dsPIC33EP128GS808
Development Board
User’s Guide
2017 Microchip Technology Inc.
DS50002632A
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and may be superseded by updates.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
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights unless otherwise stated.
Microchip received ISO/TS-16949:2009 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.
QUALITY MANAGEMENT SYSTEM
CERTIFIED BY DNV
Trademarks
The Microchip name and logo, the Microchip logo, AnyRate, AVR,
AVR logo, AVR Freaks, BeaconThings, BitCloud, CryptoMemory,
CryptoRF, dsPIC, FlashFlex, flexPWR, Heldo, JukeBlox, KEELOQ,
KEELOQ logo, Kleer, LANCheck, LINK MD, maXStylus,
maXTouch, MediaLB, megaAVR, MOST, MOST logo, MPLAB,
OptoLyzer, PIC, picoPower, PICSTART, PIC32 logo, Prochip
Designer, QTouch, RightTouch, SAM-BA, SpyNIC, SST, SST
Logo, SuperFlash, tinyAVR, UNI/O, and XMEGA are registered
trademarks of Microchip Technology Incorporated in the U.S.A.
and other countries.
ClockWorks, The Embedded Control Solutions Company,
EtherSynch, Hyper Speed Control, HyperLight Load, IntelliMOS,
mTouch, Precision Edge, and Quiet-Wire are registered
trademarks of Microchip Technology Incorporated in the U.S.A.
Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any
Capacitor, AnyIn, AnyOut, BodyCom, chipKIT, chipKIT logo,
CodeGuard, CryptoAuthentication, CryptoCompanion,
CryptoController, dsPICDEM, dsPICDEM.net, Dynamic Average
Matching, DAM, ECAN, EtherGREEN, In-Circuit Serial
Programming, ICSP, Inter-Chip Connectivity, JitterBlocker,
KleerNet, KleerNet logo, Mindi, MiWi, motorBench, MPASM, MPF,
MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach,
Omniscient Code Generation, PICDEM, PICDEM.net, PICkit,
PICtail, PureSilicon, QMatrix, RightTouch logo, REAL ICE, Ripple
Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI,
SuperSwitcher, SuperSwitcher II, Total Endurance, TSHARC,
USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, 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.
Silicon Storage Technology is a registered trademark of Microchip
Technology Inc. in other countries.
GestIC is a registered trademark of Microchip Technology
Germany II GmbH & Co. KG, a subsidiary of Microchip Technology
Inc., in other countries.
All other trademarks mentioned herein are property of their
respective companies.
© 2017, Microchip Technology Incorporated, All Rights Reserved.
ISBN: 978-1-5224-1406-3
== ISO/TS 16949 ==
DS50002632A-page 2
2017 Microchip Technology Inc.
Object of Declaration: dsPIC33EP128GS808 Development Board
EU Declaration of Conformity
This declaration of conformity is issued by the manufacturer.
The development/evaluation tool is designed to be used for research and development in a laboratory environment. This
development/evaluation tool is not a Finished Appliance, nor is it intended for incorporation into Finished Appliances that are made
commercially available as single functional units to end users under EU EMC Directive 2004/108/EC and as supported by the European
Commission's Guide for the EMC Directive 2004/108/EC (8th February 2010).
This development/evaluation tool complies with EU RoHS2 Directive 2011/65/EU.
This development/evaluation tool, when incorporating wireless and radio-telecom functionality, is in compliance with the essential
requirement and other relevant provisions of the R&TTE Directive 1999/5/EC and the FCC rules as stated in the declaration of conformity
provided in the module datasheet and the module product page available at www.microchip.com.
For information regarding the exclusive, limited warranties applicable to Microchip products, please see Microchip’s standard terms and
conditions of sale, which are printed on our sales documentation and available at www.microchip.com.
Signed for and on behalf of Microchip Technology Inc. at Chandler, Arizona, USA.
2017 Microchip Technology Inc.
DS50002632A-page 3
dsPIC33EP128GS808 Development Board User’s Guide
NOTES:
DS50002632A-page 4
2017 Microchip Technology Inc.
dsPIC33EP128GS808 DEVELOPMENT
BOARD USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 7
Introduction............................................................................................................ 7
Document Layout .................................................................................................. 7
Conventions Used in this Guide ............................................................................ 8
Recommended Reading........................................................................................ 9
The Microchip Web Site ........................................................................................ 9
Product Change Notification Service..................................................................... 9
Customer Support ................................................................................................. 9
Document Revision History ................................................................................... 9
Chapter 1. Product Overview
1.1 Introduction ................................................................................................... 11
1.2 Overview ...................................................................................................... 11
1.3 Development Board Functionality and Features .......................................... 12
1.4 Electrical Specifications ................................................................................ 12
Chapter 2. Hardware
2.1 Top Assembly ............................................................................................... 13
2.2 Signal Configuration ..................................................................................... 15
2.3 Application Components .............................................................................. 17
2.4 Board Connectors ........................................................................................ 17
2.5 Indicators and Human Interfaces ................................................................. 18
2.6 Test Points ................................................................................................... 19
2.7 Programmer/Debugger ................................................................................. 20
Chapter 3. Demonstration Program Operation
3.1 Hardware Description ................................................................................... 21
3.2 Program Demonstration ............................................................................... 25
3.3 Code Demonstration .................................................................................... 28
3.4 Other Code Examples .................................................................................. 30
Appendix A. Board Layout and Schematics.............................................................. 31
Worldwide Sales and Service .................................................................................... 36
2017 Microchip Technology Inc.
DS50002632A-page 5
dsPIC33EP128GS808 Development Board User’s Guide
NOTES:
DS50002632A-page 6
2017 Microchip Technology Inc.
dsPIC33EP128GS808 DEVELOPMENT
BOARD USER’S GUIDE
Preface
NOTICE TO CUSTOMERS
All documentation becomes dated, and this manual is no exception. Microchip tools and
documentation are constantly evolving to meet customer needs, so some actual dialogs
and/or tool descriptions may differ from those in this document. Please refer to our web site
(www.microchip.com) to obtain the latest documentation available.
Documents are identified with a “DS” number. This number is located on the bottom of each
page, in front of the page number. The numbering convention for the DS number is
“DSXXXXXXXXA”, where “XXXXXXXX” is the document number and “A” is the revision level
of the document.
For the most up-to-date information on development tools, see the MPLAB® IDE online help.
Select the Help menu, and then Topics, to open a list of available online help files.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
dsPIC33EP128GS808 Development Board. Items discussed in this chapter include:
•
•
•
•
•
•
Document Layout
Conventions Used in this Guide
Recommended Reading
The Microchip Web Site
Customer Support
Document Revision History
DOCUMENT LAYOUT
This document describes how to use the dsPIC33EP128GS808 Development Board
as a development tool to emulate and debug firmware on a target board. The manual
layout is as follows:
• Product Overview – This chapter introduces the dsPIC33EP128GS808
Development Board and provides an overview of its features.
• Hardware – This chapter describes the hardware components of the
dsPIC33EP128GS808 Development Board.
• Demonstration Program Operation – This chapter includes a program
demonstration, code demonstration and code examples for the
dsPIC33EP128GS808 Development Board.
• Appendix A – Shows the schematics and board layouts for the
dsPIC33EP128GS808 Development Board.
2017 Microchip Technology Inc.
DS50002632A-page 7
dsPIC33EP128GS808 Development Board User’s Guide
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Represents
Examples
Arial font:
MPLAB® IDE User’s Guide
Italic characters
Referenced books
Emphasized text
...is the only compiler...
Initial caps
A window
the Output window
A dialog
the Settings dialog
A menu selection
select Enable Programmer
Quotes
A field name in a window or
dialog
“Save project before build”
Underlined, italic text with
right angle bracket
A menu path
File>Save
Bold characters
A dialog button
Click OK
A tab
Click the Power tab
N‘Rnnnn
A number in verilog format,
4‘b0010, 2‘hF1
where N is the total number of
digits, R is the radix and n is a
digit.
Text in angle brackets < >
A key on the keyboard
Press ,
Sample source code
#define START
Filenames
autoexec.bat
File paths
c:\mcc18\h
Keywords
_asm, _endasm, static
Command-line options
-Opa+, -Opa-
Bit values
0, 1
Constants
0xFF, ‘A’
Italic Courier New
A variable argument
file.o, where file can be
any valid filename
Square brackets [ ]
Optional arguments
mcc18 [options] file
[options]
Curly brackets and pipe
character: { | }
Choice of mutually exclusive
arguments; an OR selection
errorlevel {0|1}
Ellipses...
Replaces repeated text
var_name [,
var_name...]
Represents code supplied by
user
void main (void)
{ ...
}
Courier New font:
Plain Courier New
DS50002632A-page 8
2017 Microchip Technology Inc.
Preface
RECOMMENDED READING
This quick start guide describes how to use the dsPIC33EP128GS808 Development
Board. Other useful documents are listed below. The following Microchip document is
available and recommended as a supplemental reference resource:
• “dsPIC33EPXXXGS70X/80X Family Data Sheet” (DS70005258)
THE MICROCHIP WEB SITE
Microchip provides online support via our web site at www.microchip.com. This
web site is used as a means to make files and information easily available to
customers. Accessible by using your favorite Internet browser, the web site contains
the following information:
• Product Support – Data sheets and errata, application notes and sample
programs, design resources, user’s guides and hardware support documents,
latest software releases and archived software
• General Technical Support – Frequently Asked Questions (FAQs), technical
support requests, online discussion groups, Microchip consultant program
member listing
• Business of Microchip – Product selector and ordering guides, latest Microchip
press releases, listing of seminars and events, listings of Microchip sales offices,
distributors and factory representatives
PRODUCT CHANGE NOTIFICATION SERVICE
Microchip’s customer notification service helps keep customers current on Microchip
products. Subscribers will receive e-mail notifications whenever there are changes,
updates, revisions or errata related to a specified product family or development tool of
interest.
To register, access the Microchip web site at www.microchip.com, click on Product
Change Notification and follow the registration instructions.
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
•
•
•
•
Distributor or Representative
Local Sales Office
Embedded Solutions Engineer (ESE)
Technical Support
Customers should contact their distributor, representative or Embedded Solutions
Engineer (ESE) for support. Local sales offices are also available to help customers.
A listing of sales offices and locations is included in the back of this document.
Technical support is available through the web site at:
http://www.microchip.com/support.
DOCUMENT REVISION HISTORY
Revision A (June 2017)
• Initial Release of this Document.
2017 Microchip Technology Inc.
DS50002632A-page 9
dsPIC33EP128GS808 Development Board User’s Guide
NOTES:
DS50002632A-page 10
2017 Microchip Technology Inc.
dsPIC33EP128GS808 DEVELOPMENT
BOARD USER’S GUIDE
Chapter 1. Product Overview
1.1
INTRODUCTION
This chapter introduces the dsPIC33EP128GS808 Development Board and provides
an overview of its features. The topics covered include:
• Overview
• Development Board Functionality and Features
• Electrical Specifications
1.2
OVERVIEW
The dsPIC33EP128GS808 Development Board (referred to as development board) is
designed to aid in the evaluation and development of firmware for the dsPIC33EP ‘GS’
family of Digital Signal Controllers (DSCs). There are 3 primary objectives for
development of this board:
• Evaluation of peripherals and core features of the GS family
• Support for dual CAN solutions with the “CAN/LIN/J2602 PICtail™ (Plus)
Daughter Board User’s Guide” (DS70319)
• Demonstration of emulated power supply transient response
The development board can be used as a stand-alone platform for evaluating DSC core
features, such as throughput and device peripherals, which include ADC, PWM, PGA,
CMP, SPI, I2C, etc. Table 2-3 provides a comprehensive list of I/O signals available for
evaluation. Note that the remappable I/Os provide additional flexibility to access
additional signals on the I/O pins. Refer to the “dsPIC33EPXXXGS70X/80X Family
Data Sheet” (DS70005258) for further details.
The development board provides support for development of dual CAN applications,
along with the CAN/LIN/J2602 PICtail (Plus) Daughter Board. The CAN/LIN/J2602
PICtail (Plus) Daughter Board consists of 2 sets of CAN drivers and 2 sets of LIN
drivers. The development board plugs into the PICtail board and allows
development of CAN or LIN communication.
The development board contains multiple first-order RC filters to emulate power supply
functionality. The board can be operated in Open or Closed-Loop mode. Furthermore,
there is additional hardware on the board to simulate power supply transient behavior.
The board can be powered with a standard 9V adapter or through the mini-USB. The
board can be programmed with standard Microchip programming tools via an RJ25
connector and contains LEDs, switch, selectable jumpers for maximizing peripheral
interconnectivity, potentiometers and analog feedback networks, all of which help to
facilitate development of firmware on the dsPIC33EP ‘GS’ devices.
2017 Microchip Technology Inc.
DS50002632A-page 11
dsPIC33EP128GS808 Development Board User’s Guide
1.3
DEVELOPMENT BOARD FUNCTIONALITY AND FEATURES
The dsPIC33EP128GS808 Development Board allows users to evaluate the features
of dsPIC33EP ‘GS’ series devices. The dsPIC33EP ‘GS’ devices offer new peripherals
and features that can be explored using the development board. Configurable connectors make it easy to connect different peripherals together to test features that would
otherwise require additional hardware. The development board can also be used to
develop dual CAN communication systems when used along with the CAN/LIN/J2602
PICtail (Plus) Daughter Board.
The development board provides the following features:
• Dual CAN/LIN Interface:
- Used as an add-on board to the CAN/LIN/J2602 PICtail (Plus)
Daughter Board
- Interfaces with CAN and LIN drivers on the CAN/LIN/J2602 PICtail (Plus)
Daughter Board
- Provides power to CAN and LIN drivers on the CAN/LIN/J2602 PICtail (Plus)
Daughter Board
• Power Supply Simulation Using First-Order Filters:
- Separate voltage and current loop emulation
- Provision to simulate dynamic response
- Multiple first-order filters on board, selectable by jumpers
- Ramp generator circuit
- Constant-current test circuit
• General Features:
- External voltage input provision
- Debug switch and LEDs
- On-board power supply – operates from 9V input
- Optional USB power
- RJ25 connector programming interface
- PICkit™ 3 serial analyzer
1.4
ELECTRICAL SPECIFICATIONS
TABLE 1-1:
DC INPUT RATING (J1)
Parameter Minimum Typical Maximum
DS50002632A-page 12
11
Units
V
Remarks
Voltage
7.0
9
9V Adapter
Current
0.2
—
—
A
Stand-Alone Mode
—
—
0.7
A
With CAN/LIN Operating on the
PICtail™ Board
2017 Microchip Technology Inc.
dsPIC33EP128GS808 DEVELOPMENT
BOARD USER’S GUIDE
Chapter 2. Hardware
This chapter describes the hardware components of the dsPIC33EP128GS808
Development Board. The topics covered include:
•
•
•
•
•
•
•
2.1
Top Assembly
Signal Configuration
Application Components
Board Connectors
Indicators and Human Interfaces
Test Points
Programmer/Debugger
TOP ASSEMBLY
The top and bottom assemblies of the board are shown in Figure 2-1 and Figure 2-2.
Table 2-1 and Table 2-2 provide a description of the components.
FIGURE 2-1:
2017 Microchip Technology Inc.
DEVELOPMENT BOARD COMPONENTS (TOP)
DS50002632A-page 13
dsPIC33EP128GS808 Development Board User’s Guide
TABLE 2-1:
DEVELOPMENT BOARD COMPONENTS (TOP)
Number
Description
1
dsPIC33EP128GS808
2
Configurable Jumpers
3
Switch (SW1)
4
Diagnostic LEDs
5
Potentiometers
6
Power LED
7
9V Power Connector (J1)
8
USB Connector (J2)
9
Programming Connector
10
PICkit™ 3 Serial Analyzer (J24)
FIGURE 2-2:
TABLE 2-2:
DEVELOPMENT BOARD COMPONENTS (BOTTOM)
DEVELOPMENT BOARD COMPONENTS (BOTTOM)
Number
DS50002632A-page 14
Description
1
Voltage Regulators
2
Connector J17
3
Connector J18
4
Op Amp U3
5
Op Amp U5
6
MOSFET Q2
7
MOSFET Q1
2017 Microchip Technology Inc.
Hardware
2.2
SIGNAL CONFIGURATION
Table 2-3 provides a full list of the dsPIC33EP ‘GS’ DSC connections and a brief
functional description of the pins used on the development board.
TABLE 2-3:
dsPIC33 PIN CONFIGURATION DETAILS
Development
Board Signal
Label
Device
Pin #
Device Pin
Function
PWM4L
1
PWM4L
PWM Output
PWM1H
2
PWM1H
PWM Output
PWM1L
3
PWM1L
PWM Output
Description
PWM8L
4
PWM8L
PWM Output
PWM8H
5
PWM8H
PWM Output
RP48
6
CAN1TX
CAN1 Transmit
RP61
7
CAN1RX
CAN1 Receive
FLT10
8
FLT10
Fault Signal, I/O
MCLR
9
MCLR
Reset Signal
FLT9
10
FLT9
Fault Signal, I/O
VSS
11
VSS
3.3V Return
VDD
12
VDD
3.3V
RE2
13
RE2
I/O
RE3
14
RE3
I/O
AVDD
15
AVDD
Filtered 3.3V
RP60
16
RP60
Reconfigurable Pin
AN0
17
AN0
Analog ADC Input
AN1
18
AN1
Analog ADC Input
AN2
19
AN2
Analog ADC Input
AN3
20
AN3
Analog ADC Input
ISRC4
21
ISRC4
RE4
22
SW1
Current Source Input
Switch Input
RE5
23
RE5
I/O
AVDD
24
AVDD
Filtered 3.3V
AVDD
25
AVDD
Filtered 3.3V
AVSS
26
AVSS
Filtered 3.3V Return
AN15
27
AN15
DACOUT2
28
DACOUT2
AN11
29
AN11
EXTREF2
30
EXTREF2
Analog ADC Input
DAC Output
Analog ADC Input
External ADC Reference Voltage
VSS
31
VSS
3.3V Return
VDD
32
VDD
3.3V
CMP4C
33
CMP4C
Comparator Input
CMP4A
34
CMP4A
Comparator Input
CMP4B
35
CMP4B
Comparator Input
AN16
36
AN16
Analog ADC Input
RE6
37
RE6
I/O
RE7
38
RE7
I/O
RP63
39
LIN1RX
2017 Microchip Technology Inc.
LIN1 Receive
DS50002632A-page 15
dsPIC33EP128GS808 Development Board User’s Guide
TABLE 2-3:
DS50002632A-page 16
dsPIC33 PIN CONFIGURATION DETAILS (CONTINUED)
Development
Board Signal
Label
Device
Pin #
Device Pin
Function
DACOUT1
40
DACOUT1
RB4
41
RB4
I/O
RC14
42
RC14
I/O
RE8
43
GPIO1
I/O
Description
DAC Output
RE9
44
GPIO2
I/O
CMP4D
45
CMP4D
Comparator Input
RP55
46
CAN2TX
CAN2 Transmit
RP56
47
CAN2RX
CAN2 Receive
VDD
48
VDD
RD14
49
RD14
I/O
RD9
50
RD9
I/O
VSS
51
VSS
3.3V Return
RE10
52
LED2
LED Control Signal
RE11
53
LED1
LED Control Signal
RP72
54
LIN1TX
LIN1 Transmit
PGED3/SD2
55
PGED3
Programmer Interface for J3
PGEC3/SCL2
56
PGEC3
RP75
57
LIN1TXE
AN19
58
AN19
RP64
59
LIN1CS
3.3V
Programmer Interface for J3
LIN1 Transmit Enable
Analog ADC Input
LIN1 Control Signal
PGED1/SCL1
60
SCL1
PICkit™ Serial Analyzer
PGEC1/SDA1
61
SDA1
PICkit Serial Analyzer
RP52
62
LIN2CS
RE12
63
RE12
I/O
RE13
64
RE13
I/O
RP53
65
LIN2TX
LIN2 Transmit
RP54
66
LIN2RX
LIN2 Receive
RP69
67
LIN2TXE
LIN2 Transmit Enable
PWM5H
68
PWM5H
PWM Output
PWM5L
69
PWM5L
PWM Output
VCAP
70
VCAP
Core Voltage
VDD
71
VDD
3.3V
PWM6H
72
PWM6H
PWM Output
PWM6L
73
PWM6L
PWM Output
LIN2 Control Signal
PWM7L
74
PWM7L
PWM Output
PWM7H
75
PWM7H
PWM Output
PWM3H
76
PWM3H
PWM Output
PWM3L
77
PWM3L
PWM Output
PWM2H
78
PWM2H
PWM Output
PWM2L
79
PWM2L
PWM Output
PWM4H
80
PWM4H
PWM Output
2017 Microchip Technology Inc.
Hardware
2.3
APPLICATION COMPONENTS
Table 2-4 describes the application components that are available on the
dsPIC33EP128GS808 Development Board (see Figure 2-1 and Figure 2-2 for
component locations).
TABLE 2-4:
COMPONENT DETAILS
Component
Label
Description
Top Assembly Components (see Figure 2-1)
Microcontroller (DSC)
U4
Main Controller
Configurable Jumpers
Jx
Jumpers for Selecting Various Inputs
Switch
SW1
Diagnostic LEDs
LD1, LD2
Potentiometers
R12, R20
Power LED
LD3
Switch Input
LEDs for Diagnostics
Variable Input Voltage to Controller
Power Indicator
Input Power Connector
J1
9V DC Input
USB Connector
J2
USB Power Connection
Programming Connector
J3
Connection to Programmer/Debugger
PICkit™ Serial Analyzer
J24
Communication Interface (not mounted)
Bottom Assembly Components (see Figure 2-2)
2.4
Voltage Regulator
U1
Converts 9V DC Input to 5V
Voltage Regulator
U2
Converts 5V DC Input to 3.3V
Op Amp
U3
Used as a Buffer or Summing Node
Op Amp
U5
Used as a Buffer
MOSFET
Q1
Switch for Generating a Ramp Signal
MOSFET
Q2
Switch for Generating Transient Loading
Interface Connector
J17
CAN/LIN Interface with PICtail™ Plus
Interface Connector
J18
CAN/LIN Interface with PICtail Plus
BOARD CONNECTORS
Table 2-5 describes the hardware connections available on the development board
(see Figure 2-1 and Figure 2-2 for component locations).
TABLE 2-5:
CONNECTOR DETAILS
Label
2017 Microchip Technology Inc.
Description
J1
9V DC Input
J2
USB Connection for Powering the Board (provides 5V DC input)
J3
J25 Connector to Provide External Programmer/Debugger Interface
J24
PICkit™ 3 Serial Analyzer Communication Interface (not mounted)
DS50002632A-page 17
dsPIC33EP128GS808 Development Board User’s Guide
2.5
INDICATORS AND HUMAN INTERFACES
Table 2-6 describes the user interfaces available on the development board kit.
TABLE 2-6:
HUMAN INTERFACE DETAILS
Label
SW1
DS50002632A-page 18
Description
Switch Input.
LD1
Diagnostic Green LED.
LD2
Diagnostic Red LED.
LD3
Green LED Power Indicator.
R12
Potentiometer to Provide Variable Voltage (0-3.3V) to Controller I/O Pins.
R20
Potentiometer to Provide Variable Voltage (0-3.3V) to Controller I/O Pins.
J4
Selects PWM1H or PWM1L as an Input to the RC Filter.
J5
Selects PWM2H or PWM2L as an Input to the RC Filter.
J6
Selects PWM3H or PWM3L as an Input to the RC Filter.
J7
Selects PWM4H or PWM4L as an Input to the RC Filter.
J8
Selects PWM1-4 Passed through an RC Filter as Input to the Op Amp Buffer.
The Circuit Emulates Output of a Switched Mode Power Supply (SMPS).
Multiple PWMs can be Selected if Necessary.
J10
Selects PWM5H or PWM5L as an Input to the RC Filter.
J11
Selects PWM6H or PWM6L as an Input to the RC Filter.
J12
Selects PWM5-6 Passed through an RC Filter as Input to the Op Amp Buffer.
The Circuit Emulates Output of a Switched Mode Power Supply (SMPS). Both
PWMs can be Selected if Necessary.
J15
Selects PWM7H or PWM7L as an Input to the Ramp Generator Circuit.
J20
Allows Connection of PWM Signals to Comparator or Fault Inputs.
J22
Connects a Variable Voltage Generated by Potentiometer R20 or DACOUT2.
J23
Connects Current Source to a Resistive or Capacitive Load.
2017 Microchip Technology Inc.
Hardware
2.6
TEST POINTS
Table 2-7 describes the test points that are available on the development board. See
Figure 2-3 for test point locations.
TABLE 2-7:
TEST POINTS
Label
TP1
3.3V (P3V3)
TP2
3.3V Return (GND)
TP3
External 3.3V Input to ADC
TP4
External 3.3V Return (AGND)
TP5
Buffer Output from RC Filters
TP6
Filtered 3.3V Return (AGND)
TP7
3.3V Return (GND)
TP8
Filtered 3.3V (P3V3A) (not mounted on board)
FIGURE 2-3:
2017 Microchip Technology Inc.
Description
TEST POINT LOCATIONS
DS50002632A-page 19
dsPIC33EP128GS808 Development Board User’s Guide
2.7
PROGRAMMER/DEBUGGER
The development board needs an external programmer/debugger, such as the
MPLAB® ICD 3 or REAL ICE™ emulator to program the controller on the board.
TABLE 2-8:
PROGRAMMER/DEBUGGER COMPONENTS
Component
Programmer/Debugger
Connector
DS50002632A-page 20
Label
J3
RJ25 Connection for Interface to MPLAB® ICD 3
(DV164035)/REAL ICE™ Emulator (DV244005)
2017 Microchip Technology Inc.
dsPIC33EP128GS808 DEVELOPMENT
BOARD USER’S GUIDE
Chapter 3. Demonstration Program Operation
The dsPIC33EP128GS808 Development Board is preprogrammed with application
software that emulates the closed-loop operation of a power supply. The program illustrates 2-Pole, 2-Zero (2P2Z) compensator control of the output voltage for the power
supply emulation circuit. This code can be downloaded from Microchip web site
(www.microchip.com).
This section covers the following topics:
•
•
•
•
3.1
Hardware Description
Software Demonstration
Code Demonstration
Other Code Examples
HARDWARE DESCRIPTION
The hardware on the development board emulates the behavior of a power supply.
Most of the power supply topologies consist of 2nd order Inductor-Capacitor (LC)
filters, which smooth out the high-frequency switching content from the output voltage,
resulting in a DC output voltage. The controller monitors the output voltage, compares
it with a reference voltage and generates the required PWM duty cycle to maintain the
output voltage equal to the reference voltage. The switching frequency is fixed and the
output voltage regulation is maintained by controlling the on time of the switch. The
ratio of the on time to the total switch duration is known as the duty cycle. The DSC
implements a digital compensator, with the voltage error as input and the duty cycle as
output. The development board does not use any inductor, but relies on the
single-order RC filter and PWM to emulate the power stage of the supply. Figure 3-1
shows the hardware used for emulating the power supply.
2017 Microchip Technology Inc.
DS50002632A-page 21
dsPIC33EP128GS808 Development Board User’s Guide
FIGURE 3-1:
EMULATED POWER SUPPLY HARDWARE
J4
PWM1L
R4
1 2 3
PWM1H
P3V3A
1k
0603
1%
C15
TP7
PWM2L
1 2 3
J5
PWM2H
1000 pF
50V
0603
R5
PWM3L
1 2 3
J6
C19
GND
1k
0603
1%
R6
1k
0603
1%
OUTA
A
GND
C17
7
5
3
1
3
8
6
4
2
1 2 3
PWM4L
JP7
GND
R7
1k
0603
1%
J7 – 1 & 2
Default Jumper Positions
Shunt 2.54 mm 1x2
VSS
+A
A
4
1
MCP6L92T-E/SN
R35
R8
0R
0603
AN0
100R
0603
1%
AGND
J8
JP8
R30
J8 – 1 & 2
Default Jumper Positions
Shunt 2.54 mm 1x2
R32
PWM8L
PWM4H
AGND
VDD
C16
0.1 µF
16V
0603
J7
8
-A
AN15
0.1 µF
16V
0603
U3A
2
10000 pF
16V
0603
PWM3H
TP5
G1
100R
0603
1%
R31
470R
0603
1%
D1
6
Q2A
1
DMG6601LVT
5
S1
470R
0603
1%
D2
4
R33
PWM8H
G2
100R
0603
1%
Q2B
3
DMG6601LVT
2
S2
P3V3
GND
C18
1 µF
16V
0603
GND
The power section on the board consists of one of the PWM outputs, depending on the
jumper installed. The default jumper position uses the JP7 jumper between Pins 1 and
2, and JP8 between Pins 1 and 2. JP7 selects PWM4L as the input to the RC circuit,
while JP8 connects the output of the RC filter to the input of the U3-A buffer. The PWM
signal, together with the RC filter, forms a power stage. Note the difference in the RC
filter values connected to jumper J8. The capacitor value changes by a factor of 10 and
can be used to emulate power supplies with a wide range of switching frequencies. The
output voltage can be monitored at test point, TP5. The range of the output voltage
varies from 0-3.3V, depending upon the reference voltage and PWM duty cycle. The
output voltage is connected to the ADC input, AN0. The DSC computes the duty cycle
based on the output voltage sample by using a digitized version of a 2P2Z filter. The
duty cycle controls the on time, during which, the output of the PWM pin is at 3.3V and
at 0V for the rest of the duration. The PWM output generates a near DC value when
passed through an RC filter.
DS50002632A-page 22
2017 Microchip Technology Inc.
Demonstration Program Operation
The load current in a power supply is dependent on the external load impedance and
could be constant or varying. The real test for a power supply is when the load
transitions from 0% to 100% or from 100% to 0% of rated current values. In a
non-regulated power supply, a load transition leads to a drastic fall/rise in the output
voltage. However, in a well regulated closed-loop system, a load transient will lead to
a smaller output voltage drop (rise) when transitioning from 0 to 100% (100 to 0%),
depending on the control design. The development board has additional hardware
provided by the Q2 MOSFET to emulate the power supply loading condition. The Q2A
and Q2B MOSFETS are controlled by signals PWM8L and PWM8H respectively. Q2A
is connected between the buffer input and GND, while Q2B is connected between the
buffer input and 3.3V. When Q2A is turned on, the buffer input gets pulled down to GND
through the R30 resistor. Depending on the duration of the PWM8L pulse, the output
voltage is pulled down from its steady-state value, thereby emulating a 0 to100%
loading condition. Figures 3-2 and 3-3 indicate the transient loading condition. The
green waveform corresponds to the PWM4L signal and the blue waveform to the buffer
output (TP5) in the following figures.
FIGURE 3-2:
2017 Microchip Technology Inc.
0 TO 100% LOADING CONDITION
DS50002632A-page 23
dsPIC33EP128GS808 Development Board User’s Guide
FIGURE 3-3:
0 TO 100% LOADING CONDITION
A load throw effect is seen when the load is suddenly switched off. During this
condition, the output voltage rises. When PWM8H is turned on for a small duration, the
input buffer gets connected to 3.3V through the R31 resistor. The output voltage
subsequently rises, as seen from Figure 3-4 and Figure 3-5. The control loop tries to
correct the situation by changing the duty cycle.
FIGURE 3-4:
DS50002632A-page 24
100 TO 0% LOADING CONDITION
2017 Microchip Technology Inc.
Demonstration Program Operation
FIGURE 3-5:
100 TO 0% LOADING CONDITION (ZOOMED)
There are additional features on the board, such as a second power loop (PWM5-6 and
U3-B) and a ramp generator (Q1), which can be used for demonstrating the Current
mode control of the power supply.
3.2
SOFTWARE DEMONSTRATION
The demonstration software provides closed-loop control of the output voltage. The
2P2Z control loop controls the converter output voltage based on the reference voltage
set by potentiometer R12. The switching frequency is fixed and set to 100 kHz.
The 2P2Z control scheme consists of the following parameters:
•
•
•
•
•
Reference – Desired set point for the output voltage
Error – Calculation of (Reference – Feedback)
System Plant – This is the converter being controlled
Output – Output voltage or current
Feedback – The measured output signal level
The demonstration program requires no manual preparation except to connect 9V to
the J1 connector or connecting a USB cable to connector J2 with the other end
connected to a laptop.
2017 Microchip Technology Inc.
DS50002632A-page 25
dsPIC33EP128GS808 Development Board User’s Guide
FIGURE 3-6:
VOLTAGE MODE CONTROL BLOCK DIAGRAM
System Plant
RC Filter
Voltage
Reference
Error
+
VOUT
2P2Z
Compensator
PWM
–
Voltage Feedback
1001011011
VOUT
Sense
K1
ADC
S&H
FIGURE 3-7:
PROGRAM FLOWCHART
Start
Initialize Peripherals
• System Clock
• I/O
• PWM
• ADC
• CMP
• Timer
Mode = Closed
Loop
Yes
Closed-Loop State Machine
No
Read
Potentiometer
R12
Calculate and
Write Duty Cycle
Switch
Press = 1
No
Yes
Enable Transient
Load Control
Switch
Press = 2
No
Yes
Disable
Transient Load
Control
DS50002632A-page 26
2017 Microchip Technology Inc.
Demonstration Program Operation
FIGURE 3-8:
CLOSED-LOOP STATE MACHINE
Idle
Restart Enabled
Fault Clear
Delay Complete
• Initialize Compensator
• Optional Delay
• Enable PWM
Soft Start
• Disable PWM
• Turn Red LED On
• Check for Fault Clear
• Increment Reference
Voltage
• Read Potentiometer R12
• Calculate Fault Threshold
• Read Potentiometer R20
• Detect Switch
• Transient Load Control
VO = Reference Voltage
Fault
VO > VHIGH
or
Vo < VLOW
Normal
2017 Microchip Technology Inc.
DS50002632A-page 27
dsPIC33EP128GS808 Development Board User’s Guide
3.3
CODE DEMONSTRATION
The software code is based on a state machine, implemented as a foreground process,
and interrupt routines are executed in the background. After the initialization phase, the
code checks for the operating mode. If it is Open-Loop mode, the output voltage is set
to the value decided by potentiometer R12. If it is Closed Loop mode, the state machine
routine is executed. There are four states in the state machine, namely Idle, Soft Start,
Normal and Fault. The details of each mode are given in the following sections.
3.3.1
System Initialization
When power is applied to the board, the program starts by executing the following
system initialization routines:
• Peripherals – The required peripherals (PWM, ADC, Comparators, Timers and
GPIO) are configured and enabled.
• Interrupts – Include ADC(s), Timer(s) and comparator(s) interrupts.
3.3.2
Modes
There are two modes of operation: Open-Loop mode and Closed-Loop mode. The
Closed-Loop mode is set as the default. In the Open-Loop mode, the output of the
PWM is set based on the value set by potentiometer R12. The Open-Loop mode does
not execute any Soft Start or Fault state, but executes a load control routine. The transient response of the supply can be monitored by pressing the SW1 switch once. This
enables the load control routine, where the transient pulses appear periodically.
In the Closed-Loop mode, the output voltage is set by the control loop based on the
reference voltage set. The Closed-Loop mode executes Idle, Soft Start, Normal and
Fault states, as shown in Figure 3-8. Load control is part of the Normal state. During
load control, if SW1 is pressed once, a transient pulse of duration LDTRANSTIME is
applied to MOSFET Q2 with a repeat duration of LDPERIOD. The default settings are
set to 1000 µs (LDTRANSTIME) and 1000 ms (LDPERIOD). Depending on the
LOADSW setting to PULLUP or PULLDOWN in the user.h file, MOSFET Q2A or Q2B is
controlled. A second press of SW1 will turn off the load control feature.
The mode can be changed by setting the variable, MODE, to either OPENLOOPDEMO or
CLOSELOOPDEMO in the user.h file.
3.3.2.1
IDLE STATE
During the Idle state, the 2P2Z compensator is initialized. The ADC reads the value of
potentiometer R12 and sets the reference voltage of the output. The PWM module and
the interrupts are enabled in this state. Once all the tasks are completed, the next state
is set to Soft Start.
3.3.2.2
SOFT START STATE
In this state, the Soft Start routine ramps up the output voltage in a closed-loop fashion
until it is at the programmed output voltage value. This routine ensures that the output
does not overshoot the desired voltage caused by a sudden inrush of current.
DS50002632A-page 28
2017 Microchip Technology Inc.
Demonstration Program Operation
3.3.2.3
NORMAL STATE
The program reaches the Normal state of operation after Soft Start is complete and
stays in this state as long as the operating parameters are within the Fault threshold.
The routine checks for a switch press to enable/disable transient pulses. The Fault
thresholds are set based on the value of the output voltage. Alternately, the Fault
thresholds can be set by potentiometer R20. This helps in changing the thresholds to
verify the Fault condition. The ADC interrupt routine runs in the background and occurs
at regular intervals of the PWM cycle (decided by the TRIG value). The ADC routine
samples the output voltage and runs the 2P2Z controller.
The 2-Pole, 2-Zero (2P2Z) controller, implemented in software, is the digital implementation of the Analog Type II controller. This filter maintains regulation of the output
voltage and ensures stability during different line/load conditions. This controller
requires three feedback errors multiplied by their associated coefficients, plus the two
latest controller output values multiplied by their associated coefficients, along the
delay line to provide proper compensation of the power converter. The control design
is carried out using the DCDT tool which can be installed as an MPLAB® X plug-in. The
DCDT supports different types of filters, such as 2P2Z, 3P3Z, PID, etc. The bode plots
of the system plant, compensator and overall system can be viewed with the DCDT
tool. The tool automatically converts the design into digital form and generates the
coefficients. The coefficient file, filterx_dcdt.h, is added as a header file to the
project. The filter routine is written in assembly language for faster execution. The
routine, smps_2p2z_dspic_v2.s, refers to the coefficient file and creates a duty
cycle based on the output voltage error.
During operation in Normal mode, the output voltage is checked against Fault thresholds. The Fault checking occurs at a fixed interval, set by Timer2, in the timer interrupt
routine. The Fault is enabled or disabled based on the value set for VLTFLTENABLED
in the user.h file. If the output voltage is beyond the thresholds, the state machine
changes state to Fault mode.
3.3.2.4
FAULT STATE
The program enters the Fault mode when the output voltage is beyond the Fault
thresholds. The PWM module is disabled immediately after entering the Fault state
routine. The red LED is lit continuously for visual indication of a Fault. Based on the
value set for RESTARTENABLED in the user.h file, the program enters Latch mode or
Restart mode. In Latch mode, the program enters an endless while loop and needs a
power recycle to start again. In the Restart mode, the routine checks for Faults to
clear and enters Idle mode to start all over again.
2017 Microchip Technology Inc.
DS50002632A-page 29
dsPIC33EP128GS808 Development Board User’s Guide
3.4
OTHER CODE EXAMPLES
There are several code examples available on the Microchip web site. One such code
example developed exclusively for this board is mentioned below. Refer to the Readme
files located in each code example folder for details on what each code example
demonstrates. Check the Microchip web site (www.microchip.com/SMPS) for the latest
updates to the code examples and for additional code examples.
3.4.1
Dual CAN Communication
The dual CAN communication code is provided to demonstrate basic control of LEDs
on the development board. The development board is connected to the
CAN/LIN/J2602 PICtail™ (Plus) Daughter Board, which is connected to the CAN host
(CAN analyzer). The CAN host communicates with both the CAN (CAN1/CAN2)
modules on the development board. Each CAN module has a specific address. The
controller on the development board reads the potentiometers R12 and R20, and
sends the value to the CAN host periodically, along with the CAN module address. The
CAN host sends specific timer values for the CAN1 and CAN2 modules, which are used
to blink the LEDs. Thus, changing the potentiometer on the development board will
change the LED blink rate based on successful CAN communication.
3.4.2
Other Code Ideas
The development board is versatile and can be programmed to test a number of
features. Most of the I/O pins are accessible on one of the several connectors on the
board. The connector pins can be used to monitor outputs, connect input signals or
provide cross connection between different controller pins. Some of the code ideas are:
•
•
•
•
•
•
•
•
•
•
•
DS50002632A-page 30
Peak Current Mode Control
Ramp Generation
ADC Reference Voltage Control
Constant Current Source
Peripheral Pin Select (PPS)
I2C Communication
PGA
PTG/CLC
PWM Signal as a Fault/Comparator Input
Fault/Current Limit
External Period Reset
2017 Microchip Technology Inc.
dsPIC33EP128GS808 DEVELOPMENT
BOARD USER’S GUIDE
Appendix A. Board Layout and Schematics
This appendix contains the schematics and board layouts for the
dsPIC33EP128GS808 Development Board.
FIGURE A-1:
2017 Microchip Technology Inc.
DEVELOPMENT BOARD LAYOUT (TOP)
DS50002632A-page 31
dsPIC33EP128GS808 Development Board User’s Guide
FIGURE A-2:
DS50002632A-page 32
DEVELOPMENT BOARD LAYOUT (BOTTOM)
2017 Microchip Technology Inc.
DEVELOPMENT BOARD SCHEMATIC (PAGE 1 OF 2)
P3V3
P9V
1
3
2
POWER 2.1 mm
R16
J3
10k
0603
1%
R17
MCLR
1
C24 1%
TP2
0.1 µF
16V
0603
RJ 25
VIN
C1
10 µF
16V
0805
470R
0603
PGED3/SDA2
PGEC3/SCL2
P5V
MIC39100-5.0WS
U1
J1
6 5 4 3 2 1
GND
VOUT
GND
1
VIN
C2
2
VOUT
GND
GND
TP1
3
C3
2
10 µF
16V
0805
GND
P3V3
MCP1703/3.3V
U2
3
GND
TP LOOP Red
LD3
GREEN
10 µF
16V
0805
R1
330R
0603
1%
GND
TP LOOP Black
GND
GND
GND
1
2
3
4
5
P5V
D3
CDBA120-G
C23
MCLR
VCAP
0.1 µF
16V
0603
0
J2
VBUS
DD+
ID
GND
GND
P3V3
C11
10 µF
25V
0805
GND
GND
P3V3A
GND
AGND
R25
4
2
3
R24
SW1
470R
0603
1%
GND
LED1
LED2
LD1
LD2
GREEN
R14
RED
R15
1k
0603
1%
1k
0603
1%
GND
GND
P3V3
20
34
35
40
41
58
60
61
55
21
AN3
CMP4A
CMP4B
DACOUT1
RB4
AN19
PGED1/SCL1
PGEC1/SDA1
PGED3/SDA2
ISRC4
76
77
78
79
56
PWM3H
PWM3L
PWM2H
PWM2L
PGEC3/SCL2
GPIO1
AN19
LED2
RD14
RB4
RE6
CMP4C
AN11
RE5
RP60
RE3
11
VSS
31
VSS
51
VSS
15
AVDD
24
AVDD
25
AVDD
LIN1CS
PWM4H
AN16
PWM4L
PWM6H
LIN2TXE
PWM5H
AN15
LIN1TX
RD9
FLT10
LIN1TXE
FLT9
DACOUT2
RD14
PWM6L
59
80
36
1
72
67
68
27
54
50
8
57
10
28
49
73
PWM8L
PWM8H
RE2
RE3
SW1
RE5
RE6
RE7
GPIO1
GPIO2
LED2
LED1
RE12
RE13
PWM7L
PWM7H
4
5
13
14
22
23
37
38
43
44
52
53
63
64
74
75
AN3/CMP1D/CMP2B/PGA2P3/RP32/RB0
OSCI/CLKI/AN6/CMP3C/CMP4A/ISRC2/RP33/RB1
OSC2/CLKO/AN0ALT/AN7/CMP3D/CMP4B/PGA1N2/RP34/RB2
PGED2/DACOUT1/AN18/ASCL2/INT0/RP35/RB3
PGEC2/ADTRG31/RP36/RB4
TD0/AN19/PGA2N2/RP37/RB5
PGED1/TDI/AN20/SCL1/RP38/RB6
PGEC1/AN21/SDA1/RP39/RB7
PGED3/SDA2/FLT31/RP40/RB8
AN4/CMP2C/CMP3A/ISRC4/RP41/RB9
AVSS
T4CK/RP64/RD0
PWM4H/RP65/RD1
AN16/RP66/RD2
PWM4L/RP67/RD3
PWM6H/RP68/RD4
AN12/RP69/RD5
PWM5H/RP70/RD6
AN15/RP71/RD7
AN5/CMP2D/CMP3B/ISRC3/RP72/RD8
SCK3/RP73/RD9
FLT10/RP74/RD10
INT4/RP75/RD11
T5CK/FLT9/RP76/RD12
DACOUT2/AN13/RD13
RD14
PWM6L/RD15
TMS/PWM3H/RP43/RB11
TCK/PWM3L/RP44/RB12
PWM2H/RP45/RB13
PWM2L/RP46/RB14
PGEC3/SCL2/RP47/RB15
6
33
45
69
62
65
66
46
47
29
30
CAN1TX
CMP4C
CMP4D
PWM5L
LIN2CS
LIN2TX
LIN2RX
CAN2TX
CAN2RX
AN11
EXTREF2
16
AN14/PGA2N3/RP60/RC12
7
FLT11/RP61/RC13
42
RP62/RC14
39
RP63/ASDA2/RC15
RP60
CAN1RX
RC14
LIN1RX
FLT12/RP48/RC0
AN8/CMP4C/PGA2P4/RP49/RC1
EXTREF1/AN9/CMP4D/RP50/RC2
PWM5L/RP51/RC3
AN1ALT/RP52/RC4
AN0ALT/RP53/RC5
AN17/RP54/RC6
RP55/ASDA1/RC7
RP56/ASCL1/RC8
AN11/PGA1N3/RP57/RC9
EXTREF2/AN10/PGA1P4/RP58/RC10
PWM8L/RE0
PWM8H/RE1
FLT17/RE2
FLT18/RE3
RE4
RE5
FLT19/RE6
FLT20/RE7
RE8
RE9
FLT21/RE10
FLT22/RE11
RE12
RE13
PWM7L/RE14
PWM7H/RE15
DS50002632A-page 33
C26
R23
0R
0603
P3V3
TP8
P3V3
C27
C12
0.1 µF
16V
0603
10 µF
25V
0805
AGND
GND
P3V3
P3V3
P3V3A
P3V3A
PWM2H
MCLR
PWM8L
CMP4D
AN2
LED1
RD9
RC14
RE7
EXTREF2
DACOUT2
ISRC4
RE2
FLT10
PWM2L
FLT9
PWM8H
J17
P3V3
P9V
CAN1TX
CAN2TX
LIN1TX
LIN1CS
LIN2TX
LIN2CS
RE12
RE13
CAN1RX
CAN2RX
LIN1RX
LIN1TXE
LIN2RX
LIN2TXE
J18
U4 PIN 48
U4 PIN 71
C4
C5
C6
C7
C8
C9
C10
0.1 µF
16V
0603
0.1 µF
16V
0603
0.1 µF
16V
0603
0.1 µF
16V
0603
0.1 µF
16V
0603
0.1 µF
16V
0603
0.1 µF
16V
0603
Pin 11
GND
Pin 31
GND
Pin 51
GND
U4 PIN 15
U4 PIN 24
U4 PIN 26
GND
AGND
U4 PIN 26
AGND
U4 PIN 25
U4 PIN 26
AGND
P5V
GND
P3V3A
U4 PIN 32
TP6
TP LOOP Black
P3V3
U4 PIN 12
DNP
TP LOOP Red
26R
GND
AN0
AN1
AN2
PWM1L
PWM1H
P3V3A
FB1
0.1 µF
16V
0603
17
18
19
3
2
Designed with
Altium.com
Board Layout and Schematics
10k
0603
1%
AN0/CMP1A/PGA1P1/RP16/RA0
AN1/CMP1B/PGA1P2/PGA2P1/RP17/RA1
AN2/CMP1C/CMP2A/PGA1P3/PGA2P2/RP18/RA2
PWM1L/RP19/RA3
PWM1H/RP20/RA4
12
VDD
32
VDD
48
VDD
71
VDD
26
P3V3
1SW1
U4 dsPIC33EP128GS808
9
MCLR
70
VCAP
29 27 25 23 21 19 17 15 13 11 9 7 5 3 1
30 28 26 24 22 20 18 16 14 12 10 8 6 4 2
USB2.0 Mini-B FEMALE
29 27 25 23 21 19 17 15 13 11 9 7 5 3 1
30 28 26 24 22 20 18 16 14 12 10 8 6 4 2
2017 Microchip Technology Inc.
FIGURE A-3:
DEVELOPMENT BOARD SCHEMATIC (PAGE 2 OF 2)
R4
P3V3A
R6
1k
0603
1%
7
5
3
1
GND
3
8
6
4
2
R32
PWM8L
PWM4H
PWM4L
1 2 3
J7
JP7
G1
GND
R7
1k
0603
1%
J7 – 1 & 2
Default Jumper Positions
Shunt 2.54 mm 1x2
100R
0603
1%
MCP6L92T-E/SN
J11
PWM6H
PWM6L
Q2A
1
PWM8H
G2
1 µF
16V
0603
C21
0.1 µF
16V
0603
P3V3
P3V3
P3V3
R2
GND
2.2k
0603
1%
-A
8
PGED1/SCL1
C13 Yes
130 pF
50V
0603
3
2
1
10k
P090S
20%
3
VSS
+A
A
0R
0603
130 pF
50V
0603
FDV301N
2
GND
GND
GND
GND
PWM1H
PWM2H
PWM3H
PWM4H
1
3
5
7
2
4
6
8
CMP4A
CMP4B
FLT9
FLT10
Default Jumper Positions
J20 – 1 & 2
Shunt 2.54 mm 1x2
DACOUT1
3
10k
P090S
20%
AGND
R21
DACOUT2
10k
0603
1%
R22
10k
0603
1%
AGND
JP22
J22
AN16
0R
0603
R26
AN3
0R
0603
Default Jumper Positions
J22 – 2 & 3
Shunt 2.54 mm 1x2
AN11
R28
J23
ISRC4
1
3
2
4
100k
0603
1%
C29
JP23
1000 pF
0603
Default Jumper Positions 50V
J23 – 1 & 2
Shunt 2.54 mm 1x2
Designed with
AGND
1
2
3
4
5
6
DNP
GND
JP20
1k
0603
1%
EXTREF2
R20
2
0R
0603
0.1 µF
16V
0603
AN19
AGND
C25
BAT54SLT1
P3V3
0R
0603
MCP6L92T-E/SN
+B
AGND
1
2017 Microchip Technology Inc.
1
GPIO2
D2 DNP
C14
R27
AGND
CMP4D
Q1
R39
7
R13
TP4
R38
3
5
AN2
4
U5B
-B
OUTB
TP3
R36
1
MCP6L92T-E/SN
P3V3A
10k
0603
1%
GPIO1
J20
6
AGND
OUTA
A
R12
J24
P3V3
2.2k
0603
1%
PGEC1/SDA1
P3V3
0.1 µF
16V
0603
U5A
2
D1 DNP GND
BAT54SLT1
R3
C28
R19
1 2 3
JP12
GND
P3V3
Default Jumper Positions
J15 – 1 & 2
Shunt 2.54 mm 1x2
AN1
100R
0603
1%
Default Jumper Positions
J12 – 1 & 2
Shunt 2.54 mm 1x2
P3V3A
AGND
JP15
+B
C18
0.1 µF
16V
0603
R18
2
4
DMG6601LVT
2
S2
C22
100R
0603
1%
1
3
R11
7
MCP6L92T-E/SN
Q2B
3
100R
0603
1%
VDD
PWM7L
OUTB
5
GND
P3V3A
PWM7H
1k
0603
1%
U3B
-B
J12
R10 GND
470R
0603
1%
D2
4
R33
DMG6601LVT
5
S1
GND
J15
C20
R31
470R
0603
1%
D1
6
100R
0603
1%
6
AN0
R30
J8 – 1 & 2
Default Jumper Positions
Shunt 2.54 mm 1x2
0.1 µF
16V
0603
4
R9
1k
0603
1%
10000 pF
16V
0603
AGND
J8
JP8
C17
VSS
+A
A
R8
1
OUTA
A
C16
PWM5L
2
1 2 3
J6
PWM3L
AGND
VDD
10000 pF
16V
0603
PWM3H
8
-A
R35
0R
0603
1
2
1k
0603
1%
PWM5H
3
U3A
J10
AN15
0.1 µF
16V
0603
3
C19
GND
2
R5
Shunt 2.54 mm 1x2
1 2 3
1000 pF
50V
0603
1 2 3
PWM2L
1 2 3
PWM2H
JP10
C15
TP7
J5
Default Jumper Positions
J10 – 1 & 2
TP5
1
1k
0603
1%
1 2 3
PWM1L
1 2 3
J4
PWM1H
Altium.com
dsPIC33EP128GS808 Development Board User’s Guide
DS50002632A-page 34
FIGURE A-4:
Board Layout and Schematics
NOTES:
2017 Microchip Technology Inc.
DS50002632A-page 35
Worldwide Sales and Service
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Tel: 631-435-6000
San Jose, CA
Tel: 408-735-9110
Tel: 408-436-4270
Canada - Toronto
Tel: 905-695-1980
Fax: 905-695-2078
DS50002632A-page 36
China - Dongguan
Tel: 86-769-8702-9880
China - Guangzhou
Tel: 86-20-8755-8029
China - Hangzhou
Tel: 86-571-8792-8115
Fax: 86-571-8792-8116
China - Hong Kong SAR
Tel: 852-2943-5100
Fax: 852-2401-3431
China - Nanjing
Tel: 86-25-8473-2460
Fax: 86-25-8473-2470
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
China - Shanghai
Tel: 86-21-3326-8000
Fax: 86-21-3326-8021
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
China - Shenzhen
Tel: 86-755-8864-2200
Fax: 86-755-8203-1760
India - New Delhi
Tel: 91-11-4160-8631
Fax: 91-11-4160-8632
India - Pune
Tel: 91-20-3019-1500
Japan - Osaka
Tel: 81-6-6152-7160
Fax: 81-6-6152-9310
Japan - Tokyo
Tel: 81-3-6880- 3770
Fax: 81-3-6880-3771
Korea - Daegu
Tel: 82-53-744-4301
Fax: 82-53-744-4302
Korea - Seoul
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
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Tel: 63-2-634-9065
Fax: 63-2-634-9069
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
Taiwan - Hsin Chu
Tel: 886-3-5778-366
Fax: 886-3-5770-955
Taiwan - Kaohsiung
Tel: 886-7-213-7830
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Taiwan - Taipei
Tel: 886-2-2508-8600
Fax: 886-2-2508-0102
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
France - Paris
Tel: 33-1-69-53-63-20
Fax: 33-1-69-30-90-79
France - Saint Cloud
Tel: 33-1-30-60-70-00
Germany - Garching
Tel: 49-8931-9700
Germany - Haan
Tel: 49-2129-3766400
Germany - Heilbronn
Tel: 49-7131-67-3636
Germany - Karlsruhe
Tel: 49-721-625370
Germany - Munich
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Germany - Rosenheim
Tel: 49-8031-354-560
Israel - Ra’anana
Tel: 972-9-744-7705
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Italy - Padova
Tel: 39-049-7625286
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Norway - Trondheim
Tel: 47-7289-7561
Poland - Warsaw
Tel: 48-22-3325737
Romania - Bucharest
Tel: 40-21-407-87-50
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
Sweden - Gothenberg
Tel: 46-31-704-60-40
Sweden - Stockholm
Tel: 46-8-5090-4654
UK - Wokingham
Tel: 44-118-921-5800
Fax: 44-118-921-5820
2017 Microchip Technology Inc.
11/07/16
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