection to VDD may be all that is required. The
addition of other components, to help increase the
application’s resistance to spurious Resets from
voltage sags, may be beneficial. A typical
configuration is shown in Figure 2-1. Other circuit
designs may be implemented, depending on the
application’s requirements.
During programming and debugging, the resistance
and capacitance that can be added to the pin must
be considered. Device programmers and debuggers
drive the MCLR pin. Consequently, specific voltage
levels (VIH and VIL) and fast signal transitions must
not be adversely affected. Therefore, specific values
of R1 and C1 will need to be adjusted based on the
application and PCB requirements. For example, it is
recommended that the capacitor, C1, be isolated
from the MCLR pin during programming and
debugging operations by using a jumper (Figure 2-2).
The jumper is replaced for normal run-time
operations.
Any components associated with the MCLR pin
should be placed within 0.25 inch (6 mm) of the pin.
FIGURE 2-2:
EXAMPLE OF MCLR PIN
CONNECTIONS
VDD
R1
R2
JP
MCLR
PIC24FXXXX
C1
Note 1:
R1 10 k is recommended. A suggested
starting value is 10 k. Ensure that the
MCLR pin VIH and VIL specifications are met.
2:
R2 470 will limit any current flowing into
MCLR from the external capacitor, C, in the
event of MCLR pin breakdown, due to
Electrostatic Discharge (ESD) or Electrical
Overstress (EOS). Ensure that the MCLR pin
VIH and VIL specifications are met.
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
Note:
Voltage Regulator Pins
(ENVREG/DISVREG and
VCAP/VDDCORE)
FIGURE 2-3:
The on-chip voltage regulator enable/disable pin
(ENVREG or DISVREG, depending on the device
family) must always be connected directly to either a
supply voltage or to ground. The particular connection
is determined by whether or not the regulator is to be
used:
• For ENVREG, tie to VDD to enable the regulator,
or to ground to disable the regulator
• For DISVREG, tie to ground to enable the
regulator or to VDD to disable the regulator
Refer to Section 26.2 “On-Chip Voltage Regulator”
for details on connecting and using the on-chip
regulator.
When the regulator is enabled, a low-ESR (16;
// Initialize PM Page Boundary SFR
offset = progAddr & 0xFFFF;
// Initialize lower word of address
__builtin_tblwtl(offset, 0x0000);
// Set base address of erase block
// with dummy latch write
NVMCON = 0x4042;
// Initialize NVMCON
asm("DISI #5");
//
//
//
//
__builtin_write_NVM();
EXAMPLE 5-3:
Block all interrupts with priority >16;
// Initialize PM Page Boundary SFR
offset = progAddr & 0xFFFF;
// Initialize lower word of address
//Perform TBLWT instructions to write necessary number of latches
for(i=0; i < 2*NUM_INSTRUCTION_PER_ROW; i++)
{
__builtin_tblwtl(offset, progData[i++]);
// Write to address low word
__builtin_tblwth(offset, progData[i]);
// Write to upper byte
offset = offset + 2;
// Increment address
}
EXAMPLE 5-5:
INITIATING A PROGRAMMING SEQUENCE – ASSEMBLY LANGUAGE CODE
DISI
#5
MOV
MOV
MOV
MOV
BSET
NOP
NOP
BTSC
BRA
#0x55, W0
W0, NVMKEY
#0xAA, W1
W1, NVMKEY
NVMCON, #WR
EXAMPLE 5-6:
; Block all interrupts with priority >16;
// Initialize PM Page Boundary SFR
offset = progAddr & 0xFFFF;
// Initialize lower word of address
//Perform TBLWT instructions to write latches
__builtin_tblwtl(offset, progDataL);
__builtin_tblwth(offset, progDataH);
asm(“DISI #5”);
__builtin_write_NVM();
2010 Microchip Technology Inc.
//
//
//
//
//
//
Write to address low word
Write to upper byte
Block interrupts with priority < 7
for next 5 instructions
C30 function to perform unlock
sequence and set WR
DS39940D-page 61
PIC24FJ64GB004 FAMILY
NOTES:
DS39940D-page 62
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
6.0
Note:
RESETS
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
“PIC24F Family Reference Manual”,
Section 7. “Reset” (DS39712).
The Reset module combines all Reset sources and
controls the device Master Reset Signal, SYSRST. The
following is a list of device Reset sources:
•
•
•
•
•
•
•
•
•
POR: Power-on Reset
MCLR: Pin Reset
SWR: RESET Instruction
WDT: Watchdog Timer Reset
BOR: Brown-out Reset
CM: Configuration Mismatch Reset
TRAPR: Trap Conflict Reset
IOPUWR: Illegal Opcode Reset
UWR: Uninitialized W Register Reset
Any active source of Reset will make the SYSRST
signal active. Many registers associated with the CPU
and peripherals are forced to a known Reset state.
Most registers are unaffected by a Reset; their status is
unknown on POR and unchanged by all other Resets.
Note:
All types of device Reset will set a corresponding status
bit in the RCON register to indicate the type of Reset
(see Register 6-1). A Power-on Reset will clear all bits,
except for the BOR and POR bits (RCON), which
are set. The user may set or clear any bit at any time
during code execution. The RCON bits only serve as
status bits. Setting a particular Reset status bit in
software will not cause a device Reset to occur.
The RCON register also has other bits associated with
the Watchdog Timer and device power-saving states.
The function of these bits is discussed in other sections
of this data sheet.
A simplified block diagram of the Reset module is
shown in Figure 6-1.
FIGURE 6-1:
Refer to the specific peripheral or CPU
section of this manual for register Reset
states.
Note:
The status bits in the RCON register
should be cleared after they are read so
that the next RCON register value after a
device Reset will be meaningful.
RESET SYSTEM BLOCK DIAGRAM
RESET
Instruction
Glitch Filter
MCLR
WDT
Module
Sleep or Idle
VDD Rise
Detect
POR
Brown-out
Reset
BOR
SYSRST
VDD
Enable Voltage Regulator
Trap Conflict
Illegal Opcode
Configuration Mismatch
Uninitialized W Register
2010 Microchip Technology Inc.
Preliminary
DS39940D-page 63
PIC24FJ64GB004 FAMILY
REGISTER 6-1:
RCON: RESET CONTROL REGISTER(1)
R/W-0, HS
TRAPR
bit 15
R/W-0, HS
IOPUWR
U-0
—
U-0
—
U-0
—
R/CO-0, HS
DPSLP
R/W-0, HS
CM
R/W-0
PMSLP
bit 8
R/W-0, HS
EXTR
bit 7
R/W-0, HS
SWR
R/W-0
SWDTEN(2)
R/W-0, HS
WDTO
R/W-0, HS
SLEEP
R/W-0, HS
IDLE
R/W-1, HS
BOR
R/W-1, HS
POR
bit 0
Legend:
R = Readable bit
-n = Value at POR
bit 15
bit 14
bit 13-11
bit 10
bit 9
bit 8
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
Note 1:
2:
CO = Clearable Only bit
W = Writable bit
‘1’ = Bit is set
HS = Hardware Settable bit
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
TRAPR: Trap Reset Flag bit
1 = A Trap Conflict Reset has occurred
0 = A Trap Conflict Reset has not occurred
IOPUWR: Illegal Opcode or Uninitialized W Access Reset Flag bit
1 = An illegal opcode detection, an illegal address mode or uninitialized W register used as an Address
Pointer caused a Reset
0 = An illegal opcode or uninitialized W Reset has not occurred
Unimplemented: Read as ‘0’
DPSLP: Deep Sleep Mode Flag bit
1 = Deep Sleep has occurred
0 = Deep Sleep has not occurred
CM: Configuration Word Mismatch Reset Flag bit
1 = A Configuration Word Mismatch Reset has occurred
0 = A Configuration Word Mismatch Reset has not occurred
PMSLP: Program Memory Power During Sleep bit
1 = Program memory bias voltage remains powered during Sleep
0 = Program memory bias voltage is powered down during Sleep and the voltage regulator enters Standby
mode
EXTR: External Reset (MCLR) Pin bit
1 = A Master Clear (pin) Reset has occurred
0 = A Master Clear (pin) Reset has not occurred
SWR: Software Reset (Instruction) Flag bit
1 = A RESET instruction has been executed
0 = A RESET instruction has not been executed
SWDTEN: Software Enable/Disable of WDT bit(2)
1 = WDT is enabled
0 = WDT is disabled
WDTO: Watchdog Timer Time-out Flag bit
1 = WDT time-out has occurred
0 = WDT time-out has not occurred
SLEEP: Wake From Sleep Flag bit
1 = Device has been in Sleep mode
0 = Device has not been in Sleep mode
IDLE: Wake-up From Idle Flag bit
1 = Device has been in Idle mode
0 = Device has not been in Idle mode
All of the Reset status bits may be set or cleared in software. Setting one of these bits in software does not
cause a device Reset.
If the FWDTEN Configuration bit is ‘1’ (unprogrammed), the WDT is always enabled, regardless of the
SWDTEN bit setting.
DS39940D-page 64
Preliminary
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
RCON: RESET CONTROL REGISTER(1) (CONTINUED)
REGISTER 6-1:
bit 1
BOR: Brown-out Reset Flag bit
1 = A Brown-out Reset has occurred. Note that BOR is also set after a Power-on Reset.
0 = A Brown-out Reset has not occurred
POR: Power-on Reset Flag bit
1 = A Power-on Reset has occurred
0 = A Power-on Reset has not occurred
bit 0
Note 1:
All of the Reset status bits may be set or cleared in software. Setting one of these bits in software does not
cause a device Reset.
If the FWDTEN Configuration bit is ‘1’ (unprogrammed), the WDT is always enabled, regardless of the
SWDTEN bit setting.
2:
TABLE 6-1:
RESET FLAG BIT OPERATION
Flag Bit
Setting Event
Clearing Event
TRAPR (RCON)
Trap Conflict Event
POR
IOPUWR (RCON)
Illegal Opcode or Uninitialized W Register Access
POR
CM (RCON)
Configuration Mismatch Reset
POR
EXTR (RCON)
MCLR Reset
POR
SWR (RCON)
RESET Instruction
WDTO (RCON)
WDT Time-out
SLEEP (RCON)
PWRSAV #SLEEP Instruction
POR
IDLE (RCON)
PWRSAV #IDLE Instruction
POR
POR
PWRSAV Instruction, POR
BOR (RCON)
POR, BOR
—
POR (RCON)
POR
—
DPSLP (RCON)
PWRSAV #SLEEP instruction with DSCON set
Note:
6.1
POR
All Reset flag bits may be set or cleared by the user software.
Clock Source Selection at Reset
If clock switching is enabled, the system clock source at
device Reset is chosen as shown in Table 6-2. If clock
switching is disabled, the system clock source is always
selected according to the oscillator configuration bits.
Refer to Section 8.0 “Oscillator Configuration” for
further details.
TABLE 6-2:
Reset Type
POR
BOR
MCLR
WDTO
OSCILLATOR SELECTION vs.
TYPE OF RESET (CLOCK
SWITCHING ENABLED)
Clock Source Determinant
FNOSC Configuration bits
(CW2)
6.2
Device Reset Times
The Reset times for various types of device Reset are
summarized in Table 6-3. Note that the System Reset
signal, SYSRST, is released after the POR and PWRT
delay times expire.
The time at which the device actually begins to execute
code will also depend on the system oscillator delays,
which include the Oscillator Start-up Timer (OST) and
the PLL lock time. The OST and PLL lock times occur
in parallel with the applicable SYSRST delay times.
The FSCM delay determines the time at which the
FSCM begins to monitor the system clock source after
the SYSRST signal is released.
COSC Control bits
(OSCCON)
SWR
2010 Microchip Technology Inc.
Preliminary
DS39940D-page 65
PIC24FJ64GB004 FAMILY
TABLE 6-3:
RESET DELAY TIMES FOR VARIOUS DEVICE RESETS
Reset Type
POR(6)
EC
BOR
All Others
Note 1:
2:
3:
4:
5:
6:
7:
Note:
Clock Source
SYSRST Delay
System Clock
Delay
TPOR + TRST + TPWRT
—
Notes
1, 2, 3
FRC, FRCDIV
TPOR + TRST + TPWRT
TFRC
1, 2, 3, 4
LPRC
TPOR + TRST + TPWRT
TLPRC
1, 2, 3, 4
1, 2, 3, 5
ECPLL
TPOR + TRST + TPWRT
TLOCK
FRCPLL
TPOR + TRST + TPWRT
TFRC + TLOCK
XT, HS, SOSC
TPOR+ TRST + TPWRT
TOST
XTPLL, HSPLL
TPOR + TRST + TPWRT
TOST + TLOCK
1, 2, 3, 4, 5
1, 2, 3, 6
1, 2, 3, 5, 6
EC
TRST + TPWRT
—
FRC, FRCDIV
TRST + TPWRT
TFRC
2, 3, 4
LPRC
TRST + TPWRT
TLPRC
2, 3, 4
ECPLL
TRST + TPWRT
TLOCK
2, 3, 5
FRCPLL
TRST + TPWRT
TFRC + TLOCK
XT, HS, SOSC
TRST + TPWRT
TOST
XTPLL, HSPLL
TRST + TPWRT
TFRC + TLOCK
TRST
—
Any Clock
2, 3
2, 3, 4, 5
2, 3, 6
2, 3, 4, 5
2
TPOR = Power-on Reset delay.
TRST = Internal State Reset time.
TPWRT = 64 ms nominal if regulator is disabled (DISVREG tied to VDD).
TFRC and TLPRC = RC Oscillator start-up times.
TLOCK = PLL lock time.
TOST = Oscillator Start-up Timer (OST). A 10-bit counter waits 1024 oscillator periods before releasing the
oscillator clock to the system.
If Two-Speed Start-up is enabled, regardless of the primary oscillator selected, the device starts with FRC,
and in such cases, FRC start-up time is valid.
For detailed operating frequency and timing specifications, see Section 29.0 “Electrical Characteristics”.
DS39940D-page 66
Preliminary
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
6.2.1
6.3
POR AND LONG OSCILLATOR
START-UP TIMES
The oscillator start-up circuitry and its associated delay
timers are not linked to the device Reset delays that
occur at power-up. Some crystal circuits (especially
low-frequency crystals) will have a relatively long
start-up time. Therefore, one or more of the following
conditions is possible after SYSRST is released:
• The oscillator circuit has not begun to oscillate.
• The Oscillator Start-up Timer has not expired (if a
crystal oscillator is used).
• The PLL has not achieved a lock (if PLL is used).
The device will not begin to execute code until a valid
clock source has been released to the system. Therefore, the oscillator and PLL start-up delays must be
considered when the Reset delay time must be known.
6.2.2
If the FSCM is enabled, it will begin to monitor the
system clock source when SYSRST is released. If a
valid clock source is not available at this time, the
device will automatically switch to the FRC Oscillator
and the user can switch to the desired crystal oscillator
in the Trap Service Routine (TSR).
2010 Microchip Technology Inc.
Most of the Special Function Registers (SFRs) associated with the PIC24F CPU and peripherals are reset to a
particular value at a device Reset. The SFRs are
grouped by their peripheral or CPU function and their
Reset values are specified in each section of this manual.
The Reset value for each SFR does not depend on the
type of Reset with the exception of four registers. The
Reset value for the Reset Control register, RCON, will
depend on the type of device Reset. The Reset value
for the Oscillator Control register, OSCCON, will
depend on the type of Reset and the programmed
values of the FNOSC bits in Flash Configuration
Word 2 (CW2); see Table 6-2. The RCFGCAL and
NVMCON registers are only affected by a POR.
6.4
FAIL-SAFE CLOCK MONITOR
(FSCM) AND DEVICE RESETS
Special Function Register Reset
States
Deep Sleep BOR (DSBOR)
Deep Sleep BOR is a very low-power BOR circuitry,
used when the device is in Deep Sleep mode. Due to
low-current consumption, accuracy may vary.
The DSBOR trip point is around 2.0V. DSBOR is
enabled by configuring CW4 = 1. DSBOR
will re-arm the POR to ensure the device will reset if VDD
drops below the POR threshold.
Preliminary
DS39940D-page 67
PIC24FJ64GB004 FAMILY
NOTES:
DS39940D-page 68
Preliminary
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
7.0
Note:
INTERRUPT CONTROLLER
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
“PIC24F Family Reference Manual”,
Section 8. “Interrupts” (DS39707).
The PIC24F interrupt controller reduces the numerous
peripheral interrupt request signals to a single interrupt
request signal to the PIC24F CPU. It has the following
features:
•
•
•
•
Up to 8 processor exceptions and software traps
7 user-selectable priority levels
Interrupt Vector Table (IVT) with up to 118 vectors
A unique vector for each interrupt or exception
source
• Fixed priority within a specified user priority level
• Alternate Interrupt Vector Table (AIVT) for debug
support
• Fixed interrupt entry and return latencies
7.1
Interrupt Vector Table
The Interrupt Vector Table (IVT) is shown in Figure 7-1.
The IVT resides in program memory, starting at location
000004h. The IVT contains 126 vectors, consisting of
8 non-maskable trap vectors, plus up to 118 sources of
interrupt. In general, each interrupt source has its own
vector. Each interrupt vector contains a 24-bit wide
address. The value programmed into each interrupt
vector location is the starting address of the associated
Interrupt Service Routine (ISR).
7.1.1
ALTERNATE INTERRUPT VECTOR
TABLE
The Alternate Interrupt Vector Table (AIVT) is located
after the IVT, as shown in Figure 7-1. Access to the
AIVT is provided by the ALTIVT control bit
(INTCON2). If the ALTIVT bit is set, all interrupt
and exception processes will use the alternate vectors
instead of the default vectors. The alternate vectors are
organized in the same manner as the default vectors.
The AIVT supports emulation and debugging efforts by
providing a means to switch between an application
and a support environment without requiring the interrupt vectors to be reprogrammed. This feature also
enables switching between applications for evaluation
of different software algorithms at run time. If the AIVT
is not needed, the AIVT should be programmed with
the same addresses used in the IVT.
7.2
Reset Sequence
A device Reset is not a true exception because the
interrupt controller is not involved in the Reset process.
The PIC24F devices clear their registers in response to
a Reset which forces the PC to zero. The microcontroller then begins program execution at location
000000h. The user programs a GOTO instruction at the
Reset address, which redirects program execution to
the appropriate start-up routine.
Note:
Any unimplemented or unused vector
locations in the IVT and AIVT should be
programmed with the address of a default
interrupt handler routine that contains a
RESET instruction.
Interrupt vectors are prioritized in terms of their natural
priority. This is linked to their position in the vector
table. All other things being equal, lower addresses
have a higher natural priority. For example, the interrupt associated with Vector 0 will take priority over
interrupts at any other vector address.
PIC24FJ64GB004
family
devices
implement
non-maskable traps and unique interrupts. These are
summarized in Table 7-1 and Table 7-2.
2010 Microchip Technology Inc.
DS39940D-page 69
PIC24FJ64GB004 FAMILY
FIGURE 7-1:
PIC24F INTERRUPT VECTOR TABLE
Decreasing Natural Order Priority
Reset – GOTO Instruction
Reset – GOTO Address
Reserved
Oscillator Fail Trap Vector
Address Error Trap Vector
Stack Error Trap Vector
Math Error Trap Vector
Reserved
Reserved
Reserved
Interrupt Vector 0
Interrupt Vector 1
—
—
—
Interrupt Vector 52
Interrupt Vector 53
Interrupt Vector 54
—
—
—
Interrupt Vector 116
Interrupt Vector 117
Reserved
Reserved
Reserved
Oscillator Fail Trap Vector
Address Error Trap Vector
Stack Error Trap Vector
Math Error Trap Vector
Reserved
Reserved
Reserved
Interrupt Vector 0
Interrupt Vector 1
—
—
—
Interrupt Vector 52
Interrupt Vector 53
Interrupt Vector 54
—
—
—
Interrupt Vector 116
Interrupt Vector 117
Start of Code
Note 1:
TABLE 7-1:
000000h
000002h
000004h
000014h
00007Ch
00007Eh
000080h
Interrupt Vector Table (IVT)(1)
0000FCh
0000FEh
000100h
000102h
000114h
Alternate Interrupt Vector Table (AIVT)(1)
00017Ch
00017Eh
000180h
0001FEh
000200h
See Table 7-2 for the interrupt vector list.
TRAP VECTOR DETAILS
Vector Number
IVT Address
AIVT Address
Trap Source
0
000004h
000104h
1
000006h
000106h
Oscillator Failure
2
000008h
000108h
Address Error
Reserved
3
00000Ah
00010Ah
Stack Error
4
00000Ch
00010Ch
Math Error
5
00000Eh
00010Eh
Reserved
6
000010h
000110h
Reserved
7
000012h
000112h
Reserved
DS39940D-page 70
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
TABLE 7-2:
IMPLEMENTED INTERRUPT VECTORS
Interrupt Bit Locations
Vector
Number
IVT Address
AIVT
Address
Flag
Enable
ADC1 Conversion Done
13
00002Eh
00012Eh
IFS0
IEC0
IPC3
Comparator Event
18
000038h
000138h
IFS1
IEC1
IPC4
CRC Generator
67
00009Ah
00019Ah
IFS4
IEC4
IPC16
CTMU Event
77
0000AEh
0001AEh
IFS4
IEC4
IPC19
Interrupt Source
Priority
External Interrupt 0
0
000014h
000114h
IFS0
IEC0
IPC0
External Interrupt 1
20
00003Ch
00013Ch
IFS1
IEC1
IPC5
External Interrupt 2
29
00004Eh
00014Eh
IFS1
IEC1
IPC7
I2C1 Master Event
17
000036h
000136h
IFS1
IEC1
IPC4
I2C1 Slave Event
16
000034h
000134h
IFS1
IEC1
IPC4
I2C2 Master Event
50
000078h
000178h
IFS3
IEC3
IPC12
I2C2 Slave Event
49
000076h
000176h
IFS3
IEC3
IPC12
Input Capture 1
1
000016h
000116h
IFS0
IEC0
IPC0
Input Capture 2
5
00001Eh
00011Eh
IFS0
IEC0
IPC1
Input Capture 3
37
00005Eh
00015Eh
IFS2
IEC2
IPC9
Input Capture 4
38
000060h
000160h
IFS2
IEC2
IPC9
Input Capture 5
39
000062h
000162h
IFS2
IEC2
IPC9
Input Change Notification
19
00003Ah
00013Ah
IFS1
IEC1
IPC4
LVD Low-Voltage Detect
72
0000A4h
0001A4h
IFS4
IEC4
IPC18
Output Compare 1
2
000018h
000118h
IFS0
IEC0
IPC0
Output Compare 2
6
000020h
000120h
IFS0
IEC0
IPC1
Output Compare 3
25
000046h
000146h
IFS1
IEC1
IPC6
Output Compare 4
26
000048h
000148h
IFS1
IEC1
IPC6
Output Compare 5
41
000066h
000166h
IFS2
IEC2
IPC10
Parallel Master Port
45
00006Eh
00016Eh
IFS2
IEC2
IPC11
Real-Time Clock/Calendar
62
000090h
000190h
IFS3
IEC3
IPC15
SPI1 Error
9
000026h
000126h
IFS0
IEC0
IPC2
SPI1 Event
10
000028h
000128h
IFS0
IEC0
IPC2
SPI2 Error
32
000054h
000154h
IFS2
IEC2
IPC8
SPI2 Event
33
000056h
000156h
IFS2
IEC2
IPC8
Timer1
3
00001Ah
00011Ah
IFS0
IEC0
IPC0
Timer2
7
000022h
000122h
IFS0
IEC0
IPC1
Timer3
8
000024h
000124h
IFS0
IEC0
IPC2
Timer4
27
00004Ah
00014Ah
IFS1
IEC1
IPC6
Timer5
28
00004Ch
00014Ch
IFS1
IEC1
IPC7
UART1 Error
65
000096h
000196h
IFS4
IEC4
IPC16
IPC2
UART1 Receiver
11
00002Ah
00012Ah
IFS0
IEC0
UART1 Transmitter
12
00002Ch
00012Ch
IFS0
IEC0
IPC3
UART2 Error
66
000098h
000198h
IFS4
IEC4
IPC16
UART2 Receiver
30
000050h
000150h
IFS1
IEC1
IPC7
UART2 Transmitter
31
000052h
000152h
IFS1
IEC1
IPC7
USB Interrupt
86
0000C0h
0001C0h
IFS5
IEC5
IPC21
2010 Microchip Technology Inc.
DS39940D-page 71
PIC24FJ64GB004 FAMILY
7.3
Interrupt Control and Status
Registers
The PIC24FJ64GB004 family of devices implements
the following registers for the interrupt controller:
•
•
•
•
•
INTCON1
INTCON2
IFS0 through IFS5
IEC0 through IEC5
IPC0 through IPC21 (except IPC13, IPC14 and
IPC17)
• INTTREG
Global interrupt control functions are controlled from
INTCON1 and INTCON2. INTCON1 contains the
Interrupt Nesting Disable (NSTDIS) bit, as well as the
control and status flags for the processor trap sources.
The INTCON2 register controls the external interrupt
request signal behavior and the use of the Alternate
Interrupt Vector Table.
The IFSx registers maintain all of the interrupt request
flags. Each source of interrupt has a status bit which is
set by the respective peripherals, or an external signal,
and is cleared via software.
The IECx registers maintain all of the interrupt enable
bits. These control bits are used to individually enable
interrupts from the peripherals or external signals.
The IPCx registers are used to set the Interrupt Priority
Level for each source of interrupt. Each user interrupt
source can be assigned to one of eight priority levels.
DS39940D-page 72
The interrupt sources are assigned to the IFSx, IECx
and IPCx registers in the order of their vector numbers,
as shown in Table 7-2. For example, the INT0 (External
Interrupt 0) is shown as having a vector number and a
natural order priority of 0. Thus, the INT0IF status bit is
found in IFS0, the INT0IE enable bit in IEC0
and the INT0IP priority bits in the first position of
IPC0 (IPC0).
Although they are not specifically part of the interrupt
control hardware, two of the CPU control registers
contain bits that control interrupt functionality. The ALU
STATUS Register (SR) contains the IPL bits
(SR); these indicate the current CPU interrupt
priority level. The user may change the current CPU
priority level by writing to the IPL bits.
The CORCON register contains the IPL3 bit, which,
together with IPL, indicates the current CPU
priority level. IPL3 is a read-only bit so that trap events
cannot be masked by the user software.
The interrupt controller has the Interrupt Controller Test
Register (INTTREG) that displays the status of the
interrupt controller. When an interrupt request occurs,
its associated vector number and the new interrupt
priority level are latched into INTTREG.
This information can be used to determine a specific
interrupt source if a generic ISR is used for multiple
vectors – such as when ISR remapping is used in bootloader applications. It also could be used to check if
another interrupt is pending while in an ISR.
All interrupt registers are described in Register 7-1
through Register 7-35, on the following pages.
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-1:
SR: ALU STATUS REGISTER (IN CPU)
U-0
U-0
U-0
U-0
U-0
U-0
U-0
R-0
—
—
—
—
—
—
—
DC(1)
bit 15
bit 8
R/W-0
IPL2
(2,3)
R/W-0
R/W-0
R-0
R/W-0
R/W-0
R/W-0
R/W-0
IPL1(2,3)
IPL0(2,3)
RA(1)
N(1)
OV(1)
Z(1)
C(1)
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
IPL: CPU Interrupt Priority Level Status bits(2,3)
111 = CPU interrupt priority level is 7 (15). User interrupts disabled.
110 = CPU interrupt priority level is 6 (14)
101 = CPU interrupt priority level is 5 (13)
100 = CPU interrupt priority level is 4 (12)
011 = CPU interrupt priority level is 3 (11)
010 = CPU interrupt priority level is 2 (10)
001 = CPU interrupt priority level is 1 (9)
000 = CPU interrupt priority level is 0 (8)
bit 7-5
Note 1:
2:
3:
See Register 3-1 for the description of the remaining bit(s) that are not dedicated to interrupt control
functions.
The IPL bits are concatenated with the IPL3 bit (CORCON) to form the CPU interrupt priority level.
The value in parentheses indicates the interrupt priority level if IPL3 = 1.
The IPL Status bits are read-only when NSTDIS (INTCON1) = 1.
REGISTER 7-2:
CORCON: CPU CONTROL REGISTER
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
U-0
R/C-0
R/W-0
U-0
U-0
—
—
—
—
IPL3(2)
PSV(1)
—
—
bit 7
bit 0
Legend:
C = Clearable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
IPL3: CPU Interrupt Priority Level Status bit(2)
1 = CPU interrupt priority level is greater than 7
0 = CPU interrupt priority level is 7 or less
bit 3
Note 1:
2:
See Register 3-2 for the description of the remaining bit(s) that are not dedicated to interrupt control
functions.
The IPL3 bit is concatenated with the IPL bits (SR) to form the CPU interrupt priority level.
2010 Microchip Technology Inc.
DS39940D-page 73
PIC24FJ64GB004 FAMILY
REGISTER 7-3:
INTCON1: INTERRUPT CONTROL REGISTER 1
R/W-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
NSTDIS
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
U-0
—
—
—
MATHERR
ADDRERR
STKERR
OSCFAIL
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
NSTDIS: Interrupt Nesting Disable bit
1 = Interrupt nesting is disabled
0 = Interrupt nesting is enabled
bit 14-5
Unimplemented: Read as ‘0’
bit 4
MATHERR: Arithmetic Error Trap Status bit
1 = Overflow trap has occurred
0 = Overflow trap has not occurred
bit 3
ADDRERR: Address Error Trap Status bit
1 = Address error trap has occurred
0 = Address error trap has not occurred
bit 2
STKERR: Stack Error Trap Status bit
1 = Stack error trap has occurred
0 = Stack error trap has not occurred
bit 1
OSCFAIL: Oscillator Failure Trap Status bit
1 = Oscillator failure trap has occurred
0 = Oscillator failure trap has not occurred
bit 0
Unimplemented: Read as ‘0’
DS39940D-page 74
x = Bit is unknown
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-4:
INTCON2: INTERRUPT CONTROL REGISTER 2
R/W-0
R-0
U-0
U-0
U-0
U-0
U-0
U-0
ALTIVT
DISI
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
—
—
—
—
—
INT2EP
INT1EP
INT0EP
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
ALTIVT: Enable Alternate Interrupt Vector Table (AIVT) bit
1 = Use Alternate Interrupt Vector Table
0 = Use standard (default) Interrupt Vector Table (IVT)
bit 14
DISI: DISI Instruction Status bit
1 = DISI instruction is active
0 = DISI instruction is not active
bit 13-3
Unimplemented: Read as ‘0’
bit 2
INT2EP: External Interrupt 2 Edge Detect Polarity Select bit
1 = Interrupt on negative edge
0 = Interrupt on positive edge
bit 1
INT1EP: External Interrupt 1 Edge Detect Polarity Select bit
1 = Interrupt on negative edge
0 = Interrupt on positive edge
bit 0
INT0EP: External Interrupt 0 Edge Detect Polarity Select bit
1 = Interrupt on negative edge
0 = Interrupt on positive edge
2010 Microchip Technology Inc.
x = Bit is unknown
DS39940D-page 75
PIC24FJ64GB004 FAMILY
REGISTER 7-5:
IFS0: INTERRUPT FLAG STATUS REGISTER 0
U-0
—
bit 15
U-0
—
R/W-0
AD1IF
R/W-0
U1TXIF
R/W-0
U1RXIF
R/W-0
SPI1IF
R/W-0
SPF1IF
R/W-0
T3IF
bit 8
R/W-0
T2IF
bit 7
R/W-0
OC2IF
R/W-0
IC2IF
U-0
—
R/W-0
T1IF
R/W-0
OC1IF
R/W-0
IC1IF
R/W-0
INT0IF
bit 0
Legend:
R = Readable bit
-n = Value at POR
bit 15-14
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
Unimplemented: Read as ‘0’
AD1IF: A/D Conversion Complete Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
U1TXIF: UART1 Transmitter Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
U1RXIF: UART1 Receiver Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
SPI1IF: SPI1 Event Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
SPF1IF: SPI1 Fault Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
T3IF: Timer3 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
T2IF: Timer2 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
OC2IF: Output Compare Channel 2 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
IC2IF: Input Capture Channel 2 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
Unimplemented: Read as ‘0’
T1IF: Timer1 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
OC1IF: Output Compare Channel 1 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
IC1IF: Input Capture Channel 1 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
INT0IF: External Interrupt 0 Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
DS39940D-page 76
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-6:
IFS1: INTERRUPT FLAG STATUS REGISTER 1
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
U-0
U2TXIF
U2RXIF
INT2IF
T5IF
T4IF
OC4IF
OC3IF
—
bit 15
bit 8
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
—
—
INT1IF
CNIF
CMIF
MI2C1IF
SI2C1IF
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
U2TXIF: UART2 Transmitter Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 14
U2RXIF: UART2 Receiver Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 13
INT2IF: External Interrupt 2 Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 12
T5IF: Timer5 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 11
T4IF: Timer4 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 10
OC4IF: Output Compare Channel 4 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 9
OC3IF: Output Compare Channel 3 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 8-5
Unimplemented: Read as ‘0’
bit 4
INT1IF: External Interrupt 1 Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 3
CNIF: Input Change Notification Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 2
CMIF: Comparator Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 1
MI2C1IF: Master I2C1 Event Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 0
SI2C1IF: Slave I2C1 Event Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
2010 Microchip Technology Inc.
x = Bit is unknown
DS39940D-page 77
PIC24FJ64GB004 FAMILY
REGISTER 7-7:
IFS2: INTERRUPT FLAG STATUS REGISTER 2
U-0
U-0
R/W-0
U-0
U-0
U-0
R/W-0
U-0
—
—
PMPIF
—
—
—
OC5IF
—
bit 15
bit 8
R/W-0
R/W-0
R/W-0
U-0
U-0
U-0
R/W-0
R/W-0
IC5IF
IC4IF
IC3IF
—
—
—
SPI2IF
SPF2IF
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-14
Unimplemented: Read as ‘0’
bit 13
PMPIF: Parallel Master Port Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 12-10
Unimplemented: Read as ‘0’
bit 9
OC5IF: Output Compare Channel 5 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 8
Unimplemented: Read as ‘0’
bit 7
IC5IF: Input Capture Channel 5 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 6
IC4IF: Input Capture Channel 4 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 5
IC3IF: Input Capture Channel 3 Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 4-2
Unimplemented: Read as ‘0’
bit 1
SPI2IF: SPI2 Event Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 0
SPF2IF: SPI2 Fault Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
DS39940D-page 78
x = Bit is unknown
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-8:
IFS3: INTERRUPT FLAG STATUS REGISTER 3
U-0
R/W-0
U-0
U-0
U-0
U-0
U-0
U-0
—
RTCIF
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
R/W-0,
R/W-0
U-0
—
—
—
—
—
MI2C2IF
SI2C2IF
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14
RTCIF: Real-Time Clock/Calendar Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 13-3
Unimplemented: Read as ‘0’
bit 2
MI2C2IF: Master I2C2 Event Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 1
SI2C2IF: Slave I2C2 Event Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 0
Unimplemented: Read as ‘0’
2010 Microchip Technology Inc.
x = Bit is unknown
DS39940D-page 79
PIC24FJ64GB004 FAMILY
REGISTER 7-9:
IFS4: INTERRUPT FLAG STATUS REGISTER 4
U-0
U-0
R/W-0
U-0
U-0
U-0
U-0
R/W-0
—
—
CTMUIF
—
—
—
—
LVDIF
bit 15
bit 8
U-0
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
U-0
—
—
—
—
CRCIF
U2ERIF
U1ERIF
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-14
Unimplemented: Read as ‘0’
bit 13
CTMUIF: CTMU Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 12-9
Unimplemented: Read as ‘0’
bit 8
LVDIF: Low-Voltage Detect Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 7-4
Unimplemented: Read as ‘0’
bit 3
CRCIF: CRC Generator Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 2
U2ERIF: UART2 Error Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 1
U1ERIF: UART1 Error Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 0
Unimplemented: Read as ‘0’
DS39940D-page 80
x = Bit is unknown
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-10:
IFS5: INTERRUPT FLAG STATUS REGISTER 5
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
R/W-0
U-0
U-0
U-0
U-0
U-0
U-0
—
USB1IF
—
—
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-7
Unimplemented: Read as ‘0’
bit 6
USB1IF: USB1 (USB OTG) Interrupt Flag Status bit
1 = Interrupt request has occurred
0 = Interrupt request has not occurred
bit 5-0
Unimplemented: Read as ‘0’
2010 Microchip Technology Inc.
x = Bit is unknown
DS39940D-page 81
PIC24FJ64GB004 FAMILY
REGISTER 7-11:
IEC0: INTERRUPT ENABLE CONTROL REGISTER 0
U-0
—
bit 15
U-0
—
R/W-0
AD1IE
R/W-0
U1TXIE
R/W-0
U1RXIE
R/W-0
SPI1IE
R/W-0
SPF1IE
R/W-0
T3IE
bit 8
R/W-0
T2IE
bit 7
R/W-0
OC2IE
R/W-0
IC2IE
U-0
—
R/W-0
T1IE
R/W-0
OC1IE
R/W-0
IC1IE
R/W-0
INT0IE
bit 0
Legend:
R = Readable bit
-n = Value at POR
bit 15-14
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
Unimplemented: Read as ‘0’
AD1IE: A/D Conversion Complete Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
U1TXIE: UART1 Transmitter Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
U1RXIE: UART1 Receiver Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
SPI1IE: SPI1 Transfer Complete Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
SPF1IE: SPI1 Fault Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
T3IE: Timer3 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
T2IE: Timer2 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
OC2IE: Output Compare Channel 2 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
IC2IE: Input Capture Channel 2 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
Unimplemented: Read as ‘0’
T1IE: Timer1 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
OC1IE: Output Compare Channel 1 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
IC1IE: Input Capture Channel 1 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
INT0IE: External Interrupt 0 Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
DS39940D-page 82
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-12:
R/W-0
U2TXIE
bit 15
IEC1: INTERRUPT ENABLE CONTROL REGISTER 1
R/W-0
U2RXIE
R/W-0
INT2IE(1)
R/W-0
T5IE
R/W-0
T4IE
U-0
—
U-0
—
R/W-0
INT1IE(1)
R/W-0
CNIE
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 14
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8-5
bit 4
bit 3
bit 2
bit 1
bit 0
Note 1:
R/W-0
OC3IE
U-0
—
bit 8
U-0
—
bit 15
R/W-0
OC4IE
W = Writable bit
‘1’ = Bit is set
R/W-0
CMIE
R/W-0
MI2C1IE
R/W-0
SI2C1IE
bit 0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
U2TXIE: UART2 Transmitter Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
U2RXIE: UART2 Receiver Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
INT2IE: External Interrupt 2 Enable bit(1)
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
T5IE: Timer5 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
T4IE: Timer4 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
OC4IE: Output Compare Channel 4 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
OC3IE: Output Compare Channel 3 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
Unimplemented: Read as ‘0’
INT1IE: External Interrupt 1 Enable bit(1)
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
CNIE: Input Change Notification Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
CMIE: Comparator Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
MI2C1IE: Master I2C1 Event Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
SI2C1IE: Slave I2C1 Event Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
If an external interrupt is enabled, the interrupt input must also be configured to an available RPn or PRIx
pin. See Section 10.4 “Peripheral Pin Select (PPS)” for more information.
2010 Microchip Technology Inc.
DS39940D-page 83
PIC24FJ64GB004 FAMILY
REGISTER 7-13:
IEC2: INTERRUPT ENABLE CONTROL REGISTER 2
U-0
U-0
R/W-0
U-0
U-0
U-0
R/W-0
U-0
—
—
PMPIE
—
—
—
OC5IE
—
bit 15
bit 8
R/W-0
R/W-0
R/W-0
U-0
U-0
U-0
R/W-0
R/W-0
IC5IE
IC4IE
IC3IE
—
—
—
SPI2IE
SPF2IE
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-14
Unimplemented: Read as ‘0’
bit 13
PMPIE: Parallel Master Port Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 12-10
Unimplemented: Read as ‘0’
bit 9
OC5IE: Output Compare Channel 5 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 8
Unimplemented: Read as ‘0’
bit 7
IC5IE: Input Capture Channel 5 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 6
IC4IE: Input Capture Channel 4 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 5
IC3IE: Input Capture Channel 3 Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 4-2
Unimplemented: Read as ‘0’
bit 1
SPI2IE: SPI2 Event Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 0
SPF2IE: SPI2 Fault Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
DS39940D-page 84
x = Bit is unknown
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-14:
IEC3: INTERRUPT ENABLE CONTROL REGISTER 3
U-0
R/W-0
U-0
U-0
U-0
U-0
U-0
U-0
—
RTCIE
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
R/W-0
R/W-0
U-0
—
—
—
—
—
MI2C2IE
SI2C2IE
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14
RTCIE: Real-Time Clock/Calendar Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 13-3
Unimplemented: Read as ‘0’
bit 2
MI2C2IE: Master I2C2 Event Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 1
SI2C2IE: Slave I2C2 Event Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 0
Unimplemented: Read as ‘0’
2010 Microchip Technology Inc.
x = Bit is unknown
DS39940D-page 85
PIC24FJ64GB004 FAMILY
REGISTER 7-15:
IEC4: INTERRUPT ENABLE CONTROL REGISTER 4
U-0
U-0
R/W-0
U-0
U-0
U-0
U-0
R/W-0
—
—
CTMUIE
—
—
—
—
LVDIE
bit 15
bit 8
U-0
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
U-0
—
—
—
—
CRCIE
U2ERIE
U1ERIE
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-14
Unimplemented: Read as ‘0’
bit 13
CTMUIE: CTMU Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 12-9
Unimplemented: Read as ‘0’
bit 8
LVDIE: Low-Voltage Detect Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 7-4
Unimplemented: Read as ‘0’
bit 3
CRCIE: CRC Generator Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 2
U2ERIE: UART2 Error Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 1
U1ERIE: UART1 Error Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 0
Unimplemented: Read as ‘0’
DS39940D-page 86
x = Bit is unknown
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-16:
IEC5: INTERRUPT ENABLE CONTROL REGISTER 5
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
R/W-0
U-0
U-0
U-0
U-0
U-0
U-0
—
USB1IE
—
—
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-7
Unimplemented: Read as ‘0’
bit 6
USB1IE: USB1 (USB OTG) Interrupt Enable bit
1 = Interrupt request is enabled
0 = Interrupt request is not enabled
bit 5-0
Unimplemented: Read as ‘0’
2010 Microchip Technology Inc.
x = Bit is unknown
DS39940D-page 87
PIC24FJ64GB004 FAMILY
REGISTER 7-17:
IPC0: INTERRUPT PRIORITY CONTROL REGISTER 0
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
T1IP2
T1IP1
T1IP0
—
OC1IP2
OC1IP1
OC1IP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
IC1IP2
IC1IP1
IC1IP0
—
INT0IP2
INT0IP1
INT0IP0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
T1IP: Timer1 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 11
Unimplemented: Read as ‘0’
bit 10-8
OC1IP: Output Compare Channel 1 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
IC1IP: Input Capture Channel 1 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3
Unimplemented: Read as ‘0’
bit 2-0
INT0IP: External Interrupt 0 Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
DS39940D-page 88
x = Bit is unknown
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-18:
IPC1: INTERRUPT PRIORITY CONTROL REGISTER 1
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
T2IP2
T2IP1
T2IP0
—
OC2IP2
OC2IP1
OC2IP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
IC2IP2
IC2IP1
IC2IP0
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
T2IP: Timer2 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 11
Unimplemented: Read as ‘0’
bit 10-8
OC2IP: Output Compare Channel 2 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
IC2IP: Input Capture Channel 2 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3-0
Unimplemented: Read as ‘0’
2010 Microchip Technology Inc.
x = Bit is unknown
DS39940D-page 89
PIC24FJ64GB004 FAMILY
REGISTER 7-19:
IPC2: INTERRUPT PRIORITY CONTROL REGISTER 2
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
U1RXIP2
U1RXIP1
U1RXIP0
—
SPI1IP2
SPI1IP1
SPI1IP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
SPF1IP2
SPF1IP1
SPF1IP0
—
T3IP2
T3IP1
T3IP0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
U1RXIP: UART1 Receiver Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 11
Unimplemented: Read as ‘0’
bit 10-8
SPI1IP: SPI1 Event Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
SPF1IP: SPI1 Fault Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3
Unimplemented: Read as ‘0’
bit 2-0
T3IP: Timer3 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
DS39940D-page 90
x = Bit is unknown
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-20:
IPC3: INTERRUPT PRIORITY CONTROL REGISTER 3
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
AD1IP2
AD1IP1
AD1IP0
—
U1TXIP2
U1TXIP1
U1TXIP0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-7
Unimplemented: Read as ‘0’
bit 6-4
AD1IP: A/D Conversion Complete Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3
Unimplemented: Read as ‘0’
bit 2-0
U1TXIP: UART1 Transmitter Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
2010 Microchip Technology Inc.
x = Bit is unknown
DS39940D-page 91
PIC24FJ64GB004 FAMILY
REGISTER 7-21:
IPC4: INTERRUPT PRIORITY CONTROL REGISTER 4
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
CNIP2
CNIP1
CNIP0
—
CMIP2
CMIP1
CMIP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
MI2C1IP2
MI2C1IP1
MI2C1IP0
—
SI2C1IP2
SI2C1IP1
SI2C1IP0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
CNIP: Input Change Notification Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 11
Unimplemented: Read as ‘0’
bit 10-8
CMIP: Comparator Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
MI2C1IP: Master I2C1 Event Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3
Unimplemented: Read as ‘0’
bit 2-0
SI2C1IP: Slave I2C1 Event Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
DS39940D-page 92
x = Bit is unknown
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-22:
IPC5: INTERRUPT PRIORITY CONTROL REGISTER 5
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
R/W-1
R/W-0
R/W-0
—
—
—
—
—
INT1IP2
INT1IP1
INT1IP0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-3
Unimplemented: Read as ‘0’
bit 2-0
INT1IP: External Interrupt 1 Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
2010 Microchip Technology Inc.
x = Bit is unknown
DS39940D-page 93
PIC24FJ64GB004 FAMILY
REGISTER 7-23:
IPC6: INTERRUPT PRIORITY CONTROL REGISTER 6
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
T4IP2
T4IP1
T4IP0
—
OC4IP2
OC4IP1
OC4IP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
OC3IP2
OC3IP1
OC3IP0
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
T4IP: Timer4 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 11
Unimplemented: Read as ‘0’
bit 10-8
OC4IP: Output Compare Channel 4 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
OC3IP: Output Compare Channel 3 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3-0
Unimplemented: Read as ‘0’
DS39940D-page 94
x = Bit is unknown
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-24:
IPC7: INTERRUPT PRIORITY CONTROL REGISTER 7
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
U2TXIP2
U2TXIP1
U2TXIP0
—
U2RXIP2
U2RXIP1
U2RXIP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
INT2IP2
INT2IP1
INT2IP0
—
T5IP2
T5IP1
T5IP0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
U2TXIP: UART2 Transmitter Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 11
Unimplemented: Read as ‘0’
bit 10-8
U2RXIP: UART2 Receiver Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
INT2IP: External Interrupt 2 Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3
Unimplemented: Read as ‘0’
bit 2-0
T5IP: Timer5 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
2010 Microchip Technology Inc.
x = Bit is unknown
DS39940D-page 95
PIC24FJ64GB004 FAMILY
REGISTER 7-25:
IPC8: INTERRUPT PRIORITY CONTROL REGISTER 8
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
SPI2IP2
SPI2IP1
SPI2IP0
—
SPF2IP2
SPF2IP1
SPF2IP0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-7
Unimplemented: Read as ‘0’
bit 6-4
SPI2IP: SPI2 Event Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3
Unimplemented: Read as ‘0’
bit 2-0
SPF2IP: SPI2 Fault Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
DS39940D-page 96
x = Bit is unknown
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-26:
IPC9: INTERRUPT PRIORITY CONTROL REGISTER 9
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
IC5IP2
IC5IP1
IC5IP0
—
IC4IP2
IC4IP1
IC4IP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
IC3IP2
IC3IP1
IC3IP0
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
IC5IP: Input Capture Channel 5 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 11
Unimplemented: Read as ‘0’
bit 10-8
IC4IP: Input Capture Channel 4 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
IC3IP: Input Capture Channel 3 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3-0
Unimplemented: Read as ‘0’
2010 Microchip Technology Inc.
x = Bit is unknown
DS39940D-page 97
PIC24FJ64GB004 FAMILY
REGISTER 7-27:
IPC10: INTERRUPT PRIORITY CONTROL REGISTER 10
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
OC5IP2
OC5IP1
OC5IP0
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-7
Unimplemented: Read as ‘0’
bit 6-4
OC5IP: Output Compare Channel 5 Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3-0
Unimplemented: Read as ‘0’
DS39940D-page 98
x = Bit is unknown
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-28:
IPC11: INTERRUPT PRIORITY CONTROL REGISTER 11
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
PMPIP2
PMPIP1
PMPIP0
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-7
Unimplemented: Read as ‘0’
bit 6-4
PMPIP: Parallel Master Port Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3-0
Unimplemented: Read as ‘0’
2010 Microchip Technology Inc.
x = Bit is unknown
DS39940D-page 99
PIC24FJ64GB004 FAMILY
REGISTER 7-29:
IPC12: INTERRUPT PRIORITY CONTROL REGISTER 12
U-0
U-0
U-0
U-0
U-0
R/W-1
R/W-0
R/W-0
—
—
—
—
—
MI2C2IP2
MI2C2IP1
MI2C2IP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
SI2C2IP2
SI2C2IP1
SI2C2IP0
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-11
Unimplemented: Read as ‘0’
bit 10-8
MI2C2IP: Master I2C2 Event Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
SI2C2IP: Slave I2C2 Event Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3-0
Unimplemented: Read as ‘0’
DS39940D-page 100
x = Bit is unknown
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-30:
IPC15: INTERRUPT PRIORITY CONTROL REGISTER 15
U-0
U-0
U-0
U-0
U-0
R/W-1
R/W-0
R/W-0
—
—
—
—
—
RTCIP2
RTCIP1
RTCIP0
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-11
Unimplemented: Read as ‘0’
bit 10-8
RTCIP: Real-Time Clock/Calendar Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7-0
Unimplemented: Read as ‘0’
2010 Microchip Technology Inc.
x = Bit is unknown
DS39940D-page 101
PIC24FJ64GB004 FAMILY
REGISTER 7-31:
IPC16: INTERRUPT PRIORITY CONTROL REGISTER 16
U-0
R/W-1
R/W-0
R/W-0
U-0
R/W-1
R/W-0
R/W-0
—
CRCIP2
CRCIP1
CRCIP0
—
U2ERIP2
U2ERIP1
U2ERIP0
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
U1ERIP2
U1ERIP1
U1ERIP0
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
CRCIP: CRC Generator Error Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 11
Unimplemented: Read as ‘0’
bit 10-8
U2ERIP: UART2 Error Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7
Unimplemented: Read as ‘0’
bit 6-4
U1ERIP: UART1 Error Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3-0
Unimplemented: Read as ‘0’
DS39940D-page 102
x = Bit is unknown
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-32:
IPC18: INTERRUPT PRIORITY CONTROL REGISTER 18
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
R/W-1
R/W-0
R/W-0
—
—
—
—
—
LVDIP2
LVDIP1
LVDIP0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-3
Unimplemented: Read as ‘0’
bit 2-0
LVDIP: Low-Voltage Detect Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
REGISTER 7-33:
x = Bit is unknown
IPC19: INTERRUPT PRIORITY CONTROL REGISTER 19
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
R/W-1
R/W-0
R/W-0
U-0
U-0
U-0
U-0
—
CTMUIP2
CTMUIP1
CTMUIP0
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-7
Unimplemented: Read as ‘0’
bit 6-4
CTMUIP: CTMU Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 3-0
Unimplemented: Read as ‘0’
2010 Microchip Technology Inc.
x = Bit is unknown
DS39940D-page 103
PIC24FJ64GB004 FAMILY
REGISTER 7-34:
IPC21: INTERRUPT PRIORITY CONTROL REGISTER 21
U-0
U-0
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
—
—
—
—
—
USB1IP2
USB1IP1
USB1IP0
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-11
Unimplemented: Read as ‘0’
bit 10-8
USB1IP: USB Interrupt Priority bits
111 = Interrupt is Priority 7 (highest priority interrupt)
•
•
•
001 = Interrupt is Priority 1
000 = Interrupt source is disabled
bit 7-0
Unimplemented: Read as ‘0’
DS39940D-page 104
x = Bit is unknown
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 7-35:
INTTREG: INTERRUPT CONTROL AND STATUS REGISTER
R-0
U-0
R/W-0
U-0
R-0
R-0
R-0
R-0
CPUIRQ
—
VHOLD
—
ILR3
ILR2
ILR1
ILR0
bit 15
bit 8
U-0
R-0
R-0
R-0
R-0
R-0
R-0
R-0
—
VECNUM6
VECNUM5
VECNUM4
VECNUM3
VECNUM2
VECNUM1
VECNUM0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
x = Bit is unknown
CPUIRQ: Interrupt Request from Interrupt Controller CPU bit
1 = An interrupt request has occurred but has not yet been Acknowledged by the CPU; this happens
when the CPU priority is higher than the interrupt priority
0 = No interrupt request is unacknowledged
bit 14
Unimplemented: Read as ‘0’
bit 13
VHOLD: Vector Number Capture Configuration bit
1 = The VECNUM bits contain the value of the highest priority pending interrupt
0 = The VECNUM bits contain the value of the last Acknowledged interrupt (i.e., the last interrupt that
has occurred with higher priority than the CPU, even if other interrupts are pending)
bit 12
Unimplemented: Read as ‘0’
bit 11-8
ILR: New CPU Interrupt Priority Level bits
1111 = CPU Interrupt Priority Level is 15
•
•
•
0001 = CPU Interrupt Priority Level is 1
0000 = CPU Interrupt Priority Level is 0
bit 7
Unimplemented: Read as ‘0’
bit 6-0
VECNUM: Pending Interrupt Vector ID bits (pending vector number is VECNUM + 8)
0111111 = Interrupt vector pending is Number 135
•
•
•
0000001 = Interrupt vector pending is Number 9
0000000 = Interrupt vector pending is Number 8
2010 Microchip Technology Inc.
DS39940D-page 105
PIC24FJ64GB004 FAMILY
7.4
Interrupt Setup Procedures
7.4.1
INITIALIZATION
To configure an interrupt source:
1.
2.
Set the NSTDIS control bit (INTCON1) if
nested interrupts are not desired.
Select the user-assigned priority level for the
interrupt source by writing the control bits in the
appropriate IPCx register. The priority level will
depend on the specific application and type of
interrupt source. If multiple priority levels are not
desired, the IPCx register control bits for all
enabled interrupt sources may be programmed
to the same non-zero value.
Note:
3.
4.
At a device Reset, the IPCx registers are
initialized, such that all user interrupt
sources are assigned to Priority Level 4.
Clear the interrupt flag status bit associated with
the peripheral in the associated IFSx register.
Enable the interrupt source by setting the
interrupt enable control bit associated with the
source in the appropriate IECx register.
7.4.2
7.4.3
TRAP SERVICE ROUTINE
A Trap Service Routine (TSR) is coded like an ISR,
except that the appropriate trap status flag in the
INTCON1 register must be cleared to avoid re-entry
into the TSR.
7.4.4
INTERRUPT DISABLE
All user interrupts can be disabled using the following
procedure:
1.
2.
Push the current SR value onto the software
stack using the PUSH instruction.
Force the CPU to Priority Level 7 by inclusive
ORing the value OEh with SRL.
To enable user interrupts, the POP instruction may be
used to restore the previous SR value.
Note that only user interrupts with a priority level of 7 or
less can be disabled. Trap sources (Level 8-15) cannot
be disabled.
The DISI instruction provides a convenient way to
disable interrupts of Priority Levels 1-6 for a fixed
period of time. Level 7 interrupt sources are not
disabled by the DISI instruction.
INTERRUPT SERVICE ROUTINE
The method that is used to declare an ISR and initialize
the IVT with the correct vector address will depend on
the programming language (i.e., ‘C’ or assembler) and
the language development toolsuite that is used to
develop the application. In general, the user must clear
the interrupt flag in the appropriate IFSx register for the
source of the interrupt that the ISR handles. Otherwise,
the ISR will be re-entered immediately after exiting the
routine. If the ISR is coded in assembly language, it
must be terminated using a RETFIE instruction to
unstack the saved PC value, SRL value and old CPU
priority level.
DS39940D-page 106
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
8.0
OSCILLATOR
CONFIGURATION
Note:
• An on-chip USB PLL block to provide a stable 48 MHz
clock for the USB module, as well as a range of
frequency options for the system clock
• Software-controllable switching between various
clock sources
• Software-controllable postscaler for selective
clocking of CPU for system power savings
• A Fail-Safe Clock Monitor (FSCM) that detects
clock failure and permits safe application recovery
or shutdown
• A separate and independently configurable system
clock output for synchronizing external hardware
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
“PIC24F Family Reference Manual”,
Section 6. “Oscillator” (DS39700).
The oscillator system for PIC24FJ64GB004 family
devices has the following features:
• A total of four external and internal oscillator options
as clock sources, providing 11 different clock modes
FIGURE 8-1:
A simplified diagram of the oscillator system is shown
in Figure 8-1.
PIC24FJ64GB004 FAMILY CLOCK DIAGRAM
PIC24FJ64GB004 Family
48 MHz USB Clock
Primary Oscillator
XT, HS, EC
OSCO
USB PLL
PLL
&
DIV
OSCI
PLLDIV
REFO
8 MHz
4 MHz
FRCDIV
Peripherals
CLKDIV
LPRC
Oscillator
Reference Clock
Generator
FRC
CLKO
Postscaler
8 MHz
(nominal)
ECPLL,FRCPLL
CPDIV
Postscaler
FRC
Oscillator
REFOCON
XTPLL, HSPLL
LPRC
31 kHz (nominal)
Secondary Oscillator
CLKDIV
SOSC
SOSCO
SOSCI
CPU
SOSCEN
Enable
Oscillator
Clock Control Logic
Fail-Safe
Clock
Monitor
WDT, PWRT
Clock Source Option
for Other Modules
2010 Microchip Technology Inc.
DS39940D-page 107
PIC24FJ64GB004 FAMILY
8.1
CPU Clocking Scheme
8.2
The system clock source can be provided by one of
four sources:
• Primary Oscillator (POSC) on the OSCI and
OSCO pins
• Secondary Oscillator (SOSC) on the SOSCI and
SOSCO pins
• Fast Internal RC (FRC) Oscillator
• Low-Power Internal RC (LPRC) Oscillator
The primary oscillator and FRC sources have the
option of using the internal USB PLL block, which
generates both the USB module clock and a separate
system clock from the 96 MHz PLL. Refer to
Section 8.5 “Oscillator Modes and USB Operation”
for additional information.
The Fast Internal RC (FRC) provides an 8 MHz clock
source. It can optionally be reduced by the programmable clock divider to provide a range of system
clock frequencies.
The selected clock source generates the processor
and peripheral clock sources. The processor clock
source is divided by two to produce the internal instruction cycle clock, FCY. In this document, the instruction
cycle clock is also denoted by FOSC/2. The internal
instruction cycle clock, FOSC/2, can be provided on the
OSCO I/O pin for some operating modes of the primary
oscillator.
TABLE 8-1:
Initial Configuration on POR
The oscillator source (and operating mode) that is used
at a device Power-on Reset event is selected using Configuration bit settings. The oscillator Configuration bit
settings are located in the Configuration registers in the
program memory (refer to Section 26.1 “Configuration
Bits” for further details). The Primary Oscillator
Configuration bits, POSCMD (Configuration
Word 2), and the Initial Oscillator Select Configuration bits, FNOSC (Configuration Word 2),
select the oscillator source that is used at a Power-on
Reset. The FRC Primary Oscillator with Postscaler
(FRCDIV) is the default (unprogrammed) selection. The
secondary oscillator, or one of the internal oscillators,
may be chosen by programming these bit locations.
The Configuration bits allow users to choose between
the various clock modes, shown in Table 8-1.
8.2.1
CLOCK SWITCHING MODE
CONFIGURATION BITS
The FCKSM Configuration bits (Configuration
Word 2) are used to jointly configure device clock
switching and the Fail-Safe Clock Monitor (FSCM).
Clock switching is enabled only when FCKSM1 is
programmed (‘0’). The FSCM is enabled only when the
FCKSM bits are both programmed (‘00’).
CONFIGURATION BIT VALUES FOR CLOCK SELECTION
Oscillator Mode
Oscillator Source
POSCMD
FNOSC
Notes
Fast RC Oscillator with Postscaler
(FRCDIV)
Internal
11
111
1, 2
(Reserved)
Internal
xx
110
1
Low-Power RC Oscillator (LPRC)
Internal
11
101
1
Secondary
11
100
1
Primary Oscillator (XT) with PLL
Module (XTPLL)
Primary
01
011
Primary Oscillator (EC) with PLL
Module (ECPLL)
Primary
00
011
Primary Oscillator (HS)
Primary
10
010
Primary Oscillator (XT)
Primary
01
010
Primary Oscillator (EC)
Primary
00
010
Fast RC Oscillator with PLL Module
(FRCPLL)
Internal
11
001
1
Fast RC Oscillator (FRC)
Internal
11
000
1
Secondary (Timer1) Oscillator
(SOSC)
Note 1:
2:
OSCO pin function is determined by the OSCIOFCN Configuration bit.
This is the default oscillator mode for an unprogrammed (erased) device.
DS39940D-page 108
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
8.3
Control Registers
The operation of the oscillator is controlled by three
Special Function Registers (SFRs):
• OSCCON
• CLKDIV
• OSCTUN
REGISTER 8-1:
The OSCCON register (Register 8-1) is the main control register for the oscillator. It controls clock source
switching and allows the monitoring of clock sources.
The CLKDIV register (Register 8-2) controls the
features associated with Doze mode, as well as the
postscaler for the FRC Oscillator. The OSCTUN
register (Register 8-3) allows the user to fine tune the
FRC Oscillator over a range of approximately ±12%.
OSCCON: OSCILLATOR CONTROL REGISTER
U-0
R-0
R-0
R-0
U-0
R/W-x(1)
R/W-x(1)
R/W-x(1)
—
COSC2
COSC1
COSC0
—
NOSC2
NOSC1
NOSC0
bit 15
bit 8
R/SO-0
R/W-0
R-0(3)
U-0
R/CO-0
R/W-0
R/W-0
R/W-0
CLKLOCK
IOLOCK(2)
LOCK
—
CF
POSCEN
SOSCEN
OSWEN
bit 7
bit 0
Legend:
CO = Clearable Only bit
SO = Settable Only bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
Unimplemented: Read as ‘0’
bit 14-12
COSC: Current Oscillator Selection bits
111 = Fast RC Oscillator with Postscaler (FRCDIV)
110 = Reserved
101 = Low-Power RC Oscillator (LPRC)
100 = Secondary Oscillator (SOSC)
011 = Primary Oscillator with PLL module (XTPLL, HSPLL, ECPLL)
010 = Primary Oscillator (XT, HS, EC)
001 = Fast RC Oscillator with Postscaler and PLL module (FRCPLL)
000 = Fast RC Oscillator (FRC)
bit 11
Unimplemented: Read as ‘0’
bit 10-8
NOSC: New Oscillator Selection bits(1)
111 = Fast RC Oscillator with Postscaler (FRCDIV)
110 = Reserved
101 = Low-Power RC Oscillator (LPRC)
100 = Secondary Oscillator (SOSC)
011 = Primary Oscillator with PLL module (XTPLL, HSPLL, ECPLL)
010 = Primary Oscillator (XT, HS, EC)
001 = Fast RC Oscillator with Postscaler and PLL module (FRCPLL)
000 = Fast RC Oscillator (FRC)
Note 1:
2:
3:
x = Bit is unknown
Reset values for these bits are determined by the FNOSC Configuration bits.
The state of the IOLOCK bit can only be changed once an unlocking sequence has been executed. In
addition, if the IOL1WAY Configuration bit is ‘1’, once the IOLOCK bit is set, it cannot be cleared.
Also resets to ‘0’ during any valid clock switch or whenever a non-PLL Clock mode is selected.
2010 Microchip Technology Inc.
DS39940D-page 109
PIC24FJ64GB004 FAMILY
REGISTER 8-1:
OSCCON: OSCILLATOR CONTROL REGISTER (CONTINUED)
bit 7
CLKLOCK: Clock Selection Lock Enabled bit
If FSCM is enabled (FCKSM1 = 1):
1 = Clock and PLL selections are locked
0 = Clock and PLL selections are not locked and may be modified by setting the OSWEN bit
If FSCM is disabled (FCKSM1 = 0):
Clock and PLL selections are never locked and may be modified by setting the OSWEN bit.
bit 6
IOLOCK: I/O Lock Enable bit(2)
1 = I/O lock is active
0 = I/O lock is not active
bit 5
LOCK: PLL Lock Status bit(3)
1 = PLL module is in lock or PLL module start-up timer is satisfied
0 = PLL module is out of lock, PLL start-up timer is running or PLL is disabled
bit 4
Unimplemented: Read as ‘0’
bit 3
CF: Clock Fail Detect bit
1 = FSCM has detected a clock failure
0 = No clock failure has been detected
bit 2
POSCEN: Primary Oscillator Sleep Enable bit
1 = Primary oscillator continues to operate during Sleep mode
0 = Primary oscillator disabled during Sleep mode
bit 1
SOSCEN: 32 kHz Secondary Oscillator (SOSC) Enable bit
1 = Enable secondary oscillator
0 = Disable secondary oscillator
bit 0
OSWEN: Oscillator Switch Enable bit
1 = Initiate an oscillator switch to the clock source specified by the NOSC bits
0 = Oscillator switch is complete
Note 1:
2:
3:
Reset values for these bits are determined by the FNOSC Configuration bits.
The state of the IOLOCK bit can only be changed once an unlocking sequence has been executed. In
addition, if the IOL1WAY Configuration bit is ‘1’, once the IOLOCK bit is set, it cannot be cleared.
Also resets to ‘0’ during any valid clock switch or whenever a non-PLL Clock mode is selected.
DS39940D-page 110
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 8-2:
R/W-0
CLKDIV: CLOCK DIVIDER REGISTER
R/W-0
ROI
R/W-0
DOZE2
DOZE1
R/W-0
R/W-0
R/W-0
R/W-0
R/W-1
DOZE0
DOZEN(1)
RCDIV2
RCDIV1
RCDIV0
bit 15
bit 8
R/W-0
R/W-0
R/W-0
U-0
U-0
U-0
U-0
U-0
CPDIV1
CPDIV0
PLLEN
—
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
ROI: Recover on Interrupt bit
1 = Interrupts clear the DOZEN bit and reset the CPU peripheral clock ratio to 1:1
0 = Interrupts have no effect on the DOZEN bit
bit 14-12
DOZE: CPU Peripheral Clock Ratio Select bits
111 = 1:128
110 = 1:64
101 = 1:32
100 = 1:16
011 = 1:8
010 = 1:4
001 = 1:2
000 = 1:1
bit 11
DOZEN: DOZE Enable bit(1)
1 = DOZE bits specify the CPU peripheral clock ratio
0 = CPU peripheral clock ratio is set to 1:1
bit 10-8
RCDIV: FRC Postscaler Select bits
111 = 31.25 kHz (divide-by-256)
110 = 125 kHz (divide-by-64)
101 = 250 kHz (divide-by-32)
100 = 500 kHz (divide-by-16)
011 = 1 MHz (divide-by-8)
010 = 2 MHz (divide-by-4)
001 = 4 MHz (divide-by-2)
000 = 8 MHz (divide-by-1)
bit 7-6
CPDIV: USB System Clock Select bits (postscaler select from 32 MHz clock branch)
11 = 4 MHz (divide-by-8)(2)
10 = 8 MHz (divide-by-4)(2)
01 = 16 MHz (divide-by-2)
00 = 32 MHz (divide-by-1)
bit 5
PLLEN: 96 MHz PLL Enable bit
1 = Enable PLL
0 = Disable PLL
bit 4-0
Unimplemented: Read as ‘0’
Note 1:
2:
This bit is automatically cleared when the ROI bit is set and an interrupt occurs.
This setting is not allowed while the USB module is enabled.
2010 Microchip Technology Inc.
DS39940D-page 111
PIC24FJ64GB004 FAMILY
REGISTER 8-3:
OSCTUN: FRC OSCILLATOR TUNE REGISTER
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
—
TUN5(1)
TUN4(1)
TUN3(1)
TUN2(1)
TUN1(1)
TUN0(1)
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-6
Unimplemented: Read as ‘0’
bit 5-0
TUN: FRC Oscillator Tuning bits(1)
011111 = Maximum frequency deviation
011110 =
000001 =
000000 = Center frequency, oscillator is running at factory calibrated frequency
111111 =
100001 =
100000 = Minimum frequency deviation
Note 1:
8.4
Increments or decrements of TUN may not change the FRC frequency in equal steps over the FRC
tuning range and may not be monotonic.
Clock Switching Operation
With few limitations, applications are free to switch
between any of the four clock sources (POSC, SOSC,
FRC and LPRC) under software control and at any
time. To limit the possible side effects that could result
from this flexibility, PIC24F devices have a safeguard
lock built into the switching process.
Note:
The Primary Oscillator mode has three
different submodes (XT, HS and EC)
which are determined by the POSCMDx
Configuration bits. While an application
can switch to and from Primary Oscillator
mode in software, it cannot switch
between the different primary submodes
without reprogramming the device.
DS39940D-page 112
8.4.1
ENABLING CLOCK SWITCHING
To enable clock switching, the FCKSM Configuration
bits in CW2 must be programmed to ‘00’. (Refer to
Section 26.1 “Configuration Bits” for further details.)
If the FCKSM Configuration bits are unprogrammed
(‘1x’), the clock switching function and Fail-Safe Clock
Monitor function are disabled; this is the default setting.
The NOSCx control bits (OSCCON) do not
control the clock selection when clock switching is disabled. However, the COSCx bits (OSCCON)
will reflect the clock source selected by the FNOSCx
Configuration bits.
The OSWEN control bit (OSCCON) has no effect
when clock switching is disabled; it is held at ‘0’ at all
times.
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
8.4.2
OSCILLATOR SWITCHING
SEQUENCE
A recommended code sequence for a clock switch
includes the following:
At a minimum, performing a clock switch requires this
basic sequence:
1.
1.
2.
2.
3.
4.
5.
If
desired,
read
the
COSCx
bits
(OSCCON) to determine the current
oscillator source.
Perform the unlock sequence to allow a write to
the OSCCON register high byte.
Write the appropriate value to the NOSCx bits
(OSCCON) for the new oscillator source.
Perform the unlock sequence to allow a write to
the OSCCON register low byte.
Set the OSWEN bit to initiate the oscillator
switch.
3.
4.
5.
Once the basic sequence is completed, the system
clock hardware responds automatically as follows:
6.
1.
7.
2.
3.
4.
5.
6.
The clock switching hardware compares the
COSCx bits with the new value of the NOSCx
bits. If they are the same, then the clock switch
is a redundant operation. In this case, the
OSWEN bit is cleared automatically and the
clock switch is aborted.
If a valid clock switch has been initiated, the
LOCK (OSCCON) and CF (OSCCON)
bits are cleared.
The new oscillator is turned on by the hardware
if it is not currently running. If a crystal oscillator
must be turned on, the hardware will wait until
the OST expires. If the new source is using the
PLL, then the hardware waits until a PLL lock is
detected (LOCK = 1).
The hardware waits for 10 clock cycles from the
new clock source and then performs the clock
switch.
The hardware clears the OSWEN bit to indicate a
successful clock transition. In addition, the
NOSCx bit values are transferred to the COSCx
bits.
The old clock source is turned off at this time,
with the exception of LPRC (if WDT or FSCM is
enabled) or SOSC (if SOSCEN remains set).
Note 1: The processor will continue to execute
code throughout the clock switching
sequence. Timing-sensitive code should
not be executed during this time.
8.
Disable interrupts during the OSCCON register
unlock and write sequence.
Execute the unlock sequence for the OSCCON
high byte by writing 78h and 9Ah to
OSCCON
in
two
back-to-back
instructions.
Write new oscillator source to the NOSCx bits in
the instruction immediately following the unlock
sequence.
Execute the unlock sequence for the OSCCON
low byte by writing 46h and 57h to
OSCCON in two back-to-back instructions.
Set the OSWEN bit in the instruction immediately
following the unlock sequence.
Continue to execute code that is not
clock-sensitive (optional).
Invoke an appropriate amount of software delay
(cycle counting) to allow the selected oscillator
and/or PLL to start and stabilize.
Check to see if OSWEN is ‘0’. If it is, the switch
was successful. If OSWEN is still set, then
check the LOCK bit to determine the cause of
failure.
The core sequence for unlocking the OSCCON register
and initiating a clock switch is shown in Example 8-1.
EXAMPLE 8-1:
BASIC CODE SEQUENCE
FOR CLOCK SWITCHING
;Place the new oscillator selection in
W0
;OSCCONH (high byte) Unlock Sequence
MOV
#OSCCONH, w1
MOV
#0x78, w2
MOV
#0x9A, w3
MOV.b
w2, [w1]
MOV.b
w3, [w1]
;Set new oscillator selection
MOV.b
WREG, OSCCONH
;OSCCONL (low byte) unlock sequence
MOV
#OSCCONL, w1
MOV
#0x46, w2
MOV
#0x57, w3
MOV.b
w2, [w1]
MOV.b
w3, [w1]
;Start oscillator switch operation
BSET
OSCCON,#0
2: Direct clock switches between any
Primary Oscillator mode with PLL and
FRCPLL mode are not permitted. This
applies to clock switches in either direction. In these instances, the application
must switch to FRC mode as a transition
clock source between the two PLL
modes.
2010 Microchip Technology Inc.
DS39940D-page 113
PIC24FJ64GB004 FAMILY
8.5
Oscillator Modes and USB
Operation
TABLE 8-2:
Because of the timing requirements imposed by USB,
an internal clock of 48 MHz is required at all times while
the USB module is enabled. Since this is well beyond the
maximum CPU clock speed, a method is provided to
internally generate both the USB and system clocks
from a single oscillator source. PIC24FJ64GB004 family
devices use the same clock structure as other PIC24FJ
devices, but include a two-branch PLL system to
generate the two clock signals.
The USB PLL block is shown in Figure 8-2. In this
system, the input from the primary oscillator is divided
down by a PLL prescaler to generate a 4 MHz output.
This is used to drive an on-chip 96 MHz PLL frequency
multiplier to drive the two clock branches. One branch
uses a fixed, divide-by-2 frequency divider to generate
the 48 MHz USB clock. The other branch uses a fixed,
divide-by-3 frequency divider and configurable PLL
prescaler/divider to generate a range of system clock
frequencies. The CPDIV bits select the system clock
speed; available clock options are listed in Table 8-2.
The USB PLL prescaler does not automatically sense
the incoming oscillator frequency. The user must manually configure the PLL divider to generate the required
4 MHz output using the PLLDIV Configuration
bits. This limits the choices for primary oscillator
frequency to a total of 8 possibilities, shown in
Table 8-3.
FIGURE 8-2:
SYSTEM CLOCK OPTIONS
DURING USB OPERATION
MCU Clock Division
(CPDIV)
Microcontroller
Clock Frequency
None (00)
32 MHz
2 (01)
16 MHz
4 (10)
8 MHz
8 (11)
4 MHz
TABLE 8-3:
Input Oscillator
Frequency
VALID PRIMARY OSCILLATOR
CONFIGURATIONS FOR USB
OPERATIONS
Clock Mode
PLL Division
(PLLDIV)
48 MHz
ECPLL
12 (111)
32 MHz
ECPLL
8 (110)
24 MHz
HSPLL, ECPLL
6 (101)
20 MHz
HSPLL, ECPLL
5 (100)
16 MHz
HSPLL, ECPLL
4 (011)
12 MHz
HSPLL, ECPLL
3 (010)
8 MHz
XTPLL, ECPLL
2 (001)
4 MHz
XTPLL, ECPLL
1 (000)
USB PLL BLOCK
PLLDIV
Input from
FRC
(4 MHz or
8 MHz)
12
8
6
5
4
3
2
1
111
110
101
100
011
010
001
000
48 MHz Clock
for USB Module
2
4 MHz
96 MHz
PLL
3
32 MHz
PLL
Prescaler
Input from
POSC
PLL
Prescaler
FNOSC
8
4
2
1
11
10
01
00
PLL Output
for System Clock
CPDIV
8.5.1
CONSIDERATIONS FOR USB
OPERATION
When using the USB On-The-Go module in
PIC24FJ64GB004 family devices, users must always
observe these rules in configuring the system clock:
• For USB operation, the selected clock source
(EC, HS or XT) must meet the USB clock
tolerance requirements.
DS39940D-page 114
• The Primary Oscillator/PLL modes are the only
oscillator configurations that permit USB operation. There is no provision to provide a separate
external clock source to the USB module.
• All oscillator modes are available; however, USB
operation is not possible when these modes are
selected. They may still be useful in cases where
other power levels of operation are desirable and
the USB module is not needed (e.g., the application
is Sleeping and waiting for bus attachment).
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
8.6
8.6.1
Secondary Oscillator (SOSC)
BASIC SOSC OPERATION
PIC24FJ64GB004 family devices do not have to set the
SOSCEN bit to use the secondary oscillator. Any module
requiring the SOSC (such as RTCC, Timer1 or DSWDT)
will automatically turn on the SOSC when the clock signal
is needed. The SOSC, however, has a long start-up time.
To avoid delays for peripheral start-up, the SOSC can be
manually started using the SOSCEN bit.
To use the secondary oscillator, the SOSCSEL
bits (CW3) must be configured in an oscillator
mode – either ‘11’ or ‘01’. Setting SOSCSEL to ‘00’
configures the SOSC pins for Digital mode, enabling
digital I/O functionality on the pins. Digital functionality
will not be available if the SOSC is configured in either
of the oscillator modes.
8.6.2
LOW-POWER SOSC OPERATION
The secondary oscillator can operate in two distinct
levels of power consumption based on device configuration. In Low-Power mode, the oscillator operates in a
low drive strength, low-power state. By default, the
oscillator uses a higher drive strength, and therefore,
requires more power. The Secondary Oscillator Mode
Configuration bits, SOSCSEL (CW3),
determine the oscillator’s power mode. Programming
the SOSCSEL bits to ‘01’ selects low-power operation.
The lower drive strength of this mode makes the SOSC
more sensitive to noise and requires a longer start-up
time. When Low-Power mode is used, care must be
taken in the design and layout of the SOSC circuit to
ensure that the oscillator starts up and oscillates
properly.
8.6.3
EXTERNAL (DIGITAL) CLOCK
MODE (SCLKI)
The SOSC can also be configured to run from an
external 32 kHz clock source, rather than the internal
oscillator. In this mode, also referred to as Digital mode,
the clock source provided on the SCLKI pin is used to
clock any modules that are configured to use the
secondary oscillator. In this mode, the crystal driving
circuit is disabled and the SOSCEN bit (OSCCON)
has no effect.
8.6.4
In general, the crystal circuit connections should be as
short as possible. It is also good practice to surround
the crystal circuit with a ground loop or ground plane.
For more information on crystal circuit design, please
refer to Section 6 “Oscillator” (DS39700) of the
“PIC24F Family Reference Manual”. Additional information is also available in these Microchip Application
Notes:
• AN826, “Crystal Oscillator Basics and Crystal
Selection for rfPIC® and PICmicro® Devices”
(DS00826)
• AN849, “Basic PICmicro® Oscillator Design”
(DS00849).
8.7
Reference Clock Output
In addition to the CLKO output (FOSC/2) available in certain oscillator modes, the device clock in the
PIC24FJ64GB004 family devices can also be configured
to provide a reference clock output signal to a port pin.
This feature is available in all oscillator configurations
and allows the user to select a greater range of clock
submultiples to drive external devices in the application.
This reference clock output is controlled by the
REFOCON register (Register 8-4). Setting the ROEN
bit (REFOCON) makes the clock signal available
on the REFO pin. The RODIV bits (REFOCON)
enable the selection of 16 different clock divider
options.
The ROSSLP and ROSEL bits (REFOCON)
control the availability of the reference output during
Sleep mode. The ROSEL bit determines if the oscillator
on OSC1 and OSC2, or the current system clock
source, is used for the reference clock output. The
ROSSLP bit determines if the reference source is
available on REFO when the device is in Sleep mode.
To use the reference clock output in Sleep mode, both
the ROSSLP and ROSEL bits must be set. The device
clock must also be configured for one of the primary
modes (EC, HS or XT); otherwise, if the POSCEN bit is
not also set, the oscillator on OSC1 and OSC2 will be
powered down when the device enters Sleep mode.
Clearing the ROSEL bit allows the reference output
frequency to change as the system clock changes
during any clock switches.
SOSC LAYOUT CONSIDERATIONS
The pinout limitations on low pin count devices, such as
those in the PIC24FJ64GB004 family, may make the
SOSC more susceptible to noise than other PIC24F
devices. Unless proper care is taken in the design and
layout of the SOSC circuit, this external noise may
introduce inaccuracies into the oscillator’s period.
2010 Microchip Technology Inc.
DS39940D-page 115
PIC24FJ64GB004 FAMILY
REGISTER 8-4:
REFOCON: REFERENCE OSCILLATOR CONTROL REGISTER
R/W-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
ROEN
—
ROSSLP
ROSEL
RODIV3
RODIV2
RODIV1
RODIV0
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
ROEN: Reference Oscillator Output Enable bit
1 = Reference oscillator is enabled on REFO pin
0 = Reference oscillator is disabled
bit 14
Unimplemented: Read as ‘0’
bit 13
ROSSLP: Reference Oscillator Output Stop in Sleep bit
1 = Reference oscillator continues to run in Sleep
0 = Reference oscillator is disabled in Sleep
bit 12
ROSEL: Reference Oscillator Source Select bit
1 = Primary oscillator is used as the base clock. Note that the crystal oscillator must be enabled using
the FOSC bits; the crystal maintains the operation in Sleep mode.
0 = System clock used as the base clock; base clock reflects any clock switching of the device
bit 11-8
RODIV: Reference Oscillator Divisor Select bits
1111 = Base clock value divided by 32,768
1110 = Base clock value divided by 16,384
1101 = Base clock value divided by 8,192
1100 = Base clock value divided by 4,096
1011 = Base clock value divided by 2,048
1010 = Base clock value divided by 1,024
1001 = Base clock value divided by 512
1000 = Base clock value divided by 256
0111 = Base clock value divided by 128
0110 = Base clock value divided by 64
0101 = Base clock value divided by 32
0100 = Base clock value divided by 16
0011 = Base clock value divided by 8
0010 = Base clock value divided by 4
0001 = Base clock value divided by 2
0000 = Base clock value
bit 7-0
Unimplemented: Read as ‘0’
DS39940D-page 116
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
9.0
Note:
POWER-SAVING FEATURES
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
“PIC24F Family Reference Manual”,
Section 39. “Power-Saving Features
with Deep Sleep” (DS39727).
The PIC24FJ64GB004 family of devices provides the
ability to manage power consumption by selectively
managing clocking to the CPU and the peripherals. In
general, a lower clock frequency and a reduction in the
number of circuits being clocked constitutes lower
consumed power. All PIC24F devices manage power
consumption in four different ways:
• Clock Frequency
• Instruction-Based Sleep, Idle and Deep Sleep
modes
• Software Controlled Doze mode
• Selective Peripheral Control in Software
Combinations of these methods can be used to
selectively tailor an application’s power consumption,
while still maintaining critical application features, such
as timing-sensitive communications.
9.1
Clock Frequency and Clock
Switching
PIC24F devices allow for a wide range of clock
frequencies to be selected under application control. If
the system clock configuration is not locked, users can
choose low-power or high-precision oscillators by simply
changing the NOSC bits. The process of changing a
system clock during operation, as well as limitations to
the process, are discussed in more detail in Section 8.0
“Oscillator Configuration”.
9.2
Instruction-Based Power-Saving
Modes
PIC24F devices have two special power-saving modes
that are entered through the execution of a special
PWRSAV instruction. Sleep mode stops clock operation
and halts all code execution; Idle mode halts the CPU
and code execution, but allows peripheral modules to
continue operation. Deep Sleep mode stops clock
operation, code execution and all peripherals except
RTCC and DSWDT. It also freezes I/O states and
removes power to SRAM and Flash memory.
EXAMPLE 9-1:
PWRSAV
PWRSAV
BSET
PWRSAV
The assembly syntax of the PWRSAV instruction is
shown in Example 9-1.
Note:
SLEEP_MODE and IDLE_MODE are constants defined in the assembler include
file for the selected device.
Sleep and Idle modes can be exited as a result of an
enabled interrupt, WDT time-out or a device Reset.
When the device exits these modes, it is said to
“wake-up”.
9.2.1
SLEEP MODE
Sleep mode has these features:
• The system clock source is shut down. If an
on-chip oscillator is used, it is turned off.
• The device current consumption will be reduced
to a minimum provided that no I/O pin is sourcing
current.
• The I/O pin directions and states are frozen.
• The Fail-Safe Clock Monitor does not operate
during Sleep mode since the system clock source
is disabled.
• The LPRC clock will continue to run in Sleep
mode if the WDT or RTCC, with LPRC as clock
source, is enabled.
• The WDT, if enabled, is automatically cleared
prior to entering Sleep mode.
• Some device features or peripherals may
continue to operate in Sleep mode. This includes
items, such as the input change notification on the
I/O ports, or peripherals that use an external clock
input. Any peripheral that requires the system
clock source for its operation will be disabled in
Sleep mode.
The device will wake-up from Sleep mode on any of
these events:
• On any interrupt source that is individually
enabled
• On any form of device Reset
• On a WDT time-out
On wake-up from Sleep, the processor will restart with
the same clock source that was active when Sleep
mode was entered.
PWRSAV INSTRUCTION SYNTAX
#SLEEP_MODE
#IDLE_MODE
DSCON, #DSEN
#SLEEP_MODE
2010 Microchip Technology Inc.
;
;
;
;
Put the device into SLEEP mode
Put the device into IDLE mode
Enable Deep Sleep
Put the device into Deep SLEEP mode
DS39940D-page 117
PIC24FJ64GB004 FAMILY
9.2.2
IDLE MODE
Note:
Idle mode has these features:
• The CPU will stop executing instructions.
• The WDT is automatically cleared.
• The system clock source remains active. By
default, all peripheral modules continue to operate
normally from the system clock source, but can
also be selectively disabled (see Section 9.4
“Selective Peripheral Module Control”).
• If the WDT or FSCM is enabled, the LPRC will
also remain active.
The device will wake from Idle mode on any of these
events:
• Any interrupt that is individually enabled
• Any device Reset
• A WDT time-out
9.2.4.1
INTERRUPTS COINCIDENT WITH
POWER SAVE INSTRUCTIONS
If the PWRSAV command is not given within three
instruction cycles, the DSEN bit will be cleared by the
hardware and must be set again by the software before
entering Deep Sleep mode. The DSEN bit is also
automatically cleared when exiting the Deep Sleep
mode.
Note:
1.
2.
9.2.4
3.
In PIC24FJ64GB004 family devices, Deep Sleep mode
is intended to provide the lowest levels of power
consumption available, without requiring the use of
external switches to completely remove all power from
the device. Entry into Deep Sleep mode is completely
under software control. Exit from Deep Sleep mode can
be triggered from any of the following events:
•
•
•
•
•
POR event
MCLR event
RTCC alarm (If the RTCC is present)
External Interrupt 0
Deep Sleep Watchdog Timer (DSWDT) time-out
To re-enter Deep Sleep after a Deep Sleep
wake-up, allow a delay of at least 3 TCY
after clearing the RELEASE bit.
The sequence to enter Deep Sleep mode is:
Any interrupt that coincides with the execution of a
PWRSAV instruction (except for Deep Sleep mode) will
be held off until entry into Sleep or Idle mode has completed. The device will then wake-up from Sleep or Idle
mode.
DEEP SLEEP MODE
Entering Deep Sleep Mode
Deep Sleep mode is entered by setting the DSEN bit in
the DSCON register, and then executing a SLEEP
instruction (PWRSAV #SLEEP_MODE) within one to three
instruction cycles to minimize the chance that Deep
Sleep will be spuriously entered.
On wake-up from Idle mode, the clock is reapplied to
the CPU and instruction execution begins immediately,
starting with the instruction following the PWRSAV
instruction or the first instruction in the ISR.
9.2.3
Since Deep Sleep mode powers down the
microcontroller by turning off the on-chip
VDDCORE voltage regulator, Deep Sleep
capability is available only when operating
with the internal regulator enabled.
4.
5.
6.
If the application requires the Deep Sleep WDT,
enable it and configure its clock source (see
Section 9.2.4.7 “Deep Sleep WDT” for
details).
If the application requires Deep Sleep BOR,
enable it by programming the DSBOREN
Configuration bit (CW4).
If the application requires wake-up from Deep
Sleep on RTCC alarm, enable and configure the
RTCC module (see Section 20.0 “Real-Time
Clock and Calendar (RTCC)” for more
information).
If needed, save any critical application context
data by writing it to the DSGPR0 and DSGPR1
registers (optional).
Enable Deep Sleep mode by setting the DSEN
bit (DSCON).
Enter Deep Sleep mode by immediately issuing
a PWRSAV #0 instruction.
Any time the DSEN bit is set, all bits in the DSWAKE
register will be automatically cleared.
In Deep Sleep mode, it is possible to keep the device
Real-Time Clock and Calendar (RTCC) running without
the loss of clock cycles.
The device has a dedicated Deep Sleep Brown-out
Reset (DSBOR) and a Deep Sleep Watchdog Timer
Reset (DSWDT) for monitoring voltage and time-out
events. The DSBOR and DSWDT are independent of
the standard BOR and WDT used with other
power-managed modes (Sleep, Idle and Doze).
DS39940D-page 118
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
9.2.4.2
Special Cases when Entering Deep
Sleep Mode
When entering Deep Sleep mode, there are certain
circumstances that require a delay between setting the
DSEN bit and executing the PWRSAV instruction. These
can be generally reduced to three scenarios:
1.
2.
3.
Scenario (1): use an external wake-up source
(INT0) or the RTCC
Scenario (2): with application-level interrupts
that can be temporarily disabled
Scenario (3): with interrupts that must be
monitored
In the first scenario, the application requires a wake-up
from Deep Sleep on the assertion of the INT0 pin or the
RTCC interrupt. In this case, three NOP instructions
must be inserted to properly synchronize the detection
of an asynchronous INT0 interrupt after the device
enters Deep Sleep mode. If the application does not
use wake-up on INT0 or RTCC, the NOP instructions
are optional.
In the second scenario, the application also uses
interrupts which can be briefly ignored. With these
applications, an interrupt event during the execution of
the NOP instructions may cause an ISR to be executed.
This means that more than three instruction cycles will
elapse before returning to the code and that the DSEN
bit will be cleared. To prevent the missed entry into
Deep Sleep, temporarily disable interrupts prior to
entering Deep Sleep mode. Invoking the DISI instruction for four cycles is sufficient to prevent interrupts
from disrupting Deep Sleep entry.
In the third scenario, interrupts cannot be ignored even
briefly; constant interrupt detection is required, even
during the interval between setting DSEN and executing
the PWRSAV instruction. For these cases, it is possible to
disable interrupts and test for an interrupt condition,
skipping the PWRSAV instruction if necessary. Testing for
interrupts can be accomplished by checking the status of
the CPUIRQ bit (INTTREG); if an unserviced interrupt is pending, this bit will be set. If CPUIRQ is set prior
to executing the PWRSAV instruction, the instruction is
skipped. At this point, the DISI instruction has expired
(being more than 4 instructions from when it was
executed) and the application vectors to the appropriate
ISR. When the application returns, it can either attempt
to re-enter Deep Sleep mode or perform some other
system function. In either case, the application must
have some functional code located, following the
PWRSAV instruction, in the event that the PWRSAV
instruction is skipped and the device does not enter
Deep Sleep mode.
2010 Microchip Technology Inc.
Examples for implementing these cases are shown in
Example 9-2. It is recommended that an assembler, or
in-line C routine, be used in these cases to ensure that
the code executes in the number of cycles required.
EXAMPLE 9-2:
IMPLEMENTING THE
SPECIAL CASES FOR
ENTERING DEEP SLEEP
// Case 1: simplest delay scenario
//
asm("bset DSCON, #15");
asm("nop");
asm("nop");
asm("nop");
asm("pwrsav #0");
//
// Case 2: interrupts disabled
//
asm("disi #4");
asm("bset DSCON, #15");
asm("nop");
asm("nop");
asm("nop");
asm("pwrsav #0");
//
// Case 3: interrupts disabled with
// interrupt testing
//
asm("disi #4");
asm("bset DSCON, #15");
asm("nop");
asm("nop");
asm("btss INTTREG, #15");
asm("pwrsav #0");
// continue with application code here
//
DS39940D-page 119
PIC24FJ64GB004 FAMILY
9.2.4.3
Exiting Deep Sleep Mode
Deep Sleep mode exits on any one of the following events:
• POR event on VDD supply. If there is no DSBOR
circuit to re-arm the VDD supply POR circuit, the
external VDD supply must be lowered to the
natural arming voltage of the POR circuit.
• DSWDT time-out. When the DSWDT timer times
out, the device exits Deep Sleep.
• RTCC alarm (if RTCEN = 1).
• Assertion (‘0’) of the MCLR pin.
• Assertion of the INT0 pin (if the interrupt was
enabled before Deep Sleep mode was entered).
The polarity configuration is used to determine the
assertion level (‘0’ or ‘1’) of the pin that will cause
an exit from Deep Sleep mode. Exiting from Deep
Sleep mode requires a change on the INT0 pin
while in Deep Sleep mode.
Note:
Any interrupt pending when entering Deep
Sleep mode is cleared.
Exiting Deep Sleep mode generally does not retain the
state of the device and is equivalent to a Power-on
Reset (POR) of the device. Exceptions to this include
the RTCC (if present), which remains operational
through the wake-up, the DSGPRx registers and
DSWDT.
9.2.4.4
Deep Sleep Wake-up Time
Since wake-up from Deep Sleep results in a POR, the
wake-up time from Deep Sleep is the same as the
device POR time. Also, because the internal regulator
is turned off, the voltage on VCAP may drop depending
on how long the device is asleep. If VCAP has dropped
below 2V, then there will be additional wake-up time
while the regulator charges VCAP.
Deep Sleep wake-up time is specified in Section 29.0
“Electrical Characteristics” as TDSWU. This specification indicates the worst case wake-up time, including the
full POR Reset time (including TPOR and TRST), as well
as the time to fully charge a 10 F capacitor on VCAP
which has discharged to 0V. Wake-up may be
significantly faster if VCAP has not discharged.
9.2.4.5
Saving Context Data with the
DSGPR0/DSGPR1 Registers
As exiting Deep Sleep mode causes a POR, most
Special Function Registers reset to their default POR
values. In addition, because VDDCORE power is not
supplied in Deep Sleep mode, information in data RAM
may be lost when exiting this mode.
The sequence for exiting Deep Sleep mode is:
Applications which require critical data to be saved
prior to Deep Sleep may use the Deep Sleep General
Purpose registers, DSGPR0 and DSGPR1, or data
EEPROM (if available). Unlike other SFRs, the contents of these registers are preserved while the device
is in Deep Sleep mode. After exiting Deep Sleep,
software can restore the data by reading the registers
and clearing the RELEASE bit (DSCON).
1.
9.2.4.6
Wake-up events that occur from the time Deep Sleep
exits, until the time that the POR sequence completes,
are ignored and are not captured in the DSWAKE
register.
2.
3.
4.
5.
6.
After a wake-up event, the device exits Deep
Sleep and performs a POR. The DSEN bit is
cleared automatically. Code execution resumes
at the Reset vector.
To determine if the device exited Deep Sleep,
read the Deep Sleep bit, DPSLP (RCON).
This bit will be set if there was an exit from Deep
Sleep mode. If the bit is set, clear it.
Determine the wake-up source by reading the
DSWAKE register.
Determine if a DSBOR event occurred during
Deep Sleep mode by reading the DSBOR bit
(DSCON).
If application context data has been saved, read
it back from the DSGPR0 and DSGPR1
registers.
Clear the RELEASE bit (DSCON).
DS39940D-page 120
I/O Pins During Deep Sleep Mode
During Deep Sleep, the general purpose I/O pins retain
their previous states and the Secondary Oscillator
(SOSC) will remain running, if enabled. Pins that are
configured as inputs (TRIS bit set) prior to entry into
Deep Sleep remain high-impedance during Deep
Sleep. Pins that are configured as outputs (TRIS bit
clear) prior to entry into Deep Sleep remain as output
pins during Deep Sleep. While in this mode, they
continue to drive the output level determined by their
corresponding LAT bit at the time of entry into Deep
Sleep.
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PIC24FJ64GB004 FAMILY
Once the device wakes back up, all I/O pins continue to
maintain their previous states, even after the device
has finished the POR sequence and is executing application code again. Pins configured as inputs during
Deep Sleep remain high-impedance and pins configured as outputs continue to drive their previous value.
After waking up, the TRIS and LAT registers, and the
SOSCEN bit (OSCCON) are reset. If firmware
modifies any of these bits or registers, the I/O will not
immediately go to the newly configured states. Once
the firmware clears the RELEASE bit (DSCON) the
I/O pins are “released”. This causes the I/O pins to take
the states configured by their respective TRIS and LAT
bit values.
This means that keeping the SOSC running after
waking up requires the SOSCEN bit to be set before
clearing RELEASE.
If the Deep Sleep BOR (DSBOR) is enabled, and a
DSBOR or a true POR event occurs during Deep
Sleep, the I/O pins will be immediately released similar
to clearing the RELEASE bit. All previous state information will be lost, including the general purpose
DSGPR0 and DSGPR1 contents.
If a MCLR Reset event occurs during Deep Sleep, the
DSGPRx, DSCON and DSWAKE registers will remain
valid and the RELEASE bit will remain set. The state of
the SOSC will also be retained. The I/O pins, however,
will be reset to their MCLR Reset state. Since
RELEASE is still set, changes to the SOSCEN bit
(OSCCON) cannot take effect until the RELEASE
bit is cleared.
In all other Deep Sleep wake-up cases, application
firmware must clear the RELEASE bit in order to
reconfigure the I/O pins.
9.2.4.7
Deep Sleep WDT
To enable the DSWDT in Deep Sleep mode, program
the Configuration bit, DSWDTEN (CW4). The
device Watchdog Timer (WDT) need not be enabled for
the DSWDT to function. Entry into Deep Sleep mode
automatically resets the DSWDT.
9.2.4.8
Switching Clocks in Deep Sleep Mode
Both the RTCC and the DSWDT may run from either
SOSC or the LPRC clock source. This allows both the
RTCC and DSWDT to run without requiring both the
LPRC and SOSC to be enabled together, reducing
power consumption.
Running the RTCC from LPRC will result in a loss of
accuracy in the RTCC of approximately 5 to 10%. If an
accurate RTCC is required, it must be run from the
SOSC clock source. The RTCC clock source is selected
with the RTCOSC Configuration bit (CW4).
Under certain circumstances, it is possible for the
DSWDT clock source to be off when entering Deep
Sleep mode. In this case, the clock source is turned on
automatically (if DSWDT is enabled), without the need
for software intervention. However, this can cause a
delay in the start of the DSWDT counters. In order to
avoid this delay when using SOSC as a clock source,
the application can activate SOSC prior to entering
Deep Sleep mode.
9.2.4.9
Checking and Clearing the Status of
Deep Sleep Mode
Upon entry into Deep Sleep mode, the status bit,
DPSLP (RCON), becomes set and must be
cleared by software.
On power-up, the software should read this status bit to
determine if the Reset was due to an exit from Deep
Sleep mode and clear the bit if it is set. Of the four
possible combinations of DPSLP and POR bit states,
three cases can be considered:
• Both the DPSLP and POR bits are cleared. In this
case, the Reset was due to some event other
than a Deep Sleep mode exit.
• The DPSLP bit is clear, but the POR bit is set.
This is a normal Power-on Reset.
• Both the DPSLP and POR bits are set. This
means that Deep Sleep mode was entered, the
device was powered down and Deep Sleep mode
was exited.
The DSWDT clock source is selected by the
DSWDTOSC Configuration bit (CW4). The
postscaler options are programmed by the
DSWDTPS Configuration bits (CW4). The
minimum time-out period that can be achieved is
2.1 ms and the maximum is 25.7 days. For more
details on the CW4 Configuration register and DSWDT
configuration options, refer to Section 26.0 “Special
Features”.
2010 Microchip Technology Inc.
DS39940D-page 121
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9.2.4.10
Power-on Resets (PORs)
9.2.4.11
Summary of Deep Sleep Sequence
VDD voltage is monitored to produce PORs. Since exiting from Deep Sleep functionally looks like a POR, the
technique described in Section 9.2.4.9 “Checking
and Clearing the Status of Deep Sleep Mode”
should be used to distinguish between Deep Sleep and
a true POR event.
To review, these are the necessary steps involved in
invoking and exiting Deep Sleep mode:
When a true POR occurs, the entire device, including
all Deep Sleep logic (Deep Sleep registers, RTCC,
DSWDT, etc.) is reset.
3.
1.
2.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
DS39940D-page 122
Device exits Reset and begins to execute its
application code.
If DSWDT functionality is required, program the
appropriate Configuration bit.
Select the appropriate clock(s) for the DSWDT
and RTCC (optional).
Enable and configure the RTCC (optional).
Write context data to the DSGPRx registers
(optional).
Enable the INT0 interrupt (optional).
Set the DSEN bit in the DSCON register.
Enter Deep Sleep by issuing a PWRSV
#SLEEP_MODE command.
Device exits Deep Sleep when a wake-up event
occurs.
The DSEN bit is automatically cleared.
Read and clear the DPSLP status bit in RCON,
and the DSWAKE status bits.
Read the DSGPRx registers (optional).
Once all state related configurations are
complete, clear the RELEASE bit.
Application resumes normal operation.
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REGISTER 9-1:
DSCON: DEEP SLEEP CONTROL REGISTER
R/W-0, HC
U-0
U-0
U-0
U-0
U-0
U-0
U-0
DSEN(1)
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
—
—
U-0
—
U-0
—
U-0
—
U-0
—
R/W-0, HCS
R/C-0, HS
(1,2,3)
DSBOR
RELEASE(1,2)
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
C = Clearable bit
U = Unimplemented, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
HC = Hardware Clearable bit
HS = Hardware Settable bit
HCS = Hardware Clearable/Settable bit
bit 15
DSEN: Deep Sleep Enable bit(1)
1 = Device entered Deep Sleep when PWRSAV #0 was executed in the next instruction
0 = Device entered normal Sleep when PWRSAV #0 was executed
bit 14-2
Unimplemented: Read as ‘0’
bit 1
DSBOR: Deep Sleep BOR Event Status bit(1,2,3)
1 = The DSBOR is active and a BOR event is detected during Deep Sleep
0 = The DSBOR is disabled or is active and does not detect a BOR event during Deep Sleep
bit 0
RELEASE: I/O Pin State Deep Sleep Release bit(1,2)
1 = I/O pins and SOSC maintain their states following exit from Deep Sleep, regardless of their LAT
and TRIS configuration
0 = I/O pins and SOSC are released from their Deep Sleep states. The pin state is controlled by the
LAT and TRIS configurations, and the SOSCEN bit.
Note 1:
2:
3:
These bits are reset only in the case of a POR event outside of Deep Sleep mode.
Reset value is ‘0’ for initial power-on POR only and ‘1’ for Deep Sleep POR.
This is a status bit only; a DSBOR event will NOT cause a wake-up from Deep Sleep.
2010 Microchip Technology Inc.
DS39940D-page 123
PIC24FJ64GB004 FAMILY
REGISTER 9-2:
DSWAKE: DEEP SLEEP WAKE-UP SOURCE REGISTER
U-0
U-0
U-0
U-0
U-0
U-0
U-0
R/W-0, HS
—
—
—
—
—
—
—
DSINT0(1)
bit 15
bit 8
R/W-0, HS
DSFLT
U-0
(1)
—
U-0
—
R/W-0, HS
R/W-0, HS
R/W-0, HS
(1)
(1)
(1)
DSWDT
DSRTC
U-0
R/W-0, HS
—
DSPOR(2)
DSMCLR
bit 7
bit 0
Legend:
HS = Hardware Settable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-9
Unimplemented: Read as ‘0’
bit 8
DSINT0: Interrupt-on-Change bit(1)
1 = External Interrupt 0 was asserted during Deep Sleep
0 = External Interrupt 0 was not asserted during Deep Sleep
bit 7
DSFLT: Deep Sleep Fault Detected bit(1)
1 = A Fault occurred during Deep Sleep and some Deep Sleep configuration settings may have been
corrupted
0 = No Fault was detected during Deep Sleep
bit 6-5
Unimplemented: Read as ‘0’
bit 4
DSWDT: Deep Sleep Watchdog Timer Time-out bit(1)
1 = The Deep Sleep Watchdog Timer timed out during Deep Sleep
0 = The Deep Sleep Watchdog Timer did not time out during Deep Sleep
bit 3
DSRTC: Real-Time Clock and Calendar Alarm bit(1)
1 = The Real-Time Clock and Calendar triggered an alarm during Deep Sleep
0 = The Real-Time Clock and Calendar did not trigger an alarm during Deep Sleep
bit 2
DSMCLR: Deep Sleep MCLR Event bit(1)
1 = The MCLR pin was asserted during Deep Sleep
0 = The MCLR pin was not asserted during Deep Sleep
bit 1
Unimplemented: Read as ‘0’
bit 0
DSPOR: Power-on Reset Event bit(2)
1 = The VDD supply POR circuit was active and a POR event was detected
0 = The VDD supply POR circuit was not active, or was active, but did not detect a POR event
Note 1:
2:
This bit can only be set while the device is in Deep Sleep mode.
This bit can be set outside of Deep Sleep.
DS39940D-page 124
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PIC24FJ64GB004 FAMILY
9.3
Doze Mode
Generally, changing clock speed and invoking one of
the power-saving modes are the preferred strategies
for reducing power consumption. There may be
circumstances, however, where this is not practical. For
example, it may be necessary for an application to
maintain uninterrupted synchronous communication,
even while it is doing nothing else. Reducing system
clock speed may introduce communication errors,
while using a power-saving mode may stop
communications completely.
Doze mode is a simple and effective alternative method
to reduce power consumption while the device is still
executing code. In this mode, the system clock
continues to operate from the same source and at the
same speed. Peripheral modules continue to be
clocked at the same speed while the CPU clock speed
is reduced. Synchronization between the two clock
domains is maintained, allowing the peripherals to
access the SFRs while the CPU executes code at a
slower rate.
Doze mode is enabled by setting the DOZEN bit
(CLKDIV). The ratio between peripheral and core
clock speed is determined by the DOZE bits
(CLKDIV). There are eight possible
configurations, from 1:1 to 1:128, with 1:1 being the
default.
It is also possible to use Doze mode to selectively
reduce power consumption in event-driven applications. This allows clock-sensitive functions, such as
synchronous communications, to continue without
interruption while the CPU Idles, waiting for something
to invoke an interrupt routine. Enabling the automatic
return to full-speed CPU operation on interrupts is
enabled by setting the ROI bit (CLKDIV). By
default, interrupt events have no effect on Doze mode
operation.
2010 Microchip Technology Inc.
9.4
Selective Peripheral Module
Control
Idle and Doze modes allow users to substantially
reduce power consumption by slowing or stopping the
CPU clock. Even so, peripheral modules still remain
clocked, and thus, consume power. There may be
cases where the application needs what these modes
do not provide: the allocation of power resources to
CPU processing with minimal power consumption from
the peripherals.
PIC24F devices address this requirement by allowing
peripheral modules to be selectively disabled, reducing
or eliminating their power consumption. This can be
done with two control bits:
• The Peripheral Enable bit, generically named
“XXXEN”, located in the module’s main control
SFR.
• The Peripheral Module Disable (PMD) bit,
generically named “XXXMD”, located in one of the
PMD Control registers.
Both bits have similar functions in enabling or disabling
its associated module. Setting the PMD bit for a module
disables all clock sources to that module, reducing its
power consumption to an absolute minimum. In this
state, the control and status registers associated with
the peripheral will also be disabled, so writes to those
registers will have no effect and read values will be
invalid. Many peripheral modules have a corresponding
PMD bit.
In contrast, disabling a module by clearing its XXXEN bit
disables its functionality, but leaves its registers available
to be read and written to. This reduces power consumption, but not by as much as setting the PMD bit does.
Most peripheral modules have an enable bit; exceptions
include input capture, output compare and RTCC.
To achieve more selective power savings, peripheral
modules can also be selectively disabled when the
device enters Idle mode. This is done through the
control bit of the generic name format, “XXXIDL”. By
default, all modules that can operate during Idle mode
will do so. Using the disable on Idle feature allows
further reduction of power consumption during Idle
mode, enhancing power savings for extremely critical
power applications.
DS39940D-page 125
PIC24FJ64GB004 FAMILY
NOTES:
DS39940D-page 126
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
10.0
Note:
I/O PORTS
When a peripheral is enabled and the peripheral is
actively driving an associated pin, the use of the pin as
a general purpose output pin is disabled. The I/O pin
may be read, but the output driver for the parallel port
bit will be disabled. If a peripheral is enabled, but the
peripheral is not actively driving a pin, that pin may be
driven by a port.
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
“PIC24F Family Reference Manual”,
Section 12. “I/O Ports with Peripheral
Pin Select (PPS)” (DS39711).
All of the device pins (except VDD, VSS, MCLR and
OSCI/CLKI) are shared between the peripherals and
the parallel I/O ports. All I/O input ports feature Schmitt
Trigger inputs for improved noise immunity.
10.1
Parallel I/O (PIO) Ports
A parallel I/O port that shares a pin with a peripheral is, in
general, subservient to the peripheral. The peripheral’s
output buffer data and control signals are provided to a
pair of multiplexers. The multiplexers select whether the
peripheral or the associated port has ownership of the
output data and control signals of the I/O pin. The logic
also prevents “loop through”, in which a port’s digital output can drive the input of a peripheral that shares the
same pin. Figure 10-1 shows how ports are shared with
other peripherals and the associated I/O pin to which
they are connected.
FIGURE 10-1:
All port pins have three registers directly associated
with their operation as digital I/Os. The Data Direction
register (TRIS) determines whether the pin is an input
or an output. If the data direction bit is a ‘1’, then the pin
is an input. All port pins are defined as inputs after a
Reset. Reads from the Output Latch register (LAT),
read the latch. Writes to the Output Latch register, write
the latch. Reads from the port (PORT), read the port
pins, while writes to the port pins, write the latch.
Any bit and its associated data and control registers
that are not valid for a particular device will be
disabled. That means the corresponding LAT and
TRIS registers, and the port pin will read as zeros.
When a pin is shared with another peripheral or function that is defined as an input only, it is regarded as a
dedicated port because there is no other competing
source of outputs.
BLOCK DIAGRAM OF A TYPICAL SHARED PORT STRUCTURE
Peripheral Module
Output Multiplexers
Peripheral Input Data
Peripheral Module Enable
I/O
Peripheral Output Enable
1
Peripheral Output Data
0
PIO Module
Read TRIS
Data Bus
WR TRIS
1
Output Enable
Output Data
0
D
Q
I/O Pin
CK
TRIS Latch
D
WR LAT +
WR PORT
Q
CK
Data Latch
Read LAT
Input Data
Read PORT
2010 Microchip Technology Inc.
DS39940D-page 127
PIC24FJ64GB004 FAMILY
10.1.1
OPEN-DRAIN CONFIGURATION
In addition to the PORT, LAT and TRIS registers for
data control, each port pin can also be individually
configured for either digital or open-drain output. This is
controlled by the Open-Drain Control register, ODCx,
associated with each port. Setting any of the bits configures the corresponding pin to act as an open-drain
output.
The open-drain feature allows the generation of
outputs higher than VDD (e.g., 5V) on any desired
digital only pins by using external pull-up resistors. The
maximum open-drain voltage allowed is the same as
the maximum VIH specification.
10.2
Configuring Analog Port Pins
The AD1PCFGL and TRIS registers control the operation of the A/D port pins. Setting a port pin as an analog
input also requires that the corresponding TRIS bit be
set. If the TRIS bit is cleared (output), the digital output
level (VOH or VOL) will be converted.
10.2.2
ANALOG INPUT PINS AND
VOLTAGE CONSIDERATIONS
The voltage tolerance of pins used as device inputs is
dependent on the pin’s input function. Pins that are
used as digital only inputs are able to handle DC
voltages up to 5.5V, a level typical for digital logic
circuits. In contrast, pins that also have analog input
functions of any kind can only tolerate voltages up to
VDD. Voltage excursions beyond VDD on these pins
should be avoided.
Table 10-1 summarizes the input voltage capabilities.
Refer to Section 29.0 “Electrical Characteristics” for
more details.
TABLE 10-1:
Port or Pin
PORTA
PORTB
Pins configured as digital inputs will not convert an
analog input. Analog levels on any pin that is defined as
a digital input (including the ANx pins) may cause the
input buffer to consume current that exceeds the
device specifications.
PORTA(1)
I/O PORT WRITE/READ TIMING
Tolerate
d Input
Description
VDD
Only VDD input
levels are tolerated.
5.5V
Tolerates input levels
above VDD, useful for
most standard logic.
PORTB
When reading the PORT register, all pins configured as
analog input channels will read as cleared (a low level).
10.2.1
INPUT VOLTAGE TOLERANCE
PORTC(1)
PORTB
PORTB
PORTC(1)
Note 1:
Not available on 28-pin devices.
One instruction cycle is required between a port
direction change or port write operation and a read
operation of the same port. Typically, this instruction
would be a NOP (Example 10-1).
EXAMPLE 10-1:
MOV
MOV
NOP
BTSS
0xFF00, W0
W0, TRISB
PORTB, #13
DS39940D-page 128
PORT WRITE/READ EXAMPLE
;
;
;
;
Configure PORTB as inputs
and PORTB as outputs
Delay 1 cycle
Next Instruction
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10.3
Input Change Notification
The input change notification function of the I/O ports
allows the PIC24FJ64GB004 family of devices to
generate interrupt requests to the processor in
response to a change of state on selected input pins.
This feature is capable of detecting input
Change-of-States (COS) even in Sleep mode, when
the clocks are disabled. Depending on the device pin
count, there are up to 29 external inputs that may be
selected (enabled) for generating an interrupt request
on a Change-of-State.
Registers, CNEN1 and CNEN2, contain the interrupt
enable control bits for each of the CN input pins. Setting
any of these bits enables a CN interrupt for the
corresponding pins.
Each CN pin has a weak pull-up connected to it. The
pull-up acts as a current source that is connected to the
pin. This eliminates the need for external resistors
when push button or keypad devices are connected.
The pull-ups are separately enabled using the CNPU1
and CNPU2 registers (for pull-ups). Each CN pin has
individual control bits for its pull-up. Setting a control bit
enables the weak pull-up for the corresponding pin.
When the internal pull-up is selected, the pin pulls up to
VDD-0.7V (typical). Make sure that there is no external
pull-up source when the internal pull-ups are enabled,
as the voltage difference can cause a current path.
Note:
10.4
Pull-ups on change notification pins
should always be disabled whenever the
port pin is configured as a digital output.
Peripheral Pin Select (PPS)
A major challenge in general purpose devices is providing the largest possible set of peripheral features while
minimizing the conflict of features on I/O pins. In an
application that needs to use more than one peripheral
multiplexed on a single pin, inconvenient work arounds
in application code or a complete redesign may be the
only option.
The Peripheral Pin Select feature provides an alternative
to these choices by enabling the user’s peripheral set
selection and their placement on a wide range of I/O
pins. By increasing the pinout options available on a particular device, users can better tailor the microcontroller
to their entire application, rather than trimming the
application to fit the device.
The Peripheral Pin Select feature operates over a fixed
subset of digital I/O pins. Users may independently
map the input and/or output of any one of many digital
peripherals to any one of these I/O pins. Peripheral Pin
Select is performed in software and generally does not
require the device to be reprogrammed. Hardware
2010 Microchip Technology Inc.
safeguards are included that prevent accidental or
spurious changes to the peripheral mapping once it has
been established.
10.4.1
AVAILABLE PINS
The Peripheral Pin Select feature is used with a range
of up to 25 pins, depending on the particular device and
its pin count. Pins that support the Peripheral Pin
Select feature include the designation “RPn” in their full
pin designation, where “n” is the remappable pin
number.
See Table 1-2 for a summary of pinout options in each
package offering.
10.4.2
AVAILABLE PERIPHERALS
The peripherals managed by the Peripheral Pin Select
are all digital only peripherals. These include general
serial communications (UART and SPI), general
purpose timer clock inputs, timer related peripherals
(input capture and output compare) and external
interrupt inputs. Also included are the outputs of the
comparator module, since these are discrete digital
signals.
Peripheral Pin Select is not available for I2C™ change
notification inputs, RTCC alarm outputs or peripherals
with analog inputs.
A key difference between pin select and non pin select
peripherals is that pin select peripherals are not associated with a default I/O pin. The peripheral must
always be assigned to a specific I/O pin before it can be
used. In contrast, non pin select peripherals are always
available on a default pin, assuming that the peripheral
is active and not conflicting with another peripheral.
10.4.2.1
Peripheral Pin Select Function
Priority
Pin-selectable peripheral outputs (for example, OC and
UART transmit) take priority over any general purpose
digital functions permanently tied to that pin, such as
PMP and port I/O. Specialized digital outputs, such as
USB functionality, take priority over PPS outputs on the
same pin. The pin diagrams at the beginning of this
data sheet list peripheral outputs in order of priority.
Refer to them for priority concerns on a particular pin.
Unlike devices with fixed peripherals, pin-selectable
peripheral inputs never take ownership of a pin. The
pin’s output buffer is controlled by the pin’s TRIS bit
setting, or by a fixed peripheral on the pin. If the pin is
configured in Digital mode, then the PPS input will
operate correctly, reading the input. If an analog function is enabled on the same pin, the pin-selectable
input will be disabled.
DS39940D-page 129
PIC24FJ64GB004 FAMILY
10.4.3
CONTROLLING PERIPHERAL PIN
SELECT
Peripheral Pin Select features are controlled through
two sets of Special Function Registers: one to map
peripheral inputs and one to map outputs. Because
they are separately controlled, a particular peripheral’s
input and output (if the peripheral has both) can be
placed on any selectable function pin without
constraint.
The
association
of
a
peripheral
to
a
peripheral-selectable pin is handled in two different
ways, depending on if an input or an output is being
mapped.
TABLE 10-2:
10.4.3.1
Input Mapping
The inputs of the Peripheral Pin Select options are
mapped on the basis of the peripheral; that is, a control
register associated with a peripheral dictates the pin it
will be mapped to. The RPINRx registers are used to
configure peripheral input mapping (see Register 10-1
through Register 10-14). Each register contains up to
two sets of 5-bit fields, with each set associated with
one of the pin-selectable peripherals. Programming a
given peripheral’s bit field with an appropriate 6-bit
value maps the RPn pin with that value to that
peripheral. For any given device, the valid range of
values for any of the bit fields corresponds to the
maximum number of Peripheral Pin Select options
supported by the device.
SELECTABLE INPUT SOURCES (MAPS INPUT TO FUNCTION)(1)
Function Name
Register
Function Mapping
Bits
External Interrupt 1
INT1
RPINR0
INT1R
External Interrupt 2
INT2
RPINR1
INT2R
Input Capture 1
IC1
RPINR7
IC1R
Input Capture 2
IC2
RPINR7
IC2R
Input Capture 3
IC3
RPINR8
IC3R
Input Capture 4
IC4
RPINR8
IC4R
Input Name
Input Capture 5
Output Compare Fault A
Output Compare Fault B
SPI1 Clock Input
SPI1 Data Input
IC5
RPINR9
IC5R
OCFA
RPINR11
OCFAR
OCFB
RPINR11
OCFBR
SCK1IN
RPINR20
SCK1R
SDI1
RPINR20
SDI1R
SS1IN
RPINR21
SS1R
SPI2 Clock Input
SCK2IN
RPINR22
SCK2R
SPI2 Data Input
SDI2
RPINR22
SDI2R
SPI2 Slave Select Input
SS2IN
RPINR23
SS2R
Timer2 External Clock
T2CK
RPINR3
T2CKR
Timer3 External Clock
T3CK
RPINR3
T3CKR
Timer4 External Clock
T4CK
RPINR4
T4CKR
Timer5 External Clock
T5CK
RPINR4
T5CKR
UART1 Clear To Send
U1CTS
RPINR18
U1CTSR
U1RX
RPINR18
U1RXR
U2CTS
RPINR19
U2CTSR
U2RX
RPINR19
U2RXR
SPI1 Slave Select Input
UART1 Receive
UART2 Clear To Send
UART2 Receive
Note 1:
Unless otherwise noted, all inputs use the Schmitt Trigger input buffers.
DS39940D-page 130
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
10.4.3.2
Output Mapping
the bit field corresponds to one of the peripherals and
that peripheral’s output is mapped to the pin (see
Table 10-3).
In contrast to inputs, the outputs of the Peripheral Pin
Select options are mapped on the basis of the pin. In
this case, a control register associated with a particular
pin dictates the peripheral output to be mapped. The
RPORx registers are used to control output mapping.
Each register contains up to two 5-bit fields, with each
field being associated with one RPn pin (see
Register 10-15 through Register 10-27). The value of
TABLE 10-3:
Because of the mapping technique, the list of
peripherals for output mapping also includes a null value
of ‘000000’. This permits any given pin to remain disconnected from the output of any of the pin-selectable
peripherals.
SELECTABLE OUTPUT SOURCES (MAPS FUNCTION TO OUTPUT)
Output Function Number(1)
Function
0
NULL(2)
Null
1
C1OUT
Comparator 1 Output
2
C2OUT
Comparator 2 Output
3
U1TX
UART1 Transmit
4
Note 1:
2:
3:
U1RTS
(3)
Output Name
UART1 Request To Send
5
U2TX
UART2 Transmit
6
U2RTS(3)
UART2 Request To Send
7
SDO1
SPI1 Data Output
8
SCK1OUT
SPI1 Clock Output
9
SS1OUT
SPI1 Slave Select Output
10
SDO2
SPI2 Data Output
11
SCK2OUT
SPI2 Clock Output
12
SS2OUT
SPI2 Slave Select Output
18
OC1
Output Compare 1
19
OC2
Output Compare 2
20
OC3
Output Compare 3
21
OC4
Output Compare 4
22
OC5
Output Compare 5
23-28
(unused)
NC
29
CTPLS
CTMU Output Pulse
30
C3OUT
Comparator 3 Output
31
(unused)
NC
Setting the RPORx register with the listed value assigns that output function to the associated RPn pin.
The NULL function is assigned to all RPn outputs at device Reset and disables the RPn output function.
IrDA® BCLK functionality uses this output.
2010 Microchip Technology Inc.
DS39940D-page 131
PIC24FJ64GB004 FAMILY
10.4.3.3
Mapping Limitations
10.4.4.1
The control schema of the Peripheral Pin Select is
extremely flexible. Other than systematic blocks that
prevent signal contention caused by two physical pins
being configured as the same functional input, or two
functional outputs configured as the same pin, there
are no hardware enforced lock outs. The flexibility
extends to the point of allowing a single input to drive
multiple peripherals or a single functional output to
drive multiple output pins.
10.4.3.4
PPS Mapping Exceptions for
PIC24FJ64GB0 Family Devices
Although the PPS registers allow for up to 32 remappable
pins, not all of these are implemented in all devices.
Exceptions and unimplemented RPn pins are listed in
Table 10-4.
TABLE 10-4:
REMAPPABLE PIN
EXCEPTIONS FOR
PIC24FJ64GB004 FAMILY
DEVICES
RP Pins (I/O)
Device Pin
Count
Total
Unimplemented
28 Pins
15
RP12, RP16-RP25
44 Pins
25
RP12
10.4.4
CONTROLLING CONFIGURATION
CHANGES
Because peripheral remapping can be changed during
run time, some restrictions on peripheral remapping
are needed to prevent accidental configuration
changes. PIC24F devices include three features to
prevent alterations to the peripheral map:
• Control register lock sequence
• Continuous state monitoring
• Configuration bit remapping lock
Control Register Lock
Under normal operation, writes to the RPINRx and
RPORx registers are not allowed. Attempted writes will
appear to execute normally, but the contents of the
registers will remain unchanged. To change these registers, they must be unlocked in hardware. The register
lock is controlled by the IOLOCK bit (OSCCON).
Setting IOLOCK prevents writes to the control
registers; clearing IOLOCK allows writes.
To set or clear IOLOCK, a specific command sequence
must be executed:
1.
2.
3.
Write 46h to OSCCON.
Write 57h to OSCCON.
Clear (or set) IOLOCK as a single operation.
Unlike the similar sequence with the oscillator’s LOCK
bit, IOLOCK remains in one state until changed. This
allows all of the Peripheral Pin Selects to be configured
with a single unlock sequence, followed by an update
to all control registers, then locked with a second lock
sequence.
10.4.4.2
Continuous State Monitoring
In addition to being protected from direct writes, the
contents of the RPINRx and RPORx registers are
constantly monitored in hardware by shadow registers.
If an unexpected change in any of the registers occurs
(such as cell disturbances caused by ESD or other
external events), a Configuration Mismatch Reset will
be triggered.
10.4.4.3
Configuration Bit Pin Select Lock
As an additional level of safety, the device can be
configured to prevent more than one write session to
the RPINRx and RPORx registers. The IOL1WAY
(CW2) Configuration bit blocks the IOLOCK bit
from being cleared after it has been set once. If
IOLOCK remains set, the register unlock procedure will
not execute and the Peripheral Pin Select Control
registers cannot be written to. The only way to clear the
bit and re-enable peripheral remapping is to perform a
device Reset.
In the default (unprogrammed) state, IOL1WAY is set,
restricting users to one write session. Programming
IOL1WAY allows users unlimited access (with the
proper use of the unlock sequence) to the Peripheral
Pin Select registers.
DS39940D-page 132
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
10.4.5
CONSIDERATIONS FOR
PERIPHERAL PIN SELECTION
The ability to control Peripheral Pin Selection introduces several considerations into application design
that could be overlooked. This is particularly true for
several common peripherals that are available only as
remappable peripherals.
The main consideration is that the Peripheral Pin
Selects are not available on default pins in the device’s
default (Reset) state. Since all RPINRx registers reset
to ‘11111’ and all RPORx registers reset to ‘00000’, all
Peripheral Pin Select inputs are tied to VSS and all
Peripheral Pin Select outputs are disconnected.
Note:
RP31 does not have to exist on a device
for the registers to be reset to it, or for
peripheral pin outputs to be tied to it.
This situation requires the user to initialize the device
with the proper peripheral configuration before any
other application code is executed. Since the IOLOCK
bit resets in the unlocked state, it is not necessary to
execute the unlock sequence after the device has
come out of Reset. For application safety, however, it is
best to set IOLOCK and lock the configuration after
writing to the control registers.
Because the unlock sequence is timing-critical, it must
be executed as an assembly language routine in the
same manner as changes to the oscillator configuration. If the bulk of the application is written in C or
another high-level language, the unlock sequence
should be performed by writing in-line assembly.
The assignment of a peripheral to a particular pin does
not automatically perform any other configuration of the
pin’s I/O circuitry. In theory, this means adding a
pin-selectable output to a pin may mean inadvertently
driving an existing peripheral input when the output is
driven. Users must be familiar with the behavior of
other fixed peripherals that share a remappable pin and
know when to enable or disable them. To be safe, fixed
digital peripherals that share the same pin should be
disabled when not in use.
Along these lines, configuring a remappable pin for a
specific peripheral does not automatically turn that
feature on. The peripheral must be specifically
configured for operation and enabled, as if it were tied to
a fixed pin. Where this happens in the application code
(immediately following device Reset and peripheral
configuration or inside the main application routine)
depends on the peripheral and its use in the application.
A final consideration is that Peripheral Pin Select functions neither override analog inputs, nor reconfigure
pins with analog functions for digital I/O. If a pin is
configured as an analog input on device Reset, it must
be explicitly reconfigured as digital I/O when used with
a Peripheral Pin Select.
Example 10-2 shows a configuration for bidirectional
communication with flow control using UART1. The
following input and output functions are used:
• Input Functions: U1RX, U1CTS
• Output Functions: U1TX, U1RTS
Choosing the configuration requires the review of all
Peripheral Pin Selects and their pin assignments,
especially those that will not be used in the application.
In all cases, unused pin-selectable peripherals should
be disabled completely. Unused peripherals should
have their inputs assigned to an unused RPn pin
function. I/O pins with unused RPn functions should be
configured with the null peripheral output.
2010 Microchip Technology Inc.
DS39940D-page 133
PIC24FJ64GB004 FAMILY
EXAMPLE 10-2:
;unlock
push
push
push
mov
mov
mov
mov.b
mov.b
bclr
CONFIGURING UART1 INPUT AND OUTPUT FUNCTIONS IN ASSEMBLY CODE
registers
w1;
w2;
w3;
#OSCCON, w1;
#0x46, w2;
#0x57, w3;
w2, [w1];
w3, [w1];
OSCCON, #6;
; Configure Input Functions (Table10-2)
; Assign U1CTS To Pin RP1, U1RX To Pin RP0
mov
#0x0100, w1;
mov
w1,RPINR18;
; Configure Output Functions (Table 10-3)
; Assign U1RTS To Pin RP3, U1TX To Pin RP2
mov
#0x0403, w1;
mov
w1, RPOR1;
;lock
mov
mov
mov
mov.b
mov.b
bset
pop
pop
pop
registers
#OSCCON, w1;
#0x46, w2;
#0x57, w3;
w2, [w1];
w3, [w1];
OSCCON, #6;
w3;
w2;
w1;
EXAMPLE 10-3:
CONFIGURING UART1 INPUT AND OUTPUT FUNCTIONS IN ‘C’
//unlock registers
__builtin_write_OSCCONL(OSCCON & 0xBF);
// Configure Input Functions (Table 9-1)
// Assign U1RX To Pin RP0
RPINR18bits.U1RXR = 0;
// Assign U1CTS To Pin RP1
RPINR18bits.U1CTSR = 1;
// Configure Output Functions (Table 9-2)
// Assign U1TX To Pin RP2
RPOR1bits.RP2R = 3;
// Assign U1RTS To Pin RP3
RPOR1bits.RP3R = 4;
//lock registers
__builtin_write_OSCCONL(OSCCON | 0x40);
DS39940D-page 134
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
10.4.6
PERIPHERAL PIN SELECT
REGISTERS
Note:
The PIC24FJ64GB004 family of devices implements a
total of 27 registers for remappable peripheral
configuration:
• Input Remappable Peripheral Registers (14)
• Output Remappable Peripheral Registers (13)
REGISTER 10-1:
Input and output register values can only be
changed if IOLOCK (OSCCON) = 0.
See Section 10.4.4.1 “Control Register
Lock” for a specific command sequence.
RPINR0: PERIPHERAL PIN SELECT INPUT REGISTER 0
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
INT1R4
INT1R3
INT1R2
INT1R1
INT1R0
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
Unimplemented: Read as ‘0’
bit 12-8
INT1R: Assign External Interrupt 1 (INT1) to Corresponding RPn or RPIn Pin bits
bit 7-0
Unimplemented: Read as ‘0’
REGISTER 10-2:
RPINR1: PERIPHERAL PIN SELECT INPUT REGISTER 1
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
INT2R4
INT2R3
INT2R2
INT2R1
INT2R0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-5
Unimplemented: Read as ‘0’
bit 4-0
INT1R: Assign External Interrupt 2 (INT2) to Corresponding RPn or RPIn Pin bits
2010 Microchip Technology Inc.
DS39940D-page 135
PIC24FJ64GB004 FAMILY
REGISTER 10-3:
RPINR3: PERIPHERAL PIN SELECT INPUT REGISTER 3
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
T3CKR4
T3CKR3
T3CKR2
T3CKR1
T3CKR0
bit 15
bit 8
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
T2CKR4
T2CKR3
T2CKR2
T2CKR1
T2CKR0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
Unimplemented: Read as ‘0’
bit 12-8
T3CKR: Assign Timer3 External Clock (T3CK) to Corresponding RPn or RPIn Pin bits
bit 7-5
Unimplemented: Read as ‘0’
bit 4-0
T2CKR: Assign Timer2 External Clock (T2CK) to Corresponding RPn or RPIn Pin bits
REGISTER 10-4:
RPINR4: PERIPHERAL PIN SELECT INPUT REGISTER 4
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
T5CKR4
T5CKR3
T5CKR2
T5CKR1
T5CKR0
bit 15
bit 8
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
T4CKR4
T4CKR3
T4CKR2
T4CKR1
T4CKR0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
Unimplemented: Read as ‘0’
bit 12-8
T5CKR: Assign Timer5 External Clock (T5CK) to Corresponding RPn or RPIn Pin bits
bit 7-5
Unimplemented: Read as ‘0’
bit 4-0
T4CKR: Assign Timer4 External Clock (T4CK) to Corresponding RPn or RPIn Pin bits
DS39940D-page 136
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 10-5:
RPINR7: PERIPHERAL PIN SELECT INPUT REGISTER 7
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
IC2R4
IC2R3
IC2R2
IC2R1
IC2R0
bit 15
bit 8
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
IC1R4
IC1R3
IC1R2
IC1R1
IC1R0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
Unimplemented: Read as ‘0’
bit 12-8
IC2R: Assign Input Capture 2 (IC2) to Corresponding RPn or RPIn Pin bits
bit 7-5
Unimplemented: Read as ‘0’
bit 4-0
IC1R: Assign Input Capture 1 (IC1) to Corresponding RPn or RPIn Pin bits
REGISTER 10-6:
RPINR8: PERIPHERAL PIN SELECT INPUT REGISTER 8
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
IC4R4
IC4R3
IC4R2
IC4R1
IC4R0
bit 15
bit 8
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
IC3R4
IC3R3
IC3R2
IC3R1
IC3R0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
Unimplemented: Read as ‘0’
bit 12-8
IC4R: Assign Input Capture 4 (IC4) to Corresponding RPn or RPIn Pin bits
bit 7-5
Unimplemented: Read as ‘0’
bit 4-0
IC3R: Assign Input Capture 3 (IC3) to Corresponding RPn or RPIn Pin bits
2010 Microchip Technology Inc.
DS39940D-page 137
PIC24FJ64GB004 FAMILY
REGISTER 10-7:
RPINR9: PERIPHERAL PIN SELECT INPUT REGISTER 9
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
IC5R4
IC5R3
IC5R2
IC5R1
IC5R0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-5
Unimplemented: Read as ‘0’
bit 4-0
IC5R: Assign Input Capture 5 (IC5) to Corresponding RPn or RPIn Pin bits
REGISTER 10-8:
RPINR11: PERIPHERAL PIN SELECT INPUT REGISTER 11
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
OCFBR4
OCFBR3
OCFBR2
OCFBR1
OCFBR0
bit 15
bit 8
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
OCFAR4
OCFAR3
OCFAR2
OCFAR1
OCFAR0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
Unimplemented: Read as ‘0’
bit 12-8
OCFBR: Assign Output Compare Fault B (OCFB) to Corresponding RPn or RPIn Pin bits
bit 7-5
Unimplemented: Read as ‘0’
bit 4-0
OCFAR: Assign Output Compare Fault A (OCFA) to Corresponding RPn or RPIn Pin bits
DS39940D-page 138
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 10-9:
RPINR18: PERIPHERAL PIN SELECT INPUT REGISTER 18
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
U1CTSR4
U1CTSR3
U1CTSR2
U1CTSR1
U1CTSR0
bit 15
bit 8
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
U1RXR4
U1RXR3
U1RXR2
U1RXR1
U1RXR0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
Unimplemented: Read as ‘0’
bit 12-8
U1CTSR: Assign UART1 Clear to Send (U1CTS) to Corresponding RPn or RPIn Pin bits
bit 7-5
Unimplemented: Read as ‘0’
bit 4-0
U1RXR: Assign UART1 Receive (U1RX) to Corresponding RPn or RPIn Pin bits
REGISTER 10-10: RPINR19: PERIPHERAL PIN SELECT INPUT REGISTER 19
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
U2CTSR4
U2CTSR3
U2CTSR2
U2CTSR1
U2CTSR0
bit 15
bit 8
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
U2RXR4
U2RXR3
U2RXR2
U2RXR1
U2RXR0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
Unimplemented: Read as ‘0’
bit 12-8
U2CTSR: Assign UART2 Clear to Send (U2CTS) to Corresponding RPn or RPIn Pin bits
bit 7-5
Unimplemented: Read as ‘0’
bit 4-0
U2RXR: Assign UART2 Receive (U2RX) to Corresponding RPn or RPIn Pin bits
2010 Microchip Technology Inc.
DS39940D-page 139
PIC24FJ64GB004 FAMILY
REGISTER 10-11: RPINR20: PERIPHERAL PIN SELECT INPUT REGISTER 20
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
SCK1R4
SCK1R3
SCK1R2
SCK1R1
SCK1R0
bit 15
bit 8
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
SDI1R4
SDI1R3
SDI1R2
SDI1R1
SDI1R0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
Unimplemented: Read as ‘0’
bit 12-8
SCK1R: Assign SPI1 Clock Input (SCK1IN) to Corresponding RPn or RPIn Pin bits
bit 7-5
Unimplemented: Read as ‘0’
bit 4-0
SDI1R: Assign SPI1 Data Input (SDI1) to Corresponding RPn or RPIn Pin bits
REGISTER 10-12: RPINR21: PERIPHERAL PIN SELECT INPUT REGISTER 21
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
SS1R4
SS1R3
SS1R2
SS1R1
SS1R0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-5
Unimplemented: Read as ‘0’
bit 4-0
SS1R: Assign SPI1 Slave Select Input (SS1IN) to Corresponding RPn or RPIn Pin bits
DS39940D-page 140
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 10-13: RPINR22: PERIPHERAL PIN SELECT INPUT REGISTER 22
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
SCK2R4
SCK2R3
SCK2R2
SCK2R1
SCK2R0
bit 15
bit 8
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
SDI2R4
SDI2R3
SDI2R2
SDI2R1
SDI2R0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
Unimplemented: Read as ‘0’
bit 12-8
SCK2R: Assign SPI2 Clock Input (SCK2IN) to Corresponding RPn or RPIn Pin bits
bit 7-5
Unimplemented: Read as ‘0’
bit 4-0
SDI2R: Assign SPI2 Data Input (SDI2) to Corresponding RPn or RPIn Pin bits
REGISTER 10-14: RPINR23: PERIPHERAL PIN SELECT INPUT REGISTER 23
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 15
bit 8
U-0
U-0
U-0
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
—
—
—
SS2R4
SS2R3
SS2R2
SS2R1
SS2R0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-5
Unimplemented: Read as ‘0’
bit 4-0
SS2R: Assign SPI2 Slave Select Input (SS2IN) to Corresponding RPn or RPIn Pin bits
2010 Microchip Technology Inc.
DS39940D-page 141
PIC24FJ64GB004 FAMILY
REGISTER 10-15: RPOR1: PERIPHERAL PIN SELECT OUTPUT REGISTER 1
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
—
—
RP3R4
RP3R3
RP3R2
RP3R1
RP3R0
bit 15
bit 8
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
—
—
RP2R4
RP2R3
RP2R2
RP2R1
RP2R0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
Unimplemented: Read as ‘0’
bit 12-8
RP3R: RP3 Output Pin Mapping bits
Peripheral output number n is assigned to pin, RP3 (see Table 10-3 for peripheral function numbers).
bit 7-5
Unimplemented: Read as ‘0’
bit 4-0
RP2R: RP2 Output Pin Mapping bits
Peripheral output number n is assigned to pin, RP2 (see Table 10-3 for peripheral function numbers).
REGISTER 10-16: RPOR1: PERIPHERAL PIN SELECT OUTPUT REGISTER 1
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
—
—
RP1R4
RP1R3
RP1R2
RP1R1
RP1R0
bit 15
bit 8
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
—
—
RP0R4
RP0R3
RP0R2
RP0R1
RP0R0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
Unimplemented: Read as ‘0’
bit 12-8
RP1R 7
or 16 when PLEN 7.
bit 7
CRCFUL: FIFO Full bit
1 = FIFO is full
0 = FIFO is not full
bit 6
CRCMPT: FIFO Empty Bit
1 = FIFO is empty
0 = FIFO is not empty
bit 5
CRCISEL: CRC interrupt Selection bit
1 = Interrupt on FIFO is empty; CRC calculation is not complete
0 = Interrupt on shift is complete and CRCWDAT result is ready
bit 4
CRCGO: Start CRC bit
1 = Start CRC serial shifter
0 = CRC serial shifter is turned off
bit 3
LENDIAN: Data Shift Direction Select bit
1 = Data word is shifted into the CRC starting with the LSb (little endian)
0 = Data word is shifted into the CRC starting with the MSb (big endian)
bit 2-0
Unimplemented: Read as ‘0’
DS39940D-page 256
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 21-2:
CRCCON2: CRC CONTROL REGISTER 2
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
—
—
DWIDTH4
DWIDTH3
DWIDTH2
DWIDTH1
DWIDTH0
bit 15
bit 8
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
—
—
PLEN4
PLEN3
PLEN2
PLEN1
PLEN0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
Unimplemented: Read as ‘0’
bit 12-8
DWIDTH: Data Width Select bits
Defines the width of the data word (Data Word Width = (DWIDTH) + 1).
bit 7-5
Unimplemented: Read as ‘0’
bit 4-0
PLEN: Polynomial Length Select bits
Defines the length of the CRC polynomial (Polynomial Length = (PLEN) + 1).
REGISTER 21-3:
CRCXORL: CRC XOR POLYNOMIAL REGISTER, LOW BYTE
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
X15
X14
X13
X12
X11
X10
X9
X8
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
U-0
X7
X6
X5
X4
X3
X2
X1
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-1
X: XOR of Polynomial Term Xn Enable bits
bit 0
Unimplemented: Read as ‘0’
2010 Microchip Technology Inc.
x = Bit is unknown
DS39940D-page 257
PIC24FJ64GB004 FAMILY
REGISTER 21-4:
CRCXORH: CRC XOR POLYNOMIAL REGISTER, HIGH BYTE
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
X31
X30
X29
X28
X27
X26
X25
X24
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
X23
X22
X21
X20
X19
X18
X17
X16
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-0
x = Bit is unknown
X: XOR of Polynomial Term Xn Enable bits
DS39940D-page 258
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
22.0
Note:
10-BIT HIGH-SPEED A/D
CONVERTER
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
“PIC24F Family Reference Manual”,
Section 17. “10-Bit A/D Converter”
(DS39705).
A block diagram of the A/D Converter is shown in
Figure 22-1.
To perform an A/D conversion:
1.
The 10-bit A/D Converter has the following key
features:
•
•
•
•
•
•
•
•
•
•
•
Successive Approximation (SAR) conversion
Conversion speeds of up to 500 ksps
13 analog input pins
External voltage reference input pins
Internal band gap reference inputs
Automatic Channel Scan mode
Selectable conversion trigger source
16-word conversion result buffer
Selectable Buffer Fill modes
Four result alignment options
Operation during CPU Sleep and Idle modes
2.
Configure the A/D module:
a) Configure port pins as analog inputs and/or
select band gap reference inputs
(AD1PCFGL and AD1PCFGH).
b) Select voltage reference source to match
expected range on analog inputs
(AD1CON2).
c) Select the analog conversion clock to match
the desired data rate with the processor
clock (AD1CON3).
d) Select the appropriate sample/conversion
sequence
(AD1CON1
and
AD1CON3).
e) Select how conversion results are
presented in the buffer (AD1CON1).
f) Select interrupt rate (AD1CON2).
g) Turn on A/D module (AD1CON1).
Configure the A/D interrupt (if required):
a) Clear the AD1IF bit.
b) Select A/D interrupt priority.
On all PIC24FJ64GB004 family devices, the 10-bit A/D
Converter has 13 analog input pins, designated AN0
through AN12. In addition, there are two analog input
pins for external voltage reference connections (VREF+
and VREF-). These voltage reference inputs may be
shared with other analog input pins.
2010 Microchip Technology Inc.
DS39940D-page 259
PIC24FJ64GB004 FAMILY
FIGURE 22-1:
10-BIT HIGH-SPEED A/D CONVERTER BLOCK DIAGRAM
Internal Data Bus
AVSS
VREF+
VR Select
AVDD
VR+
16
VR-
VREF-
Comparator
VINH
AN0
VINL
VRS/H
VR+
DAC
AN1
AN2
AN5
MUX A
AN4
10-Bit SAR
VINH
AN3
Conversion Logic
Data Formatting
AN6
ADC1BUF0:
ADC1BUFF
VINL
AN7
AN8
AD1CON1
AN9
AD1CON2
AD1CON3
AD1CHS0
AN10
AN12
VDDCORE
VBG/2
MUX B
AN11
VINH
AD1PCFGL
AD1PCFGH
AD1CSSL
AD1CSSH
VINL
VBG
Sample Control
Control Logic
Conversion Control
Input MUX Control
Pin Config Control
DS39940D-page 260
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 22-1:
AD1CON1: A/D CONTROL REGISTER 1
R/W-0
U-0
R/W-0
U-0
U-0
U-0
R/W-0
R/W-0
ADON(1)
—
ADSIDL
—
—
—
FORM1
FORM0
bit 15
bit 8
R/W-0
R/W-0
R/W-0
U-0
U-0
R/W-0
R/W-0, HCS
R/C-0, HCS
SSRC2
SSRC1
SSRC0
—
—
ASAM
SAMP
DONE
bit 7
bit 0
Legend:
C = Clearable bit
HCS = Hardware Clearable/Settable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
ADON: A/D Operating Mode bit(1)
1 = A/D Converter module is operating
0 = A/D Converter is off
bit 14
Unimplemented: Read as ‘0’
bit 13
ADSIDL: Stop in Idle Mode bit
1 = Discontinue module operation when device enters Idle mode
0 = Continue module operation in Idle mode
bit 12-10
Unimplemented: Read as ‘0’
bit 9-8
FORM: Data Output Format bits
11 = Signed fractional (sddd dddd dd00 0000)
10 = Fractional (dddd dddd dd00 0000)
01 = Signed integer (ssss sssd dddd dddd)
00 = Integer (0000 00dd dddd dddd)
bit 7-5
SSRC: Conversion Trigger Source Select bits
111 = Internal counter ends sampling and starts conversion (auto-convert)
110 = CTMU event ends sampling and starts conversion
101 = Reserved
100 = Timer5 compare ends sampling and starts conversion
011 = Reserved
010 = Timer3 compare ends sampling and starts conversion
001 = Active transition on INT0 pin ends sampling and starts conversion
000 = Clearing the SAMP bit ends sampling and starts conversion
bit 4-3
Unimplemented: Read as ‘0’
bit 2
ASAM: A/D Sample Auto-Start bit
1 = Sampling begins immediately after the last conversion completes; SAMP bit is auto-set
0 = Sampling begins when the SAMP bit is set
bit 1
SAMP: A/D Sample Enable bit
1 = A/D sample/hold amplifier is sampling input
0 = A/D sample/hold amplifier is holding
bit 0
DONE: A/D Conversion Status bit
1 = A/D conversion is done
0 = A/D conversion is NOT done
Note 1:
Values of ADC1BUFx registers will not retain their values once the ADON bit is cleared. Read out the
conversion values from the buffer before disabling the module.
2010 Microchip Technology Inc.
DS39940D-page 261
PIC24FJ64GB004 FAMILY
REGISTER 22-2:
AD1CON2: A/D CONTROL REGISTER 2
R/W-0
R/W-0
R/W-0
r-0
U-0
R/W-0
U-0
U-0
VCFG2
VCFG1
VCFG0
r
—
CSCNA
—
—
bit 15
bit 8
R-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
BUFS
—
SMPI3
SMPI2
SMPI1
SMPI0
BUFM
ALTS
bit 7
bit 0
Legend:
r = Reserved bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-13
x = Bit is unknown
VCFG: Voltage Reference Configuration bits
VCFG
VR+
VR-
000
AVDD
AVSS
001
External VREF+ pin
AVSS
010
AVDD
External VREF- pin
011
External VREF+ pin
External VREF- pin
1xx
AVDD
AVSS
bit 12
Reserved: Maintain as ‘0’
bit 11
Unimplemented: Read as ‘0’
bit 10
CSCNA: Scan Input Selections for CH0+ S/H Input for MUX A Input Multiplexer Setting bit
1 = Scan inputs
0 = Do not scan inputs
bit 9-8
Unimplemented: Read as ‘0’
bit 7
BUFS: Buffer Fill Status bit (valid only when BUFM = 1)
1 = A/D is currently filling buffer 08-0F; user should access data in 00-07
0 = A/D is currently filling buffer 00-07; user should access data in 08-0F
bit 6
Unimplemented: Read as ‘0’
bit 5-2
SMPI: Sample/Convert Sequences Per Interrupt Selection bits
1111 = Interrupts are at the completion of conversion for each 16th sample/convert sequence
1110 = Interrupts are at the completion of conversion for each 15th sample/convert sequence
.....
0001 = Interrupts are at the completion of conversion for each 2nd sample/convert sequence
0000 = Interrupts are at the completion of conversion for each sample/convert sequence
bit 1
BUFM: Buffer Mode Select bit
1 = Buffer is configured as two 8-word buffers (ADC1BUFn and ADC1BUFn)
0 = Buffer is configured as one 16-word buffer (ADC1BUFn)
bit 0
ALTS: Alternate Input Sample Mode Select bit
1 = Uses MUX A input multiplexer settings for first sample, then alternates between MUX B and
MUX A input multiplexer settings for all subsequent samples
0 = Always uses MUX A input multiplexer settings
DS39940D-page 262
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 22-3:
AD1CON3: A/D CONTROL REGISTER 3
R/W-0
r-0
r-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
ADRC
r
r
SAMC4
SAMC3
SAMC2
SAMC1
SAMC0
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
ADCS7
ADCS6
ADCS5
ADCS4
ADCS3
ADCS2
ADCS1
ADCS0
bit 7
bit 0
Legend:
r = Reserved bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
ADRC: A/D Conversion Clock Source bit
1 = A/D internal RC clock
0 = Clock derived from system clock
bit 14-13
Reserved: Maintain as ‘0’
bit 12-8
SAMC: Auto-Sample Time bits
11111 = 31 TAD
·····
00001 = 1 TAD
00000 = 0 TAD (not recommended)
bit 7-0
ADCS: A/D Conversion Clock Select bits
11111111 to 01000000 = Reserved
······
00111111 = 64 • TCY
······
00000001 = 2 • TCY
00000000 = TCY
2010 Microchip Technology Inc.
x = Bit is unknown
DS39940D-page 263
PIC24FJ64GB004 FAMILY
REGISTER 22-4:
AD1CHS: A/D INPUT SELECT REGISTER
R/W-0
U-0
U-0
CH0NB
—
—
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
CH0SB4(1,2) CH0SB3(1,2) CH0SB2(1,2) CH0SB1(1,2) CH0SB0(1,2)
bit 15
bit 8
R/W-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
CH0NA
—
—
CH0SA4
CH0SA3
CH0SA2
CH0SA1
CH0SA0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
CH0NB: Channel 0 Negative Input Select for MUX B Multiplexer Setting bit
1 = Channel 0 negative input is AN1
0 = Channel 0 negative input is VR-
bit 14-13
Unimplemented: Read as ‘0’
bit 12-8
CH0SB: Channel 0 Positive Input Select for MUX B Multiplexer Setting bits(1,2)
11111 = Channel 0 positive input is reserved for CTMU use only(3)
1xxxx = Unimplemented; do not use.
01111 = Channel 0 positive input is internal band gap reference (VBG)
01110 = Channel 0 positive input is VBG/2
01101 = Channel 0 positive input is voltage regulator output (VDDCORE)
01100 = Channel 0 positive input is AN12
01011 = Channel 0 positive input is AN11
01010 = Channel 0 positive input is AN10
01001 = Channel 0 positive input is AN9
01000 = Channel 0 positive input is AN8
00111 = Channel 0 positive input is AN7
00110 = Channel 0 positive input is AN6
00101 = Channel 0 positive input is AN5
00100 = Channel 0 positive input is AN4
00011 = Channel 0 positive input is AN3
00010 = Channel 0 positive input is AN2
00001 = Channel 0 positive input is AN1
00000 = Channel 0 positive input is AN0
bit 7
CH0NA: Channel 0 Negative Input Select for MUX A Multiplexer Setting bit
1 = Channel 0 negative input is AN1
0 = Channel 0 negative input is VR-
bit 6-5
Unimplemented: Read as ‘0’
bit 4-0
CH0SA: Channel 0 Positive Input Select for MUX A Multiplexer Setting bits
Implemented combinations are identical to those for CH0SB (above).
Note 1:
2:
3:
Combinations not shown here are unimplemented; do not use.
Analog channels, AN6, AN7, AN8 and AN12, are unavailable on 28-pin devices; do not use.
Selecting this internal channel allows the CTMU module to utilize the A/D Converter sample and hold
capacitor (CAD) for the smallest time measurements.
DS39940D-page 264
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 22-5:
AD1PCFG: A/D PORT CONFIGURATION REGISTER
R/W-0
R/W-0
R/W-0
R/W-0(1)
R/W-0
R/W-0
R/W-0
R/W-0(1)
PCFG15
PCFG14
PCFG13
PCFG12
PCFG11
PCFG10
PCFG9
PCFG8
bit 15
bit 8
R/W-0(1)
R/W-0(1)
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
PCFG7
PCFG6
PCFG5
PCFG4
PCFG3
PCFG2
PCFG1
PCFG0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
PCFG15: A/D Input Band Gap Reference Enable bit
1 = Internal band gap (VBG) reference channel is disabled
0 = Internal band gap reference channel is enabled
bit 14
PCFG14: A/D Input Half Band Gap Reference Enable bit
1 = Internal half band gap (VBG/2) reference channel is disabled
0 = Internal half band gap reference channel is enabled
bit 13
PCFG13: A/D Input Voltage Regulator Output Reference Enable bit
1 = Internal voltage regulator output (VDDCORE) reference channel is disabled
0 = Internal voltage regulator output reference channel is enabled
bit 12-0
PCFG: Analog Input Pin Configuration Control bits(1)
1 = Pin for corresponding analog channel is configured in Digital mode; I/O port read is enabled
0 = Pin is configured in Analog mode; I/O port read is disabled, A/D samples pin voltage
Note 1:
Analog channels, AN6, AN7, AN8 and AN12, are unavailable on 28-pin devices; leave these corresponding
bits set.
2010 Microchip Technology Inc.
DS39940D-page 265
PIC24FJ64GB004 FAMILY
REGISTER 22-6:
AD1CSSL: A/D INPUT SCAN SELECT REGISTER
R/W-0
R/W-0
R/W-0
R/W-0(1)
R/W-0
R/W-0
R/W-0
R/W-0
CSSL15
CSSL14
CSSL13
CSSL12
CSSL11
CSSL10
CSSL9
CSSL8(1)
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
CSSL7
CSSL6
CSSL5
CSSL4
CSSL3
CSSL2
CSSL1
CSSL0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
CSSL15: A/D Input Band Gap Scan Enable bit
1 = Internal band gap (VBG) channel is enabled for input scan
0 = Analog channel is disabled from input scan
bit 14
CSSL14: A/D Input Half Band Gap Scan Enable bit
1 = Internal half band gap (VBG/2) channel is enabled for input scan
0 = Analog channel is disabled from input scan
bit 13
CSSL13: A/D Input Voltage Regulator Output Scan Enable bit
1 = Internal voltage regulator output (VDDCORE) is enabled for input scan
0 = Analog channel is disabled from input scan
bit 12-0
CSSL: A/D Input Pin Scan Selection bits(1)
1 = Corresponding analog channel is selected for input scan
0 = Analog channel is omitted from input scan
Note 1:
Analog channels, AN6, AN7, AN8 and AN12, are unavailable on 28-pin devices; leave these corresponding
bits cleared.
DS39940D-page 266
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
A/D CONVERSION CLOCK PERIOD(1)
EQUATION 22-1:
ADCS =
TAD
–1
TCY
TAD = TCY • (ADCS + 1)
Note 1:
FIGURE 22-2:
Based on TCY = 2 * TOSC, Doze mode and PLL are disabled.
10-BIT A/D CONVERTER ANALOG INPUT MODEL
VDD
Rs
VA
RIC 250
VT = 0.6V
ANx
CPIN
6-11 pF
(Typical)
VT = 0.6V
Sampling
Switch
RSS 5 k(Typical)
RSS
ILEAKAGE
500 nA
CHOLD
= ADC capacitance
= 4.4 pF (Typical)
VSS
Legend: CPIN
= Input Capacitance
= Threshold Voltage
VT
ILEAKAGE = Leakage Current at the pin due to
various junctions
= Interconnect Resistance
RIC
= Sampling Switch Resistance
RSS
= Sample/Hold Capacitance (from DAC)
CHOLD
Note: CPIN value depends on device package and is not tested. The effect of CPIN is negligible if Rs 5 k.
2010 Microchip Technology Inc.
DS39940D-page 267
PIC24FJ64GB004 FAMILY
FIGURE 22-3:
A/D TRANSFER FUNCTION
Output Code
(Binary (Decimal))
11 1111 1111 (1023)
11 1111 1110 (1022)
10 0000 0011 (515)
10 0000 0010 (514)
10 0000 0001 (513)
10 0000 0000 (512)
01 1111 1111 (511)
01 1111 1110 (510)
01 1111 1101 (509)
00 0000 0001 (1)
DS39940D-page 268
(VINH – VINL)
VR+
1024
1023*(VR+ – VR-)
VR- +
1024
VR- +
512*(VR+ – VR-)
1024
VR- +
Voltage Level
VR+ – VR-
0
VR-
00 0000 0000 (0)
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
23.0
TRIPLE COMPARATOR
MODULE
Note:
The comparator outputs may be directly connected to
the CxOUT pins. When the respective COE equals ‘1’,
the I/O pad logic makes the unsynchronized output of
the comparator available on the pin.
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
associated “PIC24F Family Reference
Manual”,
Section
46.
“Scalable
Comparator Module” (DS39734).
A simplified block diagram of the module in shown in
Figure 23-1. Diagrams of the possible individual
comparator configurations are shown in Figure 23-2.
Each comparator has its own control register,
CMxCON (Register 23-1), for enabling and configuring
its operation. The output and event status of all three
comparators are provided in the CMSTAT register
(Register 23-2).
The triple comparator module provides three dual input
comparators. The inputs to the comparator can be configured to use any one of four external analog inputs, as
well as voltage reference inputs from the voltage
reference generator and band gap reference.
FIGURE 23-1:
TRIPLE COMPARATOR MODULE BLOCK DIAGRAM
EVPOL
CCH
CREF
CPOL
Trigger/Interrupt
Logic
CEVT
COE
VINCXINB
CXINC
CXIND
VIN+
C1
Input
Select
Logic
COUT
C1OUT
Pin
EVPOL
CVREF-
CPOL
Trigger/Interrupt
Logic
CEVT
COE
VINVIN+
C2
COUT
EVPOL
CXINA
CVREF+
CPOL
VINVIN+
Trigger/Interrupt
Logic
CEVT
COE
C3
COUT
2010 Microchip Technology Inc.
C2OUT
Pin
C3OUT
Pin
DS39940D-page 269
PIC24FJ64GB004 FAMILY
FIGURE 23-2:
INDIVIDUAL COMPARATOR CONFIGURATIONS
Comparator Off
CEN = 0, CREF = x, CCH = xx
COE
VINVIN+
Cx
Off (Read as ‘0’)
Comparator CxINC > CxINA Compare
CEN = 1, CREF = 0, CCH = 01
Comparator CxINB > CxINA Compare
CEN = 1, CREF = 0, CCH = 00
CXINB
CXINA
COE
VINVIN+
CXINC
Cx
CxOUT
Pin
CXINA
COE
VINVIN+
CVREF-
Cx
CxOUT
Pin
Comparator CxINB > CVREF+ Compare
CEN = 1, CREF = 1, CCH = 00
CXINB
CVREF+
CXINC
Cx
CxOUT
Pin
CVREF+
DS39940D-page 270
VIN+
CVREF+
Cx
CxOUT
Pin
COE
VINVIN+
Cx
CxOUT
Pin
COE
VINVIN+
Cx
CxOUT
Pin
Comparator CVREF- > CVREF+ Compare
CEN = 1, CREF = 1, CCH = 11
COE
VIN-
VIN+
Comparator CxINC > CVREF+ Compare
CEN = 1, CREF = 1, CCH = 01
Comparator CxIND > CVREF+ Compare
CEN = 1, CREF = 1, CCH = 10
CXIND
CXINA
COE
VINVIN+
CXINA
COE
VIN-
Comparator CVREF- > CxINA Compare
CEN = 1, CREF = 0, CCH = 11
Comparator CxIND > CxINA Compare
CEN = 1, CREF = 0, CCH = 10
CXIND
CxOUT
Pin
CVREF-
Cx
CxOUT
Pin
CVREF+
COE
VINVIN+
Cx
CxOUT
Pin
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 23-1:
CMxCON: COMPARATOR x CONTROL REGISTERS
(COMPARATORS 1 THROUGH 3)
R/W-0
R/W-0
R/W-0
U-0
U-0
U-0
R/W-0
R-0
CEN
COE
CPOL
—
—
—
CEVT
COUT
bit 15
bit 8
R/W-0
R/W-0
U-0
R/W-0
U-0
U-0
R/W-0
R/W-0
EVPOL1
EVPOL0
—
CREF
—
—
CCH1
CCH0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
CEN: Comparator Enable bit
1 = Comparator is enabled
0 = Comparator is disabled
bit 14
COE: Comparator Output Enable bit
1 = Comparator output is present on the CxOUT pin.
0 = Comparator output is internal only
bit 13
CPOL: Comparator Output Polarity Select bit
1 = Comparator output is inverted
0 = Comparator output is not inverted
bit 12-10
Unimplemented: Read as ‘0’
bit 9
CEVT: Comparator Event bit
1 = Comparator event defined by EVPOL has occurred; subsequent triggers and interrupts are
disabled until the bit is cleared
0 = Comparator event has not occurred
bit 8
COUT: Comparator Output bit
When CPOL = 0:
1 = VIN+ > VIN0 = VIN+ < VINWhen CPOL = 1:
1 = VIN+ < VIN0 = VIN+ > VIN-
bit 7-6
EVPOL: Trigger/Event/Interrupt Polarity Select bits
11 = Trigger/event/interrupt generated on any change of the comparator output (while CEVT = 0)
10 = Trigger/event/interrupt generated on transition of the comparator output:
If CPOL = 0 (non-inverted polarity):
High-to-low transition only.
If CPOL = 1 (inverted polarity):
Low-to-high transition only.
01 = Trigger/event/interrupt generated on transition of comparator output:
If CPOL = 0 (non-inverted polarity):
Low-to-high transition only.
If CPOL = 1 (inverted polarity):
High-to-low transition only.
00 = Trigger/event/interrupt generation is disabled
bit 5
Unimplemented: Read as ‘0’
2010 Microchip Technology Inc.
DS39940D-page 271
PIC24FJ64GB004 FAMILY
REGISTER 23-1:
CMxCON: COMPARATOR x CONTROL REGISTERS
(COMPARATORS 1 THROUGH 3) (CONTINUED)
bit 4
CREF: Comparator Reference Select bits (non-inverting input)
1 = Non-inverting input connects to internal CVREF+ input reference voltage
0 = Non-inverting input connects to CxINA pin
bit 3-2
Unimplemented: Read as ‘0’
bit 1-0
CCH: Comparator Channel Select bits
11 = Inverting input of comparator connects to CVREF- input reference voltage
10 = Inverting input of comparator connects to CxIND pin
01 = Inverting input of comparator connects to CxINC pin
00 = Inverting input of comparator connects to CxINB pin
REGISTER 23-2:
CMSTAT: COMPARATOR MODULE STATUS REGISTER
R/W-0
U-0
U-0
U-0
U-0
R-0
R-0
R-0
CMIDL
—
—
—
—
C3EVT
C2EVT
C1EVT
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
R-0
R-0
R-0
—
—
—
—
—
C3OUT
C2OUT
C1OUT
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
CMIDL: Comparator Stop in Idle Mode bit
1 = Discontinue operation of all comparators when device enters Idle mode
0 = Continue operation of all enabled comparators in Idle mode
bit 14-11
Unimplemented: Read as ‘0’
bit 10
C3EVT: Comparator 3 Event Status bit (read-only)
Shows the current event status of Comparator 3 (CM3CON).
bit 9
C2EVT: Comparator 2 Event Status bit (read-only)
Shows the current event status of Comparator 2 (CM2CON).
bit 8
C1EVT: Comparator 1 Event Status bit (read-only)
Shows the current event status of Comparator 1 (CM1CON).
bit 7-3
Unimplemented: Read as ‘0’
bit 2
C3OUT: Comparator 3 Output Status bit (read-only)
Shows the current output of Comparator 3 (CM3CON).
bit 1
C2OUT: Comparator 2 Output Status bit (read-only)
Shows the current output of Comparator 2 (CM2CON).
bit 0
C1OUT: Comparator 1 Output Status bit (read-only)
Shows the current output of Comparator 1 (CM1CON).
DS39940D-page 272
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
24.0
COMPARATOR VOLTAGE
REFERENCE
Note:
24.1
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
“PIC24F Family Reference Manual”,
Section 20. “Comparator Voltage
Reference Module” (DS39709).
Configuring the Comparator
Voltage Reference
voltage, each with 16 distinct levels. The range to be
used is selected by the CVRR bit (CVRCON). The
primary difference between the ranges is the size of the
steps selected by the CVREF Selection bits
(CVR), with one range offering finer resolution.
The comparator reference supply voltage can come
from either VDD and VSS, or the external VREF+ and
VREF-. The voltage source is selected by the CVRSS
bit (CVRCON).
The settling time of the comparator voltage reference
must be considered when changing the CVREF
output.
The voltage reference module is controlled through the
CVRCON register (Register 24-1). The comparator
voltage reference provides two ranges of output
FIGURE 24-1:
VREF+
AVDD
COMPARATOR VOLTAGE REFERENCE BLOCK DIAGRAM
CVRSS = 1
8R
CVRSS = 0
CVR
CVREFP
R
CVREN
R
VREF+
1
CVREF+
R
16-to-1 MUX
R
0
16 Steps
R
CVREF
R
CVROE
R
CVRR
VREF-
CVREFM
8R
CVRSS = 1
CVRSS = 0
AVSS
2010 Microchip Technology Inc.
VREF+
11
VBG/6
10
VBG
01
VBG/2
00
CVREF-
DS39940D-page 273
PIC24FJ64GB004 FAMILY
REGISTER 24-1:
CVRCON: COMPARATOR VOLTAGE REFERENCE CONTROL REGISTER
U-0
U-0
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
—
—
—
—
—
CVREFP
CVREFM1
CVREFM0
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
CVREN
CVROE
CVRR
CVRSS
CVR3
CVR2
CVR1
CVR0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-11
Unimplemented: Read as ‘0’
bit 10
CVREFP: CVREF+ Reference Output Select bit
1 = Use VREF+ input pin as CVREF+ reference output to comparators
0 = Use comparator voltage reference module’s generated output as CVREF+ reference output to
comparators
bit 9-8
CVREFM: CVREF- Reference Output Select bits
11 = Use VREF+ input pin as CVREF- reference output to comparators
10 = Use VBG/6 as CVREF- reference output to comparators
01 = Use VBG as CVREF- reference output to comparators
00 = Use VBG/2 as CVREF- reference output to comparators
bit 7
CVREN: Comparator Voltage Reference Enable bit
1 = CVREF circuit is powered on
0 = CVREF circuit is powered down
bit 6
CVROE: Comparator VREF Output Enable bit
1 = CVREF voltage level is output on CVREF pin
0 = CVREF voltage level is disconnected from CVREF pin
bit 5
CVRR: Comparator VREF Range Selection bit
1 = CVRSRC range should be 0 to 0.625 CVRSRC with CVRSRC/24 step size
0 = CVRSRC range should be 0.25 to 0.719 CVRSRC with CVRSRC/32 step size
bit 4
CVRSS: Comparator VREF Source Selection bit
1 = Comparator reference source, CVRSRC = VREF+ – VREF0 = Comparator reference source, CVRSRC = AVDD – AVSS
bit 3-0
CVR: Comparator VREF Value Selection (0 CVR 15) bits
When CVRR = 1:
CVREF = (CVR/24) (CVRSRC)
When CVRR = 0:
CVREF = 1/4 (CVRSRC) + (CVR/32) (CVRSRC)
DS39940D-page 274
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
25.0
Note:
CHARGE TIME
MEASUREMENT UNIT (CTMU)
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
associated “PIC24F Family Reference
Manual”, Section 11. “Charge Time
Measurement Unit (CTMU)” (DS39724).
The Charge Time Measurement Unit is a flexible
analog module that provides accurate differential time
measurement between pulse sources, as well as
asynchronous pulse generation. Its key features
include:
•
•
•
•
•
•
Four edge input trigger sources
Polarity control for each edge source
Control of edge sequence
Control of response to edges
Time measurement resolution of 1 nanosecond
Accurate current source suitable for capacitive
measurement
Together with other on-chip analog modules, the CTMU
can be used to precisely measure time, measure
capacitance, measure relative changes in capacitance
or generate output pulses that are independent of the
system clock. The CTMU module is ideal for interfacing
with capacitive-based sensors.
The CTMU is controlled through two registers:
CTMUCON and CTMUICON. CTMUCON enables the
module and controls edge source selection, edge
source polarity selection and edge sequencing. The
CTMUICON register controls the selection and trim of
the current source.
FIGURE 25-1:
25.1
Measuring Capacitance
The CTMU module measures capacitance by generating an output pulse, with a width equal to the time
between edge events, on two separate input channels.
The pulse edge events to both input channels can be
selected from four sources: two internal peripheral
modules (OC1 and Timer1) and two external pins
(CTEDG1 and CTEDG2). This pulse is used with the
module’s precision current source to calculate
capacitance according to the relationship:
i=C•
dV
dT
For capacitance measurements, the A/D Converter
samples an external capacitor (CAPP) on one of its
input channels after the CTMU output’s pulse. A Precision Resistor (RPR) provides current source calibration
on a second A/D channel. After the pulse ends, the
converter determines the voltage on the capacitor. The
actual calculation of capacitance is performed in
software by the application.
Figure 25-1 shows the external connections used for
capacitance measurements, and how the CTMU and
A/D modules are related in this application. This
example also shows the edge events coming from
Timer1, but other configurations using external edge
sources are possible. A detailed discussion on
measuring capacitance and time with the CTMU
module is provided in the “PIC24F Family Reference
Manual”.
TYPICAL CONNECTIONS AND INTERNAL CONFIGURATION FOR
CAPACITANCE MEASUREMENT
PIC24F Device
Timer1
CTMU
EDG1
Current Source
EDG2
Output Pulse
ANx
A/D Converter
ANY
CAPP
2010 Microchip Technology Inc.
RPR
DS39940D-page 275
PIC24FJ64GB004 FAMILY
25.2
Measuring Time
25.3
Time measurements on the pulse width can be similarly
performed using the A/D module’s internal capacitor
(CAD) and a precision resistor for current calibration.
Figure 25-2 shows the external connections used for
time measurements, and how the CTMU and A/D
modules are related in this application. This example also
shows both edge events coming from the external
CTEDG pins, but other configurations using internal
edge sources are possible. For the smallest time
measurements, select the internal A/D Channel 31,
CH0S = 11111. This minimizes any stray
capacitance that may otherwise be associated with
using an input pin, thus keeping the total capacitance
to that of the A/D Converter itself (4-5 pF). A detailed
discussion on measuring capacitance and time with the
CTMU module is provided in the “PIC24F Family
Reference Manual”.
FIGURE 25-2:
Pulse Generation and Delay
The CTMU module can also generate an output pulse with
edges that are not synchronous with the device’s system
clock. More specifically, it can generate a pulse with a
programmable delay from an edge event input to the module.
When the module is configured for pulse generation
delay by setting the TGEN bit (CTMUCON), the
internal current source is connected to the B input of
Comparator 2. A capacitor (CDELAY) is connected to
the Comparator 2 pin, C2INB, and the comparator voltage reference, CVREF, is connected to C2INA. CVREF
is then configured for a specific trip point. The module
begins to charge CDELAY when an edge event is
detected. When CDELAY charges above the CVREF trip
point, a pulse is output on CTPLS. The length of the
pulse delay is determined by the value of CDELAY and
the CVREF trip point.
Figure 25-3 shows the external connections for pulse
generation, as well as the relationship of the different analog modules required. While CTEDG1 is shown as the
input pulse source, other options are available. A detailed
discussion on pulse generation with the CTMU module is
provided in the “PIC24F Family Reference Manual”.
TYPICAL CONNECTIONS AND INTERNAL CONFIGURATION FOR TIME
MEASUREMENT
PIC24F Device
CTMU
CTEDG1
EDG1
CTEDG2
EDG2
Current Source
Output Pulse
ANx
A/D Converter
CAD
RPR
FIGURE 25-3:
TYPICAL CONNECTIONS AND INTERNAL CONFIGURATION FOR PULSE
DELAY GENERATION
PIC24F Device
CTEDG1
EDG1
CTMU
CTPLS
Current Source
Comparator
C2INB
C2
CDELAY
CVREF
DS39940D-page 276
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 25-1:
R/W-0
CTMUCON: CTMU CONTROL REGISTER
U-0
CTMUEN
R/W-0
—
CTMUSIDL
R/W-0
(1)
TGEN
R/W-0
R/W-0
R/W-0
R/W-0
EDGEN
EDGSEQEN
IDISSEN
CTTRIG
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
EDG2POL
EDG2SEL1
EDG2SEL0
EDG1POL
EDG1SEL1
EDG1SEL0
EDG2STAT
EDG1STAT
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15
CTMUEN: CTMU Enable bit
1 = Module is enabled
0 = Module is disabled
bit 14
Unimplemented: Read as ‘0’
bit 13
CTMUSIDL: Stop in Idle Mode bit
1 = Discontinue module operation when device enters Idle mode
0 = Continue module operation in Idle mode
bit 12
TGEN: Time Generation Enable bit(1)
1 = Enables edge delay generation
0 = Disables edge delay generation
bit 11
EDGEN: Edge Enable bit
1 = Edges are not blocked
0 = Edges are blocked
bit 10
EDGSEQEN: Edge Sequence Enable bit
1 = Edge 1 event must occur before Edge 2 event can occur
0 = No edge sequence is needed
bit 9
IDISSEN: Analog Current Source Control bit
1 = Analog current source output is grounded
0 = Analog current source output is not grounded
bit 8
CTTRIG: Trigger Control bit
1 = Trigger output is enabled
0 = Trigger output is disabled
bit 7
EDG2POL: Edge 2 Polarity Select bit
1 = Edge 2 programmed for a positive edge response
0 = Edge 2 programmed for a negative edge response
bit 6-5
EDG2SEL: Edge 2 Source Select bits
11 = CTED1 pin
10 = CTED2 pin
01 = OC1 module
00 = Timer1 module
bit 4
EDG1POL: Edge 1 Polarity Select bit
1 = Edge 1 programmed for a positive edge response
0 = Edge 1 programmed for a negative edge response
Note 1:
x = Bit is unknown
If TGEN = 1, the peripheral inputs and outputs must be configured to an available RPn pin. For more
information, see Section 10.4 “Peripheral Pin Select (PPS)”.
2010 Microchip Technology Inc.
DS39940D-page 277
PIC24FJ64GB004 FAMILY
REGISTER 25-1:
CTMUCON: CTMU CONTROL REGISTER (CONTINUED)
bit 3-2
EDG1SEL: Edge 1 Source Select bits
11 = CTED1 pin
10 = CTED2 pin
01 = OC1 module
00 = Timer1 module
bit 1
EDG2STAT: Edge 2 Status bit
1 = Edge 2 event has occurred
0 = Edge 2 event has not occurred
bit 0
EDG1STAT: Edge 1 Status bit
1 = Edge 1 event has occurred
0 = Edge 1 event has not occurred
Note 1:
If TGEN = 1, the peripheral inputs and outputs must be configured to an available RPn pin. For more
information, see Section 10.4 “Peripheral Pin Select (PPS)”.
REGISTER 25-2:
CTMUICON: CTMU CURRENT CONTROL REGISTER
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
ITRIM5
ITRIM4
ITRIM3
ITRIM2
ITRIM1
ITRIM0
IRNG1
IRNG0
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 15-10
ITRIM: Current Source Trim bits
011111 = Maximum positive change from nominal current
011110
.....
000001 = Minimum positive change from nominal current
000000 = Nominal current output specified by IRNG
111111 = Minimum negative change from nominal current
.....
100010
100001 = Maximum negative change from nominal current
bit 9-8
IRNG: Current Source Range Select bits
11 = 100 Base Current
10 = 10 Base Current
01 = Base current level (0.55 A nominal)
00 = Current source disabled
bit 7-0
Unimplemented: Read as ‘0’
DS39940D-page 278
x = Bit is unknown
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
26.0
Note:
SPECIAL FEATURES
26.1.1
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
following sections of the “PIC24F Family
Reference Manual”:
In PIC24FJ64GB004 family devices, the configuration
bytes are implemented as volatile memory. This means
that configuration data must be programmed each time
the device is powered up. Configuration data is stored
in the three words at the top of the on-chip program
memory space, known as the Flash Configuration
Words. Their specific locations are shown in
Table 26-1. These are packed representations of the
actual device Configuration bits, whose actual
locations are distributed among several locations in
configuration space. The configuration data is automatically loaded from the Flash Configuration Words to the
proper Configuration registers during device Resets.
• Section 9. “Watchdog Timer (WDT)”
(DS39697)
• Section 32. “High-Level Device
Integration” (DS39719)
• Section 33. “Programming and
Diagnostics” (DS39716)
PIC24FJ64GB004 family devices include several
features intended to maximize application flexibility and
reliability, and minimize cost through elimination of
external components. These are:
•
•
•
•
•
•
Note:
Flexible Configuration
Watchdog Timer (WDT)
Code Protection
JTAG Boundary Scan Interface
In-Circuit Serial Programming
In-Circuit Emulation
26.1
Configuration data is reloaded on all types
of device Resets.
When creating applications for these devices, users
should always specifically allocate the location of the
Flash Configuration Word for configuration data. This is
to make certain that program code is not stored in this
address when the code is compiled.
The upper byte of all Flash Configuration Words in
program memory should always be ‘1111 1111’. This
makes them appear to be NOP instructions in the
remote event that their locations are ever executed by
accident. Since Configuration bits are not implemented
in the corresponding locations, writing ‘1’s to these
locations has no effect on device operation.
Configuration Bits
The Configuration bits can be programmed (read as ‘0’),
or left unprogrammed (read as ‘1’), to select various
device configurations. These bits are mapped starting at
program memory location F80000h. A detailed explanation of the various bit functions is provided in
Register 26-1 through Register 26-6.
Note:
Note that address F80000h is beyond the user program
memory space. In fact, it belongs to the configuration
memory space (800000h-FFFFFFh) which can only be
accessed using table reads and table writes.
TABLE 26-1:
CONSIDERATIONS FOR
CONFIGURING PIC24FJ64GB004
FAMILY DEVICES
Performing a page erase operation on the
last page of program memory clears the
Flash Configuration Words, enabling code
protection as a result. Therefore, users
should avoid performing page erase
operations on the last page of program
memory.
FLASH CONFIGURATION WORD LOCATIONS FOR PIC24FJ64GB004 FAMILY
DEVICES
Device
Configuration Word Addresses
1
2
3
4
PIC24FJ32GB00X
57FEh
57FCh
57FAh
57F8h
PIC24FJ64GB00X
ABFEh
ABFCh
ABFAh
ABF8h
2010 Microchip Technology Inc.
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PIC24FJ64GB004 FAMILY
REGISTER 26-1:
CW1: FLASH CONFIGURATION WORD 1
U-1
U-1
U-1
U-1
U-1
U-1
U-1
U-1
—
—
—
—
—
—
—
—
bit 23
bit 16
r-x
R/PO-1
R/PO-1
R/PO-1
R/PO-1
U-1
R/PO-1
R/PO-1
r
JTAGEN(1)
GCP
GWRP
DEBUG
—
ICS1
ICS0
bit 15
bit 8
R/PO-1
R/PO-1
U-1
R/PO-1
R/PO-1
R/PO-1
R/PO-1
R/PO-1
FWDTEN
WINDIS
—
FWPSA
WDTPS3
WDTPS2
WDTPS1
WDTPS0
bit 7
bit 0
Legend:
r = Reserved bit
R = Readable bit
PO = Program Once bit
-n = Value when device is unprogrammed
U = Unimplemented bit, read as ‘0’
‘1’ = Bit is set
bit 23-16
Unimplemented: Read as ‘1’
bit 15
Reserved: The value is unknown; program as ‘0’
bit 14
JTAGEN: JTAG Port Enable bit(1)
1 = JTAG port is enabled
0 = JTAG port is disabled
bit 13
GCP: General Segment Program Memory Code Protection bit
1 = Code protection is disabled
0 = Code protection is enabled for the entire program memory space
bit 12
GWRP: General Segment Code Flash Write Protection bit
1 = Writes to program memory are allowed
0 = Writes to program memory are disabled
bit 11
DEBUG: Background Debugger Enable bit
1 = Device resets into Operational mode
0 = Device resets into Debug mode
bit 10
Unimplemented: Read as ‘1’
bit 9-8
ICS: Emulator Pin Placement Select bits
11 = Emulator functions are shared with PGEC1/PGED1
10 = Emulator functions are shared with PGEC2/PGED2
01 = Emulator functions are shared with PGEC3/PGED3
00 = Reserved; do not use
bit 7
FWDTEN: Watchdog Timer Enable bit
1 = Watchdog Timer is enabled
0 = Watchdog Timer is disabled
bit 6
WINDIS: Windowed Watchdog Timer Disable bit
1 = Standard Watchdog Timer is enabled
0 = Windowed Watchdog Timer is enabled; FWDTEN must be ‘1’
bit 5
Unimplemented: Read as ‘1’
bit 4
FWPSA: WDT Prescaler Ratio Select bit
1 = Prescaler ratio of 1:128
0 = Prescaler ratio of 1:32
Note 1:
‘0’ = Bit is cleared
The JTAGEN bit can only be modified using In-Circuit Serial Programming™ (ICSP™). It cannot be
modified while connected through the JTAG interface.
DS39940D-page 280
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 26-1:
bit 3-0
Note 1:
CW1: FLASH CONFIGURATION WORD 1 (CONTINUED)
WDTPS: Watchdog Timer Postscaler Select bits
1111 = 1:32,768
1110 = 1:16,384
1101 = 1:8,192
1100 = 1:4,096
1011 = 1:2,048
1010 = 1:1,024
1001 = 1:512
1000 = 1:256
0111 = 1:128
0110 = 1:64
0101 = 1:32
0100 = 1:16
0011 = 1:8
0010 = 1:4
0001 = 1:2
0000 = 1:1
The JTAGEN bit can only be modified using In-Circuit Serial Programming™ (ICSP™). It cannot be
modified while connected through the JTAG interface.
2010 Microchip Technology Inc.
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REGISTER 26-2:
U-1
—
bit 23
CW2: FLASH CONFIGURATION WORD 2
U-1
—
U-1
—
U-1
—
U-1
—
U-1
—
U-1
—
R/PO-1
IESO
bit 15
R/PO-1
PLLDIV2
R/PO-1
PLLDIV1
R/PO-1
PLLDIV0
R/PO-1
PLL96MHZ
R/PO-1
FNOSC2
R/PO-1
FNOSC1
R/PO-1
FNOSC0
bit 8
R/PO-1
FCKSM1
bit 7
R/PO-1
FCKSM0
R/PO-1
OSCIOFCN
R/PO-1
IOL1WAY
U-1
—
R/PO-1
I2C1SEL
R/PO-1
POSCMD1
R/PO-1
POSCMD0
bit 0
Legend:
R = Readable bit
PO = Program Once bit
-n = Value when device is unprogrammed
bit 23-16
bit 15
bit 14-12
bit 11
bit 10-8
bit 7-6
bit 5
U-1
—
bit 16
U = Unimplemented bit, read as ‘0’
‘1’ = Bit is set
‘0’ = Bit is cleared
Unimplemented: Read as ‘1’
IESO: Internal External Switchover bit
1 = IESO mode (Two-Speed Start-up) is enabled
0 = IESO mode (Two-Speed Start-up) is disabled
PLLDIV: USB 96 MHz PLL Prescaler Select bits
111 = Oscillator input divided by 12 (48 MHz input)
110 = Oscillator input divided by 8 (32 MHz input)
101 = Oscillator input divided by 6 (24 MHz input)
100 = Oscillator input divided by 5 (20 MHz input)
011 = Oscillator input divided by 4 (16 MHz input)
010 = Oscillator input divided by 3 (12 MHz input)
001 = Oscillator input divided by 2 (8 MHz input)
000 = Oscillator input used directly (4 MHz input)
PLL96MHZ: USB 96 MHz PLL Start-up Enable bit
1 = 96 MHz PLL is enabled automatically on start-up
0 = 96 MHz PLL is enabled by user in software (controlled with the PLLEN bit in CLKDIV)
FNOSC: Initial Oscillator Select bits
111 = Fast RC Oscillator with Postscaler (FRCDIV)
110 = Reserved
101 = Low-Power RC Oscillator (LPRC)
100 = Secondary Oscillator (SOSC)
011 = Primary Oscillator with PLL module (XTPLL, HSPLL, ECPLL)
010 = Primary Oscillator (XT, HS, EC)
001 = Fast RC Oscillator with Postscaler and PLL module (FRCPLL)
000 = Fast RC Oscillator (FRC)
FCKSM: Clock Switching and Fail-Safe Clock Monitor Configuration bits
1x = Clock switching and Fail-Safe Clock Monitor are disabled
01 = Clock switching is enabled, Fail-Safe Clock Monitor is disabled
00 = Clock switching is enabled, Fail-Safe Clock Monitor is enabled
OSCIOFCN: OSCO Pin Configuration bit
If POSCMD = 11 or 00:
1 = OSCO/CLKO/RA3 functions as CLKO (FOSC/2)
0 = OSCO/CLKO/RA3 functions as port I/O (RC15)
If POSCMD = 10 or 01:
OSCIOFCN has no effect on OSCO/CLKO/RA3.
DS39940D-page 282
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 26-2:
bit 4
bit 3
bit 2
bit 1-0
CW2: FLASH CONFIGURATION WORD 2 (CONTINUED)
IOL1WAY: IOLOCK One-Way Set Enable bit
1 = The IOLOCK bit (OSCCON) can be set once, provided the unlock sequence has been
completed. Once set, the Peripheral Pin Select registers cannot be written to a second time.
0 = The IOLOCK bit can be set and cleared as needed, provided the unlock sequence has been
completed
Unimplemented: Read as ‘1’
I2C1SEL: I2C1 Pin Select bit
1 = Use default SCL1/SDA1 pins
0 = Use alternate SCL1/SDA1 pins
POSCMD: Primary Oscillator Configuration bits
11 = Primary Oscillator is disabled
10 = HS Oscillator mode is selected
01 = XT Oscillator mode is selected
00 = EC Oscillator mode is selected
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REGISTER 26-3:
U-1
—
bit 23
R/PO-1
WPEND
bit 15
CW3: FLASH CONFIGURATION WORD 3
U-1
—
U-1
—
U-1
—
U-1
—
U-1
—
R/PO-1
WPCFG
R/PO-1
WPDIS
U-1
—
R/PO-1
WUTSEL1
R/PO-1
WUTSEL0
U-1
—
R/PO-1
WPFP5
R/PO-1
WPFP4
R/PO-1
WPFP3
R/PO-1
WPFP2
U-1
—
bit 7
Legend:
R = Readable bit
PO = Program Once bit
-n = Value when device is unprogrammed
bit 23-16
bit 15
bit 14
bit 13
bit 12
bit 11-10
bit 9-8
bit 7-6
bit 5-0
Note 1:
U-1
—
U-1
—
bit 16
R/PO-1
R/PO-1
(1)
SOSCSEL1
SOSCSEL0(1)
bit 8
R/PO-1
WPFP1
R/PO-1
WPFP0
bit 0
U = Unimplemented bit, read as ‘0’
‘1’ = Bit is set
‘0’ = Bit is cleared
Unimplemented: Read as ‘1’
WPEND: Segment Write Protection End Page Select bit
1 = Protected code segment lower boundary is at the bottom of program memory (000000h); upper
boundary is the code page specified by WPFP
0 = Protected code segment upper boundary is at the last page of program memory; lower boundary
is the code page specified by WPFP
WPCFG: Configuration Word Code Page Protection Select bit
1 = Last page (at the top of program memory) and Flash Configuration Words are not protected
0 = Last page and Flash Configuration Words are code-protected
WPDIS: Segment Write Protection Disable bit
1 = Segmented code protection is disabled
0 = Segmented code protection is enabled; protected segment is defined by WPEND, WPCFG and
WPFPx Configuration bits
Unimplemented: Read as ‘1’
WUTSEL: Voltage Regulator Standby Mode Wake-up Time Select bits
11 = Default regulator start-up time is used
01 = Fast regulator start-up time is used
x0 = Reserved; do not use
SOSCSEL: Secondary Oscillator Power Mode Select bits(1)
11 = SOSC pins are in default (high drive strength) oscillator mode
01 = SOSC pins are in Low-Power (low drive strength) Oscillator mode
00 = SOSC pins have digital I/O functions (RA4, RB4); SCLKI can be used
10 = Reserved
Unimplemented: Read as ‘1’
WPFP: Protected Code Segment Boundary Page bits
Designates the 512 instruction page that is the boundary of the protected code segment, starting with
Page 9 at the bottom of program memory.
If WPEND = 1:
Last address of designated code page is the upper boundary of the segment.
If WPEND = 0:
First address of designated code page is the lower boundary of the segment.
Digital functions on the SOSCI and SOSCO pins are only available when configured in Digital I/O mode (‘00’).
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2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
REGISTER 26-4:
CW4: FLASH CONFIGURATION WORD 4
U-1
U-1
U-1
U-1
U-1
U-1
U-1
U-1
—
—
—
—
—
—
—
—
bit 23
bit 16
U-1
U-1
U-1
U-1
U-1
U-1
U-1
U-1
—
—
—
—
—
—
—
—
bit 15
bit 8
R/PO-1
R/PO-1
R/PO-1
DSWDTEN
DSBOREN
RTCOSC
R/PO-1
R/PO-1
R/PO-1
R/PO-1
R/PO-1
DSWDTOSC DSWDTPS3 DSWDTPS2 DSWDTPS1 DSWDTPS0
bit 7
bit 0
Legend:
R = Readable bit
PO = Program Once bit
-n = Value when device is unprogrammed
U = Unimplemented bit, read as ‘0’
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 23-8
Unimplemented: Read as ‘1’
bit 7
DSWDTEN: Deep Sleep Watchdog Timer Enable bit
1 = DSWDT is enabled
0 = DSWDT is disabled
bit 6
DSBOREN: Deep Sleep BOR Enable bit
1 = BOR is enabled in Deep Sleep
0 = BOR is disabled in Deep Sleep (does not affect Sleep mode)
bit 5
RTCOSC: RTCC Reference Clock Select bit
1 = RTCC uses SOSC as reference clock
0 = RTCC uses LPRC as reference clock
bit 4
DSWDTOSC: DSWDT Reference Clock Select bit
1 = DSWDT uses LPRC as reference clock
0 = DSWDT uses SOSC as reference clock
bit 3-0
DSWDTPS: DSWDT Postscale select bits
The DSWDT prescaler is 32; this creates an approximate base time unit of 1 ms.
1111 = 1:2,147,483,648 (25.7 days)
1110 = 1:536,870,912 (6.4 days)
1101 = 1:134,217,728 (38.5 hours)
1100 = 1:33,554,432 (9.6 hours)
1011 = 1:8,388,608 (2.4 hours)
1010 = 1:2,097,152 (36 minutes)
1001 = 1:524,288 (9 minutes)
1000 = 1:131,072 (135 seconds)
0111 = 1:32,768 (34 seconds)
0110 = 1:8,192 (8.5 seconds)
0101 = 1:2,048 (2.1 seconds)
0100 = 1:512 (528 ms)
0011 = 1:128 (132 ms)
0010 = 1:32 (33 ms)
0001 = 1:8 (8.3 ms)
0000 = 1:2 (2.1 ms)
2010 Microchip Technology Inc.
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PIC24FJ64GB004 FAMILY
REGISTER 26-5:
U
—
bit 23
DEVID: DEVICE ID REGISTER
U
—
U
—
U
—
U
—
U
—
U
—
R
FAMID7
bit 15
R
FAMID6
R
FAMID5
R
FAMID4
R
FAMID3
R
FAMID2
R
FAMID1
R
FAMID0
bit 8
R
DEV7
bit 7
R
DEV6
R
DEV5
R
DEV4
R
DEV3
R
DEV2
R
DEV1
R
DEV0
bit 0
Legend: R = Read-Only bit
bit 23-16
bit 15-8
bit 7-0
U
—
bit 16
U = Unimplemented bit
Unimplemented: Read as ‘1’
FAMID: Device Family Identifier bits
01000010 = PIC24FJ64GB004 family
DEV: Individual Device Identifier bits
00000011 = PIC24FJ32GB002
00000111 = PIC24FJ64GB002
00001011 = PIC24FJ32GB004
00001111 = PIC24FJ64GB004
REGISTER 26-6:
DEVREV: DEVICE REVISION REGISTER
U
—
U
—
U
—
U
—
U
—
U
—
U
—
U
—
bit 16
U
—
U
—
U
—
U
—
U
—
U
—
U
—
U
—
bit 23
bit 15
bit 8
U
—
U
—
U
—
U
—
R
REV3
R
REV2
R
REV1
bit 7
Legend: R = Read-only bit
bit 23-4
bit 3-0
R
REV0
bit 0
U = Unimplemented bit
Unimplemented: Read as ‘0’
REV: Minor Revision Identifier bits
Encodes revision number of the device (sequential number only; no major/minor fields).
DS39940D-page 286
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
26.2
On-Chip Voltage Regulator
All PIC24FJ64GB004 family devices power their core
digital logic at a nominal 2.5V. This may create an issue
for designs that are required to operate at a higher
typical voltage, such as 3.3V. To simplify system
design, all devices in the PIC24FJ64GB004 family
incorporate an on-chip regulator that allows the device
to run its core logic from VDD.
The regulator is controlled by the DISVREG pin. Tying VSS
to the pin enables the regulator, which in turn, provides
power to the core from the other VDD pins. When the regulator is enabled, a low-ESR capacitor (such as ceramic)
must be connected to the VDDCORE/VCAP pin
(Figure 26-1). This helps to maintain the stability of the
regulator. The recommended value for the Filter Capacitor
(CEFC) is provided in Section 29.1 “DC Characteristics”.
FIGURE 26-1:
Regulator Enabled (DISVREG tied to VSS):
3.3V
PIC24FJ64GB004
VDD
DISVREG
VDDCORE/VCAP
CEFC
(10 F typ)
VOLTAGE REGULATOR TRACKING
MODE AND LOW-VOLTAGE
DETECTION
2.5V(1)
When the device enters Tracking mode, it is no longer
possible to operate at full speed. To provide information
about when the device enters Tracking mode, the
on-chip regulator includes a simple, Low-Voltage
Detect circuit. When VDD drops below full-speed operating voltage, the circuit sets the Low-Voltage Detect
Interrupt Flag, LVDIF (IFS4). This can be used to
generate an interrupt and put the application into a
Low-Power Operational mode or trigger an orderly
shutdown.
Low-Voltage Detection is only available when the
regulator is enabled.
3.3V(1)
PIC24FJ64GB004
VDD
DISVREG
VDDCORE/VCAP
VSS
Regulator Disabled (VDD tied to VDDCORE):
2.5V(1)
PIC24FJ64GB004
VDD
When it is enabled, the on-chip regulator provides a
constant voltage of 2.5V nominal to the digital core
logic.
The regulator can provide this level from a VDD of about
2.5V, all the way up to the device’s VDDMAX. It does not
have the capability to boost VDD levels below 2.5V. In
order to prevent “brown-out” conditions when the voltage drops too low for the regulator, the regulator enters
Tracking mode. In Tracking mode, the regulator output
follows VDD with a typical voltage drop of 100 mV.
VSS
Regulator Disabled (DISVREG tied to VDD):
If DISVREG is tied to VDD, the regulator is disabled. In
this case, separate power for the core logic, at a nominal 2.5V, must be supplied to the device on the
VDDCORE/VCAP pin to run the I/O pins at higher voltage
levels, typically 3.3V. Alternatively, the VDDCORE/VCAP
and VDD pins can be tied together to operate at a lower
nominal voltage. Refer to Figure 26-1 for possible
configurations.
26.2.1
CONNECTIONS FOR THE
ON-CHIP REGULATOR
DISVREG
VDDCORE/VCAP
VSS
Note 1:
26.2.2
These are typical operating voltages. Refer
to Section 29.1 “DC Characteristics” for
the full operating ranges of VDD and
VDDCORE.
ON-CHIP REGULATOR AND POR
When the voltage regulator is enabled, it takes approximately 10 s for it to generate output. During this time,
designated as TPM, code execution is disabled. TPM is
applied every time the device resumes operation after
any power-down, including Sleep mode. TPM is
determined by the setting of the PMSLP bit (RCON)
and the WUTSEL Configuration bits (CW3).
Note:
For more information on TPM, see
Section 29.0 “Electrical Characteristics”.
If the regulator is disabled, a separate Power-up Timer
(PWRT) is automatically enabled. The PWRT adds a
fixed delay of 64 ms nominal delay at device start-up
(POR or BOR only).
2010 Microchip Technology Inc.
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When waking up from Sleep mode with the regulator
disabled, TPM is used to determine the wake-up time.
To decrease the device wake-up time when operating
with the regulator disabled, the PMSLP bit can be set.
26.3
26.2.3
The nominal WDT clock source from LPRC is 31 kHz.
This feeds a prescaler that can be configured for either
5-bit (divide-by-32) or 7-bit (divide-by-128) operation.
The prescaler is set by the FWPSA Configuration bit.
With a 31 kHz input, the prescaler yields a nominal
WDT time-out period (TWDT) of 1 ms in 5-bit mode, or
4 ms in 7-bit mode.
ON-CHIP REGULATOR AND BOR
When
the
on-chip
regulator
is
enabled,
PIC24FJ64GB004 family devices also have a simple
brown-out capability. If the voltage supplied to the regulator is inadequate to maintain the tracking level, the
regulator Reset circuitry will generate a Brown-out
Reset. This event is captured by the BOR flag bit
(RCON). The brown-out voltage specifications are
provided in Section 29.0 “Electrical Characteristics”.
26.2.4
POWER-UP REQUIREMENTS
The on-chip regulator is designed to meet the power-up
requirements for the device. If the application does not
use the regulator, then strict power-up conditions must
be adhered to. While powering up, VDDCORE must
never exceed VDD by 0.3 volts.
Note:
26.2.5
For more information, see Section 29.0
“Electrical Characteristics”.
VOLTAGE REGULATOR STANDBY
MODE
When enabled, the on-chip regulator always consumes
a small incremental amount of current over IDD/IPD,
including when the device is in Sleep mode, even
though the core digital logic does not require power. To
provide additional savings in applications where power
resources are critical, the regulator automatically
places itself into Standby mode whenever the device
goes into Sleep mode by removing power from the
Flash program memory. This feature is controlled by
the PMSLP bit (RCON). By default, this bit is
cleared, which enables Standby mode.
For PIC24FJ64GB004 family devices, the time
required for regulator wake-up from Standby mode is
controlled by the WUTSEL Configuration bits
(CW3). The default wake-up time for all
devices is 190 s, which is a Legacy mode provided to
match older PIC24F device wake-up times.
Implementing the WUTSEL Configuration bits provides
a fast wake-up option. When WUTSEL = 01, the
regulator wake-up time is TPM, 10 s.
Watchdog Timer (WDT)
For PIC24FJ64GB004 family devices, the WDT is
driven by the LPRC Oscillator. When the WDT is
enabled, the clock source is also enabled.
A variable postscaler divides down the WDT prescaler
output and allows for a wide range of time-out periods.
The postscaler is controlled by the WDTPS
Configuration bits (CW1), which allow the selection of a total of 16 settings, from 1:1 to 1:32,768. Using
the prescaler and postscaler time-out periods, ranging
from 1 ms to 131 seconds can be achieved.
The WDT, prescaler and postscaler are reset:
• On any device Reset
• On the completion of a clock switch, whether
invoked by software (i.e., setting the OSWEN bit
after changing the NOSC bits) or by hardware
(i.e., Fail-Safe Clock Monitor)
• When a PWRSAV instruction is executed
(i.e., Sleep or Idle mode is entered)
• When the device exits Sleep or Idle mode to
resume normal operation
• By a CLRWDT instruction during normal execution
If the WDT is enabled, it will continue to run during
Sleep or Idle modes. When the WDT time-out occurs,
the device will wake the device and code execution will
continue from where the PWRSAV instruction was
executed. The corresponding SLEEP or IDLE bits
(RCON) will need to be cleared in software after
the device wakes up.
The WDT Flag bit, WDTO (RCON), is not automatically cleared following a WDT time-out. To detect
subsequent WDT events, the flag must be cleared in
software.
Note:
The CLRWDT and PWRSAV instructions
clear the prescaler and postscaler counts
when executed.
When the regulator’s Standby mode is turned off
(PMSLP = 1), Flash program memory stays powered in
Sleep mode. That enables device wake-up without
waiting for TPM. With PMSLP set, however, the power
consumption, while in Sleep mode, will be
approximately 40 A higher than what it would be if the
regulator was allowed to enter Standby mode.
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26.3.1
WINDOWED OPERATION
26.3.2
The Watchdog Timer has an optional Fixed Window
mode of operation. In this Windowed mode, CLRWDT
instructions can only reset the WDT during the last 1/4
of the programmed WDT period. A CLRWDT instruction
is executed before that window causes a WDT Reset;
this is similar to a WDT time-out.
Windowed WDT mode is enabled by programming the
WINDIS Configuration bit (CW1) to ‘0’.
FIGURE 26-2:
CONTROL REGISTER
The WDT is enabled or disabled by the FWDTEN
Configuration bit. When the FWDTEN Configuration bit
is set, the WDT is always enabled.
The WDT can be optionally controlled in software when
the FWDTEN Configuration bit has been programmed
to ‘0’. The WDT is enabled in software by setting the
SWDTEN control bit (RCON). The SWDTEN
control bit is cleared on any device Reset. The WDT
software option allows the user to enable the WDT for
critical code segments, and disable the WDT during
non-critical segments, for maximum power savings.
WDT BLOCK DIAGRAM
SWDTEN
FWDTEN
LPRC Control
FWPSA
WDTPS
Prescaler
(5-bit/7-bit)
LPRC Input
31 kHz
Wake From Sleep
WDT
Counter
Postscaler
1:1 to 1:32.768
1 ms/4 ms
WDT Overflow
Reset
All Device Resets
Transition to
New Clock Source
Exit Sleep or
Idle Mode
CLRWDT Instr.
PWRSAV Instr.
Sleep or Idle Mode
26.4
Deep Sleep Watchdog Timer
(DSWDT)
PIC24FJ64GB004 family devices have both a WDT
module and a DSWDT module. The latter runs, if
enabled, when a device is in Deep Sleep and is driven
by either the SOSC or LPRC Oscillator. The clock
source is selected by the DSWDTOSC (CW4)
Configuration bit.
The DSWDT can be configured to generate a time-out
at 2.1 ms to 25.7 days by selecting the respective
postscaler. The postscaler can be selected by the
Configuration bits, DSWDTPS (CW4).
When the DSWDT is enabled, the clock source is also
enabled. DSWDT is one of the sources that can wake
the device from Deep Sleep mode.
26.5
Program Verification and
Code Protection
PIC24FJ64GB004 family devices provide two complimentary methods to protect application code from
overwrites and erasures. These also help to protect the
device from inadvertent configuration changes during
run time.
26.5.1
GENERAL SEGMENT PROTECTION
For all devices in the PIC24FJ64GB004 family, the
on-chip program memory space is treated as a single
block, known as the General Segment (GS). Code protection for this block is controlled by one Configuration
bit, GCP. This bit inhibits external reads and writes to
the program memory space. It has no direct effect in
normal execution mode.
Write protection is controlled by the GWRP bit in the
Configuration Word. When GWRP is programmed to
‘0’, internal write and erase operations to program
memory are blocked.
2010 Microchip Technology Inc.
DS39940D-page 289
PIC24FJ64GB004 FAMILY
26.5.2
CODE SEGMENT PROTECTION
In addition to global General Segment protection, a
separate subrange of the program memory space can
be individually protected against writes and erases.
This area can be used for many purposes where a separate block of erase and write-protected code is
needed, such as bootloader applications. Unlike
common boot block implementations, the specially
protected segment in the PIC24FJ64GB004 family
devices can be located by the user anywhere in the
program space and configured in a wide range of sizes.
Code segment protection provides an added level of
protection to a designated area of program memory, by
disabling the NVM safety interlock, whenever a write or
erase address falls within a specified range. It does not
override General Segment protection controlled by the
GCP or GWRP bits. For example, if GCP and GWRP
are enabled, enabling segmented code protection for
the bottom half of program memory does not undo
General Segment protection for the top half.
The size and type of protection for the segmented code
range are configured by the WPFPx, WPEND, WPCFG
and WPDIS bits in Configuration Word 3. Code segment protection is enabled by programming the WPDIS
bit (= 0). The WPFP bits specify the size of the segment
to be protected by specifying the 512-word code page
that is the start or end of the protected segment. The
specified region is inclusive, therefore, this page will
also be protected.
A separate bit, WPCFG, is used to independently protect
the last page of program space, including the Flash Configuration Words. Programming WPCFG (= 0) protects
the last page, regardless of the other bit settings. This
may be useful in circumstances where write protection is
needed for both a code segment in the bottom of
memory, as well as the Flash Configuration Words.
The various options for segment code protection are
shown in Table 26-2.
26.5.3
CONFIGURATION REGISTER
PROTECTION
The Configuration registers are protected against
inadvertent or unwanted changes, or reads in two
ways. The primary protection method is the same as
that of the RP registers – shadow registers contain a
complimentary value which is constantly compared
with the actual value.
To safeguard against unpredictable events, Configuration bit changes resulting from individual cell level
disruptions (such as ESD events) will cause a parity
error and trigger a device Reset.
The data for the Configuration registers is derived from
the Flash Configuration Words in program memory.
When the GCP bit is set, the source data for device
configuration is also protected as a consequence. Even
if General Segment protection is not enabled, the
device configuration can be protected by using the
appropriate code cement protection setting.
The WPEND bit determines if the protected segment
uses the top or bottom of the program space as a
boundary. Programming WPEND (= 0) sets the bottom
of program memory (000000h) as the lower boundary
of the protected segment. Leaving WPEND unprogrammed (= 1) protects the specified page through the
last page of implemented program memory, including
the Configuration Word locations.
TABLE 26-2:
SEGMENT CODE PROTECTION CONFIGURATION OPTIONS
Segment Configuration Bits
Write/Erase Protection of Code Segment
WPDIS
WPEND
WPCFG
1
x
1
No additional protection enabled; all program memory protection is configured
by GCP and GWRP
1
x
0
Last code page protected, including Flash Configuration Words
0
1
0
Addresses from the first address of code page, defined by WPFP through
the end of implemented program memory (inclusive), are protected, including
Flash Configuration Words
0
0
0
Address, 000000h, through the last address of code page, defined by
WPFP (inclusive) is protected
0
1
1
Addresses from first address of code page, defined by WPFP through the
end of implemented program memory (inclusive), are protected, including Flash
Configuration Words
0
0
1
Addresses from first address of code page, defined by WPFP through the
end of implemented program memory (inclusive), are protected
DS39940D-page 290
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
26.6
JTAG Interface
PIC24FJ64GB004 family devices implement a JTAG
interface, which supports boundary scan device
testing.
26.7
In-Circuit Serial Programming
PIC24FJ64GB004 family microcontrollers can be serially programmed while in the end application circuit.
This is simply done with two lines for clock (PGECx)
and data (PGEDx), and three other lines for power,
ground and the programming voltage. This allows customers to manufacture boards with unprogrammed
devices and then program the microcontroller just
before shipping the product. This also allows the most
recent firmware or a custom firmware to be
programmed.
2010 Microchip Technology Inc.
26.8
In-Circuit Debugger
When MPLAB® ICD 2 is selected as a debugger, the
in-circuit debugging functionality is enabled. This function allows simple debugging functions when used with
MPLAB IDE. Debugging functionality is controlled
through the PGECx (Emulation/Debug Clock) and
PGEDx (Emulation/Debug Data) pins.
To use the in-circuit debugger function of the device,
the design must implement ICSP connections to
MCLR, VDD, VSS and the PGECx/PGEDx pin pair designated by the ICS Configuration bits. In addition, when
the feature is enabled, some of the resources are not
available for general use. These resources include the
first 80 bytes of data RAM and two I/O pins.
DS39940D-page 291
PIC24FJ64GB004 FAMILY
NOTES:
DS39940D-page 292
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
27.0
DEVELOPMENT SUPPORT
The PIC® microcontrollers and dsPIC® digital signal
controllers are supported with a full range of software
and hardware development tools:
• Integrated Development Environment
- MPLAB® IDE Software
• Compilers/Assemblers/Linkers
- MPLAB C Compiler for Various Device
Families
- HI-TECH C for Various Device Families
- MPASMTM Assembler
- MPLINKTM Object Linker/
MPLIBTM Object Librarian
- MPLAB Assembler/Linker/Librarian for
Various Device Families
• Simulators
- MPLAB SIM Software Simulator
• Emulators
- MPLAB REAL ICE™ In-Circuit Emulator
• In-Circuit Debuggers
- MPLAB ICD 3
- PICkit™ 3 Debug Express
• Device Programmers
- PICkit™ 2 Programmer
- MPLAB PM3 Device Programmer
• Low-Cost Demonstration/Development Boards,
Evaluation Kits, and Starter Kits
27.1
MPLAB Integrated Development
Environment Software
The MPLAB IDE software brings an ease of software
development previously unseen in the 8/16/32-bit
microcontroller market. The MPLAB IDE is a Windows®
operating system-based application that contains:
• A single graphical interface to all debugging tools
- Simulator
- Programmer (sold separately)
- In-Circuit Emulator (sold separately)
- In-Circuit Debugger (sold separately)
• A full-featured editor with color-coded context
• A multiple project manager
• Customizable data windows with direct edit of
contents
• High-level source code debugging
• Mouse over variable inspection
• Drag and drop variables from source to watch
windows
• Extensive on-line help
• Integration of select third party tools, such as
IAR C Compilers
The MPLAB IDE allows you to:
• Edit your source files (either C or assembly)
• One-touch compile or assemble, and download to
emulator and simulator tools (automatically
updates all project information)
• Debug using:
- Source files (C or assembly)
- Mixed C and assembly
- Machine code
MPLAB IDE supports multiple debugging tools in a
single development paradigm, from the cost-effective
simulators, through low-cost in-circuit debuggers, to
full-featured emulators. This eliminates the learning
curve when upgrading to tools with increased flexibility
and power.
2010 Microchip Technology Inc.
DS39940D-page 293
PIC24FJ64GB004 FAMILY
27.2
MPLAB C Compilers for Various
Device Families
The MPLAB C Compiler code development systems
are complete ANSI C compilers for Microchip’s PIC18,
PIC24 and PIC32 families of microcontrollers and the
dsPIC30 and dsPIC33 families of digital signal controllers. These compilers provide powerful integration
capabilities, superior code optimization and ease of
use.
For easy source level debugging, the compilers provide
symbol information that is optimized to the MPLAB IDE
debugger.
27.3
HI-TECH C for Various Device
Families
The HI-TECH C Compiler code development systems
are complete ANSI C compilers for Microchip’s PIC
family of microcontrollers and the dsPIC family of digital
signal controllers. These compilers provide powerful
integration capabilities, omniscient code generation
and ease of use.
For easy source level debugging, the compilers provide
symbol information that is optimized to the MPLAB IDE
debugger.
The compilers include a macro assembler, linker, preprocessor, and one-step driver, and can run on multiple
platforms.
27.4
MPASM Assembler
The MPASM Assembler is a full-featured, universal
macro assembler for PIC10/12/16/18 MCUs.
The MPASM Assembler generates relocatable object
files for the MPLINK Object Linker, Intel® standard HEX
files, MAP files to detail memory usage and symbol
reference, absolute LST files that contain source lines
and generated machine code and COFF files for
debugging.
The MPASM Assembler features include:
27.5
MPLINK Object Linker/
MPLIB Object Librarian
The MPLINK Object Linker combines relocatable
objects created by the MPASM Assembler and the
MPLAB C18 C Compiler. It can link relocatable objects
from precompiled libraries, using directives from a
linker script.
The MPLIB Object Librarian manages the creation and
modification of library files of precompiled code. When
a routine from a library is called from a source file, only
the modules that contain that routine will be linked in
with the application. This allows large libraries to be
used efficiently in many different applications.
The object linker/library features include:
• Efficient linking of single libraries instead of many
smaller files
• Enhanced code maintainability by grouping
related modules together
• Flexible creation of libraries with easy module
listing, replacement, deletion and extraction
27.6
MPLAB Assembler, Linker and
Librarian for Various Device
Families
MPLAB Assembler produces relocatable machine
code from symbolic assembly language for PIC24,
PIC32 and dsPIC devices. MPLAB C Compiler uses
the assembler to produce its object file. The assembler
generates relocatable object files that can then be
archived or linked with other relocatable object files and
archives to create an executable file. Notable features
of the assembler include:
•
•
•
•
•
•
Support for the entire device instruction set
Support for fixed-point and floating-point data
Command line interface
Rich directive set
Flexible macro language
MPLAB IDE compatibility
• Integration into MPLAB IDE projects
• User-defined macros to streamline
assembly code
• Conditional assembly for multi-purpose
source files
• Directives that allow complete control over the
assembly process
DS39940D-page 294
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
27.7
MPLAB SIM Software Simulator
The MPLAB SIM Software Simulator allows code
development in a PC-hosted environment by simulating the PIC MCUs and dsPIC® DSCs on an instruction
level. On any given instruction, the data areas can be
examined or modified and stimuli can be applied from
a comprehensive stimulus controller. Registers can be
logged to files for further run-time analysis. The trace
buffer and logic analyzer display extend the power of
the simulator to record and track program execution,
actions on I/O, most peripherals and internal registers.
The MPLAB SIM Software Simulator fully supports
symbolic debugging using the MPLAB C Compilers,
and the MPASM and MPLAB Assemblers. The software simulator offers the flexibility to develop and
debug code outside of the hardware laboratory environment, making it an excellent, economical software
development tool.
27.8
MPLAB REAL ICE In-Circuit
Emulator System
MPLAB REAL ICE In-Circuit Emulator System is
Microchip’s next generation high-speed emulator for
Microchip Flash DSC and MCU devices. It debugs and
programs PIC® Flash MCUs and dsPIC® Flash DSCs
with the easy-to-use, powerful graphical user interface of
the MPLAB Integrated Development Environment (IDE),
included with each kit.
The emulator is connected to the design engineer’s PC
using a high-speed USB 2.0 interface and is connected
to the target with either a connector compatible with incircuit debugger systems (RJ-11) or with the new highspeed, noise tolerant, Low-Voltage Differential Signal
(LVDS) interconnection (CAT5).
The emulator is field upgradable through future firmware
downloads in MPLAB IDE. In upcoming releases of
MPLAB IDE, new devices will be supported, and new
features will be added. MPLAB REAL ICE offers significant advantages over competitive emulators including
low-cost, full-speed emulation, run-time variable
watches, trace analysis, complex breakpoints, a ruggedized probe interface and long (up to three meters) interconnection cables.
2010 Microchip Technology Inc.
27.9
MPLAB ICD 3 In-Circuit Debugger
System
MPLAB ICD 3 In-Circuit Debugger System is Microchip's most cost effective high-speed hardware
debugger/programmer for Microchip Flash Digital Signal Controller (DSC) and microcontroller (MCU)
devices. It debugs and programs PIC® Flash microcontrollers and dsPIC® DSCs with the powerful, yet easyto-use graphical user interface of MPLAB Integrated
Development Environment (IDE).
The MPLAB ICD 3 In-Circuit Debugger probe is connected to the design engineer's PC using a high-speed
USB 2.0 interface and is connected to the target with a
connector compatible with the MPLAB ICD 2 or MPLAB
REAL ICE systems (RJ-11). MPLAB ICD 3 supports all
MPLAB ICD 2 headers.
27.10 PICkit 3 In-Circuit Debugger/
Programmer and
PICkit 3 Debug Express
The MPLAB PICkit 3 allows debugging and programming of PIC® and dsPIC® Flash microcontrollers at a
most affordable price point using the powerful graphical
user interface of the MPLAB Integrated Development
Environment (IDE). The MPLAB PICkit 3 is connected
to the design engineer's PC using a full speed USB
interface and can be connected to the target via an
Microchip debug (RJ-11) connector (compatible with
MPLAB ICD 3 and MPLAB REAL ICE). The connector
uses two device I/O pins and the reset line to implement in-circuit debugging and In-Circuit Serial Programming™.
The PICkit 3 Debug Express include the PICkit 3, demo
board and microcontroller, hookup cables and CDROM
with user’s guide, lessons, tutorial, compiler and
MPLAB IDE software.
DS39940D-page 295
PIC24FJ64GB004 FAMILY
27.11 PICkit 2 Development
Programmer/Debugger and
PICkit 2 Debug Express
27.13 Demonstration/Development
Boards, Evaluation Kits, and
Starter Kits
The PICkit™ 2 Development Programmer/Debugger is
a low-cost development tool with an easy to use interface for programming and debugging Microchip’s Flash
families of microcontrollers. The full featured
Windows® programming interface supports baseline
(PIC10F,
PIC12F5xx,
PIC16F5xx),
midrange
(PIC12F6xx, PIC16F), PIC18F, PIC24, dsPIC30,
dsPIC33, and PIC32 families of 8-bit, 16-bit, and 32-bit
microcontrollers, and many Microchip Serial EEPROM
products. With Microchip’s powerful MPLAB Integrated
Development Environment (IDE) the PICkit™ 2
enables in-circuit debugging on most PIC® microcontrollers. In-Circuit-Debugging runs, halts and single
steps the program while the PIC microcontroller is
embedded in the application. When halted at a breakpoint, the file registers can be examined and modified.
A wide variety of demonstration, development and
evaluation boards for various PIC MCUs and dsPIC
DSCs allows quick application development on fully functional systems. Most boards include prototyping areas for
adding custom circuitry and provide application firmware
and source code for examination and modification.
The PICkit 2 Debug Express include the PICkit 2, demo
board and microcontroller, hookup cables and CDROM
with user’s guide, lessons, tutorial, compiler and
MPLAB IDE software.
27.12 MPLAB PM3 Device Programmer
The MPLAB PM3 Device Programmer is a universal,
CE compliant device programmer with programmable
voltage verification at VDDMIN and VDDMAX for
maximum reliability. It features a large LCD display
(128 x 64) for menus and error messages and a modular, detachable socket assembly to support various
package types. The ICSP™ cable assembly is included
as a standard item. In Stand-Alone mode, the MPLAB
PM3 Device Programmer can read, verify and program
PIC devices without a PC connection. It can also set
code protection in this mode. The MPLAB PM3
connects to the host PC via an RS-232 or USB cable.
The MPLAB PM3 has high-speed communications and
optimized algorithms for quick programming of large
memory devices and incorporates an MMC card for file
storage and data applications.
DS39940D-page 296
The boards support a variety of features, including LEDs,
temperature sensors, switches, speakers, RS-232
interfaces, LCD displays, potentiometers and additional
EEPROM memory.
The demonstration and development boards can be
used in teaching environments, for prototyping custom
circuits and for learning about various microcontroller
applications.
In addition to the PICDEM™ and dsPICDEM™ demonstration/development board series of circuits, Microchip
has a line of evaluation kits and demonstration software
for analog filter design, KEELOQ® security ICs, CAN,
IrDA®, PowerSmart battery management, SEEVAL®
evaluation system, Sigma-Delta ADC, flow rate
sensing, plus many more.
Also available are starter kits that contain everything
needed to experience the specified device. This usually
includes a single application and debug capability, all
on one board.
Check the Microchip web page (www.microchip.com)
for the complete list of demonstration, development
and evaluation kits.
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
28.0
Note:
INSTRUCTION SET SUMMARY
This chapter is a brief summary of the
PIC24F instruction set architecture, and is
not intended to be a comprehensive
reference source.
The PIC24F instruction set adds many enhancements
to the previous PIC® MCU instruction sets, while maintaining an easy migration from previous PIC MCU
instruction sets. Most instructions are a single program
memory word. Only three instructions require two
program memory locations.
Each single-word instruction is a 24-bit word divided
into an 8-bit opcode, which specifies the instruction
type and one or more operands, which further specify
the operation of the instruction. The instruction set is
highly orthogonal and is grouped into four basic
categories:
•
•
•
•
Word or byte-oriented operations
Bit-oriented operations
Literal operations
Control operations
• A literal value to be loaded into a W register or file
register (specified by the value of ‘k’)
• The W register or file register where the literal
value is to be loaded (specified by ‘Wb’ or ‘f’)
However, literal instructions that involve arithmetic or
logical operations use some of the following operands:
• The first source operand, which is a register ‘Wb’
without any address modifier
• The second source operand, which is a literal
value
• The destination of the result (only if not the same
as the first source operand), which is typically a
register ‘Wd’ with or without an address modifier
The control instructions may use some of the following
operands:
• A program memory address
• The mode of the table read and table write
instructions
Table 28-1 shows the general symbols used in
describing the instructions. The PIC24F instruction set
summary in Table 28-2 lists all of the instructions, along
with the status flags affected by each instruction.
Most word or byte-oriented W register instructions
(including barrel shift instructions) have three
operands:
• The first source operand, which is typically a
register ‘Wb’ without any address modifier
• The second source operand, which is typically a
register ‘Ws’ with or without an address modifier
• The destination of the result, which is typically a
register ‘Wd’ with or without an address modifier
However, word or byte-oriented file register instructions
have two operands:
• The file register specified by the value, ‘f’
• The destination, which could either be the file
register, ‘f’, or the W0 register, which is denoted
as ‘WREG’
Most bit-oriented instructions (including
rotate/shift instructions) have two operands:
The literal instructions that involve data movement may
use some of the following operands:
simple
All instructions are a single word, except for certain
double-word instructions, which were made
double-word instructions so that all the required information is available in these 48 bits. In the second word,
the 8 MSbs are ‘0’s. If this second word is executed as
an instruction (by itself), it will execute as a NOP.
Most single-word instructions are executed in a single
instruction cycle, unless a conditional test is true or the
program counter is changed as a result of the instruction. In these cases, the execution takes two instruction
cycles, with the additional instruction cycle(s) executed
as a NOP. Notable exceptions are the BRA (unconditional/computed branch), indirect CALL/GOTO, all table
reads and writes, and RETURN/RETFIE instructions,
which are single-word instructions but take two or three
cycles.
Certain instructions that involve skipping over the subsequent instruction require either two or three cycles if
the skip is performed, depending on whether the
instruction being skipped is a single-word or two-word
instruction. Moreover, double-word moves require two
cycles. The double-word instructions execute in two
instruction cycles.
• The W register (with or without an address
modifier) or file register (specified by the value of
‘Ws’ or ‘f’)
• The bit in the W register or file register (specified
by a literal value or indirectly by the contents of
register, ‘Wb’)
2010 Microchip Technology Inc.
DS39940D-page 297
PIC24FJ64GB004 FAMILY
TABLE 28-1:
SYMBOLS USED IN OPCODE DESCRIPTIONS
Field
Description
#text
Means literal defined by “text”
(text)
Means “content of text”
[text]
Means “the location addressed by text”
{ }
Optional field or operation
Register bit field
.b
Byte mode selection
.d
Double-Word mode selection
.S
Shadow register select
.w
Word mode selection (default)
bit4
4-bit bit selection field (used in word addressed instructions) {0...15}
C, DC, N, OV, Z
MCU Status bits: Carry, Digit Carry, Negative, Overflow, Sticky Zero
Expr
Absolute address, label or expression (resolved by the linker)
f
File register address {0000h...1FFFh}
lit1
1-bit unsigned literal {0,1}
lit4
4-bit unsigned literal {0...15}
lit5
5-bit unsigned literal {0...31}
lit8
8-bit unsigned literal {0...255}
lit10
10-bit unsigned literal {0...255} for Byte mode, {0:1023} for Word mode
lit14
14-bit unsigned literal {0...16383}
lit16
16-bit unsigned literal {0...65535}
lit23
23-bit unsigned literal {0...8388607}; LSB must be ‘0’
None
Field does not require an entry, may be blank
PC
Program Counter
Slit10
10-bit signed literal {-512...511}
Slit16
16-bit signed literal {-32768...32767}
Slit6
6-bit signed literal {-16...16}
Wb
Base W register {W0..W15}
Wd
Destination W register { Wd, [Wd], [Wd++], [Wd--], [++Wd], [--Wd] }
Wdo
Destination W register
{ Wnd, [Wnd], [Wnd++], [Wnd--], [++Wnd], [--Wnd], [Wnd+Wb] }
Wm,Wn
Dividend, Divisor working register pair (direct addressing)
Wn
One of 16 working registers {W0..W15}
Wnd
One of 16 destination working registers {W0..W15}
Wns
One of 16 source working registers {W0..W15}
WREG
W0 (working register used in file register instructions)
Ws
Source W register { Ws, [Ws], [Ws++], [Ws--], [++Ws], [--Ws] }
Wso
Source W register { Wns, [Wns], [Wns++], [Wns--], [++Wns], [--Wns], [Wns+Wb] }
DS39940D-page 298
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
TABLE 28-2:
INSTRUCTION SET OVERVIEW
Assembly
Mnemonic
ADD
ADDC
AND
ASR
BCLR
BRA
BSET
BSW
BTG
BTSC
Assembly Syntax
Description
# of
Words
# of
Cycles
Status Flags
Affected
ADD
f
f = f + WREG
1
1
C, DC, N, OV, Z
ADD
f,WREG
WREG = f + WREG
1
1
C, DC, N, OV, Z
ADD
#lit10,Wn
Wd = lit10 + Wd
1
1
C, DC, N, OV, Z
ADD
Wb,Ws,Wd
Wd = Wb + Ws
1
1
C, DC, N, OV, Z
ADD
Wb,#lit5,Wd
Wd = Wb + lit5
1
1
C, DC, N, OV, Z
ADDC
f
f = f + WREG + (C)
1
1
C, DC, N, OV, Z
ADDC
f,WREG
WREG = f + WREG + (C)
1
1
C, DC, N, OV, Z
ADDC
#lit10,Wn
Wd = lit10 + Wd + (C)
1
1
C, DC, N, OV, Z
ADDC
Wb,Ws,Wd
Wd = Wb + Ws + (C)
1
1
C, DC, N, OV, Z
ADDC
Wb,#lit5,Wd
Wd = Wb + lit5 + (C)
1
1
C, DC, N, OV, Z
AND
f
f = f .AND. WREG
1
1
N, Z
AND
f,WREG
WREG = f .AND. WREG
1
1
N, Z
AND
#lit10,Wn
Wd = lit10 .AND. Wd
1
1
N, Z
AND
Wb,Ws,Wd
Wd = Wb .AND. Ws
1
1
N, Z
AND
Wb,#lit5,Wd
Wd = Wb .AND. lit5
1
1
N, Z
ASR
f
f = Arithmetic Right Shift f
1
1
C, N, OV, Z
ASR
f,WREG
WREG = Arithmetic Right Shift f
1
1
C, N, OV, Z
ASR
Ws,Wd
Wd = Arithmetic Right Shift Ws
1
1
C, N, OV, Z
ASR
Wb,Wns,Wnd
Wnd = Arithmetic Right Shift Wb by Wns
1
1
N, Z
ASR
Wb,#lit5,Wnd
Wnd = Arithmetic Right Shift Wb by lit5
1
1
N, Z
BCLR
f,#bit4
Bit Clear f
1
1
None
BCLR
Ws,#bit4
Bit Clear Ws
1
1
None
BRA
C,Expr
Branch if Carry
1
1 (2)
None
BRA
GE,Expr
Branch if Greater than or Equal
1
1 (2)
None
BRA
GEU,Expr
Branch if Unsigned Greater than or Equal
1
1 (2)
None
BRA
GT,Expr
Branch if Greater than
1
1 (2)
None
BRA
GTU,Expr
Branch if Unsigned Greater than
1
1 (2)
None
BRA
LE,Expr
Branch if Less than or Equal
1
1 (2)
None
BRA
LEU,Expr
Branch if Unsigned Less than or Equal
1
1 (2)
None
BRA
LT,Expr
Branch if Less than
1
1 (2)
None
BRA
LTU,Expr
Branch if Unsigned Less than
1
1 (2)
None
BRA
N,Expr
Branch if Negative
1
1 (2)
None
BRA
NC,Expr
Branch if Not Carry
1
1 (2)
None
BRA
NN,Expr
Branch if Not Negative
1
1 (2)
None
BRA
NOV,Expr
Branch if Not Overflow
1
1 (2)
None
BRA
NZ,Expr
Branch if Not Zero
1
1 (2)
None
BRA
OV,Expr
Branch if Overflow
1
1 (2)
None
BRA
Expr
Branch Unconditionally
1
2
None
BRA
Z,Expr
Branch if Zero
1
1 (2)
None
BRA
Wn
Computed Branch
1
2
None
BSET
f,#bit4
Bit Set f
1
1
None
BSET
Ws,#bit4
Bit Set Ws
1
1
None
BSW.C
Ws,Wb
Write C bit to Ws
1
1
None
BSW.Z
Ws,Wb
Write Z bit to Ws
1
1
None
BTG
f,#bit4
Bit Toggle f
1
1
None
BTG
Ws,#bit4
Bit Toggle Ws
1
1
None
BTSC
f,#bit4
Bit Test f, Skip if Clear
1
1
None
(2 or 3)
BTSC
Ws,#bit4
Bit Test Ws, Skip if Clear
1
1
None
(2 or 3)
2010 Microchip Technology Inc.
DS39940D-page 299
PIC24FJ64GB004 FAMILY
TABLE 28-2:
INSTRUCTION SET OVERVIEW (CONTINUED)
Assembly
Mnemonic
BTSS
BTST
BTSTS
Assembly Syntax
Description
# of
Words
# of
Cycles
Status Flags
Affected
BTSS
f,#bit4
Bit Test f, Skip if Set
1
1
None
(2 or 3)
BTSS
Ws,#bit4
Bit Test Ws, Skip if Set
1
1
None
(2 or 3)
BTST
f,#bit4
Bit Test f
1
1
Z
BTST.C
Ws,#bit4
Bit Test Ws to C
1
1
C
BTST.Z
Ws,#bit4
Bit Test Ws to Z
1
1
Z
BTST.C
Ws,Wb
Bit Test Ws to C
1
1
C
Z
BTST.Z
Ws,Wb
Bit Test Ws to Z
1
1
BTSTS
f,#bit4
Bit Test then Set f
1
1
Z
BTSTS.C
Ws,#bit4
Bit Test Ws to C, then Set
1
1
C
BTSTS.Z
Ws,#bit4
Bit Test Ws to Z, then Set
1
1
Z
CALL
CALL
lit23
Call Subroutine
2
2
None
CALL
Wn
Call Indirect Subroutine
1
2
None
CLR
CLR
f
f = 0x0000
1
1
None
CLR
WREG
WREG = 0x0000
1
1
None
CLR
Ws
Ws = 0x0000
1
1
None
Clear Watchdog Timer
1
1
WDTO, Sleep
CLRWDT
CLRWDT
COM
COM
f
f=f
1
1
N, Z
COM
f,WREG
WREG = f
1
1
N, Z
COM
Ws,Wd
Wd = Ws
1
1
N, Z
CP
f
Compare f with WREG
1
1
C, DC, N, OV, Z
CP
Wb,#lit5
Compare Wb with lit5
1
1
C, DC, N, OV, Z
CP
Wb,Ws
Compare Wb with Ws (Wb – Ws)
1
1
C, DC, N, OV, Z
CP0
CP0
f
Compare f with 0x0000
1
1
C, DC, N, OV, Z
CP0
Ws
Compare Ws with 0x0000
1
1
C, DC, N, OV, Z
CPB
CPB
f
Compare f with WREG, with Borrow
1
1
C, DC, N, OV, Z
CPB
Wb,#lit5
Compare Wb with lit5, with Borrow
1
1
C, DC, N, OV, Z
CPB
Wb,Ws
Compare Wb with Ws, with Borrow
(Wb – Ws – C)
1
1
C, DC, N, OV, Z
CPSEQ
CPSEQ
Wb,Wn
Compare Wb with Wn, Skip if =
1
1
None
(2 or 3)
CPSGT
CPSGT
Wb,Wn
Compare Wb with Wn, Skip if >
1
1
None
(2 or 3)
CPSLT
CPSLT
Wb,Wn
Compare Wb with Wn, Skip if <
1
1
None
(2 or 3)
CPSNE
CPSNE
Wb,Wn
Compare Wb with Wn, Skip if
1
1
None
(2 or 3)
DAW
DAW.B
Wn
Wn = Decimal Adjust Wn
1
1
DEC
DEC
f
f=f–1
1
1
C, DC, N, OV, Z
DEC
f,WREG
WREG = f – 1
1
1
C, DC, N, OV, Z
CP
C
DEC
Ws,Wd
Wd = Ws – 1
1
1
C, DC, N, OV, Z
DEC2
f
f=f–2
1
1
C, DC, N, OV, Z
DEC2
f,WREG
WREG = f – 2
1
1
C, DC, N, OV, Z
DEC2
Ws,Wd
Wd = Ws – 2
1
1
C, DC, N, OV, Z
DISI
DISI
#lit14
Disable Interrupts for k Instruction Cycles
1
1
None
DIV
DIV.SW
Wm,Wn
Signed 16/16-bit Integer Divide
1
18
N, Z, C, OV
DIV.SD
Wm,Wn
Signed 32/16-bit Integer Divide
1
18
N, Z, C, OV
DIV.UW
Wm,Wn
Unsigned 16/16-bit Integer Divide
1
18
N, Z, C, OV
DIV.UD
Wm,Wn
Unsigned 32/16-bit Integer Divide
1
18
N, Z, C, OV
EXCH
EXCH
Wns,Wnd
Swap Wns with Wnd
1
1
None
FF1L
FF1L
Ws,Wnd
Find First One from Left (MSb) Side
1
1
C
FF1R
FF1R
Ws,Wnd
Find First One from Right (LSb) Side
1
1
C
DEC2
DS39940D-page 300
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
TABLE 28-2:
INSTRUCTION SET OVERVIEW (CONTINUED)
Assembly
Mnemonic
GOTO
INC
INC2
Assembly Syntax
Description
# of
Words
# of
Cycles
Status Flags
Affected
GOTO
Expr
Go to Address
2
2
None
GOTO
Wn
Go to Indirect
1
2
None
INC
f
f=f+1
1
1
C, DC, N, OV, Z
INC
f,WREG
WREG = f + 1
1
1
C, DC, N, OV, Z
C, DC, N, OV, Z
INC
Ws,Wd
Wd = Ws + 1
1
1
INC2
f
f=f+2
1
1
C, DC, N, OV, Z
INC2
f,WREG
WREG = f + 2
1
1
C, DC, N, OV, Z
C, DC, N, OV, Z
INC2
Ws,Wd
Wd = Ws + 2
1
1
IOR
f
f = f .IOR. WREG
1
1
N, Z
IOR
f,WREG
WREG = f .IOR. WREG
1
1
N, Z
IOR
#lit10,Wn
Wd = lit10 .IOR. Wd
1
1
N, Z
IOR
Wb,Ws,Wd
Wd = Wb .IOR. Ws
1
1
N, Z
IOR
Wb,#lit5,Wd
Wd = Wb .IOR. lit5
1
1
N, Z
LNK
LNK
#lit14
Link Frame Pointer
1
1
None
LSR
LSR
f
f = Logical Right Shift f
1
1
C, N, OV, Z
LSR
f,WREG
WREG = Logical Right Shift f
1
1
C, N, OV, Z
LSR
Ws,Wd
Wd = Logical Right Shift Ws
1
1
C, N, OV, Z
LSR
Wb,Wns,Wnd
Wnd = Logical Right Shift Wb by Wns
1
1
N, Z
LSR
Wb,#lit5,Wnd
Wnd = Logical Right Shift Wb by lit5
1
1
N, Z
MOV
f,Wn
Move f to Wn
1
1
None
MOV
[Wns+Slit10],Wnd
Move [Wns + Slit10] to Wnd
1
1
None
MOV
f
Move f to f
1
1
N, Z
MOV
f,WREG
Move f to WREG
1
1
N, Z
MOV
#lit16,Wn
Move 16-bit Literal to Wn
1
1
None
MOV.b
#lit8,Wn
Move 8-bit Literal to Wn
1
1
None
MOV
Wn,f
Move Wn to f
1
1
None
MOV
Wns,[Wns+Slit10]
Move Wns to [Wns + Slit10]
1
1
MOV
Wso,Wdo
Move Ws to Wd
1
1
None
MOV
WREG,f
Move WREG to f
1
1
N, Z
MOV.D
Wns,Wd
Move Double from W(ns):W(ns + 1) to Wd
1
2
None
MOV.D
Ws,Wnd
Move Double from Ws to W(nd + 1):W(nd)
1
2
None
MUL.SS
Wb,Ws,Wnd
{Wnd + 1, Wnd} = Signed(Wb) * Signed(Ws)
1
1
None
MUL.SU
Wb,Ws,Wnd
{Wnd + 1, Wnd} = Signed(Wb) * Unsigned(Ws)
1
1
None
MUL.US
Wb,Ws,Wnd
{Wnd + 1, Wnd} = Unsigned(Wb) * Signed(Ws)
1
1
None
MUL.UU
Wb,Ws,Wnd
{Wnd + 1, Wnd} = Unsigned(Wb) * Unsigned(Ws)
1
1
None
MUL.SU
Wb,#lit5,Wnd
{Wnd + 1, Wnd} = Signed(Wb) * Unsigned(lit5)
1
1
None
MUL.UU
Wb,#lit5,Wnd
{Wnd + 1, Wnd} = Unsigned(Wb) * Unsigned(lit5)
1
1
None
MUL
f
W3:W2 = f * WREG
1
1
None
NEG
f
f=f+1
1
1
C, DC, N, OV, Z
NEG
f,WREG
WREG = f + 1
1
1
C, DC, N, OV, Z
NEG
Ws,Wd
IOR
MOV
MUL
NEG
NOP
POP
Wd = Ws + 1
1
1
C, DC, N, OV, Z
NOP
No Operation
1
1
None
NOPR
No Operation
1
1
None
POP
f
Pop f from Top-of-Stack (TOS)
1
1
None
POP
Wdo
Pop from Top-of-Stack (TOS) to Wdo
1
1
None
POP.D
Wnd
Pop from Top-of-Stack (TOS) to W(nd):W(nd + 1)
1
2
None
Pop Shadow Registers
1
1
All
POP.S
PUSH
PUSH
f
Push f to Top-of-Stack (TOS)
1
1
None
PUSH
Wso
Push Wso to Top-of-Stack (TOS)
1
1
None
PUSH.D
Wns
Push W(ns):W(ns + 1) to Top-of-Stack (TOS)
1
2
None
Push Shadow Registers
1
1
None
PUSH.S
2010 Microchip Technology Inc.
DS39940D-page 301
PIC24FJ64GB004 FAMILY
TABLE 28-2:
INSTRUCTION SET OVERVIEW (CONTINUED)
Assembly
Mnemonic
Assembly Syntax
Description
# of
Words
# of
Cycles
Status Flags
Affected
PWRSAV
PWRSAV
#lit1
Go into Sleep or Idle mode
1
1
WDTO, Sleep
RCALL
RCALL
Expr
Relative Call
1
2
None
RCALL
Wn
Computed Call
1
2
None
REPEAT
REPEAT
#lit14
Repeat Next Instruction lit14 + 1 times
1
1
None
REPEAT
Wn
Repeat Next Instruction (Wn) + 1 times
1
1
None
RESET
RESET
Software Device Reset
1
1
None
RETFIE
RETFIE
Return from Interrupt
1
3 (2)
None
RETLW
RETLW
Return with Literal in Wn
1
3 (2)
None
RETURN
RETURN
Return from Subroutine
1
3 (2)
None
RLC
RLC
f
f = Rotate Left through Carry f
1
1
C, N, Z
RLC
f,WREG
WREG = Rotate Left through Carry f
1
1
C, N, Z
C, N, Z
RLNC
RRC
RRNC
#lit10,Wn
RLC
Ws,Wd
Wd = Rotate Left through Carry Ws
1
1
RLNC
f
f = Rotate Left (No Carry) f
1
1
N, Z
RLNC
f,WREG
WREG = Rotate Left (No Carry) f
1
1
N, Z
N, Z
RLNC
Ws,Wd
Wd = Rotate Left (No Carry) Ws
1
1
RRC
f
f = Rotate Right through Carry f
1
1
C, N, Z
RRC
f,WREG
WREG = Rotate Right through Carry f
1
1
C, N, Z
RRC
Ws,Wd
Wd = Rotate Right through Carry Ws
1
1
C, N, Z
RRNC
f
f = Rotate Right (No Carry) f
1
1
N, Z
RRNC
f,WREG
WREG = Rotate Right (No Carry) f
1
1
N, Z
RRNC
Ws,Wd
Wd = Rotate Right (No Carry) Ws
1
1
N, Z
SE
SE
Ws,Wnd
Wnd = Sign-Extended Ws
1
1
C, N, Z
SETM
SETM
f
f = FFFFh
1
1
None
SETM
WREG
WREG = FFFFh
1
1
None
SETM
Ws
Ws = FFFFh
1
1
None
SL
f
f = Left Shift f
1
1
C, N, OV, Z
SL
f,WREG
WREG = Left Shift f
1
1
C, N, OV, Z
SL
Ws,Wd
Wd = Left Shift Ws
1
1
C, N, OV, Z
SL
Wb,Wns,Wnd
Wnd = Left Shift Wb by Wns
1
1
N, Z
SL
Wb,#lit5,Wnd
Wnd = Left Shift Wb by lit5
1
1
N, Z
SUB
f
f = f – WREG
1
1
C, DC, N, OV, Z
SUB
f,WREG
WREG = f – WREG
1
1
C, DC, N, OV, Z
SUB
#lit10,Wn
Wn = Wn – lit10
1
1
C, DC, N, OV, Z
SUB
Wb,Ws,Wd
Wd = Wb – Ws
1
1
C, DC, N, OV, Z
SUB
Wb,#lit5,Wd
Wd = Wb – lit5
1
1
C, DC, N, OV, Z
SUBB
f
f = f – WREG – (C)
1
1
C, DC, N, OV, Z
SUBB
f,WREG
WREG = f – WREG – (C)
1
1
C, DC, N, OV, Z
SUBB
#lit10,Wn
Wn = Wn – lit10 – (C)
1
1
C, DC, N, OV, Z
SUBB
Wb,Ws,Wd
Wd = Wb – Ws – (C)
1
1
C, DC, N, OV, Z
SL
SUB
SUBB
SUBR
SUBBR
SWAP
SUBB
Wb,#lit5,Wd
Wd = Wb – lit5 – (C)
1
1
C, DC, N, OV, Z
SUBR
f
f = WREG – f
1
1
C, DC, N, OV, Z
SUBR
f,WREG
WREG = WREG – f
1
1
C, DC, N, OV, Z
SUBR
Wb,Ws,Wd
Wd = Ws – Wb
1
1
C, DC, N, OV, Z
C, DC, N, OV, Z
SUBR
Wb,#lit5,Wd
Wd = lit5 – Wb
1
1
SUBBR
f
f = WREG – f – (C)
1
1
C, DC, N, OV, Z
SUBBR
f,WREG
WREG = WREG – f – (C)
1
1
C, DC, N, OV, Z
SUBBR
Wb,Ws,Wd
Wd = Ws – Wb – (C)
1
1
C, DC, N, OV, Z
SUBBR
Wb,#lit5,Wd
Wd = lit5 – Wb – (C)
1
1
C, DC, N, OV, Z
SWAP.b
Wn
Wn = Nibble Swap Wn
1
1
None
SWAP
Wn
Wn = Byte Swap Wn
1
1
None
DS39940D-page 302
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
TABLE 28-2:
INSTRUCTION SET OVERVIEW (CONTINUED)
Assembly
Mnemonic
Assembly Syntax
Description
# of
Words
# of
Cycles
Status Flags
Affected
TBLRDH
TBLRDH
Ws,Wd
Read Prog to Wd
1
2
TBLRDL
TBLRDL
Ws,Wd
Read Prog to Wd
1
2
None
TBLWTH
TBLWTH
Ws,Wd
Write Ws to Prog
1
2
None
TBLWTL
TBLWTL
Ws,Wd
Write Ws to Prog
1
2
None
ULNK
ULNK
Unlink Frame Pointer
1
1
None
XOR
XOR
f
f = f .XOR. WREG
1
1
N, Z
XOR
f,WREG
WREG = f .XOR. WREG
1
1
N, Z
XOR
#lit10,Wn
Wd = lit10 .XOR. Wd
1
1
N, Z
XOR
Wb,Ws,Wd
Wd = Wb .XOR. Ws
1
1
N, Z
XOR
Wb,#lit5,Wd
Wd = Wb .XOR. lit5
1
1
N, Z
ZE
Ws,Wnd
Wnd = Zero-Extend Ws
1
1
C, Z, N
ZE
2010 Microchip Technology Inc.
None
DS39940D-page 303
PIC24FJ64GB004 FAMILY
NOTES:
DS39940D-page 304
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
29.0
ELECTRICAL CHARACTERISTICS
This section provides an overview of the PIC24FJ64GB004 family electrical characteristics. Additional information will
be provided in future revisions of this document as it becomes available.
Absolute maximum ratings for the PIC24FJ64GB004 family are listed below. Exposure to these maximum rating
conditions for extended periods may affect device reliability. Functional operation of the device at these, or any other
conditions above the parameters indicated in the operation listings of this specification, is not implied.
Absolute Maximum Ratings(†)
Ambient temperature under bias.............................................................................................................-40°C to +135°C
Storage temperature .............................................................................................................................. -65°C to +150°C
Voltage on VDD with respect to VSS ......................................................................................................... -0.3V to +4.0V
Voltage on any combined analog and digital pin, and MCLR, with respect to VSS ........................ -0.3V to (VDD + 0.3V)
Voltage on any digital only pin with respect to VSS .................................................................................. -0.3V to +6.0V
Voltage on VDDCORE with respect to VSS ................................................................................................. -0.3V to +3.0V
Maximum current out of VSS pin ...........................................................................................................................300 mA
Maximum current into VDD pin (Note 1)................................................................................................................250 mA
Maximum output current sunk by any I/O pin..........................................................................................................25 mA
Maximum output current sourced by any I/O pin ....................................................................................................25 mA
Maximum current sunk by all ports .......................................................................................................................200 mA
Maximum current sourced by all ports (Note 1)....................................................................................................200 mA
Note 1: Maximum allowable current is a function of device maximum power dissipation (see Table 29-1).
NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at those or any other conditions above those
indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for
extended periods may affect device reliability.
2010 Microchip Technology Inc.
DS39940D-page 305
PIC24FJ64GB004 FAMILY
29.1
DC Characteristics
FIGURE 29-1:
PIC24FJ64GB004 FAMILY VOLTAGE-FREQUENCY GRAPH (INDUSTRIAL)
3.00V
Voltage (VDDCORE)(1)
2.75V
2.75V
2.50V
PIC24FJ64GB004 Family
2.35V
2.35V
2.00V
16 MHz
Frequency
32 MHz
For frequencies between 16 MHz and 32 MHz, FMAX = (45.7 MHz/V) * (VDDCORE – 2V) + 16 MHz.
When the voltage regulator is disabled, VDD and VDDCORE must be maintained so that
VDDCOREVDD3.6V.
Note 1:
FIGURE 29-2:
PIC24FJ64GB004 FAMILY VOLTAGE-FREQUENCY GRAPH
(EXTENDED TEMPERATURE)
3.00V
Voltage
(VDDCORE)(1)
2.75V
2.50V
2.75V
PIC24FJ64GB004 Family
2.35V
2.25V
2.00V
16 MHz
24 MHz
Frequency
For frequencies between 16 MHz and 24 MHz, FMAX = (22.9 MHz/V) * (VDDCORE – 2V) + 16 MHz.
Note 1:
DS39940D-page 306
WHEN the voltage regulator is disabled, VDD and VDDCORE must be maintained so that
VDDCOREVDD3.6V.
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
TABLE 29-1:
THERMAL OPERATING CONDITIONS
Rating
Symbol
Min
Typ
Max
Unit
Operating Junction Temperature Range
TJ
-40
—
+140
°C
Operating Ambient Temperature Range
TA
-40
—
+125
°C
PIC24FJ64GB004 Family:
Power Dissipation:
Internal Chip Power Dissipation:
PINT = VDD x (IDD – IOH)
PD
PINT + PI/O
W
PDMAX
(TJ – TA)/JA
W
I/O Pin Power Dissipation:
PI/O = ({VDD – VOH} x IOH) + (VOL x IOL)
Maximum Allowed Power Dissipation
TABLE 29-2:
THERMAL PACKAGING CHARACTERISTICS
Characteristic
Package Thermal Resistance, 300 mil SOIC
Symbol
Typ
Max
Unit
Notes
JA
49
—
°C/W
(Note 1)
Package Thermal Resistance, 6x6x0.9 mm QFN
JA
33.7
—
°C/W
(Note 1)
Package Thermal Resistance, 8x8x1 mm QFN
JA
28
—
°C/W
(Note 1)
Package Thermal Resistance, 10x10x1 mm TQFP
JA
39.3
—
°C/W
(Note 1)
Note 1:
Junction to ambient thermal resistance; Theta-JA (JA) numbers are achieved by package simulations.
2010 Microchip Technology Inc.
DS39940D-page 307
PIC24FJ64GB004 FAMILY
TABLE 29-3:
DC CHARACTERISTICS: TEMPERATURE AND VOLTAGE SPECIFICATIONS
DC CHARACTERISTICS
Param
Symbol
No.
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature
-40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
Min
Typ(1)
Max
Units
VDD
2.2
—
3.6
V
Regulator enabled
VDD
VDDCORE
—
3.6
V
Regulator disabled
2.0
—
2.75
V
Regulator disabled
Characteristic
Conditions
Operating Voltage
DC10
Supply Voltage
VDDCORE
DC12
VDR
RAM Data Retention
Voltage(2)
1.5
—
—
V
DC16
VPOR
VDD Start Voltage
to Ensure Internal
Power-on Reset Signal
VSS
—
—
V
DC17
SVDD
VDD Rise Rate
to Ensure Internal
Power-on Reset Signal
0.05
—
—
V/ms
DC18
VBOR
Brown-out Reset
Voltage
—
2.05
—
V
Note 1:
2:
0-3.3V in 0.1s
0-2.5V in 60 ms
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
This is the limit to which VDD can be lowered without losing RAM data.
DS39940D-page 308
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
TABLE 29-4:
DC CHARACTERISTICS: OPERATING CURRENT (IDD)
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise
stated)
Operating temperature -40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
DC CHARACTERISTICS
Parameter
No.
Typical(1)
Max
Units
Conditions
Operating Current (IDD)(2)
DC21
0.24
0.395
mA
-40°C
DC21a
0.25
0.395
mA
+25°C
DC21b
0.25
0.395
mA
+85°C
DC21f
0.3
0.395
mA
+125C
DC21c
0.44
0.78
mA
-40°C
DC21d
0.41
0.78
mA
+25°C
DC21e
0.41
0.78
mA
+85°C
DC21g
0.6
0.78
mA
+125C
DC20
0.5
0.75
mA
-40°C
DC20a
0.5
0.75
mA
+25°C
DC20b
0.5
0.75
mA
+85°C
DC20c
0.6
0.75
mA
+125C
DC20d
0.75
1.4
mA
-40°C
DC20e
0.75
1.4
mA
+25°C
DC20f
0.75
1.4
mA
+85°C
DC20g
1.0
1.4
mA
+125C
DC23
2.0
3.0
mA
-40°C
DC23a
2.0
3.0
mA
+25°C
DC23b
2.0
3.0
mA
+85°C
DC23c
2.4
3.0
mA
+125C
DC23d
2.9
4.2
mA
-40°C
DC23e
2.9
4.2
mA
+25°C
DC23f
2.9
4.2
mA
+85°C
DC23g
3.5
4.2
mA
+125C
Note 1:
2:
3:
4:
2.0V(3)
0.5 MIPS
3.3V(4)
2.0V(3)
1 MIPS
3.3V(4)
2.0V(3)
4 MIPS
3.3V(4)
Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance
only and are not tested.
The supply current is mainly a function of the operating voltage and frequency. Other factors, such as I/O pin
loading and switching rate, oscillator type, internal code execution pattern and temperature, also have an
impact on the current consumption. The test conditions for all IDD measurements are as follows: OSCI driven
with external square wave from rail to rail. All I/O pins are configured as inputs and pulled to VDD.
MCLR = VDD; WDT and FSCM are disabled. CPU, SRAM, program memory and data memory are
operational. No peripheral modules are operating and all of the Peripheral Module Disable (PMD) bits are set.
On-chip voltage regulator disabled (DISVREG tied to VDD).
On-chip voltage regulator enabled (DISVREG tied to VSS). Low-Voltage Detect (LVD) and Brown-out
Detect (BOD) are enabled.
2010 Microchip Technology Inc.
DS39940D-page 309
PIC24FJ64GB004 FAMILY
TABLE 29-4:
DC CHARACTERISTICS: OPERATING CURRENT (IDD) (CONTINUED)
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise
stated)
Operating temperature -40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
DC CHARACTERISTICS
Parameter
No.
Typical(1)
Max
Units
Conditions
Operating Current (IDD)(2)
DC24
10.5
15.5
mA
-40°C
DC24a
10.5
15.5
mA
+25°C
DC24b
10.5
15.5
mA
+85°C
DC24c
11.3
15.5
mA
+125C
DC24d
11.3
15.5
mA
-40°C
DC24e
11.3
15.5
mA
+25°C
DC24f
11.3
15.5
mA
+85°C
DC24g
11.3
15.5
mA
+125C
DC31
15.0
18.0
A
-40°C
DC31a
15.0
19.0
A
+25°C
DC31b
20.0
36.0
A
+85°C
DC31c
42.0
55.0
A
+125C
DC31d
57.0
120.0
A
-40°C
DC31e
57.0
125.0
A
+25°C
DC31f
95.0
160.0
A
+85°C
DC31g
114.0
180.0
A
+125C
Note 1:
2:
3:
4:
2.5V(3)
16 MIPS
3.3V(4)
2.0V(3)
LPRC (31 kHz)
3.3V(4)
Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance
only and are not tested.
The supply current is mainly a function of the operating voltage and frequency. Other factors, such as I/O pin
loading and switching rate, oscillator type, internal code execution pattern and temperature, also have an
impact on the current consumption. The test conditions for all IDD measurements are as follows: OSCI driven
with external square wave from rail to rail. All I/O pins are configured as inputs and pulled to VDD.
MCLR = VDD; WDT and FSCM are disabled. CPU, SRAM, program memory and data memory are
operational. No peripheral modules are operating and all of the Peripheral Module Disable (PMD) bits are set.
On-chip voltage regulator disabled (DISVREG tied to VDD).
On-chip voltage regulator enabled (DISVREG tied to VSS). Low-Voltage Detect (LVD) and Brown-out
Detect (BOD) are enabled.
DS39940D-page 310
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
TABLE 29-5:
DC CHARACTERISTICS: IDLE CURRENT (IIDLE)
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature -40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
DC CHARACTERISTICS
Parameter
No.
Typical(1)
Max
Units
Conditions
Idle Current (IIDLE)(2)
DC41
67
100
A
-40°C
DC41a
68
100
A
+25°C
DC41b
74
100
A
+85°C
DC41f
102
120
A
+125C
DC41c
166
265
A
-40°C
DC41d
167
265
A
+25°C
DC41e
177
265
A
+85°C
+125C
DC41g
225
285
A
DC40
125
180
A
-40°C
DC40a
125
180
A
+25°C
DC40b
125
180
A
+85°C
DC40c
167
200
A
+125C
DC40d
210
350
A
-40°C
DC40e
210
350
A
+25°C
DC40f
210
350
A
+85°C
+125C
DC40g
305
370
A
DC43
0.5
0.6
mA
-40°C
DC43a
0.5
0.6
mA
+25°C
DC43b
0.5
0.6
mA
+85°C
DC43c
0.54
0.62
mA
+125C
DC43d
0.75
0.95
mA
-40°C
DC43e
0.75
0.95
mA
+25°C
DC43f
0.75
0.95
mA
+85°C
DC43g
0.80
0.97
mA
+125C
DC47
2.6
3.3
mA
-40°C
DC47a
2.6
3.3
mA
+25°C
DC47b
2.6
3.3
mA
+85°C
DC47f
2.7
3.3
mA
+125C
DC47c
2.9
3.5
mA
-40°C
DC47d
2.9
3.5
mA
+25°C
DC47e
2.9
3.5
mA
+85°C
3.0
3.6
mA
+125C
DC47g
Note 1:
2:
3:
4:
2.0V(3)
0.5 MIPS
3.3V(4)
2.0V(3)
1 MIPS
3.3V(4)
2.0V(3)
4 MIPS
3.3V(4)
2.5V(3)
16 MIPS
3.3V(4)
Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only and
are not tested.
Base IIDLE current is measured with the core off, OSCI driven with external square wave from rail to rail. All I/O
pins are configured as inputs and pulled to VDD. MCLR = VDD; WDT and FSCM are disabled. No peripheral
modules are operating and all of the Peripheral Module Disable (PMD) bits are set.
On-chip voltage regulator disabled (DISVREG tied to VDD).
On-chip voltage regulator enabled (DISVREG tied to VSS). Low-Voltage Detect (LVD) and Brown-out Detect
(BOD) are enabled.
2010 Microchip Technology Inc.
DS39940D-page 311
PIC24FJ64GB004 FAMILY
TABLE 29-5:
DC CHARACTERISTICS: IDLE CURRENT (IIDLE) (CONTINUED)
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature -40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
DC CHARACTERISTICS
Parameter
No.
Typical(1)
Max
Units
Conditions
Idle Current (IIDLE)(2)
DC50
0.8
1.0
mA
-40°C
DC50a
0.8
1.0
mA
+25°C
DC50b
0.8
1.0
mA
+85°C
DC50c
0.9
1.1
mA
+125C
DC50d
1.1
1.3
mA
-40°C
DC50e
1.1
1.3
mA
+25°C
DC50f
1.1
1.3
mA
+85°C
DC50g
1.2
1.4
mA
+125C
DC51
2.4
8.0
A
-40°C
DC51a
2.2
8.0
A
+25°C
DC51b
7.2
21
A
+85°C
DC51c
35
50
A
+125C
DC51d
38
55
A
-40°C
DC51e
44
60
A
+25°C
DC51f
70
100
A
+85°C
96
150
A
+125C
DC51g
Note 1:
2:
3:
4:
2.0V(3)
FRC (4 MIPS)
3.3V(4)
2.0V(3)
LPRC (31 kHz)
3.3V(4)
Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only and
are not tested.
Base IIDLE current is measured with the core off, OSCI driven with external square wave from rail to rail. All I/O
pins are configured as inputs and pulled to VDD. MCLR = VDD; WDT and FSCM are disabled. No peripheral
modules are operating and all of the Peripheral Module Disable (PMD) bits are set.
On-chip voltage regulator disabled (DISVREG tied to VDD).
On-chip voltage regulator enabled (DISVREG tied to VSS). Low-Voltage Detect (LVD) and Brown-out Detect
(BOD) are enabled.
DS39940D-page 312
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
TABLE 29-6:
DC CHARACTERISTICS: POWER-DOWN BASE CURRENT (IPD)
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature -40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
DC CHARACTERISTICS
Parameter
No.
Typical(1)
Max
Units
1.0
A
Conditions
Power-Down Current (IPD)(2)
DC60
0.05
-40°C
DC60a
0.2
1.0
A
+25°C
DC60i
2.0
6.5
A
+60°C
DC60b
3.5
12
A
+85°C
DC60m
29.9
50
A
+125C
DC60c
0.1
1.0
A
-40°C
DC60d
0.4
1.0
A
+25°C
DC60j
2.5
15
A
+60°C
DC60e
4.2
25
A
+85°C
DC60n
36.2
75
A
+125C
DC60f
3.3
9.0
A
-40°C
DC60g
3.3
10
A
+25°C
DC60k
5.0
20
A
+60°C
DC60h
7.0
30
A
+85°C
DC60p
39.2
80
A
+125C
DC70c
0.003
0.2
A
-40°C
DC70d
0.02
0.2
A
+25°C
DC70j
0.2
0.35
A
+60°C
DC70e
0.51
1.5
A
+85°C
DC70a
6.1
12
A
+125C
DC70f
0.01
0.3
A
-40°C
DC70g
0.04
0.3
A
+25°C
DC70k
0.2
0.5
A
+60°C
DC70h
0.71
2.0
A
+85°C
DC70b
7.2
16
A
+125C
Note 1:
2:
3:
4:
5:
2.0V(3)
2.5V(3)
Base Power-Down Current(5)
3.3V(4)
2.5V(4)
Base Deep Sleep Current
3.3V(4)
Data in the Typical column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance
only and are not tested.
Base IPD is measured with the device in Sleep mode (all peripherals and clocks shut down). All I/Os are
configured as inputs and pulled high. WDT, etc., are all switched off, PMSLP bit is clear and the Peripheral
Module Disable (PMD) bits for all unused peripherals are set.
On-chip voltage regulator disabled (DISVREG tied to VDD).
On-chip voltage regulator enabled (DISVREG tied to VSS). Low-Voltage Detect (LVD) and Brown-out
Detect (BOD) are enabled.
The current is the additional current consumed when the module is enabled. This current should be
added to the base IPD current.
2010 Microchip Technology Inc.
DS39940D-page 313
PIC24FJ64GB004 FAMILY
TABLE 29-7:
DC CHARACTERISTICS: POWER-DOWN PERIPHERAL
MODULE CURRENT (IPD)
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature -40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
DC CHARACTERISTICS
Parameter
No.
Typical(1)
Max
Units
Conditions
Power-Down Current (IPD): PMD Bits are Set, PMSLP Bit is ‘0’(2)
DC61
0.2
0.7
A
-40°C
DC61a
0.2
0.7
A
+25°C
DC61i
0.2
0.7
A
+60°C
DC61b
0.23
0.7
A
+85°C
DC61m
0.3
1.0
A
+125C
DC61c
0.25
0.9
A
-40°C
DC61d
0.25
0.9
A
+25°C
DC61j
0.25
0.9
A
+60°C
DC61e
0.28
0.9
A
+85°C
DC61p
0.5
1.2
A
+125C
DC61f
0.6
1.5
A
-40°C
DC61g
0.6
1.5
A
+25°C
DC61k
0.6
1.5
A
+60°C
DC61h
0.8
1.5
A
+85°C
DC61n
1.0
1.7
A
+125C
DC62
0.5
1.0
A
-40°C
DC62a
0.5
1.0
A
+25°C
DC62i
0.5
1.0
A
+60°C
DC62b
0.5
1.3
A
+85°C
DC62m
0.6
1.6
A
+125C
DC62c
0.7
1.5
A
-40°C
DC62d
0.7
1.5
A
+25°C
DC62j
0.7
1.5
A
+60°C
DC62e
0.7
1.8
A
+85°C
DC62n
0.8
2.1
A
+125C
DC62f
1.5
2.0
A
-40°C
DC62g
1.5
2.0
A
+25°C
DC62k
1.5
2.0
A
+60°C
DC62h
1.5
2.5
A
+85°C
1.9
3.0
A
+125C
DC62p
Note 1:
2:
3:
4:
5:
2.0V(3)
2.5V(3)
31 kHz LPRC Oscillator with
RTCC, WDT, DSWDT or
Timer 1: ILPRC(5)
3.3V(4)
2.0V(3)
2.5V
(3)
Low drive strength, 32 kHz Crystal
with RTCC, DSWDT or
Timer1: ISOSC;
SOSCSEL = 01(5)
3.3V(4)
Data in the Typical column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance
only and are not tested.
Peripheral IPD deltas are measured with the device in Sleep mode (all peripherals and clocks shut down).
All I/Os are configured as inputs and pulled high. Only the peripheral or clock being measured is enabled.
PMSLP bit is clear and the Peripheral Module Disable bits (PMD) for all unused peripherals are set.
On-chip voltage regulator disabled (DISVREG tied to VDD).
On-chip voltage regulator enabled (DISVREG tied to VSS). Low-Voltage Detect (LVD) and Brown-out
Detect (BOD) are enabled.
The current is the additional current consumed when the module is enabled. This current should be
added to the base IPD current.
DS39940D-page 314
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
TABLE 29-7:
DC CHARACTERISTICS: POWER-DOWN PERIPHERAL
MODULE CURRENT (IPD) (CONTINUED)
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature -40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
DC CHARACTERISTICS
Parameter
No.
Typical(1)
Max
Units
Conditions
Power-Down Current (IPD): PMD Bits are Set, PMSLP Bit is ‘0’(2)
DC63
1.8
2.3
A
-40°C
DC63a
1.8
2.7
A
+25°C
DC63i
1.8
3.0
A
+60°C
DC63b
1.8
3.0
A
+85°C
DC63m
2.2
3.3
A
+125C
DC63c
2
2.7
A
-40°C
DC63d
2
2.9
A
+25°C
DC63j
2
3.2
A
+60°C
DC63e
2
3.5
A
+85°C
DC63n
2.5
3.8
A
+125C
DC63f
2.25
3.0
A
-40°C
DC63g
2.25
3.0
A
+25°C
DC63k
2.25
3.3
A
+60°C
DC63h
2.25
3.5
A
+85°C
DC63p
2.8
4.0
A
+125C
DC71c
0.001
0.25
A
-40°C
DC71d
0.03
0.25
A
+25°C
DC71j
0.05
0.60
A
+60°C
DC71e
0.08
2.0
A
+85°C
DC71a
3.9
10
A
+125C
DC71f
0.001
0.50
A
-40°C
DC71g
0.03
0.50
A
+25°C
DC71k
0.05
0.75
A
+60°C
DC71h
0.08
2.5
A
+85°C
3.9
12.5
A
+125C
DC71b
Note 1:
2:
3:
4:
5:
2.0V(3)
2.5V(3)
32 kHz Crystal with RTCC,
DSWDT or Timer1: ISOSC;
SOSCSEL = 11(5)
3.3V(4)
2.5V(4)
Deep Sleep BOR: IDSBOR(5)
3.3V(4)
Data in the Typical column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance
only and are not tested.
Peripheral IPD deltas are measured with the device in Sleep mode (all peripherals and clocks shut down).
All I/Os are configured as inputs and pulled high. Only the peripheral or clock being measured is enabled.
PMSLP bit is clear and the Peripheral Module Disable bits (PMD) for all unused peripherals are set.
On-chip voltage regulator disabled (DISVREG tied to VDD).
On-chip voltage regulator enabled (DISVREG tied to VSS). Low-Voltage Detect (LVD) and Brown-out
Detect (BOD) are enabled.
The current is the additional current consumed when the module is enabled. This current should be
added to the base IPD current.
2010 Microchip Technology Inc.
DS39940D-page 315
PIC24FJ64GB004 FAMILY
TABLE 29-8:
DC CHARACTERISTICS: I/O PIN INPUT SPECIFICATIONS
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise
stated)
Operating temperature
-40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
DC CHARACTERISTICS
Param
No.
Sym
VIL
Characteristic
Min
Typ(1)
Max
Units
VSS
—
0.2 VDD
V
Input Low Voltage(4)
DI10
I/O Pins with ST Buffer
DI11
I/O Pins with TTL Buffer
VSS
—
0.15 VDD
V
DI15
MCLR
VSS
—
0.2 VDD
V
DI16
OSC1 (XT mode)
VSS
—
0.2 VDD
V
DI17
OSC1 (HS mode)
VSS
—
0.2 VDD
V
DI18
I/O Pins with I2C™ Buffer:
VSS
—
0.3 VDD
V
I/O Pins with SMBus Buffer:
VSS
—
0.8
V
I/O Pins with ST Buffer:
with Analog Functions,
Digital Only
0.8 VDD
0.8 VDD
—
—
VDD
5.5
V
V
I/O Pins with TTL Buffer:
with Analog Functions,
Digital Only
0.25 VDD + 0.8
0.25 VDD + 0.8
—
—
VDD
5.5
V
V
DI19
VIH
DI20
DI21
MCLR
0.8 VDD
—
VDD
V
DI26
OSC1 (XT mode)
0.7 VDD
—
VDD
V
DI27
OSC1 (HS mode)
0.7 VDD
—
VDD
V
DI28
I/O Pins with I2C Buffer:
with Analog Functions,
Digital Only
0.7 VDD
0.7 VDD
—
—
VDD
5.5
V
V
VDD
5.5
V
V
I/O Pins with SMBus Buffer:
with Analog Functions,
Digital Only
DI30
ICNPU CNx Pull-up Current
IIL
SMBus enabled
Input High Voltage(4)
DI25
DI29
Conditions
Input Leakage
2.5V VPIN VDD
2.1
2.1
50
250
400
A
VDD = 3.3V, VPIN = VSS
Current(2,3)
DI50
I/O Ports
—
—
+50
nA
VSS VPIN VDD,
Pin at high-impedance
DI51
Analog Input Pins
—
—
+50
nA
VSS VPIN VDD,
Pin at high-impedance
DI52
USB Differential Pins
(D+, D-)
—
—
+50
nA
VUSB VDD
DI55
MCLR
—
—
+50
nA
VSS VPIN VDD
DI56
OSC1
—
—
+50
nA
VSS VPIN VDD,
XT and HS modes
Note 1:
2:
3:
4:
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
The leakage current on the MCLR pin is strongly dependent on the applied voltage level. The specified
levels represent normal operating conditions. Higher leakage current may be measured at different input
voltages.
Negative current is defined as current sourced by the pin.
Refer to Table 1-2 for I/O pins buffer types.
DS39940D-page 316
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
TABLE 29-9:
DC CHARACTERISTICS: I/O PIN OUTPUT SPECIFICATIONS
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature
-40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
DC CHARACTERISTICS
Param
No.
Sym
VOL
Characteristic
I/O Ports
DO16
I/O Ports
VOH
Note 1:
Max
Units
—
—
0.4
V
IOL = 8.5 mA, VDD = 3.6V
—
—
0.4
V
IOL = 5.0 mA, VDD = 2.0V
—
—
0.4
V
IOL = 8.0 mA, VDD = 3.6V, 125°C
—
—
0.4
V
IOL = 4.5 mA, VDD = 2.0V, 125°C
3.0
—
—
V
IOH = -3.0 mA, VDD = 3.6V
Conditions
Output High Voltage
I/O Ports
I/O Ports
DO26
Typ(1)
Output Low Voltage
DO10
DO20
Min
2.4
—
—
V
IOH = -6.0 mA, VDD = 3.6V
1.65
—
—
V
IOH = -1.0 mA, VDD = 2.0V
1.4
—
—
V
IOH = -3.0 mA, VDD = 2.0V
3.0
—
—
V
IOH = -2.5 mA, VDD = 3.6V, 125°C
1.65
—
—
V
IOH = -0.5 mA, VDD = 2.0V, 125°C
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
TABLE 29-10: DC CHARACTERISTICS: PROGRAM MEMORY
Standard Operating Conditions: 2.0V to 3.6V (unless
otherwise stated)
Operating temperature -40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
DC CHARACTERISTICS
Param
No.
Min
Typ(1)
Max
Units
10,000
—
—
E/W
VMIN
—
3.6
V
VDDCORE
2.25
—
3.6
V
VDD
2.35
—
3.6
V
—
3
—
ms
Sym
Characteristic
D130
EP
Cell Endurance
D131
VPR
VDD for Read
Conditions
-40C to +85C
VMIN = Minimum
operating voltage
VPEW Supply Voltage for Self-Timed
Writes
D132A
D132B
D133A
TIW
Self-Timed Write Cycle Time
D133B
TIE
Self-Timed Page Erase Time
40
—
—
ms
D134
TRETD Characteristic Retention
20
—
—
Year
D135
IDDP
—
7
—
mA
Note 1:
Supply Current during Programming
Provided no other
specifications are violated
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated.
2010 Microchip Technology Inc.
DS39940D-page 317
PIC24FJ64GB004 FAMILY
TABLE 29-11: COMPARATOR SPECIFICATIONS
Operating Conditions: 2.0V < VDD < 3.6V, -40°C < TA < +85°C (unless otherwise stated)
Param
No.
Symbol
Characteristic
Min
Typ
Max
Units
D300
VIOFF
Input Offset Voltage*
—
20
40
mV
D301
VICM
Input Common Mode Voltage*
0
—
VDD
V
D302
CMRR
Common Mode Rejection
Ratio*
55
—
—
dB
300
TRESP
Response Time*(1)
—
150
400
ns
301
TMC2OV
Comparator Mode Change to
Output Valid*
—
—
10
s
*
Note 1:
Comments
Parameters are characterized but not tested.
Response time measured with one comparator input at (VDD – 1.5)/2, while the other input transitions from
VSS to VDD.
TABLE 29-12: COMPARATOR VOLTAGE REFERENCE SPECIFICATIONS
Operating Conditions: 2.0V < VDD < 3.6V, -40°C < TA < +85°C (unless otherwise stated)
Param
No.
Symbol
Characteristic
Min
Typ
Max
Units
VDD/24
—
VDD/32
LSb
—
—
AVDD – 1.5
LSb
VRD310 CVRES
Resolution
VRD311 CVRAA
Absolute Accuracy
VRD312 CVRUR
Unit Resistor Value (R)
—
2k
—
VR310
Settling Time(1)
—
—
10
s
Note 1:
TSET
Comments
Settling time measured while CVRR = 1 and CVR bits transition from ‘0000’ to ‘1111’.
TABLE 29-13: INTERNAL VOLTAGE REGULATOR SPECIFICATIONS
Operating Conditions: -40°C < TA < +85°C (unless otherwise stated)
Param
Symbol
No.
Characteristics
Min
Typ
Max
Unit
s
VBG
Band Gap Reference Voltage
1.14
1.2
1.26
V
TBG
Band Gap Reference Start-up
Time
—
1
—
ms
VRGOUT
Regulator Output Voltage
2.35
2.5
2.75
V
CEFC
External Filter Capacitor Value
4.7
10
—
F
DS39940D-page 318
Comments
Series resistance < 3 Ohm
recommended;
< 5 Ohm required.
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
29.2
AC Characteristics and Timing Parameters
The information contained in this section defines the PIC24FJ64GB004 family AC characteristics and timing parameters.
TABLE 29-14: TEMPERATURE AND VOLTAGE SPECIFICATIONS – AC
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature -40°C TA +85°C for Industrial and
-40°C TA +125°C for Extended
Operating voltage VDD range as described in Section 29.1 “DC Characteristics”.
AC CHARACTERISTICS
FIGURE 29-3:
LOAD CONDITIONS FOR DEVICE TIMING SPECIFICATIONS
Load Condition 1 – for all pins except OSCO
Load Condition 2 – for OSCO
VDD/2
CL
Pin
RL
VSS
CL
Pin
RL = 464
CL = 50 pF for all pins except OSCO
15 pF for OSCO output
VSS
TABLE 29-15: CAPACITIVE LOADING REQUIREMENTS ON OUTPUT PINS
Param
Symbol
No.
Characteristic
Min
Typ(1)
Max
Units
Conditions
15
pF
In XT and HS modes when
external clock is used to drive
OSCI.
COSC2
OSCO/CLKO Pin
—
—
DO56
CIO
All I/O Pins and OSCO
—
—
50
pF
EC mode.
DO58
CB
SCLx, SDAx
—
—
400
pF
In I2C™ mode.
DO50
Note 1:
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
2010 Microchip Technology Inc.
DS39940D-page 319
PIC24FJ64GB004 FAMILY
FIGURE 29-4:
EXTERNAL CLOCK TIMING
Q4
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
Q1
Q2
Q3
OSCI
OS20
OS30
OS31
OS30
OS31
OS25
CLKO
OS40
OS41
TABLE 29-16: EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS
Param
Sym
No.
OS10
Characteristic
FOSC External CLKI Frequency
(External clocks allowed
only in EC mode)
Oscillator Frequency
Standard Operating Conditions: 2.50 to 3.6V (unless otherwise stated)
Operating temperature -40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
Min
Typ(1)
Max
Units
DC
4
DC
4
—
—
—
—
32
8
24
6
MHz
MHz
MHz
MHz
EC, -40°C TA +85°C
ECPLL, -40°C TA +85°C
EC, -40°C TA +125°C
ECPLL, -40°C TA +125°C
3
3
10
31
3
10
—
—
—
—
—
—
10
8
32
33
6
24
MHz
MHz
MHz
kHz
MHz
MHz
XT
XTPLL, -40°C TA +85°C
HS, -40°C TA +85°C
SOSC
XTPLL, -40°C TA +125°C
HS, -40°C TA +125°C
—
—
—
—
Conditions
OS20
TOSC TOSC = 1/FOSC
OS25
TCY
62.5
—
DC
ns
OS30
TosL, External Clock in (OSCI)
TosH High or Low Time
0.45 x TOSC
—
—
ns
EC
OS31
TosR, External Clock in (OSCI)
TosF Rise or Fall Time
—
—
20
ns
EC
OS40
TckR
CLKO Rise Time(3)
—
6
10
ns
OS41
TckF
CLKO Fall Time(3)
—
6
10
ns
Note 1:
2:
3:
Instruction Cycle Time(2)
See parameter OS10
for FOSC value
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
Instruction cycle period (TCY) equals two times the input oscillator time base period. All specified values
are based on characterization data for that particular oscillator type under standard operating conditions
with the device executing code. Exceeding these specified limits may result in an unstable oscillator
operation and/or higher than expected current consumption. All devices are tested to operate at “Min.”
values with an external clock applied to the OSCI/CLKI pin. When an external clock input is used, the
“Max.” cycle time limit is “DC” (no clock) for all devices.
Measurements are taken in EC mode. The CLKO signal is measured on the OSCO pin. CLKO is low for
the Q1-Q2 period (1/2 TCY) and high for the Q3-Q4 period (1/2 TCY).
DS39940D-page 320
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
TABLE 29-17: PLL CLOCK TIMING SPECIFICATIONS (VDD = 2.0V TO 3.6V)
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature
-40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
AC CHARACTERISTICS
Param
No.
Sym
Characteristic(1)
OS50
FPLLI
PLL Input Frequency
Range(2)
OS51
FSYS
PLL Output Frequency
Range
OS52
TLOCK PLL Start-up Time
(Lock Time)
OS53
DCLK
Note 1:
2:
CLKO Stability (Jitter)
Min
Typ(2)
Max
Units
4
—
32
MHz
95.76
—
96.24
MHz
—
180
—
s
-0.25
—
0.25
%
Conditions
ECPLL, HSPLL, XTPLL
modes
These parameters are characterized but not tested in manufacturing.
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
TABLE 29-18: INTERNAL RC OSCILLATOR SPECIFICATIONS
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature
-40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
AC CHARACTERISTICS
Param
No.
Sym
TFRC
Characteristic(1)
FRC Start-up Time
TLPRC LPRC Start-up Time
Min
Typ
Max
Units
—
15
—
s
—
500
—
s
Conditions
TABLE 29-19: INTERNAL RC OSCILLATOR ACCURACY
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature
-40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
AC CHARACTERISTICS
Param
No.
Characteristic
F20
FRC Accuracy @ 8 MHz(1,3)
F21
kHz(2)
Note 1:
2:
3:
LPRC Accuracy @ 31
Min
Typ
Max
Units
Conditions
-1.25
+0.25
1.0
%
-40°C TA +85°C, 3.0V VDD 3.6V
-15
—
15
%
-40°C TA +85°C, 3.0V VDD 3.6V
Frequency calibrated at 25°C and 3.3V. OSCTUN bits can be used to compensate for temperature drift.
Change of LPRC frequency as VDD changes.
To achieve this accuracy, physical stress applied to the microcontroller package (ex: by flexing the PCB)
must be kept to a minimum.
2010 Microchip Technology Inc.
DS39940D-page 321
PIC24FJ64GB004 FAMILY
FIGURE 29-5:
CLKO AND I/O TIMING CHARACTERISTICS
I/O Pin
(Input)
DI35
DI40
I/O Pin
(Output)
New Value
Old Value
DO31
DO32
Note: Refer to Figure 29-3 for load conditions.
TABLE 29-20: CLKO AND I/O TIMING REQUIREMENTS
Standard Operating Conditions: 2.0V to 3.6V (unless otherwise stated)
Operating temperature
-40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
AC CHARACTERISTICS
Param
No.
Sym
Characteristic
Min
Typ(1)
Max
Units
DO31
TIOR
Port Output Rise Time
—
10
25
ns
DO32
TIOF
Port Output Fall Time
—
10
25
ns
DI35
TINP
INTx pin High or Low
Time (output)
20
—
—
ns
DI40
TRBP
CNx High or Low Time
(input)
2
—
—
TCY
Note 1:
Conditions
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated.
TABLE 29-21: RESET, POWER-UP TIMER AND BROWN-OUT RESET TIMING REQUIREMENTS
Standard Operating Conditions: 2.0V to 3.6V
(unless otherwise stated)
Operating temperature -40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
AC CHARACTERISTICS
Param
Symbol
No.
Characteristic
Min.
Typ(1)
Max.
Units
2
—
—
s
SY10
TmcL
MCLR Pulse Width (low)
SY11
TPWRT
Power-up Timer Period
—
64
—
ms
SY12
TPOR
Power-on Reset Delay
—
2
—
s
SY13
TIOZ
I/O High-Impedance from MCLR
Low or Watchdog Timer Reset
—
—
100
ns
SY25
TBOR
Brown-out Reset Pulse Width
1
—
—
s
TRST
Internal State Reset Time
—
50
—
s
TDSWU
Wake-up from Deep Sleep Time
—
200
—
s
Note 1:
Conditions
VDD VBOR
Based on full discharge of
10 F capacitor on VCAP.
Includes TPOR and TRST.
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated.
DS39940D-page 322
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
TABLE 29-21: RESET, POWER-UP TIMER AND BROWN-OUT RESET TIMING REQUIREMENTS
Standard Operating Conditions: 2.0V to 3.6V
(unless otherwise stated)
Operating temperature -40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
AC CHARACTERISTICS
Param
Symbol
No.
Characteristic
TPM
Note 1:
Min.
Typ(1)
Max.
Units
—
10
—
s
—
190
—
s
Conditions
Sleep wake-up with PMSLP
= 0 and WUTSEL = 11
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated.
2010 Microchip Technology Inc.
DS39940D-page 323
PIC24FJ64GB004 FAMILY
TABLE 29-22: ADC MODULE SPECIFICATIONS
Standard Operating Conditions: 2.0V to 3.6V
(unless otherwise stated)
Operating temperature -40°C TA +85°C for Industrial
-40°C TA +125°C for Extended
AC CHARACTERISTICS
Param
No.
Symbol
Characteristic
Min.
Typ
Max.
Units
Conditions
Device Supply
AD01
AVDD
Module VDD Supply
Greater of
VDD – 0.3
or 2.0
—
Lesser of
VDD + 0.3
or 3.6
V
AD02
AVSS
Module VSS Supply
VSS – 0.3
—
VSS + 0.3
V
Reference Inputs
AD05
VREFH
Reference Voltage High
AVSS + 1.7
—
AVDD
V
AD06
VREFL
Reference Voltage Low
AVSS
—
AVDD – 1.7
V
AD07
VREF
Absolute Reference
Voltage
AVSS – 0.3
—
AVDD + 0.3
V
AD08
IVREF
Reference voltage input
current
—
—
1.25
mA
(Note 3)
AD09
ZVREF
Reference input
impedance
—
10k
—
(Note 4)
AD10
VINH-VINL Full-Scale Input Span
V
(Note 2)
Analog Input
VREFL
—
VREFH
AD11
VIN
Absolute Input Voltage
AVSS – 0.3
—
AVDD + 0.3
V
AD12
VINL
Absolute VINL Input
Voltage
AVSS – 0.3
—
AVDD/2
V
AD13
—
Leakage Current
—
±0.001
±0.610
A
VINL = AVSS = VREFL = 0V,
AVDD = VREFH = 3V,
Source Impedance = 2.5 k
AD17
RIN
Recommended Impedance
of Analog Voltage Source
—
—
2.5K
10-bit
ADC Accuracy
AD20b NR
Resolution
—
10
—
bits
AD21b INL
Integral Nonlinearity
—
±1
) 0 ./
2010 Microchip Technology Inc.
DS39940D-page 329
PIC24FJ64GB004 FAMILY
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2010 Microchip Technology Inc.
DS39940D-page 331
PIC24FJ64GB004 FAMILY
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
DS39940D-page 332
2010 Microchip Technology Inc.
PIC24FJ64GB004 FAMILY
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