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2014 Microchip Technology Inc. DS50002263B
dsPIC® DSC Signal Board
User’s Guide
DS50002263B-page 2 2014 Microchip Technology Inc.
Information contained in this publication regarding deviceapplications and the like is provided only for your convenienceand may be superseded by updates. It is your responsibility toensure that your application meets with your specifications.MICROCHIP MAKES NO REPRESENTATIONS ORWARRANTIES OF ANY KIND WHETHER EXPRESS ORIMPLIED, WRITTEN OR ORAL, STATUTORY OROTHERWISE, RELATED TO THE INFORMATION,INCLUDING BUT NOT LIMITED TO ITS CONDITION,QUALITY, PERFORMANCE, MERCHANTABILITY ORFITNESS FOR PURPOSE. Microchip disclaims all liabilityarising from this information and its use. Use of Microchipdevices in life support and/or safety applications is entirely atthe buyer’s risk, and the buyer agrees to defend, indemnify andhold harmless Microchip from any and all damages, claims,suits, or expenses resulting from such use. No licenses areconveyed, implicitly or otherwise, under any Microchipintellectual property rights.
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 ourproducts. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such actsallow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
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
== ISO/TS 16949 ==
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC, FlashFlex, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART, PIC32 logo, rfPIC, SST, SST Logo, SuperFlash 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, MTP, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A.
Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries.
Analog-for-the-Digital Age, Application Maestro, BodyCom, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rfLAB, Select Mode, SQI, Serial Quad I/O, Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA and Z-Scale 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.
GestIC and ULPP are registered trademarks 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.
© 2014, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 978-1-63276-235-1
Object of Declaration: dsPIC® DSC Signal Board User’s Guide
2014 Microchip Technology Inc. DS50002263B-page 3
dsPIC® DSC Signal Board
NOTES:
DS50002263B-page 4 2014 Microchip Technology Inc.
dsPIC® DSC SIGNAL BOARDUSER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 7
Chapter 1. Introduction1.1 Overview ...................................................................................................... 111.2 dsPIC DSC Signal Board Features .............................................................. 111.3 Functions ...................................................................................................... 121.4 Block Diagram .............................................................................................. 13
Chapter 2. Board Interface Description2.1 Introduction ................................................................................................... 152.2 Highlights ...................................................................................................... 152.3 Board Connectors and Headers ................................................................... 152.4 User Interface Hardware .............................................................................. 332.5 Board Test Points ......................................................................................... 36
Chapter 3. Hardware Description3.1 Introduction ................................................................................................... 393.2 Highlights ...................................................................................................... 393.3 Power Supply Circuit .................................................................................... 413.4 Voltage Reference Circuit ............................................................................ 433.5 Isolated USB Interface ................................................................................. 443.6 PIM Header Signals ..................................................................................... 453.7 Supply Voltage and Ground Connection ...................................................... 48
Appendix A. Schematics and LayoutA.1 Introduction .................................................................................................. 49A.2 Board Schematics and Layout ..................................................................... 49
Appendix B. Electrical SpecificationsB.1 Introduction .................................................................................................. 57
Appendix C. Design CalculationsC.1 Introduction .................................................................................................. 59C.2 Design of Power Supply Circuit ................................................................... 59
Worldwide Sales and Service .................................................................................... 62
2014 Microchip Technology Inc. DS50002263B-page 5
dsPIC® DSC Signal Board
NOTES:
DS50002263B-page 6 2014 Microchip Technology Inc.
dsPIC® DSC SIGNAL BOARD
USER’S GUIDEPreface
INTRODUCTION
This chapter contains general information that will be useful to know before using the dsPIC® DSC Signal Board. Items discussed in this chapter include:
• Document Layout• Conventions Used in this Guide• Recommended Reading• The Microchip Web Site• Development Systems Customer Change Notification Service• Customer Support• Document Revision History
DOCUMENT LAYOUT
This document describes how to use the dsPIC DSC Signal Board as a development tool to emulate and debug firmware on a target board. This user’s guide is composed of the following chapters:
• Chapter 1. “Introduction” provides the features and functions of the dsPIC DSC Signal Board.
• Chapter 2. “Board Interface Description” describes the dsPIC DSC Signal Board input and output interfaces.
• Chapter 3. “Hardware Description” provides the hardware descriptions of the dsPIC DSC Signal Board.
• Appendix A. “Schematics and Layout” provides board layouts and detailed schematics of the dsPIC DSC Signal Board.
• Appendix B. “Electrical Specifications” provides the electrical specifications of the dsPIC DSC Signal Board.
• Appendix C. “Design Calculations” provides the design calculations of the dsPIC DSC Signal Board.
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.
2014 Microchip Technology Inc. DS50002263B-page 7
dsPIC® DSC Signal Board
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
WARRANTY REGISTRATION
Please complete the enclosed Warranty Registration Card and mail it promptly. Sending in the Warranty Registration Card entitles users to receive new product updates. Interim software releases are available at the Microchip web site.
DOCUMENTATION CONVENTIONS
Description Represents Examples
Italic characters Referenced books MPLAB® IDE User’s Guide
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
Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>
Plain Courier New 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){ ...}
Notes A Note presents information that we want to re-emphasize, either to help you avoid a common pitfall or to make you aware of operating differences between some device family members. A Note can be in a box, or when used in a table or figure, it is located at the bottom of the table or figure. Note 1: This is a note used in a
table.
Note: This is a standard note box.
CAUTION
This is a caution note.
DS50002263B-page 8 2014 Microchip Technology Inc.
Preface
RECOMMENDED READING
This user’s guide describes how to use the starter kit. The following Microchip documents are available and recommended as supplemental reference resources.
MPLAB® X IDE User’s Guide (DS50002027)
This user’s guide is a comprehensive guide that describes installation and features of Microchip’s MPLAB X Integrated Development Environment (IDE), as well as the editor and simulator functions in the MPLAB X IDE environment.
Readme Files
For the latest information on using other tools, read the tool-specific Readme files in the Readme subdirectory of the MPLAB X IDE installation directory. The Readme files contain updated information and known issues that may not be included in this user’s guide.
MPLAB® XC16 Assembler, Linker and Utilities User’s Guide (DS52106)
This user’s guide describes how to use GNU language tools to write code for 16-bit applications.
MPLAB XC16 C Compiler User’s Guide (DS50002071)
This user’s guide describes how to use the 16-bit MPLAB XC16 C Compiler. Please visit www.microchip.com/compilers for more information.
dsPIC33EV256GM106 5V Motor Control Plug-In Module (PIM) Information Sheet (DS50002225)
This information sheet provides information specific to the dsPIC33EV256GM106 5V Motor Control Plug-In Module (PIM).
dsPIC33EP512GM710 Plug-In Module (PIM) Information Sheet for Single-Dual Motor Control (DS50002216)
This information sheet provides information specific to the dsPIC33EP512GM710 Plug-In Module (PIM) for Single-Dual Motor Control.
Motor Control 10-24V Driver Board (Dual/Single) User’s Guide (DS50002261)
This user’s guide describes how to use Microchip’s Motor Control 10-24V Driver Board (Dual/Single).
THE MICROCHIP WEB SITE
Microchip provides online support via our web site at http://www.microchip.com. This web site makes files and information easily available to customers. Accessible by most Internet browsers, 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 listings
• Business of Microchip – Product selector and ordering guides, latest Microchip press releases, listings of seminars and events; and listings of Microchip sales offices, distributors and factory representatives
2014 Microchip Technology Inc. DS50002263B-page 9
dsPIC® DSC Signal Board
DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE
Microchip’s customer notification service helps keep customers current on Microchip products. Subscribers will receive e-mail notification 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 Customer Change Notification and follow the registration instructions.
The Development Systems product group categories are:
• Compilers – The latest information on Microchip C compilers and other language tools
• Emulators – The latest information on the Microchip in-circuit emulator, MPLAB REAL ICE™
• In-Circuit Debuggers – The latest information on the Microchip in-circuit debugger, MPLAB ICD 3
• MPLAB X IDE – The latest information on Microchip MPLAB X IDE, the Windows® Integrated Development Environment for development systems tools
• Programmers – The latest information on Microchip programmers including the PICkit™ 3 development programmer
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
• Distributor or Representative
• Local Sales Office
• Field Application Engineer (FAE)
• Technical Support
Customers should contact their distributor, representative or field application engineer (FAE) 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://support.microchip.com
DOCUMENT REVISION HISTORY
Revision A (April 2014)
This is the initial release of this document.
Revision B (May 2014)
• Note added to Figure C-1.
• Note reference added to Section C.2.1 “First Stage of Power Supply Circuit Design” in Appendix C. “Design Calculations”.
• Changes in values made to Table C-2.
DS50002263B-page 10 2014 Microchip Technology Inc.
dsPIC® DSC SIGNAL BOARD
USER’S GUIDEChapter 1. Introduction
1.1 OVERVIEW
This chapter describes the features and functions of the dsPIC® DSC Signal Board.
The dsPIC DSC Signal Board is a general purpose development board which provides the dsPIC DSC signal connections to application boards, along with user interfaces. The board supports both +3.3V and +5V operated devices for various applications. The board has some frequently used user interface features, along with two major connec-tors: a 120-pin connector and a 60-pin connector to enable connection to plug-in boards. The 120-pin connector is connected to all PIM header pins, power supply sig-nals and various grounds. The 60-pin connector allows expansion for communication, enhanced interfacing and light power applications.
1.2 dsPIC DSC SIGNAL BOARD FEATURES
The dsPIC DSC Signal Board is shown in Figure 1-1. The board includes these key features:
• Interfaces:
- 120-pin power board interface connector for power application board (J13)
- 60-pin expansion connector for add-on boards (J7)
- 30-pin connector for signal monitoring or expansion (J4)
- 30-pin connector for signal monitoring or expansion (J5)
- 100/105-pin PIM header (U2A, U2B, U2C, U2D, U2E) support microcontrollerand dsPIC DSC’s Plug-in Module (PIM) with internal or external op ampconfiguration
• User Interfaces:
- Reset push button (SW0)
- Four push buttons (SW1-SW4)
- Two 10 k potentiometers (POT1 and POT2)
- Four LED indicators for debugging (LD1-LD4)
- Two power-on status LEDs (LD5, LD6)
- Two LED indicators for USB communications (LD7, LD8)
• Communication Ports:
- UART communication through USB (isolated) (J3)
- SPI interface (J8)
- PICkit™ serial analyzer (SPI protocol) interface (J10)
- PICkit serial analyzer interface (I2C™ protocol) (J12)
• Power Supply Connectors:
- 24V power input connector (J17)
• Programming Connectors:
- ICSP™ connector for programming the dsPIC DSC or microcontroller (J1)
- RJ11 connector for programming the dsPIC DSC or microcontroller (J2)
2014 Microchip Technology Inc. DS50002263B-page 11
dsPIC® DSC Signal Board
• Test Points:
- 20 test points (TP1-TP20) provided on the board for debugging and measurement
• Power:
- DC+, EXT DC+, DC24V, +5V, DVDD, AVDD
• Ground:
- Digital Ground (DGND), Analog Ground (AGND), Power Ground (PGND)
FIGURE 1-1: dsPIC® DSC SIGNAL BOARD
1.3 FUNCTIONS
The dsPIC DSC Signal Board has the following functions:
• Supports application power boards connected to the J13 and J7 connectors
• Experiments with functionality of devices on the PIM header
• Provides on-board user interface-like switches, LEDs and potentiometers
• Communicates with a host computer or external device through isolated USB, I2Cand SPI interfaces
• Provides auxiliary power supply (DVDD = +3.3V or +5V) to various devices usedon the dsPIC DSC Signal Board, as well as plug-in boards
• Provides a prototyping area for user circuit development or implementation
®
DS50002263B-page 12 2014 Microchip Technology Inc.
Introduction
1.4 BLOCK DIAGRAM
A simplified block diagram of the dsPIC DSC Signal Board is shown in Figure 1-2.
FIGURE 1-2: dsPIC® DSC SIGNAL BOARDBLOCK DIAGRAM
Power Supply 2
(selectable)
4 LEDs
Two 10 kPOTs
SPI Header(J8) (J1, J2)
PIM Header U2
(105/100 Pins)
60-Pin
C
O
N
N
E
C
T
O
R
(J7)
Input Jack(J17)
120-Pin Connector (J13)
+5V
DVDDDC+
DVDD
DVDD
+5V
+5V
DC+
DC+
Power Supply 1(Fixed +5V)
U
2
A
ICSP Interface
SW0 ResetU2D
U
2
C
U2B
U
2
E
DVDD = +3.3V/+5V
Isolated USB/UARTInterface (J3)
ReferenceVoltage
PICkit™ Serial
Analyzer I2C™/SPIInterface (J10/J12)
SW1
SW2
SW3
SW4
Low-Pass Filters
2014 Microchip Technology Inc. DS50002263B-page 13
dsPIC® DSC Signal Board
NOTES:
DS50002263B-page 14 2014 Microchip Technology Inc.
dsPIC® DSC SIGNAL BOARD
USER’S GUIDEChapter 2. Board Interface Description
2.1 INTRODUCTION
This chapter provides a more detailed description of the input and output interfaces of the dsPIC® DSC Signal Board.
2.2 HIGHLIGHTS
This chapter covers the following topics:
• Board Connectors and Headers
• User Interface Hardware
• Board Test Points
2.3 BOARD CONNECTORS AND HEADERS
The dsPIC DSC Signal Board contains various connectors and headers.
The on-board hardware connectors are provided in Table 2-1. Figure 2-1 shows different on-board connectors.
TABLE 2-1: BOARD CONNECTORS
DesignatorNumber of
PinsDescription
J1 6 ICSP™ connector for programming a dsPIC® DSC or microcontroller
J2 6 RJ11, 6-pin connector for programming a dsPIC DSC or microcontroller
J3 5 Isolated USB interface port
J4 30 Odd number pin connection from connector, J7(1)
J5 30 Even number pin connection from connector, J7(1)
J6 4 Isolated UART interface
J7 60 Connector for expansion board interface(1)
J8 6 Header for SPI interface
J9 2 UART TX/RX inputs
J10 6 Header for PICkit™ serial analyzer (SPI interface)
J12 6 Header for PICkit serial analyzer (I2C™ interface)
J13 120 Power board interface connector for application boards
J17 2 Input power supply connector (24V)
Note 1: See Table 2-12 and Table 2-14 for connection details.
2014 Microchip Technology Inc. DS50002263B-page 15
dsPIC® DSC Signal Board
FIGURE 2-1: dsPIC® DSC SIGNAL BOARD CONNECTORS
The on-board headers and connectors are described in the following sections:
• PIM Header
• PICkit Programming Header (J1)
• MPLAB ICD 3 or REAL ICE™ In-Circuit Emulator Connector (J2)
• Isolated USB Interface (J3)
• Alternate USB/UART Interface (J6)
• SPI Interface Connector (J8)
• Additional UART TX/RX Inputs (J9)
• PICkit Serial Analyzer SPI Interface
• Input Power Connector (J17)
• Power Board Interface Connector (J13)
• Expansion Board Connector (J4, J5 and J7)
J17
J1
J12
J10
J8
J9
J4
J5
J7
J13
J2 J3
J6
®
DS50002263B-page 16 2014 Microchip Technology Inc.
Board Interface Description
2.3.1 PIM Header
The dsPIC DSC Signal Board has been designed to accommodate detachable Plug-in Modules (PIMs). The board supports 105-pin PIMs and it is also backward compatible with some of the 100-pin PIMs. The PIM pinout and function on the dsPIC DSC Signal Board, and the respective connectors are provided in Table 2-2.
TABLE 2-2: dsPIC® DSC SIGNAL BOARD PIM PINOUT FUNCTIONALITY
PIMPin #
Signal Name Functional Description FilterConnectors
J13 J7 J4 J5
1 PIM:01_PWR:B8_EXP:01 Debug LED 1 No B8 01 01 —
2 DVDD Digital Voltage (+3.3V/+5V) — — — — —
3 PIM:03_PWR:A8_EXP:49 — No A8 49 49 —
4 PIM:04_PWR:C7_EXP:02 — No C7 02 — 02
5 PIM:05_PWR:B7_EXP:03 — No B7 03 03 —
6 PIM:06_PWR:A7_EXP:04 — No A7 04 — 04
7 PIM:07_PWR:C6_EXP:05 — No C6 05 05 —
8 PIM:08_PWR:B6_EXP:06 — No B6 06 — 06
9 PIM:09_PWR:A6_EXP:07 — No A6 07 07 —
10 PIM:10_PWR:C5 — No C5 — — —
11 PIM:11_PWR:B5_EXP:08_FLT — Yes B5 08 — 08
12 PIM:12_PWR:A5_EXP:09 — No A5 09 09 —
13 PIM:13 (MCLR) Device Master Clear (MCLR) No — 25 25 —
14 PIM:14_PWR:A38_FLT — Yes A38 — — —
15 DGND Digital Ground — — — — —
16 DVDD Digital Voltage (+3.3V/+5V) — — — — —
17 PIM:17_PWR:C37_FLT — Yes C37 — — —
18 PIM:18_PWR:B37_EXP:55 — No B37 55 55 —
19 PIM:19_PWR:A37_EXP:10 — No A37 10 — 10
20 PIM:20_PWR:C36_FLT — Yes C36 — — —
21 PIM:21_PWR:B36_FLT — Yes B36 — — —
22 PIM:22_PWR:A36_FLT — Yes A36 — — —
23 PIM:23_PWR:C35_EXP:11_FLT Potentiometer 2 Yes C35 11 11 —
24 PIM:24_PWR:B35_FLT — Yes B35 — — —
25 PIM:25_PWR:A35_FLT — Yes A35 — — —
26 PIM:26_PWR:C34_EXP:41 Device Programming Clock Line (PGC) No C34 41 41 —
27 PIM:27_PWR:B34_EXP:42 Device Programming Data Line (PGD) No B34 42 — 42
28 PIM:28_PWR:A34 Reference Voltage (VREF) No A34 — — —
29 PIM:29_PWR:C33_EXP:12 — No C33 12 — 12
30 AVDD Analog Voltage (+3.3V/+5V) — — — — —
31 AGND Analog Ground — — — — —
32 PIM:32_PWR:B33_EXP:13_FLT Potentiometer 1 Yes B33 13 13 —
Note 1: Signal PIM:69 has two functions. This signal is connected to Switch S1 and the PICkit™ serial analyzer header, J12. When connector J15 is open, PIM:69 is connected to the PICkit serial analyzer I2C™ interface. However, when connector J15 is shorted, PIM:69 is connected to switch SW1.
2: Signal PIM:49 has two functions. This signal is connected to the UART Transmit Pin 6 of the digital isolator, U3, and the PICkit serial analyzer header, J12. When connector J11 is open, PIM:49 is connected to the PICkit serial analyzer I2C interface. However, when connector J11 is shorted, PIM:49 is connected to the TX pin of the digital isolator, U3.
2014 Microchip Technology Inc. DS50002263B-page 17
dsPIC® DSC Signal Board
33 PIM:33_PWR:A33_EXP:14 Debug LED 3 No A33 14 — 14
34 PIM:34_PWR:C32_EXP:15 Debug LED 4 No C32 15 15 —
35 PIM:35_PWR:B32_FLT — Yes B32 — — —
36 DGND Digital Ground — — — — —
37 DVDD Digital Voltage (+3.3V/+5V) — — — — —
38 PIM:38_PWR:A32_EXP:16 — No A32 16 — 16
39 PIM:39_PWR:C31_EXP:17 — No C31 17 17 —
40 PIM:40_PWR:B31_EXP:18 Push Button SW3 No B31 18 — 18
41 PIM:41_PWR:A31_EXP:56 Push Button SW4 No A31 56 — 56
42 PIM:42_PWR:C29 — No C29 — — —
43 PIM:43_PWR:B29 — No B29 — — —
44 PIM:44_PWR:A29 — No A29 — — —
45 DGND Digital Ground — — — — —
46 DVDD Digital Voltage (+3.3V/+5V) — — — — —
47 PIM:47_PWR:C28_EXP:19 — No C28 19 19 —
48 PIM:48_PWR:B28_EXP:20 — No B28 20 — 20
49 PIM:49_PWR:A28_EXP:21(2) UART Receive/I2C PICkit Interface No A28 21 21 —
50 PIM:50_PWR:C27_EXP:22 UART Transmit No C27 22 — 22
51 PIM:51_PWR:B27_EXP:58 — No B27 58 — 58
52 PIM:52_PWR:A27_EXP:59 — No A27 59 59 —
53 PIM:53_PWR:C26 — No C26 — — —
54 PIM:54_PWR:B26_FLT — Yes B26 — — —
55 PIM:55_PWR:A26_FLT — Yes A26 — — —
56 PIM:56_PWR:C25_FLT — Yes C25 — — —
57 PIM:57_PWR:B25_FLT — Yes B25 — — —
58 PIM:58_PWR:A25 — No A25 — — —
59 PIM:59_PWR:B24_EXP:57 Debug LED 2 No B24 57 57 —
60 PIM:60_PWR:A24_EXP:60 — No A24 60 — 60
61 PIM:61_PWR:C23_EXP:24 — No C23 24 — 24
62 DVDD Digital Voltage (+3.3V/+5V) — — — — —
63 PIM:63 (OSC1) Crystal Oscillator In (OSC1) — — — — —
64 PIM:64 (OSC2) Crystal Oscillator Out (OSC2) — — — — —
65 DGND Digital Ground — — — — —
66 PIM:66_PWR:C22_FLT — Yes C22 — — —
67 PIM:67_PWR:B22_FLT — Yes B22 — — —
68 PIM:68_PWR:A22 — No A22 — — —
69 PIM:69_PWR:A15_EXP:28_FLT_PICkit(1) Push Button SW1/I2C PICkit Interface Yes A15 28 — 28
70 PIM:70_PWR:A21 — No A21 — — —
TABLE 2-2: dsPIC® DSC SIGNAL BOARD PIM PINOUT FUNCTIONALITY (CONTINUED)
PIMPin #
Signal Name Functional Description FilterConnectors
J13 J7 J4 J5
Note 1: Signal PIM:69 has two functions. This signal is connected to Switch S1 and the PICkit™ serial analyzer header, J12. When connector J15 is open, PIM:69 is connected to the PICkit serial analyzer I2C™ interface. However, when connector J15 is shorted, PIM:69 is connected to switch SW1.
2: Signal PIM:49 has two functions. This signal is connected to the UART Transmit Pin 6 of the digital isolator, U3, and the PICkit serial analyzer header, J12. When connector J11 is open, PIM:49 is connected to the PICkit serial analyzer I2C interface. However, when connector J11 is shorted, PIM:49 is connected to the TX pin of the digital isolator, U3.
DS50002263B-page 18 2014 Microchip Technology Inc.
Board Interface Description
71 PIM:71_PWR:B19_FLT — Yes B19 — — —
72 PIM:72_PWR:A19 — No A19 — — —
73 PIM:73_PWR:C18_FLT — Yes C18 — — —
74 PIM:74_PWR:B18_FLT — Yes B18 — — —
75 DGND Digital Ground - — — —
76 PIM:76_PWR:B17_FLT — Yes B17 — — —
77 PIM:77_PWR:A17_FLT — Yes A17 — — —
78 PIM:78_PWR:C16_EXP:26 PICkit SPI Interface Data Out No C16 26 — 26
79 PIM:79_PWR:B16_FLT — Yes B16 — — —
80 PIM:80_PWR:A16_EXP:27 — No A16 27 27 —
81 PIM:81_PWR:C15_FLT — Yes C15 — — —
82 PIM:82_PWR:B15 — No B15 — — —
83 PIM:83_PWR:B21_FLT — Yes B21 — — —
84 PIM:84_PWR:C14_EXP:29_FLT Push Button SW2 Yes C14 29 29 —
85 PIM:85_PWR:B14 — No B14 — — —
86 DVDD Digital Voltage (+3.3V/+5V) — — — — —
87 PIM:87_PWR:A14_EXP:30 PICkit SPI Clock No A14 30 — 30
88 PIM:88_PWR:C13_EXP:31 PICkit SPI Interface Data In No C13 31 31 —
89 PIM:89_PWR:B13 — No B13 — — —
90 PIM:90_PWR: A13 — No A13 — — —
91 PIM:91_PWR:C12_EXP:32 PICkit SPI Interface CS No C12 32 — 32
92 PIM:92_PWR:B12 — No B12 — — —
93 PIM:93_PWR:A12_EXP:46 — No A12 46 — 46
94 PIM:94_PWR:C11_EXP:45 — No C11 45 45 —
95 PIM:95_PWR:B11 — No B11 — — —
96 PIM:96_PWR:A11 — No A11 — — —
97 PIM:97_PWR:C9_EXP:23_FLT — Yes C9 23 23 —
98 PIM:98_PWR:B9_EXP:48 — No B9 48 — 48
99 PIM:99_PWR:A9_EXP:47 — No A9 47 47 —
100 PIM:100_PWR:C8_EXP:50 — No C8 50 — 50
101 PIM:101 Reference Voltage (VREF) No C24 — — —
102 PIM:102 Reference Voltage (VREF) No C21 — — —
103 PIM:103 Reference Voltage (VREF) No C19 — — —
104 PIM:104 Reference Voltage (VREF) No A18 — — —
105 PIM:105_PWR:C17 — No C17 — — —
TABLE 2-2: dsPIC® DSC SIGNAL BOARD PIM PINOUT FUNCTIONALITY (CONTINUED)
PIMPin #
Signal Name Functional Description FilterConnectors
J13 J7 J4 J5
Note 1: Signal PIM:69 has two functions. This signal is connected to Switch S1 and the PICkit™ serial analyzer header, J12. When connector J15 is open, PIM:69 is connected to the PICkit serial analyzer I2C™ interface. However, when connector J15 is shorted, PIM:69 is connected to switch SW1.
2: Signal PIM:49 has two functions. This signal is connected to the UART Transmit Pin 6 of the digital isolator, U3, and the PICkit serial analyzer header, J12. When connector J11 is open, PIM:49 is connected to the PICkit serial analyzer I2C interface. However, when connector J11 is shorted, PIM:49 is connected to the TX pin of the digital isolator, U3.
2014 Microchip Technology Inc. DS50002263B-page 19
dsPIC® DSC Signal Board
2.3.2 PICkit Programming Header (J1)
A 6-pin header J1 connects the MPLAB PICkit 3 development programmer to the dsPIC DSC or microcontroller for programming and debugging (see Table 2-3).
2.3.3 MPLAB ICD 3 or REAL ICE™ In-Circuit Emulator Connector (J2)
An RJ11 female connector J2 connects the MPLAB In-Circuit Debugger/Emulator (MPLAB ICD 3 or REAL ICE) to the dsPIC DSC or microcontroller for programming and debugging (see Table 2-4).
2.3.4 Isolated USB Interface (J3)
The dsPIC DSC Signal Board uses an on-board MCP2200 device (see U2 in Figure A-3) as a bridge between the UART and USB (see Table 2-5).
TABLE 2-3: PICkit™ PROGRAMMING HEADER (J1) PIN DESCRIPTION
Pin # Signal Name Pin Description
1 PIM:13 (MCLR) Device Master Clear (MCLR)
2 DVDD Digital Supply Voltage
3 DGND Digital Ground
4 PIM:27_PWR:B34_EXP:42 Device Programming Data Line (PGD)
5 PIM:26_PWR:C34_EXP:41 Device Programming Clock Line (PGC)
6 No Connection —
TABLE 2-4: MPLAB® ICD 3/REAL ICE™ CONNECTOR (J2) PIN DESCRIPTION
Pin # Signal Name Pin Description
1 PIM:13 (MCLR) Device Master Clear (MCLR)
2 DVDD Digital Supply Voltage
3 DGND Digital Ground
4 PIM:27_PWR:B34_EXP:42 Device Programming Data Line (PGD)
5 PIM:26_PWR:C34_EXP:41 Device Programming Clock Line (PGC)
6 No Connection —
TABLE 2-5: ISOLATED USB INTERFACE (J3) PIN DESCRIPTION
Pin # Signal Name Pin Description
0 No Connection Body Connection
1 5V_USB USB +5V DC
2 USB_N USB Data-
3 USB_P USB Data+
4 No Connection —
5 GND_USB USB Ground
DS50002263B-page 20 2014 Microchip Technology Inc.
Board Interface Description
2.3.5 Alternate USB/UART Interface (J6)
A 4-pin header J6 provides a provision to bypass the MCP2200 device (see U3 in Figure A-3) and connect an alternate UART/USB interface device (see Table 2-6).
2.3.6 SPI Interface Connector (J8)
A 6-pin header J8 provides the connection for the Serial Peripheral Interface (SPI) communication (see Table 2-7).
2.3.7 Additional UART TX/RX Inputs (J9)
A 2-pin header, J9, connects the input of the digital isolator, ADUM1201CRZ (see U3 in Figure A-3). Connector J9 can be used to connect external provided UART signals TX/RX (see Table 2-8).
2.3.8 PICkit Serial Analyzer SPI Interface
A 6-pin header J10 connects the PICkit serial analyzer to a dsPIC DSC or microcontroller supporting SPI protocol (see Table 2-9).
TABLE 2-6: ALTERNATE USB/UART INTERFACE (J6) PIN DESCRIPTION
Pin # Signal Name Pin Description
1 5V_USB USB +5V DC
2 MCP2200_RX Isolated UART Receive
3 MCP2200_TX Isolated UART Transmit
4 GND_USB USB Ground
TABLE 2-7: SPI INTERFACE CONNECTOR (J8) PIN DESCRIPTION
Pin # Signal Name Pin Description
1 DVDD Digital Supply Voltage
2 DGND Digital Ground
3 DGND Digital Ground
4 PIM:87_PWR:A14_EXP:30 SPI Clock
5 PIM:91_PWR:C12_EXP:32 SPI Interface CS
6 PIM:88_PWR:C13_EXP:31 SPI Interface Data
TABLE 2-8: ADDITIONAL UART TX/RX INPUTS (J9) PIN DESCRIPTION
Pin # Signal Name Pin Description
1 PIM:49_PWR:A28_EXP:21 UART Receive
2 PIM:50_PWR:C27_EXP:22 UART Transmit
TABLE 2-9: PICkit™ SERIAL ANALYZER SPI INTERFACE (J10) PIN DESCRIPTION
Pin # Signal Name Pin Description
1 PIM:91_PWR:C12_EXP:32 PICkit SPI Interface CS
2 DVDD Digital Supply Voltage
3 DGND Digital Ground
4 PIM:88_PWR:C13_EXP:31 PICkit SPI Interface Data In
5 PIM:87_PWR:A14_EXP:30 PICkit SPI Clock
6 PIM:78_PWR:C16_EXP:26 PICkit SPI Interface Data Out
2014 Microchip Technology Inc. DS50002263B-page 21
dsPIC® DSC Signal Board
2.3.9 PICkit Serial Analyzer I2C Interface (J12)
A 6-pin header J12 connects the MPLAB PICkit serial analyzer to a dsPIC DSC or microcontroller supporting I2C protocol (see Table 2-10).
2.3.10 Input Power Connector (J17)
The dsPIC DSC Signal Board receives the input from a 9V-24V power supply. It is connected to the board through connector J17 (see Table 2-11).
TABLE 2-10: PICkit™ SERIAL ANALYZER I2C INTERFACE (J12) PIN DESCRIPTION
Pin # Signal Name Pin Description
1 No Connection —
2 DVDD Digital Supply Voltage
3 DGND Digital Ground
4 PIM:69_PWR:A15_EXP:28_FLT_PICkit PICkit I2C™ Interface Serial Data
5 PIM:49_PWR:A28_EXP:21 PICkit I2C Interface Serial Clock Interface
6 No Connection —
TABLE 2-11: INPUT POWER CONNECTOR (J17) PIN DESCRIPTION
Pin # Signal Name Pin Description
1 EXT DC+ Input Supply Voltage
3 DGND Digital Ground
3 DGND Digital Ground
DS50002263B-page 22 2014 Microchip Technology Inc.
Board Interface Description
2.3.11 Power Board Interface Connector (J13)
A 120-pin interface connector, J13, is used to interface the dsPIC DSC Signal Board with the dedicated power application board. All the signals from the PIM header are routed to this connector. It also has a connection to the input DC bus, supply voltages (+3.3V/+5V) and op amp reference signals.
Table 2-12 and Table 2-13 describe the J13 connector on-board pin functions. In Table 2-12, the J13 connector pins are tabulated in order of their number, whereas in Table 2-13, signals on connector J13 are grouped according to their functionality.
TABLE 2-12: dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT
Connector J13
Signal Name PIM Connection/Functional Description PIM Pin
A1 DC+ Input DC Bus Voltage —
B1 DC+ Input DC Bus Voltage —
C1 DC+ Input DC Bus Voltage —
A2 PGND Power Ground —
B2 PGND Power Ground —
C2 PGND Power Ground —
A3 +5V Fixed +5V —
B3 +5V Fixed +5V —
C3 AGND Analog Ground —
A4 AVDD(4) Analog Voltage (+3.3V/+5V) —
B4 AVDD(4) Analog Voltage (+3.3V/+5V) —
C4 AGND Analog Ground —
A5 PIM:12_PWR:A5_EXP:09 Direct Connection 12
B5 PIM:11_PWR:B5_EXP:08 Filter Signal 11
C5 PIM:10_PWR:C5 Direct Connection 10
A6 PIM:09_PWR:A6_EXP:07 Direct Connection 9
B6 PIM:08_PWR:B6_EXP:06 Direct Connection 8
C6 PIM:07_PWR:C6_EXP:05 Direct Connection 7
A7 PIM:06_PWR:A7_EXP:04 Direct Connection 6
B7 PIM:05_PWR:B7_EXP:03 Direct Connection 5
C7 PIM:04_PWR:C7_EXP:02 Direct Connection 4
A8 PIM:03_PWR:A8_EXP:49 Direct Connection 3
B8 PIM:01_PWR:B8_EXP:01 Direct Connection – Debug LED(1) 1
C8 PIM:100_PWR:C8_EXP:50 Direct Connection 100
A9 PIM:99_PWR:A9_EXP:47 Direct Connection 99
B9 PIM:98_PWR:B9_EXP:48 Direct Connection 98
C9 PIM:97_PWR:C9_EXP:23 Filter Signal 97
A10 DGND Digital Ground —
B10 DGND Digital Ground —
C10 DGND Digital Ground —
A11 PIM:96_PWR:A11 Direct Connection 96
Note 1: Direct connection identifies the connection between the J13 connector pins and PIM pins that do not havean analog filter at their input.
2: Filter signal identifies the connection between the J13 connector pins and PIM pins that have an analog filter.
3: DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
4: AVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
2014 Microchip Technology Inc. DS50002263B-page 23
dsPIC® DSC Signal Board
B11 PIM:95_PWR:B11 Direct Connection 95
C11 PIM:94_PWR:C11_EXP:45 Direct Connection 94
A12 PIM:93_PWR:A12_EXP:46 Direct Connection 93
B12 PIM:92_PWR:B12 Direct Connection 92
C12 PIM:91_PWR:C12_EXP:32 Direct Connection – PICkit™ SPI Interface CS 91
A13 PIM:90_PWR: A13 Direct Connection 90
B13 PIM:89_PWR:B13 Direct Connection 89
C13 PIM:88_PWR:C13_EXP:31 Direct Connection – PICkit SPI Interface Data In 88
A14 PIM:87_PWR:A14_EXP:30 Direct Connection – PICkit SPI Clock 87
B14 PIM:85_PWR:B14 Direct Connection 85
C14 PIM:84_PWR:C14_EXP:29 Filter Signal – Push Button SW2 84
A15 PIM:69_PWR:A15_EXP:28 Filter Signal – Push Button SW1/I2C™ PICkit Interface 69
B15 PIM:82_PWR:B15 Direct Connection 82
C15 PIM:81_PWR:C15 Filter Signal 81
A16 PIM:80_PWR:A16_EXP:27 Direct Connection 80
B16 PIM:79_PWR:B16 Filter Signal 79
C16 PIM:78_PWR:C16_EXP:26 Direct Connection – PICkit SPI Interface Data Out 78
A17 PIM:77_PWR:A17 Filter Signal 77
B17 PIM:76_PWR:B17 Filter Signal 76
C17 PIM:105_PWR:C17 Direct Connection 105
A18 PIM:104_PWR:A18 Direct Connection – Reference Voltage (VREF) 104
B18 PIM:74_PWR:B18 Filter Signal 74
C18 PIM:73_PWR:C18 Filter Signal 73
A19 PIM:72_PWR:A19 Direct Connection 72
B19 PIM:71_PWR:B19 Filter Signal 71
C19 PIM:103_PWR:C19 Direct Connection – Reference Voltage (VREF) 103
A20 DGND Digital Ground —
B20 DGND Digital Ground —
C20 DGND Digital Ground -
A21 PIM:70_PWR:A21 Direct Connection 70
B21 PIM:83_PWR:B21 Filter Signal 83
C21 PIM:102_PWR:C21 Direct Connection – Reference Voltage (VREF) 102
A22 PIM:68_PWR:A22 Direct Connection 68
B22 PIM:67_PWR:B22 Filter Signal 67
C22 PIM:66_PWR:C22 Filter Signal 66
A23 DGND Through 0 Resistor (R73) —
B23 DGND Through 0 Resistor (R70) —
C23 PIM:61_PWR:C23_EXP:24 Direct Connection 61
A24 PIM:60_PWR:A24_EXP:60 Direct Connection 60
B24 PIM:59_PWR:B24_EXP:57 Direct Connection – Debug LED(2) 59
TABLE 2-12: dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (CONTINUED)
Connector J13
Signal Name PIM Connection/Functional Description PIM Pin
Note 1: Direct connection identifies the connection between the J13 connector pins and PIM pins that do not havean analog filter at their input.
2: Filter signal identifies the connection between the J13 connector pins and PIM pins that have an analog filter.
3: DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
4: AVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
DS50002263B-page 24 2014 Microchip Technology Inc.
Board Interface Description
C24 PIM:101_PWR:C24 Direct Connection – Reference Voltage (VREF) 101
A25 PIM:58_PWR:A25 Direct Connection 58
B25 PIM:57_PWR:B25 Filter Signal 57
C25 PIM:56_PWR:C25 Filter Signal 56
A26 PIM:55_PWR:A26 Filter Signal 55
B26 PIM:54_PWR:B26 Filter Signal 54
C26 PIM:53_PWR:C26 Direct Connection – UART Transmit 53
A27 PIM:52_PWR:A27_EXP:59 Direct Connection 52
B27 PIM:51_PWR:B27_EXP:58 Direct Connection 51
C27 PIM:50_PWR:C27_EXP:22 Direct Connection 50
A28 PIM:49_PWR:A28_EXP:21 Direct Connection – UART Receive/I2C™ PICkit™ Interface 49
B28 PIM:48_PWR:B28_EXP:20 Direct Connection 48
C28 PIM:47_PWR:C28_EXP:19 Direct Connection 47
A29 PIM:44_PWR:A29 Direct Connection 44
B29 PIM:43_PWR:B29 Direct Connection 43
C29 PIM:42_PWR:C29 Direct Connection 42
A30 DGND Digital Ground —
B30 DGND Digital Ground —
C30 DGND Digital Ground —
A31 PIM:41_PWR:A31_EXP:56 Direct Connection – Push Button SW4 41
B31 PIM:40_PWR:B31_EXP:18 Direct Connection – Push Button SW3 40
C31 PIM:39_PWR:C31_EXP:17 Direct Connection 39
A32 PIM:38_PWR:A32_EXP:16 Direct Connection 38
B32 PIM:35_PWR:B32 Filter Signal 35
C32 PIM:34_PWR:C32_EXP:15 Direct Connection – Debug LED 4 34
A33 PIM:33_PWR:A33_EXP:14 Direct Connection – Debug LED 3 33
B33 PIM:32_PWR:B33_EXP:13 Filter Signal – Potentiometer 1 32
C33 PIM:29_PWR:C33_EXP:12 Direct Connection 29
A34 PIM:28_PWR:A34 Direct Connection – Reference Voltage (VREF) 28
B34 PIM:27_PWR:B34_EXP:42 Direct Connection – Device Programming Data Line (PGD) 27
C34 PIM:26_PWR:C34_EXP:41 Direct Connection – Device Programming Clock Line (PGC) 26
A35 PIM:25_PWR:A35 Filter Signal 25
B35 PIM:24_PWR:B35 Filter Signal 24
C35 PIM:23_PWR:C35_EXP:11 Filter Signal – Potentiometer 2 23
A36 PIM:22_PWR:A36 Filter Signal 22
B36 PIM:21_PWR:B36 Filter Signal 21
C36 PIM:20_PWR:C36 Filter Signal 20
A37 PIM:19_PWR:A37_EXP:10 Direct Connection 19
B37 PIM:18_PWR:B37-EXP:55 Direct Connection 18
C37 PIM:17_PWR:C37 Filter Signal 17
TABLE 2-12: dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (CONTINUED)
Connector J13
Signal Name PIM Connection/Functional Description PIM Pin
Note 1: Direct connection identifies the connection between the J13 connector pins and PIM pins that do not havean analog filter at their input.
2: Filter signal identifies the connection between the J13 connector pins and PIM pins that have an analog filter.
3: DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
4: AVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
2014 Microchip Technology Inc. DS50002263B-page 25
dsPIC® DSC Signal Board
A38 PIM:14_PWR:A38 Filter Signal 14
B38 DGND Through 0 Resistor (R69) —
C38 DGND Digital Ground —
A39 DGND Digital Ground —
B39 DGND Digital Ground —
C39 DGND Digital Ground —
A40 DVDD(3) Digital Voltage (+3.3V/+5V) —
B40 DVDD(3) Digital Voltage (+3.3V/+5V) —
C40 DVDD(3) Digital Voltage (+3.3V/+5V) —
TABLE 2-12: dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (CONTINUED)
Connector J13
Signal Name PIM Connection/Functional Description PIM Pin
Note 1: Direct connection identifies the connection between the J13 connector pins and PIM pins that do not havean analog filter at their input.
2: Filter signal identifies the connection between the J13 connector pins and PIM pins that have an analog filter.
3: DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
4: AVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
DS50002263B-page 26 2014 Microchip Technology Inc.
Board Interface Description
TABLE 2-13: dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (GROUPED BY FUNCTIONALITY)
Connector J13
Signal Name Functional DescriptionPIM Pin
Power Supply Signals
C3 AGND Analog Ground —
C4 AGND Analog Ground —
B4 AVDD Analog Voltage (+3.3V/+5V) —
A4 AVDD Analog Voltage (+3.3V/+5V) —
A10 DGND Digital Ground —
B10 DGND Digital Ground —
C10 DGND Digital Ground —
A20 DGND Digital Ground —
B20 DGND Digital Ground —
C20 DGND Digital Ground —
A30 DGND Digital Ground —
B30 DGND Digital Ground —
C30 DGND Digital Ground —
C38 DGND Digital Ground —
A39 DGND Digital Ground —
B39 DGND Digital Ground —
C39 DGND Digital Ground —
A40 DVDD Digital Voltage (+3.3V/+5V) —
B40 DVDD Digital Voltage (+3.3V/+5V) —
C40 DVDD Digital Voltage (+3.3V/+5V) —
A3 +5V Fixed +5V —
B3 +5V Fixed +5V —
A1 DC+ Input DC Bus Voltage —
B1 DC+ Input DC Bus Voltage —
C1 DC+ Input DC Bus Voltage —
A2 PGND Power Ground —
B2 PGND Power Ground —
C2 PGND Power Ground —
C24 PIM:101_PWR:C24 Reference Voltage (VREF) 101
A18 PIM:104_PWR:A18 Reference Voltage (VREF) 104
C19 PIM:103_PWR:C19 Reference Voltage (VREF) 103
C21 PIM:102_PWR:C21 Reference Voltage (VREF) 102
A34 PIM:28_PWR:A34 Reference Voltage (VREF) 28
2014 Microchip Technology Inc. DS50002263B-page 27
dsPIC® DSC Signal Board
Filter Signals
B5 PIM:11_PWR:B5_EXP:08 Filter Signal 11
C9 PIM:97_PWR:C9_EXP:23 Filter Signal 97
C15 PIM:81_PWR:C15 Filter Signal 81
B16 PIM:79_PWR:B16 Filter Signal 79
A17 PIM:77_PWR:A17 Filter Signal 77
B17 PIM:76_PWR:B17 Filter Signal 76
B18 PIM:74_PWR:B18 Filter Signal 74
C18 PIM:73_PWR:C18 Filter Signal 73
B19 PIM:71_PWR:B19 Filter Signal 71
B21 PIM:83_PWR:B21 Filter Signal 83
B22 PIM:67_PWR:B22 Filter Signal 67
C22 PIM:66_PWR:C22 Filter Signal 66
B25 PIM:57_PWR:B25 Filter Signal 57
A26 PIM:55_PWR:A26 Filter Signal 55
B26 PIM:54_PWR:B26 Filter Signal 54
B32 PIM:35_PWR:B32 Filter Signal 35
A35 PIM:25_PWR:A35 Filter Signal 25
B35 PIM:24_PWR:B35 Filter Signal 24
C25 PIM:56_PWR:C25 Filter Signal 56
A36 PIM:22_PWR:A36 Filter Signal 22
B36 PIM:21_PWR:B36 Filter Signal 21
C36 PIM:20_PWR:C36 Filter Signal 20
C37 PIM:17_PWR:C37 Filter Signal 17
A38 PIM:14_PWR:A38 Filter Signal 14
B33 PIM:32_PWR:B33_EXP:13 Filter Signal – Potentiometer 1 32
C35 PIM:23_PWR:C35_EXP:11 Filter Signal – Potentiometer 2 23
A15 PIM:69_PWR:A15_EXP:28 Filter Signal – Push Button SW1/I2C™ PICkit™ Interface 69
C14 PIM:84_PWR:C14_EXP:29 Filter Signal – Push Button SW2 84
TABLE 2-13: dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (GROUPED BY FUNCTIONALITY) (CONTINUED)
Connector J13
Signal Name Functional DescriptionPIM Pin
DS50002263B-page 28 2014 Microchip Technology Inc.
Board Interface Description
Non-Filter Signals
A14 PIM:87_PWR:A14_EXP:30 Direct Connection – PICkit™ SPI Clock 87
C12 PIM:91_PWR:C12_EXP:32 Direct Connection – PICkit SPI Interface CS 91
C13 PIM:88_PWR:C13_EXP:31 Direct Connection – PICkit SPI Interface Data In 88
B8 PIM:01_PWR:B8_EXP:01 Direct Connection – Debug LED 1 1
B24 PIM:59_PWR:B24_EXP:57 Direct Connection – Debug LED 2 59
A33 PIM:33_PWR:A33_EXP:14 Direct Connection – Debug LED 3 33
C32 PIM:34_PWR:C32_EXP:15 Direct Connection – Debug LED 4 34
A5 PIM:12_PWR:A5_EXP:09 Direct Connection 12
C34 PIM:26_PWR:C34_EXP:41 Direct Connection – Device Programming Clock Line (PGC) 26
B34 PIM:27_PWR:B34_EXP:42 Direct Connection – Device Programming Data Line (PGD) 27
C16 PIM:78_PWR:C16_EXP:26 Direct Connection – PICkit SPI Interface Data Out 78
B31 PIM:40_PWR:B31_EXP:18 Direct Connection – Push Button SW3 40
A31 PIM:41_PWR:A31_EXP:56 Direct Connection – Push Button SW4 41
A28 PIM:49_PWR:A28_EXP:21 Direct Connection – UART Receive/I2C™ PICkit Interface 49
C26 PIM:53_PWR:C26 Direct Connection – UART Transmit 53
C5 PIM:10_PWR:C5 Direct Connection 10
A6 PIM:09_PWR:A6_EXP:07 Direct Connection 9
B6 PIM:08_PWR:B6_EXP:06 Direct Connection 8
C6 PIM:07_PWR:C6_EXP:05 Direct Connection 7
A7 PIM:06_PWR:A7_EXP:04 Direct Connection 6
B7 PIM:05_PWR:B7_EXP:03 Direct Connection 5
C7 PIM:04_PWR:C7_EXP:02 Direct Connection 4
A8 PIM:03_PWR:A8_EXP:49 Direct Connection 3
C8 PIM:100_PWR:C8_EXP:50 Direct Connection 100
A9 PIM:99_PWR:A9_EXP:47 Direct Connection 99
B9 PIM:98_PWR:B9_EXP:48 Direct Connection 98
A11 PIM:96_PWR:A11 Direct Connection 96
B11 PIM:95_PWR:B11 Direct Connection 95
C11 PIM:94_PWR:C11_EXP:45 Direct Connection 94
A12 PIM:93_PWR:A12_EXP:46 Direct Connection 93
B12 PIM:92_PWR:B12 Direct Connection 92
A13 PIM:90_PWR: A13 Direct Connection 90
B13 PIM:89_PWR:B13 Direct Connection 89
B14 PIM:85_PWR:B14 Direct Connection 85
B15 PIM:82_PWR:B15 Direct Connection 82
A16 PIM:80_PWR:A16_EXP:27 Direct Connection 80
A19 PIM:72_PWR:A19 Direct Connection 72
A21 PIM:70_PWR:A21 Direct Connection 70
A22 PIM:68_PWR:A22 Direct Connection 68
A24 PIM:60_PWR:A24_EXP:60 Direct Connection 60
A25 PIM:58_PWR:A25 Direct Connection 58
A27 PIM:52_PWR:A27_EXP:59 Direct Connection 52
TABLE 2-13: dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (GROUPED BY FUNCTIONALITY) (CONTINUED)
Connector J13
Signal Name Functional DescriptionPIM Pin
2014 Microchip Technology Inc. DS50002263B-page 29
dsPIC® DSC Signal Board
B27 PIM:51_PWR:B27_EXP:58 Direct Connection 51
C27 PIM:50_PWR:C27_EXP:22 Direct Connection 50
B28 PIM:48_PWR:B28_EXP:20 Direct Connection 48
C28 PIM:47_PWR:C28_EXP:19 Direct Connection 47
A29 PIM:44_PWR:A29 Direct Connection 44
B29 PIM:43_PWR:B29 Direct Connection 43
C29 PIM:42_PWR:C29 Direct Connection 42
C31 PIM:39_PWR:C31_EXP:17 Direct Connection 39
A32 PIM:38_PWR:A32_EXP:16 Direct Connection 38
C33 PIM:29_PWR:C33_EXP:12 Direct Connection 29
A37 PIM:19_PWR:A37_EXP:10 Direct Connection 19
B37 PIM:18_PWR:B37-EXP:55 Direct Connection 18
C23 PIM:61_PWR:C23_EXP:24 Direct Connection 61
C17 PIM:105_PWR:C17 Direct Connection 105
Not Connected
A23 DGND Through 0 Resistor (R73) —
B23 DGND Through 0 Resistor (R70) —
B38 DGND Through 0 Resistor (R69) —
TABLE 2-13: dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (GROUPED BY FUNCTIONALITY) (CONTINUED)
Connector J13
Signal Name Functional DescriptionPIM Pin
DS50002263B-page 30 2014 Microchip Technology Inc.
Board Interface Description
2.3.12 Expansion Board Connector (J4, J5 and J7)
A 60-pin connector permits connection of the dsPIC DSC Signal Board to an expansion board, which can be used for improved user interface, CAN and LIN/J2602 communication. Table 2-14 provides the PIM signals, DC bus and supply voltages con-nected to 60 pins. All odd numbered pin connections of the connector J7 are also routed to the 30-pin header, J4. All even numbered pin connections of connector J7 are also routed to a 30-pin header, J5.
TABLE 2-14: dsPIC® DSC SIGNAL BOARD CONNECTORS, J7, J4 AND J5 PINOUT
Connector J7
Signal Name Functional DescriptionHeader
J4Header
J5PIM Pin
1 PIM:01_PWR:B8_EXP:01 Direct Connection – Debug LED 1 1 — 1
2 PIM:04_PWR:C7_EXP:02 Direct Connection — 2 4
3 PIM:05_PWR:B7_EXP:03 Direct Connection 3 — 5
4 PIM:06_PWR:A7_EXP:04 Direct Connection — 4 6
5 PIM:07_PWR:C6_EXP:05 Direct Connection 5 — 7
6 PIM:08_PWR:B6_EXP:06 Direct Connection — 6 8
7 PIM:09_PWR:A6_EXP:07 Direct Connection 7 — 9
8 PIM:11_PWR:B5_EXP:08 Filter Signal — 8 11
9 PIM:12_PWR:A5_EXP:09 Direct Connection 9 — 12
10 PIM:19_PWR:A37_EXP:10 Direct Connection — 10 19
11 PIM:23_PWR:C35_EXP:11 Filter Signal – Potentiometer 2 11 — 23
12 PIM:29_PWR:C33_EXP:12 Direct Connection — 12 29
13 PIM:32_PWR:B33_EXP:13 Potentiometer 1 13 — 32
14 PIM:33_PWR:A33_EXP:14 Direct Connection – Debug LED 3 — 14 33
15 PIM:34_PWR:C32_EXP:15 Direct Connection – Debug LED 4 15 — 34
16 PIM:38_PWR:A32_EXP:16 Direct Connection — 16 38
17 PIM:39_PWR:C31_EXP:17 Direct Connection 17 — 39
18 PIM:40_PWR:B31_EXP:18 Direct Connection – Push Button SW3 — 18 40
19 PIM:47_PWR:C28_EXP:19 Direct Connection 19 — 47
20 PIM:48_PWR:B28_EXP:20 Direct Connection — 20 48
21 PIM:49_PWR:A28_EXP:21 Direct Connection – UART Receive/I2C™ PICkit™ Interface
21 — 49
22 PIM:50_PWR:C27_EXP:22 Direct Connection – UART Transmit — 22 50
23 PIM:97_PWR:C9_EXP:23 Filter Signal 23 — 97
24 PIM:61_PWR:C23_EXP:24 Direct Connection — 24 61
25 PIM:13 (MCLR) Direct Connection – Device Master Clear (MCLR) 25 — 13
26 PIM:78_PWR:C16_EXP:26 Direct Connection – PICkit SPI Interface Data Out — 26 78
27 PIM:80_PWR:A16_EXP:27 Direct Connection 27 — 80
28 PIM:69_PWR:A15_EXP:28 Filter Signal – Push Button SW1/I2C PICkit Interface
— 28 69
29 PIM:84_PWR:C14_EXP:29 Filter Signal – Push Button SW2 29 — 84
30 PIM:87_PWR:A14_EXP:30 Direct Connection – PICkit SPI Clock — 30 87
31 PIM:88_PWR:C13_EXP:31 Direct Connection – PICkit SPI Interface Data In 31 — 88
32 PIM:91_PWR:C12_EXP:32 Direct Connection – PICkit SPI Interface CS — 32 91
33 DGND Digital Ground 33 — —
Note 1: DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
2: AVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
2014 Microchip Technology Inc. DS50002263B-page 31
dsPIC® DSC Signal Board
34 DGND Digital Ground — 34 —
35 DC+ Input DC Bus Voltage 35 — —
36 DC+ Input DC Bus Voltage — 36 —
37 DGND Digital Ground 37 — —
38 DGND Digital Ground — 38 —
39 +5V Fixed +5V 39 — —
40 +5V Fixed +5V — 40 —
41 PIM:26_PWR:C34_EXP:41 Direct Connection – Device Programming Clock Line (PGC)
41 — 26
42 PIM:27_PWR:B34_EXP:42 Direct Connection – Device Programming Data Line (PGD)
— 42 27
43 DVDD(1) Digital Voltage (+3.3/+5V) 43 — —
44 DVDD(1) Digital Voltage (+3.3/+5V) — 44 —
45 PIM:94_PWR:C11_EXP:45 Direct Connection 45 — 94
46 PIM:93_PWR:A12_EXP:46 Direct Connection — 46 93
47 PIM:99_PWR:A9_EXP:47 Direct Connection 47 — 99
48 PIM:98_PWR:B9_EXP:48 Direct Connection — 48 98
49 PIM:03_PWR:A8_EXP:49 Direct Connection 49 — 3
50 PIM:100_PWR:C8_EXP:50 Direct Connection — 50 100
51 AGND Analog Ground 51 — —
52 AGND Analog Ground — 52 —
53 AVDD(2) Analog Voltage (+3.3/+5V) 53 — —
54 AVDD(2) Analog Voltage (+3.3/+5V) — 54 —
55 PIM:18_PWR:B37-EXP:55 Direct Connection 55 — 18
56 PIM:41_PWR:A31_EXP:56 Direct Connection – Push Button SW4 — 56 41
57 PIM:59_PWR:B24_EXP:57 Direct Connection – Debug LED 2 57 — 59
58 PIM:51_PWR:B27_EXP:58 Direct Connection — 58 51
59 PIM:52_PWR:A27_EXP:59 Direct Connection 59 — 52
60 PIM:60_PWR:A24_EXP:60 Direct Connection — 60 60
TABLE 2-14: dsPIC® DSC SIGNAL BOARD CONNECTORS, J7, J4 AND J5 PINOUT (CONTINUED)
Connector J7
Signal Name Functional DescriptionHeader
J4Header
J5PIM Pin
Note 1: DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
2: AVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
DS50002263B-page 32 2014 Microchip Technology Inc.
Board Interface Description
2.4 USER INTERFACE HARDWARE
2.4.1 Board Jumpers
The dsPIC DSC Signal Board has five jumpers.The on-board jumpers are provided in Table 2-15. Figure 2-2 shows the jumper positions.
FIGURE 2-2: dsPIC® DSC SIGNAL BOARD JUMPERS
TABLE 2-15: dsPIC® DSC SIGNAL BOARD JUMPERS
JumperDesignator
Number of Pins
Jumper Description
J11 2 If shorted, it connects the TX signal between the PIM and isolator, U3(see Figure A-3)
J14 3 Position 1-2: Enables Power Supply 1 for fixed +5VPosition 2-3: Disables Power Supply 1 for fixed +5V
J15 2 If shorted, it connects the signal between the PIM and push button, SW1
J18 2 If the jumpers J18 and J19 are shorted on the PIM, then the output ofPower Supply 2 is +5V; if the connectors J18 and J19 are open, thenthe output is +3.3V(1)
J19 2 If the jumpers J18 and J19 are shorted on the PIM, then the output ofPower Supply 2 is +5V; if the connectors J18 and J19 are open, thenthe output is +3.3V(1)
Note 1: J18 and J19 must be in the same position for proper operation of the power supply circuit.
J14
J15
J11
J18 J19
J14
J15
J11
J18 J19
®
2014 Microchip Technology Inc. DS50002263B-page 33
dsPIC® DSC Signal Board
2.4.2 Push Buttons, LEDs and Potentiometers
The dsPIC DSC Signal Board has the following push buttons, LEDs and potentiometers:
• Device Reset Push Button (SW0)
• Four Push Buttons (SW1-SW4)
• Two Potentiometers (POT1, POT2)
• Two Power-on Status LEDs (LD5 and LD6)
• Four LEDs for Debugging (LD1-LD4)
• Two LED Indicators for USB Communications (LD7 and LD8)
Table 2-16 and Table 2-17 provide the LED indicators, push buttons and potentio-meters. Figure 2-3 shows the positions of the on-board push buttons, LEDs and potentiometers.
TABLE 2-16: LED INDICATORS
Label Hardware Element Description
LD1-LD4 LEDs are used for debugging
LD5 Power-on status LED indicates the status of Power Supply 2 (DVDD)
LD6 Power-on status LED indicates the status of Power Supply 1 (+5V)
LD7 USB transmit indication
LD8 USB receive indication
TABLE 2-17: PUSH BUTTONS AND POTENTIOMETERS
Label Hardware Element Description
SW0 Push button to reset the target device
SW1-SW4 General purpose push buttons; when momentarily pressed, the switch connects the respective PIM pin to ground
POT1, POT2 10 k potentiometer
DS50002263B-page 34 2014 Microchip Technology Inc.
Board Interface Description
FIGURE 2-3: dsPIC® DSC SIGNAL BOARD USER INTERFACE
SW0
SW1
SW2
SW3
SW4
POT2
POT1
LD1-4
LD7-8
LD5
®
LD6
2014 Microchip Technology Inc. DS50002263B-page 35
dsPIC® DSC Signal Board
2.5 BOARD TEST POINTS
There are several test points on the dsPIC DSC Signal Board that can be used to check various signals. Table 2-18 provides the on-board test points. Figure 2-4 shows the dsPIC DSC Signal Board test points.
TABLE 2-18: TEST POINTS
Test PointsSignal Name
Description
TP1 — Output of Buck Converter, U4 (MCP16301)
TP2 — Output of Buck Converter, U6 (MCP16301)
TP3 EXT DC+ Input Bus Voltage Connected to Connector J17
TP4 DGND Digital Ground
TP5 AGND Analog Ground
TP6 DC24V DC Bus Voltage
TP7 DVDD(1) Digital Supply Voltage (+3.3V/+5V)
TP8 AVDD(2) Analog Supply Voltage (+3.3V/+5V)
TP9 DC+ Input Bus Voltage Connector to Connectors J13 and J7
TP10 +5V Fixed +5V DC Voltage
TP11 VREF(3) Half the Analog Supply Voltage, AVDD, for Reference to Op Amps
TP12, TP13, TP14, TP20
DGND Digital Ground
TP15, TP16 AGND Analog Ground
TP18 PGND Power Ground
TP19 GND_USB USB Ground
Note 1: DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged intothe board.
2: AVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into theboard.
3: VREF voltage level is configured as either +1.65V or +2.5V based on AVDD.
DS50002263B-page 36 2014 Microchip Technology Inc.
Board Interface Description
FIGURE 2-4: dsPIC® DSC SIGNAL BOARD TEST POINTS
TP20
TP3
TP9
TP6
TP10 TP1 TP2 TP7
TP4
TP14
TP8
TP5
TP19
TP12
TP11
TP15
TP18 TP16 TP13
®
2014 Microchip Technology Inc. DS50002263B-page 37
dsPIC® DSC Signal Board
NOTES:
DS50002263B-page 38 2014 Microchip Technology Inc.
dsPIC® DSC SIGNAL BOARD
USER’S GUIDEChapter 3. Hardware Description
3.1 INTRODUCTION
This chapter provides a more detailed description of the hardware features of the dsPIC® DSC Signal Board.
3.2 HIGHLIGHTS
This chapter covers the following topics:
• Power Supply Circuit
• Voltage Reference Circuit
• Isolated USB Interface
• PIM Header Signals
• Supply Voltage and Ground Connection
The hardware sections of the dsPIC DSC Signal Board are shown in Figure 3-1.
2014 Microchip Technology Inc. DS50002263B-page 39
dsPIC® DSC Signal Board
FIGURE 3-1: dsPIC® DSC SIGNAL BOARD HARDWARE SECTIONS
13
Legend:
1 Switches 2 Prototyping Area
3 General Purpose LEDs 4 Voltage Reference Circuit
5 Potentiometers 6 Power Supply 1 (fixed +5V)
7 Power Supply 2 (+3.3/+5V selectable) 8 PICkit™/ICD Interface
9 SPI Interface 10 USB/UART Isolated Interface
11 Header J4/J5 for Expansion Board 12 60-Pin Expansion Board Connector for Add-on Boards (J7)
13 100/105 PIM Header 14-a Analog Input Signal Conditioning
14-b Analog Input Signal Conditioning 15 120-Pin Power Board Interface Connector for Application Boards (J13)
67
21
3
45
15
14-a
8
9
14-b
10
11 12
®
DS50002263B-page 40 2014 Microchip Technology Inc.
Hardware Description
3.3 POWER SUPPLY CIRCUIT
The dsPIC DSC Signal Board has two power supply circuits: Power Supply 1 andPower Supply 2 (see Figure 3-2) with identical topology. Power Supply 1 has a fixed+5V output, while the output of Power Supply 2 can be switched between +3.3V/+5V,depending on the dsPIC DSC or microcontroller used.
FIGURE 3-2: POWER SUPPLY CIRCUIT ARCHITECTURE
Input for the power supply circuits is provided either through power connector jack J17, or through pins of connectors J13 and J7 with a DC+ signal. The power supply circuit has these key features:
• High efficiency
• Low ripple output
• Snubber circuit or ferrite bead provided to minimize switching noise
Buck Converter
(MCP16301)
LDO
(MCP1826)
TP1
DCLOCAL +5V
Power Supply 1
FeedbackFeedback
Buck Converter(MCP16301)
LDO(MCP1826)
TP2
DVDD
Power Supply 2
FeedbackFeedback
J18 J19
EN
1 2J14
DCLOCAL
3
2014 Microchip Technology Inc. DS50002263B-page 41
dsPIC® DSC Signal Board
The power supply provides power to these components:
• A dsPIC DSC or microcontroller device, an isolator (ADUM1201CRZ) and the reference voltage circuit for op amps receives +3.3V/+5V power from Power Supply 2
• J13 and J7 connector pins with a digital voltage (DVDD) signal receive power from Power Supply 2 (see Note 1)
• J13 and J7 connector pins with a fixed +5V signal receive power from Power Supply 1 (see Note 1)
The output of a fixed +5V power supply circuit can be disabled using jumper J14. When Pins 1-2 on the connector J14 are connected, Power Supply 1 is enabled with a fixed +5V DC output voltage. However, when Pins 2-3 are connected, Power Supply 1 is disabled (see Note 2).
3.3.1 Power Supply 2 Output Selection
The Power Supply 2 is interfaced with the PIM through connectors J18 and J19 (see Figure 3-3). When connectors J18 and J19 are short-circuited on the PIM, it generates +5V DC. When connectors J18 and J19 are open-circuited on the PIM, +3.3V DC is generated.
FIGURE 3-3: POWER SUPPLY 2 WITH CONNECTION ON PIM
Note 1: For the power connector jack J17, a 24V power supply (AC002013) is recommended.
2: When the dsPIC DSC Signal Board is used with Microchip’s Motor Control 10-24V Driver Board (Dual/Single), the connection of a power supply to the dsPIC DSC Signal Board is optional.
Buck Converter(MCP16301)
J18
DC Local LDO
(MCP1826)
J19
DVDD
105-Pin PIM
DS50002263B-page 42 2014 Microchip Technology Inc.
Hardware Description
3.4 VOLTAGE REFERENCE CIRCUIT
The reference voltage is generated on the dsPIC DSC Signal Board. It is half the output of Power Supply 2 (+1.65V or +2.5V) depending upon AVDD. The reference circuit is built around an MCP6021 op amp (see Figure 3-4) and connects to several PIM header pins (see Table 2-2). The reference voltage is also connected to connector J13 (see Table 2-12).
Figure 3-4 shows the circuit used to obtain the voltage reference signal which is half the magnitude of the AVDD. The resistors R25 and R26 form the voltage divider circuit and generate a voltage equal to half of the analog voltage (AVDD). Op Amp U1 MCP6021 is used as the buffer. The resistors R81, R82 and C30 form a compensation circuit to drive capacitive loads, where C30 acts as a high-frequency feedback path and R81 is used as a feedback path for low-frequency signals.
FIGURE 3-4: VOLTAGE REFERENCE SIGNAL GENERATION CIRCUIT
Figure 3-5 shows that the reference voltage to the PIM can be supplied in two ways. It can be supplied by the circuit on the dsPIC DSC Signal Board (see Figure 3-4) or it can also be supplied externally from the J13 connector pins. The reference voltage selection can be made by populating one of the two resistors: RINT or REXT. Table 3-1 provides the list of resistors used to connect the reference signal.
FIGURE 3-5: VOLTAGE REFERENCE SIGNAL ROUTING
AVDD
C720.1 µF
R81
C30
1000 pF
R81
20R
1k
C730.1 µF
R2510k
R2610k
D9DNP
AVDD
AGND
AGNDAGNDAGND
AGND
4
3
5
2
1
TP11
VREF
-A
+A
VDD
VSS
OUTAU1
MCP6021
Voltage Reference
PIM Header
Connector J13
REXT
RINT
0
0DNP
2014 Microchip Technology Inc. DS50002263B-page 43
dsPIC® DSC Signal Board
3.5 ISOLATED USB INTERFACE
The dsPIC DSC Signal Board uses an on-board MCP2200 interface as a bridge between the UART and USB. The connector J3 is a mini USB header used to connect a PC USB cable. The USB is isolated from the dsPIC DSC using a two-channel digital isolator (ADUM1201CRZ).
FIGURE 3-6: USB-UART CONNECTION SETUP
Figure 3-6 shows that the UART signal used for the USB interface is isolated through the ADUM1201CRZ isolator. The MCP2200 is a USB-to-UART serial converter, which enables USB connectivity in applications that have a UART interface. The USB-UART connection setup can support a baud rate of up to 1 Mbps.
TABLE 3-1: RESISTOR TO SELECT VOLTAGE REFERENCE SOURCE
PIM Header J13 Connector RINT Designator REXT Designator
PIM:101 PIM:101_PWR:C24 R89 R90
PIM:102 PIM:102_PWR:C21 R95 R96
PIM:103 PIM:103_PWR:C19 R91 R92
PIM:104 PIM:104_PWR:A18 R93 R94
PIMADUM1201CRZ
(Digital Isolator)
MCP2200
(USB-UART)
U2
TX TX
RX RX
U3
DS50002263B-page 44 2014 Microchip Technology Inc.
Hardware Description
3.6 PIM HEADER SIGNALS
3.6.1 Signal Nomenclature
The dsPIC DSC signals use the following naming convention (except for auxiliary power supply pins):
PIM:xx_PWR:yy_EXP:zz[_FLT]
where:
PIM:xx indicates that the signal originates at PIM Pin Number xx
PWR:yy indicates that the signal is connected to Pin yy of the power board interface connector (J13)
EXP:zz indicates that the signal is connected to Pin zz of the expansion board connector (J7)
[_FLT]: if present, indicates that the signal between the connector J13 and the PIM is filtered (see Figure 3-7 to Figure 3-10 for different connection topologies).
3.6.2 Analog Input Signal Conditioning
The PIM pins are connected to the power board interface connector J13 and the expansion board connector J7 by the following four possible topologies:
• Topology 1: In this topology, there is a first order low-pass filter and voltage surge protection diodes between the PIM header and the connectors. Figure 3-7 shows the connection between the PIM header and the connectors J13, J7, J4 and J5.
• Topology 2: In this topology, there is a first order low-pass filter and voltage surge protection diodes between the PIM header and the connectors. Figure 3-8 shows the connection between the PIM header and the connector J13. These signals are not connected to connectors J7, J4 and J5.
• Topology 3: In this topology, there is no connection for a first order filter. Figure 3-9 shows the direct connection between the PIM header and the connectors J13, J7, J4 and J5.
• Topology 4: In this topology, there is no connection for a first order filter. Figure 3-10 shows the direct connection between the PIM header and the connector J13. These signals are not connected to connectors J7, J4 and J5.
2014 Microchip Technology Inc. DS50002263B-page 45
dsPIC® DSC Signal Board
FIGURE 3-7: TOPOLOGY 1
FIGURE 3-8: TOPOLOGY 2
PIM:xx_PWR:yy_EXP:zz
Expansion BoardConnector (J7, J4, J5)
PIM:xx_PWR:yy_EXP:zz_FLT
PIM HeaderVoltage SurgeProtection
AGND
AVDD
C
1st OrderLow-Pass Filter
‘xx’‘zz’
D
C
PIM:xx_PWR:yy_EXP:zz
Power Board Interface Connector J13
‘yy’
Note: The signal connected to the PIM has the same name of the signal at the connector, with an added “_FLT” suffix toindicate that the signal is filtered. The 1st order low-pass filter is implemented in hardware; however, the user canremove the components or change their values to better fit the application requirements.
Expansion BoardConnector (J7, J4, J5)
PIM:xx_PWR:yy_FLT
PIM HeaderVoltage SurgeProtection
AGND
AVDD
C
1st OrderLow-Pass Filter
‘xx’
D
C
PIM:xx_PWR:yy
Power Board Interface Connector J13
‘yy’
R
Note: The signal connected to the PIM has the same name of the signal at the connector, with an added “_FLT” suffixto indicate that the signal is filtered. The 1st order low-pass filter is implemented in hardware; however, the usercan remove the components or change their values to better fit the application requirements.
DS50002263B-page 46 2014 Microchip Technology Inc.
Hardware Description
FIGURE 3-9: TOPOLOGY 3
FIGURE 3-10: TOPOLOGY 4
Diode D (BAS 40-04 with 40V blocking voltage), shown in Figure 3-7 and Figure 3-8, is used for transient and ESD protection. The 1st order low-pass filter, shown in Figure 3-7 and Figure 3-8, is used to attenuate high-frequency noise. The cutoff frequency for this filter is given by Equation 3-1.
EQUATION 3-1: FIRST ORDER LOW-PASS FILTER CUTOFF FREQUENCY
Expansion BoardConnector (J7, J4, J5)
PIM:xx_PWR:yy_EXP:zz
PIM Header
‘xx’
PIM:xx_PWR:yy_EXP:zz
Power Board Interface Connector J13
‘yy’
PIM:xx_PWR:yy_EXP:zz ‘zz’
Expansion BoardConnector (J7, J4, J5)
PIM:xx_PWR:yy
PIM Header
‘xx’
PIM:xx_PWR:yy
Power Board Interface Connector J13
‘yy’
Cutof f Frequency1
2RC--------------- 340 kHz=
Where:
R = 1 k and C = 470 pF
2014 Microchip Technology Inc. DS50002263B-page 47
dsPIC® DSC Signal Board
3.7 SUPPLY VOLTAGE AND GROUND CONNECTION
The dsPIC DSC Signal Board has three separate grounds: Digital Ground (DGND), Analog Ground (AGND) and Power Ground (PGND). All three grounds can be con-nected by populating the resistors R74 and R75 (see Figure 3-11). DGND and AGND are connected through R29 (0) by default. The Analog Voltage (AVDD) is derived from DVDD through R130 (0), see Figure 3-12.
FIGURE 3-11: GROUND INTERCONNECTION
FIGURE 3-12: CONNECTION OF AVDD TO DVDD
Note: PGND is expected to be connected to DGND and AGND on applicationboards. To avoid ground loops, PGND is not connected to AGND andDGND on the dsPIC DSC Signal Board.
R29 R74 R75
DGND AGND PGND
DNP0 DNP
AGNDDGND
TP7 TP8
R130
0DVDD AVDD
DS50002263B-page 48 2014 Microchip Technology Inc.
dsPIC® DSC SIGNAL BOARDUSER’S GUIDE
Appendix A. Schematics and Layout
A.1 INTRODUCTION
This chapter provides detailed technical information on the dsPIC® DSC Signal Board.
A.2 BOARD SCHEMATICS AND LAYOUT
The following are the dsPIC DSC Signal Board schematics and layout:
• Figure A-1: dsPIC DSC Signal Board schematics (Sheet 1 of 5)
• Figure A-2: dsPIC DSC Signal Board schematics (Sheet 2 of 5)
• Figure A-3: dsPIC DSC Signal Board schematics (Sheet 3 of 5)
• Figure A-4: dsPIC DSC Signal Board schematics (Sheet 4 of 5)
• Figure A-5: dsPIC DSC Signal Board schematics (Sheet 5 of 5)
• Figure A-6: dsPIC DSC Signal Board layout
2014 Microchip Technology Inc. DS50002263B-page 49
dsP
IC®
DS
C S
ign
al Bo
ard
DS
50
00
22
63
B-p
ag
e 5
0
20
14
Micro
chip
Te
chn
olo
gy In
c.
PIM:40_PWR:B31_EXP:18
:41_PWR:A31_EXP:56
1k0603
R15
12
GREENLD1
k3
9
DGND
PIM
:01_
PWR
:B8_
EXP:
01
1k0603
R16
12
GREENLD2
DGND
PIM
:59_
PWR
:B24
_EX
P:57
1k0603
R17
12
GREENLD3
DGND
PIM
:33_
PWR
:A33
_EX
P:14
1k0603
R18
12
GREENLD4
DGND
PIM
:34_
PWR
:C32
_EX
P:15
12
34
56
1x6 RA
J1
RJ-11
12
34
56
J2
DGND
DVDD
PIM:13 (MCLR)
PIM:27_PWR:B34_EXP:42PIM:26_PWR:C34_EXP:41(PGC)
(PGD)
1x30
12
34
56
78
910
1112
1314
1516
1718
1920
2122
2324
2526
2728
2930
U2E
DGND
DVDD
PIM:51_PWR:B27_EXP:58IM:52_PWR:A27_EXP:59
PIM:54_PWR:B26_FLT
PIM:58_PWR:A25
PIM:53_PWR:C26
PIM:55_PWR:A26_FLTPIM:56_PWR:C25_FLTPIM:57_PWR:B25_FLT
PIM:59_PWR:B24_EXP:57PIM:60_PWR:A24_EXP:60PIM:61_PWR:C23_EXP:24
PIM:63 (OSC1)
PIM:66_PWR:C22_FLTPIM:67_PWR:B22_FLT
PIM:68_PWR:A2215_EXP:28_FLT_PICkit
PIM:70_PWR:A21PIM:71_PWR:B19_FLT
PIM:72_PWR:A19PIM:73_PWR:C18_FLTPIM:74_PWR:B18_FLT
PIM:101PIM:102PIM:103PIM:104
PIM:105_PWR:C17
PIM:64 (OSC2)
123456
DNP
J12
DGND
DVDD
PIM:49_PWR:A28_EXP:21PIM:69_PWR:A15_EXP:28_FLT_PICKIT
PICkit I C™2
FIGURE A-1: dsPIC® DSC SIGNAL BOARD SCHEMATIC REVISION 1.0 (SHEET 1 OF 5)
PIM:32_PWR:B33_EXP:13_FLT
AVDD
100R0603
R2
AGND
0.1 μF060316V
C1
AGND
PIM:23_PWR:C35_EXP:11_FLT
AVDD
AGNDAGND
SPST
1 4
2 3
SW0
DGND
4.7k0603
R5
470R0603
R6
DVDD
PIM:13 (MCLR)
DGND
DVDD
PIM:69_PWR:A15_EXP:28_FLT
DGND
DVDD
PIM:84_PWR:C14_EXP:29_FLT
DGND
DVDD
DGND
DVDD
PIM
1%100R0603
R100.1 μF060316V
C3
0.1 μF060316V
C2
SPST
1 4
2 3
SW1
4.7k0603
R4
4.7k0603
R8
SPST
1 4
2 3
SW2
4.7k0603
R11
4.7k0603
R13
SPST
1 4
2 3
SW4
4.7k0603
R12
4.7k0603
R14
SPST
1 4
2 3
SW3
4.7k0603
R7
4.7060
R
0R0603
R55
0R0603
R54
0.1 μF060316V
C270.1 μF060316V
C28
DGND DGND
0.1 μF060316V
C25
0.1 μF060316V
C26
DGND
DGNDDGND1
3
2 10k3386F10%
R1
13
2 10k3386F10%
R3RESET
(POT 1)
(POT 2)
1x25
12
34
56
78
910
1112
1314
1516
1718
1920
2122
2324
25
U2A
1x25
12
34
56
78
910
1112
1314
1516
1718
1920
2122
2324
25U2B
1x25
12
34
56
78
910
1112
1314
1516
1718
1920
2122
2324
25
U2D
DGND
DVDD
DVDDPIM:01_PWR:B8_EXP:01
PIM:03_PWR:A8_EXP:49PIM:04_PWR:C7_EXP:02PIM:05_PWR:B7_EXP:03PIM:06_PWR:A7_EXP:04PIM:07_PWR:C6_EXP:05PIM:08_PWR:B6_EXP:06PIM:09_PWR:A6_EXP:07
PIM:11_PWR:B5_EXP:08_FLTPIM:10_PWR:C5
PIM:12_PWR:A5_EXP:09PIM:13 (MCLR)
PIM:14_PWR:A38_FLT
PIM:17_PWR:C37_FLTPIM:18_PWR:B37_EXP:55PIM:19_PWR:A37_EXP:10
PIM:20_PWR:C36_FLTPIM:21_PWR:B36_FLTPIM:22_PWR:A36_FLT
PIM:23_PWR:C35_EXP:11_FLTPIM:24_PWR:B35_FLTPIM:25_PWR:A35_FLT
DGND
DVDD
DVDD
AGND
AVDD
PIM:26_PWR:C34_EXP:41PIM:27_PWR:B34_EXP:42
PIM:28_PWR:A34PIM:29_PWR:C33_EXP:12
PIM:32_PWR:B33_EXP:13_FLTPIM:33_PWR:A33_EXP:14PIM:34_PWR:C32_EXP:15
PIM:35_PWR:B32_FLT
PIM:38_PWR:A32_EXP:16PIM:39_PWR:C31_EXP:17PIM:40_PWR:B31_EXP:18PIM:41_PWR:A31_EXP:56
PIM:42_PWR:C29PIM:43_PWR:B29
PIM:47_PWR:C28_EXP:19PIM:48_PWR:B28_EXP:20PIM:49_PWR:A28_EXP:21PIM:50_PWR:C27_EXP:22
PIM:44_PWR:A29
DGND
DVDD
PIM:51_PWR:B27_EXP:58PIM:52_PWR:A27_EXP:59
PIM:54_PWR:B26_FLT
PIM:58_PWR:A25
PIM:68_PWR:A22
PIM:72_PWR:A19
PIM:53_PWR:C26
PIM:55_PWR:A26_FLTPIM:56_PWR:C25_FLTPIM:57_PWR:B25_FLT
PIM:59_PWR:B24_EXP:57PIM:60_PWR:A24_EXP:60PIM:61_PWR:C23_EXP:24
PIM:63 (OSC1)
PIM:66_PWR:C22_FLTPIM:67_PWR:B22_FLT
PIM:69_PWR:A15_EXP:28_FLT_PICKITPIM:70_PWR:A21
PIM:71_PWR:B19_FLT
PIM:73_PWR:C18_FLTPIM:74_PWR:B18_FLT
1x25
12
34
56
78
910
1112
1314
1516
1718
1920
2122
2324
25
U2C
DVDD
PIM:76_PWR:B17_FLTPIM:77_PWR:A17_FLT
PIM:78_PWR:C16_EXP:26PIM:79_PWR:B16_FLT
PIM:80_PWR:A16_EXP:27PIM:81_PWR:C15_FLT
PIM:82_PWR:B15PIM:83_PWR:B21_FLT
PIM:84_PWR:C14_EXP:29_FLTPIM:85_PWR:B14
PIM:87_PWR:A14_EXP:30PIM:88_PWR:C13_EXP:31
PIM:91_PWR:C12_EXP:32
PIM:89_PWR:B13PIM:90_PWR:A13
PIM:92_PWR:B12PIM:93_PWR:A12_EXP:46PIM:94_PWR:C11_EXP:45
PIM:96_PWR:A11PIM:97_PWR:C9_EXP:23_FLT
PIM:99_PWR:A9_EXP:47PIM:98_PWR:B9_EXP:48
PIM:100_PWR:C8_EXP:50
PIM:95_PWR:B11
PIM:64 (OSC2)
(PGC)(PGD) P
PIM:69_PWR:A
8 MHz
X2
33 pF50V0603
C3333 pF50V0603
C84
DGNDDGND
1 2J15
DGND
DNPC95
PIM:69_PWR:A15_EXP:28_FLT_PICKIT
123456
DNP
J10PICkit™ SPI
PIM:78_PWR:C16_EXP:26PIM:87_PWR:A14_EXP:30PIM:88_PWR:C13_EXP:31
PIM:91_PWR:C12_EXP:32
DGND
DVDD
0RR87
0RR970RR98
RUBBER PAD 0.50x0.50x0.23
PAD1 PAD2 PAD3 PAD4
SJ-5518
PAD5
J15a
All resistors are 1% toleranceunless otherwise specified
Schematics and Layout
FIGURE A-2: dsPIC® DSC SIGNAL BOARD SCHEMATIC REVISION 1.0 (SHEET 2 OF 5)
DGND AGND
DVDD
PIM:17_PWR:C37
PIM:20_PWR:C36
PIM:23_PWR:C35_EXP:11
PIM:26_PWR:C34_EXP:41
PIM:29_PWR:C33_EXP:12
PIM:34_PWR:C32_EXP:15
PIM:39_PWR:C31_EXP:17
PIM:42_PWR:C29
PIM:47_PWR:C28_EXP:19
PIM:50_PWR:C27_EXP:22
PIM:53_PWR:C26
PIM:56_PWR:C25
PIM:101_PWR:C24
PIM:61_PWR:C23_EXP:24
PIM:66_PWR:C22
PIM:102_PWR:C21
PIM:103_PWR:C19
PIM:73_PWR:C18
PIM:105_PWR:C17
PIM:78_PWR:C16_EXP:26
PIM:81_PWR:C15
PIM:84_PWR:C14_EXP:29
PIM:88_PWR:C13_EXP:31
PIM:91_PWR:C12_EXP:32
PIM:94_PWR:C11_EXP:45
PIM:97_PWR:C9_EXP:23
PIM:100_PWR:C8_EXP:50
PIM:04_PWR:C7_EXP:02
PIM:07_PWR:C6_EXP:05
PIM:10_PWR:C5
DGND
+5V
AVDD
DVDD
PIM:14_PWR:A38PIM:18_PWR:B37_EXP:55PIM:19_PWR:A37_EXP:10
PIM:21_PWR:B36PIM:22_PWR:A36PIM:24_PWR:B35PIM:25_PWR:A35
PIM:27_PWR:B34_EXP:42PIM:28_PWR:A34
PIM:32_PWR:B33_EXP:13PIM:33_PWR:A33_EXP:14
PIM:35_PWR:B32PIM:38_PWR:A32_EXP:16PIM:40_PWR:B31_EXP:18PIM:41_PWR:A31_EXP:56
PIM:43_PWR:B29PIM:44_PWR:A29
PIM:48_PWR:B28_EXP:20PIM:49_PWR:A28_EXP:21PIM:51_PWR:B27_EXP:58PIM:52_PWR:A27_EXP:59
PIM:54_PWR:B26PIM:55_PWR:A26PIM:57_PWR:B25PIM:58_PWR:A25
PIM:59_PWR:B24_EXP:57PIM:60_PWR:A24_EXP:60
PIM:67_PWR:B22PIM:68_PWR:A22
PIM:69_PWR:A15_EXP:28
PIM:70_PWR:A21
PIM:71_PWR:B19PIM:72_PWR:A19PIM:74_PWR:B18
PIM:104_PWR:A18PIM:76_PWR:B17PIM:77_PWR:A17PIM:79_PWR:B16
PIM:80_PWR:A16_EXP:27PIM:82_PWR:B15
PIM:83_PWR:B21
PIM:85_PWR:B14PIM:87_PWR:A14_EXP:30
PIM:89_PWR:B13PIM:90_PWR:A13PIM:92_PWR:B12
PIM:93_PWR:A12_EXP:46PIM:95_PWR:B11PIM:96_PWR:A11
PIM:98_PWR:B9_EXP:48PIM:99_PWR:A9_EXP:47PIM:01_PWR:B8_EXP:01PIM:03_PWR:A8_EXP:49PIM:05_PWR:B7_EXP:03PIM:06_PWR:A7_EXP:04PIM:08_PWR:B6_EXP:06PIM:09_PWR:A6_EXP:07PIM:11_PWR:B5_EXP:08PIM:12_PWR:A5_EXP:09
2x30 RA
1 23 4
5 67 8
9 1011 12
13 1415 16
17 1819 20
222123 24
25 2627 28
29 3031 32
33 3435 36
37 3839 40
41 4243 44
45 4647 48
49 5051 52
53 5455 56
57 5859 60
J7PIM:01_PWR:B8_EXP:01PIM:05_PWR:B7_EXP:03PIM:07_PWR:C6_EXP:05PIM:09_PWR:A6_EXP:07PIM:12_PWR:A5_EXP:09
PIM:23_PWR:C35_EXP:11PIM:32_PWR:B33_EXP:13PIM:34_PWR:C32_EXP:15PIM:39_PWR:C31_EXP:17PIM:47_PWR:C28_EXP:19PIM:49_PWR:A28_EXP:21PIM:97_PWR:C9_EXP:23
PIM:13 (MCLR)PIM:80_PWR:A16_EXP:27PIM:84_PWR:C14_EXP:29PIM:88_PWR:C13_EXP:31
PIM:26_PWR:C34_EXP:41
PIM:94_PWR:C11_EXP:45PIM:99_PWR:A9_EXP:47PIM:03_PWR:A8_EXP:49
PIM:18_PWR:B37_EXP:55PIM:59_PWR:B24_EXP:57PIM:52_PWR:A27_EXP:59
AGND
PIM:04_PWR:C7_EXP:02PIM:06_PWR:A7_EXP:04
PIM:50_PWR:C27_EXP:22PIM:61_PWR:C23_EXP:24PIM:78_PWR:C16_EXP:26
PIM:91_PWR:C12_EXP:32PIM:87_PWR:A14_EXP:30
PIM:41_PWR:A31_EXP:56PIM:51_PWR:B27_EXP:58
DC+DC+
0R0603
R53
DGND
DNP
7
414345
1
19
9
4749
17
29
21
11
23
1315
2527
53
3133353739
5153555759
J4
PIM:01_PWR:B8_EXP:01PIM:05_PWR:B7_EXP:03PIM:07_PWR:C6_EXP:05PIM:09_PWR:A6_EXP:07PIM:12_PWR:A5_EXP:09
PIM:23_PWR:C35_EXP:11PIM:32_PWR:B33_EXP:13PIM:34_PWR:C32_EXP:15PIM:39_PWR:C31_EXP:17PIM:47_PWR:C28_EXP:19PIM:49_PWR:A28_EXP:21PIM:97_PWR:C9_EXP:23
PIM:13 (MCLR)PIM:80_PWR:A16_EXP:27PIM:84_PWR:C14_EXP:29PIM:88_PWR:C13_EXP:31
PIM:26_PWR:C34_EXP:41
PIM:94_PWR:C11_EXP:45PIM:99_PWR:A9_EXP:47PIM:03_PWR:A8_EXP:49
PIM:18_PWR:B37_EXP:55PIM:59_PWR:B24_EXP:57PIM:52_PWR:A27_EXP:59
DNP
8
424446
2
20
10
4850
18
30
22
12
24
1416
2628
64
3234363840
5254565860
J5
PIM:04_PWR:C7_EXP:02PIM:06_PWR:A7_EXP:04
PIM:50_PWR:C27_EXP:22PIM:61_PWR:C23_EXP:24PIM:78_PWR:C16_EXP:26
PIM:91_PWR:C12_EXP:32PIM:87_PWR:A14_EXP:30
0RR69
DGND
DGND
DGND
0RR70 0RR73
PIM:08_PWR:B6_EXP:06PIM:11_PWR:B5_EXP:08
PIM:19_PWR:A37_EXP:10PIM:29_PWR:C33_EXP:12PIM:33_PWR:A33_EXP:14PIM:38_PWR:A32_EXP:16PIM:40_PWR:B31_EXP:18PIM:48_PWR:B28_EXP:20
PIM:69_PWR:A15_EXP:28
DGND
+5V +5VPIM:27_PWR:B34_EXP:42
DVDD DVDDPIM:93_PWR:A12_EXP:46PIM:98_PWR:B9_EXP:48
PIM:100_PWR:C8_EXP:50
AGND
AVDD AVDD
DGND
PIM:60_PWR:A24_EXP:60
DGND
+5V
DVDD
AGND
AVDD
PIM:08_PWR:B6_EXP:06PIM:11_PWR:B5_EXP:08PIM:19_PWR:A37_EXP:10PIM:29_PWR:C33_EXP:12PIM:33_PWR:A33_EXP:14PIM:38_PWR:A32_EXP:16PIM:40_PWR:B31_EXP:18PIM:48_PWR:B28_EXP:20
PIM:69_PWR:A15_EXP:28
DGND
+5V
DVDD
AVDD
PIM:27_PWR:B34_EXP:42
PIM:93_PWR:A12_EXP:46PIM:98_PWR:B9_EXP:48
PIM:100_PWR:C8_EXP:50
AGNDPIM:41_PWR:A31_EXP:56PIM:51_PWR:B27_EXP:58PIM:60_PWR:A24_EXP:60
DC+ DC+
DC+ DC+
PGNDPGND
(PWR CONNECTOR)
(EXP CONNECTOR)
(PGC)
)DGP()CGP(
(PGD)
5650906-5
B1C2
B2C3
B3C4
B4
C1
C5B5
B6C6
B7C7
C8B8
C9B9
C10B10
C11B11
C12B12
C13B13
C14B14
C15B15
C16B16
C17B17
C18B18
C19B19
C20B20
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
C21B21A21
C22B22A22
C23B23A23
C24B24A24
C25B25A25
C26B26A26
C27B27A27
C28B28A28
C29B29A29
C30B30A30
C31B31A31
C32B32A32
C33B33A33
C34B34A34
C35B35A35
C36B36A36
C37B37A37
C38B38A38
C39B39A39
C40B40A40
J13
NUT #2-56 SS
2
Mounting hardware for J13
SCREW 2-56x.500
2Qty
Qty
All resistors are 1% toleranceunless otherwise specified
2014 Microchip Technology Inc. DS50002263B-page 51
dsP
IC®
DS
C S
ign
al Bo
ard
DS
50
00
22
63
B-p
ag
e 5
2
20
14
Micro
chip
Te
chn
olo
gy In
c.
powered
PIM:50_PWR:C27_EXP:22PIM:49_PWR:A28_EXP:21
.3k603
68
DNP
1 23 4
5 6
J8DVDD
PIM:87_PWR:A14_EXP:3012_EXP:32 PIM:88_PWR:C13_EXP:31
(DAC CLK)(DAC DATA)
DGND DGND
0RR83
0RR84
1 2DNP
1 2J11J11a
FIGURE A-3: dsPIC® DSC SIGNAL BOARD SCHEMATIC REVISION 1.0 (SHEET 3 OF 5)
Isolated part – USB Powered Unisolated part – DVDD
USBDATAVIEW PORT
4
1
5
2
3
0
J35V_USB
GND_USB
16V0.1 μF0603
C36
16V0.1 μF0603
C34
4.7k0603
R31
5V_USB
USB_PUSB_N
USB_P
USB_N
1k0603
R321k0603
R33
5V_USB
5V_USB
GND_USB
GND_USB
GND_USB
GND_USB5V_USB
GND_USB16V0.1 μF0603
C35
5V_USB
GND_USB
DVDD
16V0.1 μF0603
C37
DVDD
MCP2200_TXMCP2200_RX
GND_USB
VDD1OSC12
OSC23
RST4
GP7/TxLED5GP6/RxLED6
GP57
GP48
GP39TX10 RTS 11RX 12CTS 13GP2 14GP1 15GP0 16VUSB 17D- 18D+ 19VSS 20
MCP2200
U2
GREEN
12
LD7RED
12
LD8
ADUM1201CRZ
VDD11
VOA2
VIB3
GND14
VDD2 8
VIA 7
VOB 6
GND2 5
U3
2
31
12 MHzX1
DGND
DGND
GND_USB
16V0.1 μF0603
C70
12
34
DNP
J6
GND_USB
5V_USB
MCP2200_TXMCP2200_RX
3.3k0603
R6730
R
DVDD DVDD
PIM:91_PWR:C(DAC CS)
J9
Black TPDNP
TP19
GND_USB
All resistors are 1% toleranceunless otherwise specified
ID
VBUS
GND
D-
D+
Sc
he
matics
an
d L
ayo
ut
2
01
4 M
icroch
ip T
ech
no
log
y Inc.
DS
50
00
22
63
B-p
ag
e 5
3
FIG
DGND
169kR60
15kR62
D
+5V
DGND
105k0603
R71
15kR127
D
DVDD
D
D
10 μF50V1210
C60
10 μF50V1210
C66
GREEN
12
LD5
RED
12
LD6
1k 1%0603
R128
1k0603
R129
DGND
DGND
+5V
DVDD
DNP
R19
DNP
R20
DGND
DNP
R21
DNP
R22
Red TP
TP10
DNPR90
DNPR92
DNPR94
DNPR96
PIM:101_PWR:C24
PIM:103_PWR:C19
PIM:104_PWR:A18
PIM:102_PWR:C21
PIM:101
PIM:103
PIM:104
PIM:102
P93
DNPC94
AGND
Au
URE A-4: dsPIC® DSC SIGNAL BOARD SCHEMATIC REVISION 1.0 (SHEET 4 OF 5)
MCP16301
BO
OST
1G
ND
2
VFB 3EN4
SW 6
VIN5
U4
DGNDDGND DGND
0.1 μF16V 0603
C41 1N4148
D3
22 μH
L1
MBRS1100T3GD5
DGND DGND DGND
40.2k0603
R35
6.49k0603
R61
DGND
Voltage: 5.6V
DGNDDGN
MCP16301
BO
OST
1G
ND
2
VFB 3EN4
SW 6VIN5
U6
DGND
DGND DGND
0.1 μF16V 0603
C611N4148
D6
22 μH
L2
MBRS1100T3G
D38
DGND
DGND DGND
40.2k0603
R64
10k0603
R125
DGND
Voltage: 4V (J18 open)
DGNDDGN
20kR72
24.9kR126
10 μF50V1210
C4210 μF50V1210
C43
10 μF50V1210
C6310 μF50V1210
C62
10 μF50V1210
C5810 μF50V1210
C59
10 μF50V1210
C6410 μF50V1210
C65
1 2 3J14
CLOCAL
CLOCAL
DNP
D4
DGND
DNP
D37
DGND
DVDD AVDDDC+
MRA4005
D39
MRA4005
D40
DCLOCAL
100 Ohm
FB1
1 2J18
1 2J19
DGND
DGND AGND
DNP
R24
DNP
R23
AVDD
AGND
10k0603
R25
10k0603
R26
+A3
-A4
OUTA 1
VSS
VDD
25
MCP6021U1
AVDD
AGND
PIM:28_PWR:A34
Orange TP
TP1
Orange TP
TP2
Red TP
TP3
Red TP
TP9 Red TP
TP6Black TP
TP4
Black TP
TP5
Yellow TP
TP7
Yellow TP
TP8White TP
TP11
0R 1206
R58
0R 1206
R59
0.1 μF060316V
C730.1 μF060316V
C72
0.1 μF060316V
C71
AGND
AGND
AGND
AVDD
JACK Power 2.1 mm Male
231J17
DNPR65
DNPR66
Black TP
TP12
Black TP
TP13
Black TP
TP14
DGND DGND DGND
Black TP
TP15
Black TP
TP16
AGND AGND
DGND
DNP
R74
DNP
R75
DGND
PGND
0R 1206
R130
Black TP
TP18
PGND AGND0R
R29
DGND AGND
1000 pF50V0603
C301k
0603
R81
20R0603
R82
DNP
21
D9
AGND
SMBJ3V3D33
AGND
AVDD
DGND
Black TP
TP20
MCP1826-ADJE/ET
SHDN1
VIN2
GND 3
VOUT4
ADJ5
U5
MCP1826-ADJE/ET
SHDN1
VIN2
GND 3
VOUT4
ADJ5
U7
100 Ohm
FB2
91R 0603
R34
91R 0603
R63
14R0603
R85
14R0603
R86
470 pF50V
0603
C85
470 pF50V
0603
C86
DGND
DGND
10 μF16V
0805
C87
DGND
10 μF16V
0805
C88
DGND
0RR89
0RR91
0RR93
0RR95
DNPC89
AGND
DNPC91
AGND
DNC
AGND
0RR99
0RR100
J14a
J14a defaultJ14 Pins 1 & 2
ll resistors are 1% tolerancenless otherwise specified
Voltage: 5.6V (J18 shorted)
dsP
IC®
DS
C S
ign
al Bo
ard
DS
50
00
22
63
B-p
ag
e 5
4
20
14
Micro
chip
Te
chn
olo
gy In
c.
LT
LT
BAS40-04
1
23
D31 1k0603
R79PIM:83_PWR:B21_FLTPIM:83_PWR:B21
470 pF50V0603
C81
AGNDAGND
AVDD
06030.1 μF 16V
C80
BAS40-04
1
23
D32 1k0603
R80PIM:84_PWR:C14_EXP:29_FLTPIM:84_PWR:C14_EXP:29
470 pF50V0603
C83
AGND
AGND
AVDD
06030.1 μF 16V
C82
PIM:97_PWR:C9_EXP:231k
0603
R27PIM:97_PWR:C9_EXP:23_FLT
470 pF50V0603
C6
AGND
BAS40-04
1
23
D2
AGND
AVDD
06030.1 μF 16V
C4
0R0603
R38PIM:74_PWR:B18_FLTPIM:74_PWR:B18
DNPC10
AGND
BAS40-04
1
23
D7
AGND
AVDD
06030.1 μF 16V
C31
T
PIM:71_PWR:B190R
0603
R49PIM:71_PWR:B19_FLT
DNPC21
AGND
BAS40-04
1
23
D25
AGND
AVDD
06030.1 μF 16V
C56
0R
R48PIM:69_PWR:A15_EXP:28_FLTPIM:69_PWR:A15_EXP:28
DNPC20
AGND
BAS40-04
1
23
D24
AGND
AVDD
06030.1 μF 16V
C55
T
FIGURE A-5: dsPIC® DSC SIGNAL BOARD SCHEMATIC REVISION 1.0 (SHEET 5 OF 5)
BAS40-04
1
23
D28 1k0603
R76PIM:76_PWR:B17_FLTPIM:76_PWR:B17
470 pF50V0603
C75
AGNDAGND
AVDD
06030.1 μF 16V
C74
BAS40-04
1
23
D29 0R0603
R77PIM:77_PWR:A17_FPIM:77_PWR:A17
DNPC77
AGNDAGND
AVDD
06030.1 μF 16V
C76
BAS40-04
1
23
D30 1k0603
R78PIM:79_PWR:B16_FPIM:79_PWR:B16
470 pF50V0603
C79
AGNDAGND
AVDD
06030.1 μF 16V
C78
BAS40-04
1
23
D1 0R0603
R36PIM:73_PWR:C18_FLPIM:73_PWR:C18
DNPC8
AGNDAGND
AVDD
06030.1 μF 16V
C29
0R0603
R46PIM:67_PWR:B22_FLPIM:67_PWR:B22
DNPC18
AGND
BAS40-04
1
23
D23
AGND
AVDD
06030.1 μF 16V
C54
0R0603
R44PIM:66_PWR:C22_FLTPIM:66_PWR:C22
DNPC16
AGND
BAS40-04
1
23
D22
AGND
AVDD
06030.1 μF 16V
C53
0R0603
R50PIM:56_PWR:C25_FLTPIM:56_PWR:C25
DNPC22
AGND
BAS40-04
1
23
D20
AGND
AVDD
0R0603
R51PIM:57_PWR:B25_FLTPIM:57_PWR:B25
DNPC23
AGND
BAS40-04
1
23
D21
AGND
AVDD
06030.1 μF 16V
C51
06030.1 μF 16V
C52
PIM:54_PWR:B261k
0603
R45PIM:54_PWR:B26_FLT
470 pF50V0603
C17
AGND
BAS40-04
1
23
D12
AGND
AVDD
PIM:55_PWR:A260R
0603
R47PIM:55_PWR:A26_FLT
DNPC19
AGND
BAS40-04
1
23
D15
AGND
AVDD
06030.1 μF 16V
C46
06030.1 μF 16V
C40
AGND
1k0603
R39PIM:32_PWR:B33_EXP:13 PIM:32_PWR:B33_EXP:13_FLT
470 pF50V0603
C11
BAS40-04
1
23
D17
AGND
AVDD
1k0603
R52PIM:35_PWR:B32_FLTPIM:35_PWR:B32
470 pF50V0603
C24
AGND
BAS40-04
1
23
D19
AGND
AVDD
06030.1 μF 16V
C48
06030.1 μF 16V
C50
AGND
1k0603
R28
470 pF50V0603
C5
PIM:23_PWR:C35_EXP:11 PIM:23_PWR:C35_EXP:11_FLT
BAS40-04
1
23
D8
AGND
AVDD
AGND
1k0603
R30PIM:24_PWR:B35
470 pF50V0603
C7
PIM:24_PWR:B35_FLT
BAS40-04
1
23
D11
AGND
AVDD
AGND
1%1k
0603
R37
470 pF50V0603
C9
PIM:25_PWR:A35 PIM:25_PWR:A35_FLT
BAS40-04
1
23
D14
AGND
AVDD
06030.1 μF 16V
C32
06030.1 μF 16V
C39
06030.1 μF 16V
C45
1k0603
R42PIM:17_PWR:C37_FLTPIM:17_PWR:C37
470 pF50V0603
C14
AGND
BAS40-04
1
23
D10
AGND
AVDD
1k0603
R43PIM:20_PWR:C36_FLTPIM:20_PWR:C36
470 pF50V0603
C15
AGND
BAS40-04
1
23
D13
AGND
AVDD
1k0603
R40PIM:21_PWR:B36_FLTPIM:21_PWR:B36
470 pF50V0603
C12
AGND
BAS40-04
1
23
D16
AGND
AVDD
PIM:22_PWR:A361k
0603
R41PIM:22_PWR:A36_FLT
470 pF50V0603
C13
AGND
BAS40-04
1
23
D18
AGND
AVDD
06030.1 μF 16V
C38
06030.1 μF 16V
C44
06030.1 μF 16V
C47
06030.1 μF 16V
C49
1k0603
R56PIM:11_PWR:B5_EXP:08_FLTPIM:11_PWR:B5_EXP:08
470 pF50V0603
C67
AGND
BAS40-04
1
23
D26
AGND
AVDD
1k0603
R57PIM:14_PWR:A38_FLTPIM:14_PWR:A38
470 pF50V0603
C69
AGND
BAS40-04
1
23
D27
AGND
AVDD
06030.1 μF 16V
C57
06030.1 μF 16V
C68
0R0603
R88PIM:81_PWR:C15_FLTPIM:81_PWR:C15
DNPC90
AGND
BAS40-04
1
23
D35
AGND
AVDD
06030.1 μF 16V
C92
All resistors are 1% toleranceunless otherwise specified
Schematics and Layout
FIGURE A-6: dsPIC® DSC SIGNAL BOARD LAYOUT
2014 Microchip Technology Inc. DS50002263B-page 55
dsPIC® DSC Signal Board
NOTES:
DS50002263B-page 56 2014 Microchip Technology Inc.
dsPIC® DSC SIGNAL BOARD
USER’S GUIDEAppendix B. Electrical Specifications
B.1 INTRODUCTION
This chapter provides the electrical specifications of the dsPIC® DSC Signal Board (see Table B-1).
TABLE B-1: ELECTRICAL SPECIFICATIONS
Parameter Operating Range
Input DC Voltage 10V-24V ±10% (9V-26.4V)
Input DC Voltage (Connector J17) 24V
Operating Temperature Ambient +25°C
Output Power Supply 1 5V ±0.5% (4.975V-5.025V)
Output Power Supply 2 3.3V ±0.5% (3.316V-3.283V) or 5V ±0.5% (4.975V-5.025V)
Current from Power Supply 1 (Fixed +5V) 0-600 mA
Current from Power Supply 2 (+3.3V or +5V) 0-600 mA
2014 Microchip Technology Inc. DS50002263B-page 57
dsPIC® DSC Signal Board
NOTES:
DS50002263B-page 58 2014 Microchip Technology Inc.
dsPIC® DSC SIGNAL BOARD
USER’S GUIDEAppendix C. Design Calculations
C.1 INTRODUCTION
This chapter provides detailed information on the Power Supply 1 and Power Supply 2 design. Power Supply 1 has a fixed output of +5V, whereas the output of Power Supply 2 is configurable. Power Supply 1 and Power Supply 2 have the same power supply circuits. Power Supply 2 also has a parallel resistor RPIM in its feedback circuit for reconfiguring the output voltage.
C.2 DESIGN OF POWER SUPPLY CIRCUIT
The power supply circuit is designed in the following two stages:
1. First Stage of Power Supply Circuit Design
2. Second Stage of Power Supply Circuit Design
C.2.1 First Stage of Power Supply Circuit Design
The first stage of the power supply is a synchronous step-down converter (see Figure C-1). The Stage 1 power supply has the following specifications:
• Input Voltage (DC+) = 9V-26.4V
• Output Voltage (VBUCK) = 4V when Connector J18 is open
• Output Voltage (VBUCK) = 5.6V when Connector J18 is connected
FIGURE C-1: STAGE 1 POWER SUPPLY (APPLICATION CIRCUIT AROUND MCP16301)
The component values used in this circuit are listed in Table C-1, and were chosenusing Equation C-1 with VFB = 0.8V and K = 0.22V/H (see Note 1 in Table C-1).
L
COUT
CB
RSNU
RBOT1
RTOP1
RPIM1
RBOOST
CSNU
DB
DCIN
DCLOCAL(1) VIN
EN
SW
VFB
BOOST
GND
MCP16301
VBUCK
J18
Note 1: DCLOCAL comes from J17 or DC+.
2014 Microchip Technology Inc. DS50002263B-page 59
dsPIC® DSC Signal Board
EQUATION C-1:
A low forward drop Schottky diode is used for freewheeling diode D. The average diode current is calculated using Equation C-2. Based on these calculations, a MBRS1100T3G Schottky diode is selected.
EQUATION C-2:
A standard 1N4148 ultra-fast diode for boost diode DB was selected based on recom-mendations from the “MCP16301/H High-Voltage Input Integrated Switch Step-Down Regulator Data Sheet” (DS20005004). For more information about the snubber circuits, RSNU and CSNU, and series boost resistor, RBOOST, refer to AN1466, “Reduction of the High-Frequency Switching Noise in the MCP16301 High-Voltage Buck Converter” (DS01466) application note.
TABLE C-1: STAGE 1 POWER SUPPLY COMPONENT VALUES
Designator Power Supply 1 Power Supply 2
RTOP1 R35 = 40.2 k R64 = 40.2 k
RBOT1 R61 = 6.49 k R125 = 10 k
RPIM1 — R72 = 20 k
L L1 = 22 µH(1) L2 = 22 µH(1)
CB C41 = 0.1 µF(1) C61 = 0.1 µF(1)
CIN C42 = C43 = 10 µF(1) C62 = C63 = 10 µF(1)
COUT C58 = C59 = 10 µF(1) C64 = C65 = 10 µF(1)
VBUCK 5.6V +4V (J18 open) +5.6V (J18 shorted)
Note 1: These components are selected based on recommendations from the “MCP16301/H High-Voltage Input Integrated Switch Step-Down Regulator Data Sheet” (DS20005004).
RTOP1 RBOT1VBUCK
VFB---------------- 1– =
K VBUCK L=
ID AVG 1VBUCK
DCLOCAL-----------------------------–
IOUT=
DS50002263B-page 60 2014 Microchip Technology Inc.
Design Calculations
C.2.2 Second Stage of Power Supply Circuit Design
The second stage of the power supply is designed around a Low Dropout (LDO)MCP1826 (see Figure C-2). The second stage of the power supply has the followingspecifications:
• Input Voltage (VBUCK) = +4V (J18 is open) or +5.6V (J18 is shorted)
• Output Voltage (DVDD) = +3.3V when connector, J19, is open
• Output Voltage (DVDD) = +5V when connector, J19, is connected
FIGURE C-2: STAGE 2 POWER SUPPLY (APPLICATION CIRCUIT AROUND MCP1826)
If VADJ = 0.41V, then by using Equation C-3, the user can configure the component values as provided in Table C-2 for the application circuit shown in Figure C-2.
EQUATION C-3:
TABLE C-2: STAGE 2 POWER SUPPLY COMPONENT VALUES
Designator Power Supply 1 Power Supply 2
RTOP2 R60 = 169 k R71 = 105 k
RBOT2 R62 = 15 k R127 = 15 k
RPIM2 — R126 = 24.9 k
VOUT 5 V +3.3V (J19 open)+5V (J19 shorted)
CIN C87 = 10 µF(1) C88 = 10 µF(1)
COUT C60 = 10 µF(1) C66 = 10 µF(1)
Note 1: These components are selected based on the recommendations from the“MCP1826/MCP1826S 1000 mA, Low-Voltage, Low Quiescent Current LDO Regulator Data Sheet” (DS22057).
COUT
RPIM2
CIN
VBUCK VIN
SHDNVOUT
ADJ
GND
MCP1826-ADJ
DVDD
J19
RTOP2
RBOT2
DVDD VADJ
RTOP2 RBOT2+
RBOT2------------------------------------- =
2014 Microchip Technology Inc. DS50002263B-page 61
DS50002263B-page 62 2014 Microchip Technology Inc.
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