dsPIC® DSC Signal Board
User’s Guide
2014 Microchip Technology Inc.
DS50002263B
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and may be superseded by updates.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
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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.
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
QUALITY MANAGEMENT SYSTEM
CERTIFIED BY DNV
== ISO/TS 16949 ==
DS50002263B-page 2
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.
2014 Microchip Technology Inc.
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 BOARD
USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 7
Chapter 1. Introduction
1.1 Overview ...................................................................................................... 11
1.2 dsPIC DSC Signal Board Features .............................................................. 11
1.3 Functions ...................................................................................................... 12
1.4 Block Diagram .............................................................................................. 13
Chapter 2. Board Interface Description
2.1 Introduction ................................................................................................... 15
2.2 Highlights ...................................................................................................... 15
2.3 Board Connectors and Headers ................................................................... 15
2.4 User Interface Hardware .............................................................................. 33
2.5 Board Test Points ......................................................................................... 36
Chapter 3. Hardware Description
3.1 Introduction ................................................................................................... 39
3.2 Highlights ...................................................................................................... 39
3.3 Power Supply Circuit .................................................................................... 41
3.4 Voltage Reference Circuit ............................................................................ 43
3.5 Isolated USB Interface ................................................................................. 44
3.6 PIM Header Signals ..................................................................................... 45
3.7 Supply Voltage and Ground Connection ...................................................... 48
Appendix A. Schematics and Layout
A.1 Introduction .................................................................................................. 49
A.2 Board Schematics and Layout ..................................................................... 49
Appendix B. Electrical Specifications
B.1 Introduction .................................................................................................. 57
Appendix C. Design Calculations
C.1 Introduction .................................................................................................. 59
C.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 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
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.
2014 Microchip Technology Inc.
DS50002263B-page 7
dsPIC® DSC Signal Board
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Italic characters
Initial caps
Represents
Examples
Referenced books
MPLAB®
Emphasized text
...is the only compiler...
IDE User’s Guide
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:
This is a standard
note box.
CAUTION
This is a caution note.
Note 1: This is a note used in a
table.
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.
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 GUIDE
Chapter 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 connectors: 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 signals 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 microcontroller
and dsPIC DSC’s Plug-in Module (PIM) with internal or external op amp
configuration
• 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, I2C
and SPI interfaces
• Provides auxiliary power supply (DVDD = +3.3V or +5V) to various devices used
on 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:
Input Jack
(J17)
DC+
dsPIC® DSC SIGNAL BOARDBLOCK DIAGRAM
Power Supply 1
(Fixed +5V)
+5V
Power Supply 2
DVDD
DVDD = +3.3V/+5V
(selectable)
SPI Header
(J8)
ICSP Interface
(J1, J2)
DVDD
+5V
DC+
SW0 Reset
Isolated USB/UART
Interface (J3)
U2D
60-Pin
SW1
SW2
SW3
U
SW4
2
A
PIM Header U2
(105/100 Pins)
U
U
2
2
C
E
PICkit™ Serial
Analyzer I2C™/SPI
Interface (J10/J12)
C
O
N
N
Two 10 k
POTs
E
U2B
4 LEDs
C
T
O
Voltage
Reference
Low-Pass Filters
R
(J7)
DC+
+5V DVDD
120-Pin Connector (J13)
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 GUIDE
Chapter 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
Designator
Number of
Pins
J1
6
ICSP™ connector for programming a dsPIC® DSC or
microcontroller
J2
6
RJ11, 6-pin connector for programming a dsPIC DSC or
microcontroller
Description
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
J17
Note 1:
2014 Microchip Technology Inc.
2
Power board interface connector for application boards
Input power supply connector (24V)
See Table 2-12 and Table 2-14 for connection details.
DS50002263B-page 15
dsPIC® DSC Signal Board
FIGURE 2-1:
dsPIC® DSC SIGNAL BOARD CONNECTORS
J1
J3
J2
J17
J12
J6
J9
J10
J8
J4
J7
J5
®
J13
The on-board headers and connectors are described in the following sections:
•
•
•
•
•
•
•
•
•
•
•
DS50002263B-page 16
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)
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
Connectors
PIM
Pin #
Signal Name
Functional Description
Filter
No
J13
J7
J4
J5
B8
01
01
—
1
PIM:01_PWR:B8_EXP:01
Debug LED 1
2
DVDD
Digital Voltage (+3.3V/+5V)
3
PIM:03_PWR:A8_EXP:49
4
PIM:04_PWR:C7_EXP:02
5
PIM:05_PWR:B7_EXP:03
6
PIM:06_PWR:A7_EXP:04
7
PIM:07_PWR:C6_EXP:05
8
PIM:08_PWR:B6_EXP:06
—
No
B6
9
PIM:09_PWR:A6_EXP:07
—
No
A6
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)
No
—
25
25
—
14
PIM:14_PWR:A38_FLT
Yes
A38
—
—
—
15
DGND
Digital Ground
—
—
—
—
—
Digital Voltage (+3.3V/+5V)
—
—
—
—
—
No
A8
49
49
—
—
No
C7
02
—
02
—
No
B7
03
03
—
—
No
A7
04
—
04
—
No
C6
05
05
—
06
—
06
07
07
—
—
Device Master Clear (MCLR)
—
—
—
—
—
—
Yes
C37
—
—
—
B37
55
55
—
A37
10
—
10
C36
—
—
—
B36
—
—
—
—
—
—
11
11
—
—
—
—
—
—
—
C34
41
41
—
B34
42
—
42
A34
—
—
—
C33
12
—
12
16
DVDD
17
PIM:17_PWR:C37_FLT
18
PIM:18_PWR:B37_EXP:55
—
No
19
PIM:19_PWR:A37_EXP:10
—
No
20
PIM:20_PWR:C36_FLT
—
Yes
21
PIM:21_PWR:B36_FLT
—
Yes
22
PIM:22_PWR:A36_FLT
—
Yes
A36
23
PIM:23_PWR:C35_EXP:11_FLT
Yes
C35
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
27
PIM:27_PWR:B34_EXP:42
Device Programming Data Line (PGD)
No
28
PIM:28_PWR:A34
Reference Voltage (VREF)
No
29
PIM:29_PWR:C33_EXP:12
No
—
Potentiometer 2
—
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:
2:
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.
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
TABLE 2-2:
dsPIC® DSC SIGNAL BOARD PIM PINOUT FUNCTIONALITY (CONTINUED)
Connectors
PIM
Pin #
Signal Name
Functional Description
Filter
J13
J7
J4
J5
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
39
PIM:39_PWR:C31_EXP:17
40
PIM:40_PWR:B31_EXP:18
Push Button SW3
41
PIM:41_PWR:A31_EXP:56
Push Button SW4
42
PIM:42_PWR:C29
—
43
PIM:43_PWR:B29
—
44
PIM:44_PWR:A29
—
45
DGND
46
DVDD
47
PIM:47_PWR:C28_EXP:19
48
PIM:48_PWR:B28_EXP:20
49
PIM:49_PWR:A28_EXP:21(2)
UART Receive/I2C PICkit Interface
50
PIM:50_PWR:C27_EXP:22
UART Transmit
—
—
—
—
—
—
No
A32
16
—
16
No
C31
17
17
—
No
B31
18
—
18
No
A31
56
—
56
No
C29
—
—
—
No
B29
—
—
—
No
A29
—
—
—
Digital Ground
—
—
—
—
—
Digital Voltage (+3.3V/+5V)
—
—
—
—
—
—
No
C28
19
19
—
—
No
B28
20
—
20
No
A28
21
21
—
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
No
B24
57
57
—
60
PIM:60_PWR:A24_EXP:60
—
No
A24
60
—
60
—
No
C23
24
—
24
—
—
—
—
—
Debug LED 2
61
PIM:61_PWR:C23_EXP: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
—
—
—
Note 1:
2:
—
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.
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
TABLE 2-2:
dsPIC® DSC SIGNAL BOARD PIM PINOUT FUNCTIONALITY (CONTINUED)
Connectors
PIM
Pin #
Signal Name
Functional Description
Filter
J13
J7
J4
J5
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
-
—
—
—
76
PIM:76_PWR:B17_FLT
—
Yes
B17
—
—
—
77
PIM:77_PWR:A17_FLT
—
Yes
A17
—
—
—
78
PIM:78_PWR:C16_EXP:26
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
Yes
C14
29
29
—
85
PIM:85_PWR:B14
No
B14
—
—
—
86
DVDD
—
—
—
—
—
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
No
C12
32
—
32
92
PIM:92_PWR:B12
No
B12
—
—
—
Digital Ground
PICkit SPI Interface Data Out
Push Button SW2
—
Digital Voltage (+3.3V/+5V)
PICkit SPI Interface CS
—
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
—
—
No
C8
50
—
50
100 PIM:100_PWR:C8_EXP: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
—
—
—
No
C17
—
—
—
105 PIM:105_PWR:C17
Note 1:
2:
—
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.
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).
TABLE 2-3:
Pin #
PICkit™ PROGRAMMING HEADER (J1) PIN DESCRIPTION
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
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).
MPLAB® ICD 3/REAL ICE™ CONNECTOR (J2) PIN DESCRIPTION
TABLE 2-4:
Pin #
Signal Name
Pin Description
1
PIM:13 (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
2.3.4
Device Master Clear (MCLR)
—
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 2-5:
Pin #
DS50002263B-page 20
ISOLATED USB INTERFACE (J3) PIN DESCRIPTION
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
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).
TABLE 2-6:
Pin #
ALTERNATE USB/UART INTERFACE (J6) PIN DESCRIPTION
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
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).
TABLE 2-7:
Pin #
SPI INTERFACE CONNECTOR (J8) PIN DESCRIPTION
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
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).
TABLE 2-8:
Pin #
ADDITIONAL UART TX/RX INPUTS (J9) PIN DESCRIPTION
Signal Name
Pin Description
1
PIM:49_PWR:A28_EXP:21 UART Receive
2
PIM:50_PWR:C27_EXP:22 UART Transmit
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 2-9:
Pin #
PICkit™ SERIAL ANALYZER SPI INTERFACE (J10) PIN
DESCRIPTION
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).
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
6
No Connection
2.3.10
—
PICkit I2C Interface Serial Clock Interface
—
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 2-11:
Pin #
DS50002263B-page 22
INPUT POWER CONNECTOR (J17) PIN DESCRIPTION
Signal Name
Pin Description
1
EXT DC+
Input Supply Voltage
3
DGND
Digital Ground
3
DGND
Digital Ground
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
A1
Signal Name
DC+
PIM Connection/Functional Description
PIM Pin
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:
2:
3:
4:
Direct connection identifies the connection between the J13 connector pins and PIM pins that do not have
an analog filter at their input.
Filter signal identifies the connection between the J13 connector pins and PIM pins that have an analog filter.
DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
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
TABLE 2-12:
dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (CONTINUED)
Connector
J13
B11
Signal Name
PIM:95_PWR:B11
PIM Connection/Functional Description
PIM Pin
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
85
C14
PIM:84_PWR:C14_EXP:29 Filter Signal – Push Button SW2
Direct Connection
84
2C™
PICkit Interface
69
A15
PIM:69_PWR:A15_EXP:28 Filter Signal – Push Button SW1/I
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
79
B16
PIM:79_PWR:B16
C16
PIM:78_PWR:C16_EXP:26 Direct Connection – PICkit SPI Interface Data Out
Filter Signal
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
Note 1:
2:
3:
4:
Direct connection identifies the connection between the J13 connector pins and PIM pins that do not have
an analog filter at their input.
Filter signal identifies the connection between the J13 connector pins and PIM pins that have an analog filter.
DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
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
TABLE 2-12:
dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (CONTINUED)
Connector
J13
C24
Signal Name
PIM:101_PWR:C24
PIM Connection/Functional Description
PIM Pin
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
35
C32
PIM:34_PWR:C32_EXP:15 Direct Connection – Debug LED 4
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
A34
PIM:28_PWR:A34
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
Filter Signal
34
29
Direct Connection – Reference Voltage (VREF)
28
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
PIM:17_PWR:C37
Filter Signal
17
C37
Note 1:
2:
3:
4:
Direct connection identifies the connection between the J13 connector pins and PIM pins that do not have
an analog filter at their input.
Filter signal identifies the connection between the J13 connector pins and PIM pins that have an analog filter.
DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
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
TABLE 2-12:
dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (CONTINUED)
Connector
J13
A38
Signal Name
PIM:14_PWR:A38
PIM Connection/Functional Description
PIM Pin
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)
DVDD(3)
Digital Voltage (+3.3V/+5V)
—
Digital Voltage (+3.3V/+5V)
—
C40
Note 1:
2:
3:
4:
Direct connection identifies the connection between the J13 connector pins and PIM pins that do not have
an analog filter at their input.
Filter signal identifies the connection between the J13 connector pins and PIM pins that have an analog filter.
DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
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 Description
PIM
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)
—
+5V
Fixed +5V
—
B3
+5V
Fixed +5V
—
A1
DC+
Input DC Bus Voltage
—
A3
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
TABLE 2-13:
dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT
(GROUPED BY FUNCTIONALITY) (CONTINUED)
Connector
J13
Signal Name
Functional Description
PIM
Pin
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
DS50002263B-page 28
2014 Microchip Technology Inc.
Board Interface Description
TABLE 2-13:
Connector
J13
dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT
(GROUPED BY FUNCTIONALITY) (CONTINUED)
Signal Name
PIM
Pin
Functional 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
PIM:12_PWR:A5_EXP:09
Direct Connection
12
C34
A5
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
2C™
PICkit Interface
49
A28
PIM:49_PWR:A28_EXP:21
Direct Connection – UART Receive/I
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
2014 Microchip Technology Inc.
DS50002263B-page 29
dsPIC® DSC Signal Board
TABLE 2-13:
dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT
(GROUPED BY FUNCTIONALITY) (CONTINUED)
Connector
J13
Signal Name
Functional Description
PIM
Pin
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)
—
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 connected 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
1
PIM:01_PWR:B8_EXP:01
2
3
Functional Description
Header Header
J4
J5
—
PIM
Pin
Direct Connection – Debug LED 1
1
1
PIM:04_PWR:C7_EXP:02
Direct Connection
—
2
4
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
19
PIM:47_PWR:C28_EXP:19 Direct Connection
—
18
40
19
—
47
20
PIM:48_PWR:B28_EXP:20
21
PIM:49_PWR:A28_EXP:21
Direct Connection
—
20
48
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
23
—
97
24
PIM:61_PWR:C23_EXP:24 Direct Connection
—
24
61
25
PIM:13 (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
27
—
80
—
28
69
28
PIM:69_PWR:A15_EXP:28
Direct Connection – Push Button SW3
Filter Signal
Direct Connection – Device Master Clear (MCLR)
Direct Connection
2
Filter Signal – Push Button SW1/I C PICkit
Interface
29
PIM:84_PWR:C14_EXP:29 Filter Signal – Push Button SW2
29
—
84
30
PIM:87_PWR:A14_EXP:30
—
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
DGND
33
—
—
33
Note 1:
2:
Direct Connection – PICkit SPI Clock
Digital Ground
DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
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
TABLE 2-14:
dsPIC® DSC SIGNAL BOARD CONNECTORS, J7, J4 AND J5 PINOUT (CONTINUED)
Connector
J7
34
Signal Name
DGND
Header Header
J4
J5
Functional Description
Digital Ground
—
PIM
Pin
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
Analog Voltage (+3.3/+5V)
53
—
—
54
AVDD(2)
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
PIM:60_PWR:A24_EXP:60
Direct Connection
—
60
60
60
Note 1:
2:
DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.
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.
TABLE 2-15:
dsPIC® DSC SIGNAL BOARD JUMPERS
Jumper
Number
Designator of Pins
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 +5V
Position 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 of
Power Supply 2 is +5V; if the connectors J18 and J19 are open, then
the output is +3.3V(1)
J19
2
If the jumpers J18 and J19 are shorted on the PIM, then the output of
Power Supply 2 is +5V; if the connectors J18 and J19 are open, then
the output is +3.3V(1)
Note 1:
FIGURE 2-2:
Jumper Description
J18 and J19 must be in the same position for proper operation of the power
supply circuit.
dsPIC® DSC SIGNAL BOARD JUMPERS
J14
J14
J11
J11
J15
J15
J18
J18
J19
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 potentiometers. 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
SW0
SW1-SW4
POT1, POT2
DS50002263B-page 34
Hardware Element Description
Push button to reset the target device
General purpose push buttons; when momentarily pressed, the switch
connects the respective PIM pin to ground
10 k potentiometer
2014 Microchip Technology Inc.
Board Interface Description
FIGURE 2-3:
dsPIC® DSC SIGNAL BOARD USER INTERFACE
LD7-8
LD6
LD5
SW0
SW1
SW2
SW3
SW4
POT2
®
LD1-4
POT1
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
Signal
Name
TP1
—
Output of Buck Converter, U4 (MCP16301)
TP2
—
Output of Buck Converter, U6 (MCP16301)
Description
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, DGND
TP14, TP20
Digital Ground
TP15, TP16 AGND
Analog Ground
TP18
PGND
Power Ground
TP19
GND_USB
USB Ground
Note 1:
2:
3:
DS50002263B-page 36
TEST POINTS
DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into
the board.
AVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the
board.
VREF voltage level is configured as either +1.65V or +2.5V based on AVDD.
2014 Microchip Technology Inc.
Board Interface Description
FIGURE 2-4:
dsPIC® DSC SIGNAL BOARD TEST POINTS
TP3
TP14
TP19
TP9
TP20
TP6
TP10
TP2
TP1
TP7
TP4
TP8
TP5
®
TP11
TP18 TP16
TP12
TP13
TP15
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 GUIDE
Chapter 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
dsPIC® DSC SIGNAL BOARD HARDWARE SECTIONS
FIGURE 3-1:
10
8
6
7
9
1
2
11
13
12
14-b
3
®
4
5
14-a
15
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-b Analog Input Signal Conditioning
DS50002263B-page 40
14-a Analog Input Signal Conditioning
15
120-Pin Power Board Interface Connector for
Application Boards (J13)
2014 Microchip Technology Inc.
Hardware Description
3.3
POWER SUPPLY CIRCUIT
The dsPIC DSC Signal Board has two power supply circuits: Power Supply 1 and
Power 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
Power Supply 1
TP1
DCLOCAL
EN
J14
LDO
(MCP1826)
Buck Converter
(MCP16301)
+5V
12 3
Feedback
Feedback
Power Supply 2
TP2
DCLOCAL
DVDD
Buck Converter
(MCP16301)
LDO
(MCP1826)
Feedback
Feedback
J18
J19
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
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)
Note 1:
2:
For the power connector jack J17, a 24V power supply (AC002013) is
recommended.
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.
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
DC Local
Buck Converter
(MCP16301)
LDO
(MCP1826)
DVDD
J19
J18
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
R81
1k
C30
1000 pF
AVDD
R25
10k
D9
DNP
AGND
R26
10k
AGND
4 -A
U1
AVDD
5
VDD
MCP6021 OUTA
3
VSS
+A
TP11
1
R81
VREF
20R
C72
0.1 µF
2
C73 AGND
0.1 µF
AGND
AGND
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
0
PIM Header
RINT
REXT
Voltage Reference
2014 Microchip Technology Inc.
0DNP
Connector J13
DS50002263B-page 43
dsPIC® DSC Signal Board
TABLE 3-1:
3.5
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
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
TX
TX
ADUM1201CRZ
PIM
MCP2200
(USB-UART)
(Digital Isolator)
U3
RX
U2
RX
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.
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
1st Order
Low-Pass Filter
PIM:xx_PWR:yy_EXP:zz
‘zz’
‘xx’
PIM:xx_PWR:yy_EXP:zz_FLT
C
D
AVDD
C
AGND
PIM Header
Voltage Surge
Protection
Expansion Board
Connector (J7, J4, J5)
‘yy’
PIM:xx_PWR:yy_EXP:zz
Power Board Interface Connector J13
Note:
The signal connected to the PIM has the same name of the signal at the connector, with an added “_FLT” suffix to
indicate that the signal is filtered. The 1st order low-pass filter is implemented in hardware; however, the user can
remove the components or change their values to better fit the application requirements.
FIGURE 3-8:
TOPOLOGY 2
1st Order
Low-Pass Filter
R
D
‘xx’
PIM:xx_PWR:yy_FLT
C
AVDD
C
AGND
Voltage Surge
Protection
PIM Header
Expansion Board
Connector (J7, J4, J5)
‘yy’
PIM:xx_PWR:yy
Power Board Interface Connector J13
Note:
The signal connected to the PIM has the same name of the signal at the connector, with an added “_FLT” suffix
to indicate that the signal is filtered. The 1st order low-pass filter is implemented in hardware; however, the user
can 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
PIM:xx_PWR:yy_EXP:zz ‘zz’
‘xx’
PIM:xx_PWR:yy_EXP:zz
PIM Header
Expansion Board
Connector (J7, J4, J5)
‘yy’
PIM:xx_PWR:yy_EXP:zz
Power Board Interface Connector J13
FIGURE 3-10:
TOPOLOGY 4
‘xx’
PIM:xx_PWR:yy
PIM Header
Expansion Board
Connector (J7, J4, J5)
‘yy’
PIM:xx_PWR:yy
Power Board Interface Connector J13
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
1
Cutof f Frequency = --------------- 340 kHz
2RC
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 connected 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.
Note:
PGND is expected to be connected to DGND and AGND on application
boards. To avoid ground loops, PGND is not connected to AGND and
DGND on the dsPIC DSC Signal Board.
FIGURE 3-11:
GROUND INTERCONNECTION
R29
R74
R75
0
DNP
DNP
DGND
FIGURE 3-12:
AGND
DGND
PGND
AGND
CONNECTION OF AVDD TO DVDD
TP7
TP8
R130
AVDD
DVDD
0
DS50002263B-page 48
2014 Microchip Technology Inc.
dsPIC® DSC SIGNAL BOARD
USER’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
DVDD
SPST
PIM:69_PWR:A15_EXP:28_FLT
0.1 μF
0603
16V
DGND
DGND
DVDD
R8
4.7k
0603
C25
0.1 μF
0603
16V
DGND
R2
R7
J15
1
2
SW3
1
J15a
4.7k
0603
1
R13
PIM:84_PWR:C14_EXP:29_FLT
3
4.7k
0603
4
U2C
AVDD
PIM:32_PWR:B33_EXP:13_FLT
PIM:33_PWR:A33_EXP:14
PIM:34_PWR:C32_EXP:15
PIM:35_PWR:B32_FLT
DVDD
PIM:38_PWR:A32_EXP:16
PIM:39_PWR:C31_EXP:17
PIM:40_PWR:B31_EXP:18
PIM:41_PWR:A31_EXP:56
PIM:42_PWR:C29
PIM:43_PWR:B29
R97
R98
R87
0R
0R
0R
PIM:44_PWR:A29
DVDD
PIM:47_PWR:C28_EXP:19
PIM:48_PWR:B28_EXP:20
PIM:49_PWR:A28_EXP:21
PIM:50_PWR:C27_EXP:22
2014 Microchip Technology Inc.
1x25
PIM:51_PWR:B27_EXP:58
PIM:52_PWR:A27_EXP:59
PIM:53_PWR:C26
PIM:54_PWR:B26_FLT
PIM:55_PWR:A26_FLT
PIM:56_PWR:C25_FLT
PIM:57_PWR:B25_FLT
PIM:58_PWR:A25
PIM:59_PWR:B24_EXP:57
PIM:60_PWR:A24_EXP:60
PIM:61_PWR:C23_EXP:24
DVDD
PIM:63 (OSC1)
PIM:64 (OSC2)
X2
8 MHz
C33
C84
33 pF
50V
0603
33 pF
50V
0603
DGND
DGND
PIM:66_PWR:C22_FLT
PIM:67_PWR:B22_FLT
PIM:68_PWR:A22
PIM:69_PWR:A15_EXP:28_FLT_PICKIT
PIM:70_PWR:A21
PIM:71_PWR:B19_FLT
PIM:72_PWR:A19
PIM:73_PWR:C18_FLT
PIM:74_PWR:B18_FLT
1x25
1x25
DGND
1x25
DGND
PIM:51_PWR:B27_EXP:58
PIM:52_PWR:A27_EXP:59
PIM:53_PWR:C26
PIM:54_PWR:B26_FLT
PIM:55_PWR:A26_FLT
PIM:56_PWR:C25_FLT
PIM:57_PWR:B25_FLT
PIM:58_PWR:A25
PIM:59_PWR:B24_EXP:57
PIM:60_PWR:A24_EXP:60
PIM:61_PWR:C23_EXP:24
DVDD
PIM:63 (OSC1)
PIM:64 (OSC2)
PIM:66_PWR:C22_FLT
PIM:67_PWR:B22_FLT
PIM:68_PWR:A22
PIM:69_PWR:A15_EXP:28_FLT_PICkit
PIM:70_PWR:A21
PIM:71_PWR:B19_FLT
PIM:72_PWR:A19
PIM:73_PWR:C18_FLT
PIM:74_PWR:B18_FLT
PIM:101
PIM:102
PIM:103
PIM:104
PIM:105_PWR:C17
1x30
DGND
PICkit™ SPI
J10
PAD1 PAD2 PAD3 PAD4 PAD5
RUBBER PAD 0.50x0.50x0.23
DVDD
PIM:91_PWR:C12_EXP:32
SJ-5518
All resistors are 1% tolerance
unless otherwise specified
6
5
4
3
2
1
DNP
DGND
1
1
LD3
LD4
GREEN
GREEN
GREEN
DGND
DGND
DGND
J1
PIM:26_PWR:C34_EXP:41
PIM:27_PWR:B34_EXP:42
U2E
AGND
PIM:78_PWR:C16_EXP:26
PIM:87_PWR:A14_EXP:30
PIM:88_PWR:C13_EXP:31
LD2
GREEN
DVDD
PIM:13 (MCLR)
U2D
PIM:76_PWR:B17_FLT
PIM:77_PWR:A17_FLT
PIM:78_PWR:C16_EXP:26
PIM:79_PWR:B16_FLT
PIM:80_PWR:A16_EXP:27
PIM:81_PWR:C15_FLT
PIM:82_PWR:B15
PIM:83_PWR:B21_FLT
PIM:84_PWR:C14_EXP:29_FLT
PIM:85_PWR:B14
DVDD
PIM:87_PWR:A14_EXP:30
PIM:88_PWR:C13_EXP:31
PIM:89_PWR:B13
PIM:90_PWR:A13
PIM:91_PWR:C12_EXP:32
PIM:92_PWR:B12
PIM:93_PWR:A12_EXP:46
PIM:94_PWR:C11_EXP:45
PIM:95_PWR:B11
PIM:96_PWR:A11
PIM:97_PWR:C9_EXP:23_FLT
PIM:98_PWR:B9_EXP:48
PIM:99_PWR:A9_EXP:47
PIM:100_PWR:C8_EXP:50
25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
PIM:26_PWR:C34_EXP:41
PIM:27_PWR:B34_EXP:42
PIM:28_PWR:A34
PIM:29_PWR:C33_EXP:12
(PGC)
(PGD)
DGND
U2B
(PGC)
(PGD)
0.1 μF
0603
16V
DGND
1k
0603
LD1
DGND
C28
0.1 μF
0603
16V
R18
1k
0603
PIM:41_PWR:A31_EXP:56
4.7k
0603
SPST
DGND
U2A
R14
3
2
R17
1k
0603
1 2 3 4 5 6
4
SW4
R16
2
R12
4.7k
0603
DGND
1k
0603
1x6 RA
J2
1 2 3 4 5 6
SW2
R11
25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
DGND
DGND
R15
AGND
2
DVDD
C27
DVDD
PIM:17_PWR:C37_FLT
PIM:18_PWR:B37_EXP:55
DGND
PIM:19_PWR:A37_EXP:10
PIM:20_PWR:C36_FLT
PIM:21_PWR:B36_FLT
PIM:22_PWR:A36_FLT
PIM:23_PWR:C35_EXP:11_FLT
PIM:24_PWR:B35_FLT
PIM:25_PWR:A35_FLT
0.1 μF
0603
16V
DGND
SPST
C95
PIM:40_PWR:B31_EXP:18
4.7k
0603
C26
100R
0603
2
DNP
R9
3
SPST
DGND
1
PIM:01_PWR:B8_EXP:01
DVDD
PIM:03_PWR:A8_EXP:49
PIM:04_PWR:C7_EXP:02
PIM:05_PWR:B7_EXP:03
PIM:06_PWR:A7_EXP:04
PIM:07_PWR:C6_EXP:05
PIM:08_PWR:B6_EXP:06
PIM:09_PWR:A6_EXP:07
PIM:10_PWR:C5
PIM:11_PWR:B5_EXP:08_FLT
PIM:12_PWR:A5_EXP:09
PIM:13 (MCLR)
PIM:14_PWR:A38_FLT
4
2
DVDD
AGND
4.7k
0603
PIM:69_PWR:A15_EXP:28_FLT_PICKIT
1
0.1 μF
0603
16V
SPST
C2
AGND
4
3
2
1
C1
PIM:13 (MCLR)
PIM:34_PWR:C32_EXP:15
AGND
1%
100R
0603
1
R6
470R
0603
2
3
0R
0603
0.1 μF
0603
16V
10k
3386F
10%
4
3
2
R10
C3
R1 (POT 1)
2
1
4.7k
0603
SW1
2
R54
SW0
R4
4.7k
0603
RESET
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
PIM:32_PWR:B33_EXP:13_FLT
10k
3386F
10%
PIM:33_PWR:A33_EXP:14
3
1
AVDD
R3 (POT 2)
2
0R
0603
PIM:59_PWR:B24_EXP:57
1
R55
PIM:23_PWR:C35_EXP:11_FLT
DVDD
R5
PIM:01_PWR:B8_EXP:01
AVDD
RJ-11
DGND
PICkit I2C™
PIM:49_PWR:A28_EXP:21
PIM:69_PWR:A15_EXP:28_FLT_PICKIT
DVDD
J12
6
5
4
3
2
1
DNP
DGND
dsPIC® DSC Signal Board
DS50002263B-page 50
dsPIC® DSC SIGNAL BOARD SCHEMATIC REVISION 1.0 (SHEET 1 OF 5)
FIGURE A-1:
Schematics and Layout
dsPIC® DSC SIGNAL BOARD SCHEMATIC REVISION 1.0 (SHEET 2 OF 5)
(PWR CONNECTOR)
PIM:01_PWR:B8_EXP:01
PIM:05_PWR:B7_EXP:03
PIM:07_PWR:C6_EXP:05
PIM:09_PWR:A6_EXP:07
PIM:12_PWR:A5_EXP:09
PIM:23_PWR:C35_EXP:11
PIM:32_PWR:B33_EXP:13
PIM:34_PWR:C32_EXP:15
PIM:39_PWR:C31_EXP:17
PIM:47_PWR:C28_EXP:19
PIM:49_PWR:A28_EXP:21
PIM:97_PWR:C9_EXP:23
PIM:13 (MCLR)
PIM:80_PWR:A16_EXP:27
PIM:84_PWR:C14_EXP:29
PIM:88_PWR:C13_EXP:31
J13
DVDD
R69
B40
A40
B39
A39
B38
A38
B37
A37
B36
A36
B35
A35
B34
A34
B33
A33
B32
A32
B31
A31
B30
A30
B29
A29
B28
A28
B27
A27
B26
A26
B25
A25
B24
A24
B23
A23
B22
A22
B21
A21
B20
A20
B19
A19
B18
A18
B17
A17
B16
A16
B15
A15
B14
A14
B13
A13
B12
A12
B11
A11
B10
A10
B9
A9
B8
A8
B7
A7
B6
A6
B5
A5
B4
A4
B3
A3
B2
A2
B1
A1
0R
PIM:14_PWR:A38
PIM:18_PWR:B37_EXP:55
PIM:19_PWR:A37_EXP:10
PIM:21_PWR:B36
PIM:22_PWR:A36
PIM:24_PWR:B35
PIM:25_PWR:A35
PIM:27_PWR:B34_EXP:42
PIM:28_PWR:A34
PIM:32_PWR:B33_EXP:13
PIM:33_PWR:A33_EXP:14
PIM:35_PWR:B32
PIM:38_PWR:A32_EXP:16
PIM:40_PWR:B31_EXP:18
PIM:41_PWR:A31_EXP:56
DGND
PIM:43_PWR:B29
PIM:44_PWR:A29
PIM:48_PWR:B28_EXP:20
PIM:49_PWR:A28_EXP:21
PIM:51_PWR:B27_EXP:58
PIM:52_PWR:A27_EXP:59
PIM:54_PWR:B26
PIM:55_PWR:A26
PIM:57_PWR:B25
PIM:58_PWR:A25
PIM:59_PWR:B24_EXP:57
PIM:60_PWR:A24_EXP:60
R70
0R R73
0R
PIM:67_PWR:B22
PIM:68_PWR:A22
PIM:83_PWR:B21
PIM:70_PWR:A21
DGND
DGND
PIM:71_PWR:B19
PIM:72_PWR:A19
PIM:74_PWR:B18
PIM:104_PWR:A18
PIM:76_PWR:B17
PIM:77_PWR:A17
PIM:79_PWR:B16
PIM:80_PWR:A16_EXP:27
PIM:82_PWR:B15
PIM:69_PWR:A15_EXP:28
PIM:85_PWR:B14
PIM:87_PWR:A14_EXP:30
PIM:89_PWR:B13
PIM:90_PWR:A13
PIM:92_PWR:B12
PIM:93_PWR:A12_EXP:46
PIM:95_PWR:B11
PIM:96_PWR:A11
PIM:98_PWR:B9_EXP:48
PIM:99_PWR:A9_EXP:47
PIM:01_PWR:B8_EXP:01
PIM:03_PWR:A8_EXP:49
PIM:05_PWR:B7_EXP:03
PIM:06_PWR:A7_EXP:04
PIM:08_PWR:B6_EXP:06
PIM:09_PWR:A6_EXP:07
PIM:11_PWR:B5_EXP:08
PIM:12_PWR:A5_EXP:09
AVDD
+5V
DC+
PGND
C40
DVDD
C39
C38
C37
PIM:17_PWR:C37
C36
PIM:20_PWR:C36
C35
PIM:23_PWR:C35_EXP:11
C34
PIM:26_PWR:C34_EXP:41
C33
PIM:29_PWR:C33_EXP:12
DGND
C32
PIM:34_PWR:C32_EXP:15
C31
PIM:39_PWR:C31_EXP:17
PIM:42_PWR:C29
C28
PIM:47_PWR:C28_EXP:19
(PGC)
C27
PIM:50_PWR:C27_EXP:22
C26
PIM:53_PWR:C26
C25
PIM:56_PWR:C25
C24
PIM:101_PWR:C24
AGND
AVDD
PIM:18_PWR:B37_EXP:55
PIM:59_PWR:B24_EXP:57
PIM:52_PWR:A27_EXP:59
PIM:61_PWR:C23_EXP:24
C22
PIM:66_PWR:C22
C21
PIM:102_PWR:C21
C20
PIM:103_PWR:C19
C18
PIM:73_PWR:C18
C17
PIM:105_PWR:C17
C16
PIM:78_PWR:C16_EXP:26
C15
PIM:81_PWR:C15
C14
PIM:84_PWR:C14_EXP:29
C13
PIM:88_PWR:C13_EXP:31
C12
PIM:91_PWR:C12_EXP:32
C11
PIM:94_PWR:C11_EXP:45
DGND
R53
0R
0603
(PGC)
DGND
AGND
C10
C9
+5V
PIM:26_PWR:C34_EXP:41
DVDD
PIM:94_PWR:C11_EXP:45
PIM:99_PWR:A9_EXP:47
PIM:03_PWR:A8_EXP:49
AVDD
PIM:18_PWR:B37_EXP:55
PIM:59_PWR:B24_EXP:57
PIM:52_PWR:A27_EXP:59
DGND
(PGD)
AVDD
PIM:41_PWR:A31_EXP:56
PIM:51_PWR:B27_EXP:58
PIM:60_PWR:A24_EXP:60
AGND
(EXP CONNECTOR)
PIM:04_PWR:C7_EXP:02
PIM:06_PWR:A7_EXP:04
PIM:08_PWR:B6_EXP:06
PIM:11_PWR:B5_EXP:08
PIM:19_PWR:A37_EXP:10
PIM:29_PWR:C33_EXP:12
PIM:33_PWR:A33_EXP:14
PIM:38_PWR:A32_EXP:16
PIM:40_PWR:B31_EXP:18
PIM:48_PWR:B28_EXP:20
PIM:50_PWR:C27_EXP:22
PIM:61_PWR:C23_EXP:24
PIM:78_PWR:C16_EXP:26
PIM:69_PWR:A15_EXP:28
PIM:87_PWR:A14_EXP:30
PIM:91_PWR:C12_EXP:32
DC+
DGND
+5V
PIM:27_PWR:B34_EXP:42
DVDD
PIM:93_PWR:A12_EXP:46
PIM:98_PWR:B9_EXP:48
PIM:100_PWR:C8_EXP:50
AVDD
PIM:41_PWR:A31_EXP:56
PIM:51_PWR:B27_EXP:58
PIM:60_PWR:A24_EXP:60
(PGD)
AGND
2x30 RA
PIM:97_PWR:C9_EXP:23
C8
PIM:100_PWR:C8_EXP:50
C7
PIM:04_PWR:C7_EXP:02
C6
PIM:07_PWR:C6_EXP:05
C5
DC+
DC+
+5V
PIM:27_PWR:B34_EXP:42
DVDD
PIM:93_PWR:A12_EXP:46
PIM:98_PWR:B9_EXP:48
PIM:100_PWR:C8_EXP:50
J5 DNP
J7
PIM:01_PWR:B8_EXP:01
PIM:05_PWR:B7_EXP:03
PIM:07_PWR:C6_EXP:05
PIM:09_PWR:A6_EXP:07
PIM:12_PWR:A5_EXP:09
PIM:23_PWR:C35_EXP:11
PIM:32_PWR:B33_EXP:13
PIM:34_PWR:C32_EXP:15
PIM:39_PWR:C31_EXP:17
PIM:47_PWR:C28_EXP:19
PIM:49_PWR:A28_EXP:21
PIM:97_PWR:C9_EXP:23
PIM:13 (MCLR)
PIM:80_PWR:A16_EXP:27
PIM:84_PWR:C14_EXP:29
PIM:88_PWR:C13_EXP:31
PIM:04_PWR:C7_EXP:02
PIM:06_PWR:A7_EXP:04
PIM:08_PWR:B6_EXP:06
PIM:11_PWR:B5_EXP:08
PIM:19_PWR:A37_EXP:10
PIM:29_PWR:C33_EXP:12
PIM:33_PWR:A33_EXP:14
PIM:38_PWR:A32_EXP:16
PIM:40_PWR:B31_EXP:18
PIM:48_PWR:B28_EXP:20
PIM:50_PWR:C27_EXP:22
PIM:61_PWR:C23_EXP:24
PIM:78_PWR:C16_EXP:26
PIM:69_PWR:A15_EXP:28
PIM:87_PWR:A14_EXP:30
PIM:91_PWR:C12_EXP:32
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
DNP J4
C23
C19
DC+
+5V
PIM:26_PWR:C34_EXP:41
DVDD
PIM:94_PWR:C11_EXP:45
PIM:99_PWR:A9_EXP:47
PIM:03_PWR:A8_EXP:49
C30
C29
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
57
59
59 57 55 53 51 49 47 45 43 41 39 37 35 33 31 29 27 25 23 21 19 17 15 13 11 9 7 5 3 1
60 58 56 54 52 50 48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2
FIGURE A-2:
PIM:10_PWR:C5
C4
C3
C2
Qty 2
C1
DC+
PGND
SCREW 2-56x.500
5650906-5
DGND
All resistors are 1% tolerance
unless otherwise specified
2014 Microchip Technology Inc.
Qty 2
DGND AGND
NUT #2-56 SS
Mounting hardware for J13
DS50002263B-page 51
Isolated part – USB Powered
dsPIC® DSC Signal Board
DS50002263B-page 52
dsPIC® DSC SIGNAL BOARD SCHEMATIC REVISION 1.0 (SHEET 3 OF 5)
FIGURE A-3:
Unisolated part – DVDD powered
5V_USB
C34
16V
0.1 μF
0603
5V_USB
R31
J3
1
USB_N
2
USB_P
3
4
1
3
4.7k
0603
DD+
ID
GND_USB
GND
R32
0
GND_USB
5
VBUS
12 MHz
2
5V_USB
X1
C37
U2
1
2
3
4
5
6
7
8
9
10
VDD
VSS
OSC1
D+
OSC2
DRST
VUSB
GP7/TxLEDGP0
GP6/RxLEDGP1
GP5
GP2
GP4
CTS
GP3
RX
TX
RTS
20
19
18
17
16
15
14
13
12
11
USB_P
USB_N
16V
0.1 μF
0603
GND_USB
C36
16V
0.1 μF
0603
GND_USB
GND_USB
DVDD
5V_USB
MCP2200_RX
MCP2200_TX
1k
0603
1
2
3
4
5V_USB
2
LD7
LD8
RED
1
1
MCP2200_RX
MCP2200_TX
5V_USB
2014 Microchip Technology Inc.
C70
All resistors are 1% tolerance
unless otherwise specified
16V
0.1 μF
0603
GND_USB
DVDD
VDD1VDD2
VOA VIA
VIB VOB
GND1GND2
8
7
6
5
DVDD
R67
R68
3.3k
0603
3.3k
0603
R83 0R
1
R84 0R
DNP
GND_USB
C35 GND_USB
16V
0.1 μF
0603
2
J11
PIM:50_PWR:C27_EXP:22
PIM:49_PWR:A28_EXP:21
J11a
ADUM1201CRZ
J6
4 3 2 1
2
5V_USB
GREEN
DGND
U3
MCP2200
R33
1k
0603
DVDD
GND_USB
1 2
DGND
J9 DNP
GND_USB
DVDD
TP19
DNP
Black TP
(DAC CS)
J8
5 3 1
6 4 2
DATAVIEW PORT
USB
PIM:91_PWR:C12_EXP:32
PIM:87_PWR:A14_EXP:30
PIM:88_PWR:C13_EXP:31
DNP
GND_USB
DGND
DGND
(DAC CLK)
(DAC DATA)
D4
R65
DNP
C43
C42
10 μF
50V
1210
4
10 μF
50V
1210
EN
0.1 μF
16V 0603
SW
VFB
6
MCP16301
R85
R61
14R
0603
6.49k
0603
D5
MBRS1100T3G
C85
J14
C87
C58
C59
10 μF
50V
1210
10 μF
50V
1210
C63
10 μF
50V
1210
1
VIN
4
EN
2
C62
5
R63
C61
91R 0603
0.1 μF
16V 0603
6
SW
GNDBOOST
U6
10 μF
50V
1210
VFB
DNP
ADJ
GND
MCP16301
DGND
169k
TP2
DNP
14R
0603
D38
DNP
DGND
10k
0603
MBRS1100T3G
U7
0R
2
100 Ohm
C88
1
10 μF
16V
0805
C65
10 μF
50V
1210
R125 R24
R72
20k
C86
10 μF
50V
1210
VIN
VOUT
5
SHDN
LD5
R71
ADJ
GND
3
MCP1826-ADJE/ET
TP13
TP14
Black TP
DGND
R126
R127 R22
24.9k
15k
+5V
DGND
DGND
TP15
TP16
DGND
J18
Black TP
0.1 μF
0603
16V
D40
Yellow TP
DGND
DC+
AGND
DVDD
TP8
R130
AGND
R25
Yellow TP
AVDD
0R 1206
2
DS50002263B-page 53
TP20
AGND
R75
DNP
All resistors are 1% tolerance
unless otherwise specified
DGND
DNP
PGND
PIM:101
TP11
U1
MCP6021
-A
R26
10k
0603
AGND
VDD
OUTA
1
VSS
+A
R29
C73
PGND
DGND
R82
R91
0R
20R
0603
D33
AGND
AGND
R93
C72
DNP
R129
1k
0603
PIM:101_PWR:C24
PIM:102
DNP
PIM:102_PWR:C21
LD6
RED
PIM:103
0R
PIM:28_PWR:A34
AGND
AVDD
SMBJ3V3
0R
AGND
0R
White TP
0.1 μF
0603
16V
0.1 μF AGND
0603
16V
AGND
R95
R92
TP18
Black TP
DGND
4
3
D9
DNP
Black TP
AVDD
10k
0603
MRA4005
R74
Red TP
0R
R96
1000 pF
50V
0603
AVDD
5
TP7
Red TP
R89
1k
0603
C30
Black TP
DCLOCAL
Red TP
AGND
2
MRA4005
J19
R81
TP5
Black TP
1 2
R90
1
TP9
TP6
DGND
DGND
1 2
C71
D39
TP10
DGND
AVDD
Red TP
DGND
DNP
DNP
PIM:103_PWR:C19
PIM:104
C89
C91
C93
C94
DNP
DNP
DNP
DNP
R94
DNP
PIM:104_PWR:A18
DGND
AGND AGND AGND AGND
Schematics and Layout
DGND
AGND
TP4
10 μF
50V
1210
DNP
Black TP
DGND
Black TP
TP3
C66
DNP
2
Black TP
DGND
GREEN
R21
105k
0603
DGND
3
2
1k 1%
0603
DVDD
4
DGND DGND
TP12
JACK Power 2.1 mm Male
J17
1
DVDD
R20
R128
FB2
R100
C64
470 pF
50V
0603
DGND DGND
R23
40.2k
0603
10 μF
50V
1210
DGND DGND
Voltage: 4V (J18 open)
Voltage: 5.6V (J18 shorted)
Orange TP
L2
R64
C60
DNP
DGND
R86
DGND
R19
R60
3
MCP1826-ADJE/ET
DGND
22 μH
DNP
DGND
SHDN
15k
DGND
3
D37
R66
4
DGND
D6
0R 1206
5
VOUT
R62
DGND DGND
1N4148
DCLOCAL
1
10 μF
16V
0805
+5V
VIN
470 pF
50V
0603
DGND
R59
U5
2
100 Ohm
40.2k
0603
J14a default DGND
J14 Pins 1 & 2
DGND DGND
FB1
0R
R35
3
1 2 3
DGND
Voltage: 5.6V
R99
22 μH
J14a
DNP
TP1
Orange TP
L1
1
0R 1206
VIN
91R 0603
1N4148
2
DCLOCAL
5
C41
1
R58
R34
GNDBOOST
U4
1
D3
2
2014 Microchip Technology Inc.
dsPIC® DSC SIGNAL BOARD SCHEMATIC REVISION 1.0 (SHEET 4 OF 5)
FIGURE A-4:
R56
PIM:11_PWR:B5_EXP:08
AVDD
C57
D26
2
3
1k
0603
BAS40-04
AGND
C68
0.1 μF 16V
0603
D27
2
3
1k
0603
BAS40-04
0.1 μF 16V
0603
D10
2
3
1k
0603
BAS40-04
AGND
C44
0.1 μF 16V
0603
D13
2
3
1k
0603
C47
3
1k
0603
BAS40-04
0.1 μF 16V
0603
C39
D18
2
3
1k
0603
C12
BAS40-04
3
1k
0603
BAS40-04
AVDD
C45
R37
0.1 μF 16V
0603
D14
2
3
1%
1k
0603
1
BAS40-04
AVDD
C48
0.1 μF 16V
0603
3
1k
0603
BAS40-04
C50
0.1 μF 16V
0603
C13
C51
3
1k
0603
0.1 μF 16V
0603
PIM:35_PWR:B32_FLT
BAS40-04
AGND
AGND
R45
AVDD
C40
0.1 μF 16V
0603
D12
2
3
1k
0603
BAS40-04
2014 Microchip Technology Inc.
AGND
D20
3
0R
0603
1
3
C74
C46
0.1 μF 16V
0603
2
AVDD
C52
0.1 μF 16V
0603
R47
0R
0603
D15
3
C19
DNP
1
BAS40-04
AGND
All resistors are 1% tolerance
unless otherwise specified
AGND
D21
3
0R
0603
1
C92
0.1 μF 16V
0603
0.1 μF 16V
0603
AGND
C76
PIM:57_PWR:B25_FLT
R77
PIM:77_PWR:A17
D29
2
3
0R
0603
1
0.1 μF 16V
0603
PIM:77_PWR:A17_FLT
C77
DNP
AGND
1
470 pF
50V
0603
1
BAS40-04
AGND
PIM:81_PWR:C15_FLT
C90
2
R78
D30
3
C78
0.1 μF 16V
0603
1
DNP
AVDD
C82
D32
2
3
1k
0603
PIM:84_PWR:C14_EXP:29_FLT
C83
470 pF
50V
0603
1
BAS40-04
BAS40-04
PIM:79_PWR:B16_FLT
1k
0603
AVDD
C79
470 pF
50V
0603
AGND
R27
PIM:97_PWR:C9_EXP:23
C4
0.1 μF 16V
0603
D2
2
3
1
BAS40-04
AGND
AGND
AGND
R80
PIM:84_PWR:C14_EXP:29
AGND
AVDD
BAS40-04
AGND
PIM:83_PWR:B21_FLT
C81
AGND
PIM:79_PWR:B16
AGND
0R
0603
1k
0603
AGND
C23
R88
3
3
0.1 μF 16V
0603
BAS40-04
BAS40-04
D35
D31
2
AGND
DNP
2
R79
PIM:83_PWR:B21
C80
470 pF
50V
0603
BAS40-04
C22
R51
PIM:81_PWR:C15
AVDD
AGND
AGND
AGND
AGND
PIM:55_PWR:A26_FLT
DNP
BAS40-04
PIM:56_PWR:C25_FLT
DNP
2
C10
1
AVDD
C75
1
0.1 μF 16V
0603
BAS40-04
PIM:57_PWR:B25
AGND
PIM:55_PWR:A26
AVDD
C17
470 pF
50V
0603
1
3
AGND
PIM:76_PWR:B17_FLT
1k
0603
D28
2
AGND
R50
AGND
PIM:54_PWR:B26_FLT
R76
PIM:76_PWR:B17
AVDD
PIM:54_PWR:B26
PIM:74_PWR:B18_FLT
0R
0603
D7
2
0.1 μF 16V
0603
AGND
AGND
R38
PIM:74_PWR:B18
C31
DNP
BAS40-04
AGND
DNP
BAS40-04
AVDD
C8
1
0.1 μF 16V
0603
AVDD
C24
470 pF
50V
0603
1
2
C29
C11
R52
D19
PIM:56_PWR:C25
AVDD
3
C21
1
AGND
PIM:73_PWR:C18_FLT
0R
0603
D1
3
0.1 μF 16V
0603
AGND
R36
PIM:71_PWR:B19_FLT
0R
0603
D25
2
AGND
PIM:35_PWR:B32
AVDD
DNP
2
AVDD
AGND
R49
PIM:71_PWR:B19
C56
BAS40-04
AGND
DNP
BAS40-04
AVDD
C18
1
PIM:73_PWR:C18
PIM:32_PWR:B33_EXP:13_FLT
470 pF
50V
0603
1
2
470 pF
50V
0603
PIM:67_PWR:B22_FLT
0R
0603
3
1
AGND
R46
D23
C20
3
0.1 μF 16V
0603
AGND
2
C54
0.1 μF 16V
0603
C9
AGND
D17
2
AGND
0R
D24
2
C55
DNP
BAS40-04
PIM:69_PWR:A15_EXP:28_FLT
PIM:69_PWR:A15_EXP:28
AVDD
C16
1
AVDD
PIM:25_PWR:A35_FLT
R39
PIM:32_PWR:B33_EXP:13
C53
PIM:67_PWR:B22
AGND
PIM:25_PWR:A35
3
0.1 μF 16V
0603
C7
470 pF
50V
0603
1
AGND
PIM:22_PWR:A36_FLT
470 pF
50V
0603
1
D11
PIM:24_PWR:B35_FLT
PIM:66_PWR:C22_FLT
0R
0603
D22
2
AVDD
R48
R44
PIM:66_PWR:C22
AGND
R30
AGND
PIM:21_PWR:B36_FLT
R41
BAS40-04
2
PIM:23_PWR:C35_EXP:11_FLT
C5
470 pF
50V
0603
1
0.1 μF 16V
0603
AGND
AGND
C49
C15
470 pF
50V
0603
1
1k
0603
AGND
PIM:20_PWR:C36_FLT
R40
D16
2
PIM:22_PWR:A36
AVDD
AVDD
AGND
PIM:21_PWR:B36
0.1 μF 16V
0603
C14
470 pF
50V
0603
BAS40-04
3
PIM:24_PWR:B35
AGND
1
D8
2
AGND
PIM:17_PWR:C37_FLT
R43
AGND
AVDD
C69
470 pF
50V
0603
1
PIM:20_PWR:C36
AVDD
PIM:14_PWR:A38_FLT
R42
PIM:17_PWR:C37
C38
C32
0.1 μF 16V
0603
AGND
AGND
AVDD
AVDD
AGND
470 pF
50V
0603
1
R28
PIM:23_PWR:C35_EXP:11
AGND
R57
PIM:14_PWR:A38
AVDD
C67
470 pF
50V
0603
1
0.1 μF 16V
0603
PIM:11_PWR:B5_EXP:08_FLT
1k
0603
PIM:97_PWR:C9_EXP:23_FLT
C6
470 pF
50V
0603
AGND
dsPIC® DSC Signal Board
DS50002263B-page 54
dsPIC® DSC SIGNAL BOARD SCHEMATIC REVISION 1.0 (SHEET 5 OF 5)
FIGURE A-5:
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 GUIDE
Appendix 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 GUIDE
Appendix 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)
DB
MCP16301
RBOOST CB
BOOST
L
DCLOCAL(1)
CIN
VBUCK
SW
VIN
EN
D
COUT
RSNU
CSNU
RTOP1
VFB
GND
RBOT1
RPIM1
J18
Note 1:
DCLOCAL comes from J17 or DC+.
The component values used in this circuit are listed in Table C-1, and were chosen
using Equation C-1 with VFB = 0.8V and K = 0.22V/H (see Note 1 in Table C-1).
2014 Microchip Technology Inc.
DS50002263B-page 59
dsPIC® DSC Signal Board
EQUATION C-1:
V BUCK
RTOP1 = R BOT1 ---------------–1
V
FB
K = V BUCK L
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)
µF(1)
C64 = C65 = 10 µF(1)
COUT
C58 = C59 = 10
VBUCK
Note 1:
5.6V
+4V (J18 open)
+5.6V (J18 shorted)
These components are selected based on recommendations from the
“MCP16301/H High-Voltage Input Integrated Switch Step-Down Regulator Data
Sheet” (DS20005004).
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:
V BUCK
I D AVG = 1 – ---------------------------- I OUT
DCLOCAL
A standard 1N4148 ultra-fast diode for boost diode DB was selected based on recommendations 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.
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 following
specifications:
• 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)
MCP1826-ADJ
VIN
VBUCK
CIN
DVDD
VOUT
SHDN
RTOP2
COUT
ADJ
GND
RBOT2
RPIM2
J19
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:
R TOP2 + R BOT2
DV DD = V ADJ -------------------------------------
R BOT2
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
5V
+3.3V (J19 open)
+5V (J19 shorted)
CIN
C87 = 10 µF(1)
C88 = 10 µF(1)
(1)
C66 = 10 µF(1)
COUT
Note 1:
2014 Microchip Technology Inc.
C60 = 10 µF
These components are selected based on the recommendations from the
“MCP1826/MCP1826S 1000 mA, Low-Voltage, Low Quiescent Current LDO
Regulator Data Sheet” (DS22057).
DS50002263B-page 61
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