PIC-P26J50 Proto development board
USER’S MANUAL
All boards produced by Olimex LTD are ROHS compliant
Initial release, Januray 2012
Designed by OLIMEX Ltd, 2011
OLIMEX© 2012
PIC-P26J50
Disclaimer:
© 2012 Olimex Ltd. Olimex®, logo and combinations thereof, are registered trademarks of Olimex Ltd. Other
terms and product names may be trademarks of others.
The information in this document is provided in connection with Olimex products. No license, express or
implied or otherwise, to any intellectual property right is granted by this document or in connection with
the sale of Olimex products.
Neither the whole nor any part of the information contained in or the product described in this document may be
adapted or reproduced in any material from except with the prior written permission of the copyright holder.
The product described in this document is subject to continuous development and improvements. All particulars
of the product and its use contained in this document are given by OLIMEX in good faith. However all
warranties implied or expressed including but not limited to implied warranties of merchantability or fitness for
purpose are excluded.
This document is intended only to assist the reader in the use of the product. OLIMEX Ltd. shall not be liable
for any loss or damage arising from the use of any information in this document or any error or omission in such
information or any incorrect use of the product.
Thank you for purchasing the PIC-P26J50 board manufactured by Olimex!
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OLIMEX© 2012
PIC-P26J50
TABLE OF CONTENTS
SECTION 1 OVERVIEW
4
SECTION 2 SETTING UP THE DEVELOPMENT BOARD
SECTION 3 PIC-P26J50 BOARD DESCRIPTION
7
SECTION 4 THE PIC18F26J59 MICROCONTROLLER
SECTION 5 CONTROL CIRCUITRY
SECTION 6 HARDWARE
SECTION 7 MEMORY
11
12
15
SECTION 8 SCHEMATICS
16
SECTION 9 REVISION HISTORY
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OLIMEX© 2012
PIC-P26J50
SECTION 1
OVERVIEW
Thank you for choosing the PIC-P26J50 development board from Olimex! This document
provides a User’s Guide for the Olimex PIC-P26J50 development board. As an overview, this
chapter gives the scope of this document and lists the board’s features. The document’s
organization is then detailed.
1.1
Scope
The PIC-P26J50 development board enables code development of applications running on the
PIC18F26J59 microcontroller. This guide focuses on the PIC-P26J50 board as a development
platform for the PIC18F26J59 device.
1.2
•
•
•
•
•
•
•
•
•
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1.3
Features
PIC18F26J59 microcontroller with 64K Flash
USB connector
8 LEDs
Reset button
User button
UEXT connector
mini ICSP/ICD (0,05””) connector for programming
All PIC free ports available on header close to the prototype area
Perfect for hobbyists
Dimensions 61x45 mm (2.4 x 1.77")
Organization
Each section in this document covers a separate topic, organized as follow:
Section 1 is an overview of the board usage and features
Section 2 provides a guide for quickly setting up the board
Section 3 contains the general board diagram and layout
Section 4 describes the component that is the heart of the board: the PIC18F26J59
microcontroller
Section 5 is an explanation of the control circuitry associated with the microcontroller
to reset, power and clock the board
Section 6 covers the connector pinout, peripherals and jumper description
Section 7 shows the memory map
Section 8 provides the schematics
Section 9 contains the revision history
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OLIMEX© 2012
PIC-P26J50
SECTION 2
SETTING UP THE PIC-P26J50
DEVELOPMENT BOARD
This section helps you set up the PIC-P26J50 development board for the first time.
Please consider first the electrostatic warning to avoid damaging the board, then discover the
hardware and software required to operate the board.
The procedure to power up the board is given, and a description of the default board behavior
is detailed.
2.1 Electrostatic Warning
The PIC-P26J50 development board is shipped in a protective anti-static package. The board
must not be exposed to high electrostatic potentials. A grounding strap or similar protective
device should be worn when handling the board. Avoid touching the component pins or any
other metallic element.
2.2 Requirements
In order to set up the PIC-P26J50 proto board, the following items are required:
- The PIC-P26J50 development board itself
- miniUSB - USB cable
Or
- 3,3 V external power supply
Note: The board is not delivered with an ICSP debugger/programmer, which is needed if you
want to reprogram it. Remember that the connector on the board is mini ICSP (6 pin). You
may use a pair of the following devices for this purpose:
- Olimex’s PIC-ICD2-POCKET + Olimex’s PIC-ICSP
- Olimex’s PIC-KIT3 + Olimex’s PIC-ICSP
Or any compatible PIC programmer with 0,05’’ step ICSP connector.
Also, a host-based software toolchain is required in order to program/debug the PIC-P26J50
board.
Our suggestion is to use Microchip’s MPLab IDE.
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PIC-P26J50
2.3 Powering up the board
The PIC-P26J50 board is self-powered by the miniUSB.
Additionally the board can be powered using the PROTO AREA pads. Provide 3.3 V to the
respective pad with the same label. Ground pad is named GND on the opposite side of the 3.3
V.
On powering the board the PWR LED must turn on and the 8 LEDs must start turning on
consecutively.
2.4 Prebuilt software
On arrival the board has a simple demo for the LEDS (blinking consecutively) and on
pressing BUT they should blink in a different manner.
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OLIMEX© 2012
PIC-P26J50
SECTION 3
PIC-P26J50 BOARD DESCRIPTION
Here you get acquainted with the main parts of the board. Note the names used on the board
differ from the names used to describe them. For the actual names check the PIC-P26J50
board itself.
3.1 Layout (Top view):
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PIC-P26J50
SECTION 4
THE PIC18F26J50 MICROCONTROLLER
4.1 Features
Power Management Features with
nanoWatt XLP™ for Extreme Low-Power:
• Deep Sleep mode: CPU off, Peripherals off,
Currents Down to 13 μA and 850 nA with RTCC:
- Able to wake-up on external triggers, programmable WDT or RTCC alarm
- Ultra Low-Power Wake-up (ULPWU)
• Sleep mode: CPU off, Peripherals off, SRAM on, Fast Wake-up, Currents Down to
105 μA, Typical
• Idle: CPU off, Peripherals on, Currents Down to 2.3 nA, Typical
•
•
Run: CPU on, Peripherals on, Currents Down to 6.2 nA, Typical
Timer1 Oscillator w/RTCC: 1 nA, 32 kHz, Typical
• Watchdog Timer: 0.8 μA, 2V, Typical
Special Microcontroller Features:
• Low-Power, High-Speed CMOS Flash Technology
• C Compiler Optimized Architecture for Re-Entrant Code
• Priority Levels for Interrupts
• Self-Programmable under Software Control
• 8 x 8 Single-Cycle Hardware Multiplier
• Extended Watchdog Timer (WDT):
- Programmable period from 4 ms to 131s
• Single-Supply In-Circuit Serial Programming™(ICSP™) via two pins
• In-Circuit Debug (ICD) w/Three Breakpoints via 2 Pins
• Operating Voltage Range of 2.0V to 3.6V
• On-Chip 2.5V Regulator
• Flash Program Memory of 10,000 Erase/Write Cycles Minimum and 20-Year Data
Retention
Universal Serial Bus (USB) Features
• USB V2.0 Compliant
• Full Speed (12 Mbps) and Low Speed (1.5 Mbps)
• Supports Control, Interrupt, Isochronous and BulkTransfers
• 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 with Crystal-less operation
Flexible Oscillator Structure:
• High-Precision Internal Oscillator (±0.15% typ.) for USB
• Two External Clock modes, up to 48 MHz (12 MIPS)
• Low-Power, 31 kHz Internal RC Oscillator
• Tunable Internal Oscillator (31 kHz to 8 MHz, or up to 48 MHz with PLL)
• Secondary Oscillator using Timer1 @ 32 kHz
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•
Fail-Safe Clock Monitor:
- Allows for safe shutdown if any clock stops
• Two-Speed Oscillator Start-up
• Programmable Reference Clock Output Generator
Peripheral Highlights:
• Peripheral Pin Select:
- Allows independent I/O mapping of many peripherals
- Continuous hardware integrity checking and safety interlocks prevent unintentional
configuration changes
• Hardware Real-Time Clock and Calendar (RTCC):
- Provides clock, calendar and alarm functions
• High-Current Sink/Source 25 mA/25 mA (PORTB and PORTC)
• 5.5V Tolerant Inputs (digital only pins)
• Four Programmable External Interrupts
• Four Input Change Interrupts
• Two Enhanced Capture/Compare/PWM (ECCP) modules:
- One, two or four PWM outputs
- Selectable polarity
- Programmable dead time
- Auto-shutdown and auto-restart
- Pulse steering control
• Two Master Synchronous Serial Port (MSSP) modules Supporting Three-Wire SPI
(all four modes) and I2C™ Master and Slave modes
• Full-Duplex Master/Slave SPI DMA Engine
• 8-Bit Parallel Master Port/Enhanced Parallel Slave Port
• Two-Rail – Rail Analog Comparators with Input Multiplexing
• 10-Bit, up to 13-Channel Analog-to-Digital (A/D)
Converter module:
- Auto-acquisition capability
- Conversion available during Sleep
- Self-calibration
• High/Low-Voltage Detect module
• Charge Time Measurement Unit (CTMU):
Supports capacitive touch sensing for touch screens and capacitive switches
- Provides a precise resolution time measurement for both flow measurement and simple
temperature sensing
• Two Enhanced USART modules:
- Supports RS-485, RS-232 and LIN/J2602
- Auto-Wake-up on Start bit
• Auto-Baud Detect
For comprehensive information on the microcontroller visit the Microchip’s web
page for a datasheet.
At the moment of writing the microcontroller datasheet can be found at the following link:
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http://ww1.microchip.com/downloads/en/DeviceDoc/39931d.pdf
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SECTION 5
CONTROL CIRCUITRY
5.1 Power supply
When PIC-P26J50 is connected via a USB cable to a USB host it will take its 3,3V power
supply from the USB host source to power the board.
Additionally the board can be powered using the 3.3V pad and the GND pad on the proto
area.
5.2 Reset
PIC-P26J50 reset circuit includes R8 (390Ω), PIC18F26J59 pin 1 (#MCLR/TTL) and a
RESET button.
5.3 Clock
Quartz crystal pad is available but a quartz crystal is not mounted! If you want to use the
oscillator you have to mount a quartz crystal 12Mhz/12pF on Q1.
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PIC-P26J50
SECTION 6
HARDWARE
6.1 Mini ICSP
The mini ICSP connector provides the interface for In-Circuit-Serial-Programming. The step
between its pins is 0.05".
Pin #
Signal Name
1
RSTN/Vpp
2
+3.3V
3
GND
4
PGD
5
PGC
6
Not connected
6.2
UEXT
PIC32-PINGUINO-MICRO board has UEXT connector and can interface Olimex's UEXT
modules.
For more information on UEXT please visit:
http://www.olimex.com/dev/OTHER/UEXT.pdf
Pin #
Signal Name
1
+3.3V
2
GND
3
TXD
4
RXD
5
SCL
6
SDA
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PIC-P26J50
7
MISO
8
MOSI
9
SCK
10
CS
6.3 Pads on the proto area
For your convenience the pads are named individually near each of them. Please take extra
care about the numbering.
All pads are near the PIC18, except for GND and 3,3V pads.
PAD #
Signal Name
PB_0
USER (RB0/AN12/INT0/RP3)
PB_1
SCK
PB_2
MISO
PB_3
MOSI
PB_4
SCL
PB_5
SDA
PB_6
PGC
PB_7
PGD
PC_0
LED6
PC_1
LED5
PC_2
LED4
PC_4
D-
PC_5
D+
PC_6
TXD
PC_7
RXD
PA_0
LED0
PA_1
LED1
PA_2
LED2
PA_3
LED3
PA_5
LED7
PA_6
OSC2/CLK0 (to quartz pad)
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OLIMEX© 2012
PA_7
6.4
PIC-P26J50
Vss OSC (quarz pad)
Power pads on the proto area
For your convenience the external power pads are named individually on the top of the board.
Please take extra care about the naming.
6.5 Mini USB
Pin #
Signal Name
1
+5V_VBUS
2
D-
3
D+
4
Not connected
5
GND
6.6 Jumper description
VUSB_3.3
This jumper, when closed, enables 3.3 V received from the USB.
Default state is closed.
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PIC-P26J50
SECTION 7
MEMORY
7.1 Memory map
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PIC-P26J50
SECTION 8
SCHEMATICS
8.1 Eagle schematic
PIC-P26J50 schematic is visible for reference here. You can also find them on separated in
the web page for PIC-P26J50 on our site: http://www.olimex.com/dev/pic-p26j50.html. They
are located in HARDWARE section.
The EAGLE schematic is situated on the next page for quicker reference.
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8.2
PIC-P26J50
Physical dimensions
Note: All dimensions are in inches!
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PIC-P26J50
SECTION 9
REVISION HISTORY
9.1
9.2
Document revision
Revision
Changes
Modified
Pages
A
Initial Creation
All
Web page of your device
The web page you can visit for more info on your device is http://www.olimex.com/dev/picp26j50.html. There you can find more info and some examples.
ORDER CODES:
PIC-P26J50 - completely assembled and tested with PIC18F26J50 on board
PIC-ICD2-POCKET + PIC-ICSP - for custom programming/debugging
PIC-KIT3 + PIC-ICSP - for custom programming/debugging
USB-MINI-CABLE - USBmini to USB-A cable
How to order?
You can order to us directly or by any of our distributors.
Check our webpage http://www.olimex.com/ for more info.
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