PICkit™ Serial I2C™
Demo Board
User’s Guide
© 2007 Microchip Technology Inc.
DS51657A
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and may be superseded by updates.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
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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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Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, KEELOQ logo, microID, MPLAB, PIC,
PICmicro, PICSTART, PRO MATE, PowerSmart, rfPIC, and
SmartShunt are registered trademarks of Microchip
Technology Incorporated in the U.S.A. and other countries.
AmpLab, FilterLab, Linear Active Thermistor, Migratable
Memory, MXDEV, MXLAB, PS logo, SEEVAL, SmartSensor
and The Embedded Control Solutions Company are
registered trademarks of Microchip Technology Incorporated
in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, ECAN,
ECONOMONITOR, FanSense, FlexROM, fuzzyLAB,
In-Circuit Serial Programming, ICSP, ICEPIC, Mindi, MiWi,
MPASM, MPLAB Certified logo, MPLIB, MPLINK, PICkit,
PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal,
PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB,
rfPICDEM, Select Mode, Smart Serial, SmartTel, Total
Endurance, UNI/O, WiperLock and ZENA are trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2007, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received ISO/TS-16949:2002 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona, Gresham, Oregon and Mountain View, California. 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.
DS51657A-page ii
© 2007 Microchip Technology Inc.
PICkit™ SERIAL I2C™ DEMO
BOARD USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 1
Introduction............................................................................................................ 1
Document Layout .................................................................................................. 1
Conventions Used in this Guide ............................................................................ 2
Recommended Reading........................................................................................ 3
The Microchip Web Site ........................................................................................ 3
Customer Support ................................................................................................. 3
Document Revision History ................................................................................... 4
Chapter 1. Product Overview ....................................................................................... 5
1.1 Introduction ..................................................................................................... 5
1.2 Highlights ........................................................................................................ 5
1.3 I2C Serial Communications ............................................................................ 6
1.4 What The PICkit™ Serial I2C™ Demo Board Kit Includes ............................. 6
Chapter 2. Installation and Operation ......................................................................... 7
2.1 I2C Demo Board Operation ............................................................................ 7
2.2 Devices ........................................................................................................... 8
Appendix A. Schematic and Layouts ........................................................................... 9
A.1 Introduction .................................................................................................... 9
A.2 Board - Schematic ....................................................................................... 10
A.3 Board - Top Silk Layer ................................................................................. 11
A.4 Board - Top Layer ........................................................................................ 11
A.5 Board - Bottom Layer ................................................................................... 11
Appendix B. Bill Of Materials (BOM) .......................................................................... 13
Worldwide Sales and Service .................................................................................... 14
© 2007 Microchip Technology Inc.
DS51657A-page iii
PICkit™ Serial I2C™ Demo Board User’s Guide
NOTES:
DS51657A-page iv
© 2007 Microchip Technology Inc.
PICkit™ SERIAL I2C™ DEMO
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
“DSXXXXXA”, where “XXXXX” 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 on-line help.
Select the Help menu, and then Topics to open a list of available on-line help files.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
PICkit™ Serial I2C™ Demo Board. Items discussed in this chapter include:
•
•
•
•
•
•
Document Layout
Conventions Used in this Guide
Recommended Reading
The Microchip Web Site
Customer Support
Document Revision History
DOCUMENT LAYOUT
This document describes how to use the PICkit™ Serial I2C™ Demo Board as a
development tool. The manual layout is as follows:
• Chapter 1. “Product Overview” – Important information about the PICkit™
Serial I2C™ Demo Board.
• Chapter 2. “Installation and Operation” – Includes instructions on how to use
the PICkit™ Serial I2C™ Demo Board.
• Appendix A. “Schematic and Layouts” – Shows the schematic and layout
diagrams for the PICkit™ Serial I2C™ Demo Board.
• Appendix B. “Bill Of Materials (BOM)” – Lists the parts used to build the
PICkit™ Serial I2C™ Demo Board.
© 2007 Microchip Technology Inc.
DS51657A-page 1
PICkit™ Serial I2C™ Demo Board User’s Guide
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Arial font:
Italic characters
Represents
Referenced books
Emphasized text
A window
A dialog
A menu selection
A field name in a window or
dialog
A menu path
MPLAB® IDE User’s Guide
...is the only compiler...
the Output window
the Settings dialog
select Enable Programmer
“Save project before build”
A dialog button
A tab
A number in verilog format,
where N is the total number of
digits, R is the radix and n is a
digit.
A key on the keyboard
Click OK
Click the Power tab
4‘b0010, 2‘hF1
Italic Courier New
Sample source code
Filenames
File paths
Keywords
Command-line options
Bit values
Constants
A variable argument
Square brackets [ ]
Optional arguments
Curly brackets and pipe
character: { | }
Ellipses...
Choice of mutually exclusive
arguments; an OR selection
Replaces repeated text
#define START
autoexec.bat
c:\mcc18\h
_asm, _endasm, static
-Opa+, -Opa0, 1
0xFF, ‘A’
file.o, where file can be
any valid filename
mcc18 [options] file
[options]
errorlevel {0|1}
Initial caps
Quotes
Underlined, italic text with
right angle bracket
Bold characters
N‘Rnnnn
Text in angle brackets < >
Courier New font:
Plain Courier New
Represents code supplied by
user
DS51657A-page 2
Examples
File>Save
Press <Enter>, <F1>
var_name [,
var_name...]
void main (void)
{ ...
}
© 2007 Microchip Technology Inc.
Preface
RECOMMENDED READING
This user's guide describes how to use PICkit™ Serial I2C™ Demo Board. Other useful
documents are listed below. The following Microchip documents are available and recommended as supplemental reference resources.
24AA02/24LC02B Data Sheet, "2K I2C Serial EEPROM" (DS21709)
This data sheet provides detailed information regarding the 24LC02B family.
MCP9800/1/2/3 Data Sheet, "2-Wire High-Accuracy Temperature Sensor"
(DS21909)
This data sheet provides detailed information regarding the MCP9801 product.
MCP3221 Data Sheet, "Low Power 12-Bit A/D Converter w/I2C Interface"
(DS21732)
This data sheet provides detailed information regarding the MCP3221 product.
TC1321 Data Sheet, "10-Bit Digital-to-Analog Converter w/Two-Wire Interface"
(DS21387)
This data sheet provides detailed information regarding the TC1321 product.
MCP23008/MCP23S08 Data Sheet, "8-Bit I/O Expander with Serial Interface"
(DS21919)
This data sheet provides detailed information regarding the MCP23008/MCP23S08
product.
MCP1525/41 Data Sheet, “2.5V and 4.096V Voltage Reference” (DS21653)
This data sheet provides detailed information regarding the MCP1525/41 product.
THE MICROCHIP WEB SITE
Microchip provides online support via our web site at www.microchip.com. This web
site is used as a means to make files and information easily available to customers.
Accessible by using your favorite Internet browser, the web site contains the following
information:
• Product Support – Data sheets and errata, application notes and sample
programs, design resources, user’s guides and hardware support documents,
latest software releases and archived software
• General Technical Support – Frequently Asked Questions (FAQs), technical
support requests, online discussion groups, Microchip consultant program
member listing
• Business of Microchip – Product selector and ordering guides, latest Microchip
press releases, listing of seminars and events, listings of Microchip sales offices,
distributors and factory representatives
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
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
© 2007 Microchip Technology Inc.
DS51657A-page 3
PICkit™ Serial I2C™ Demo Board User’s Guide
DOCUMENT REVISION HISTORY
Revision A (May 2007)
• Initial Release of this Document.
DS51657A-page 4
© 2007 Microchip Technology Inc.
PICkit™ SERIAL I2C™ DEMO
BOARD USER’S GUIDE
Chapter 1. Product Overview
1.1
INTRODUCTION
The PICkit™ Serial I2C™ Demo Board demonstrates I2C serial communications and
operation of the following devices:
•
•
•
•
•
24LC02B - 2Kbit Serial EEPROM
MCP9801 - High-Accuracy Temperature Sensor
MCP3221 - Low-Power 12-Bit A/D Converter
TC1321 - 10-Bit Digital-to-Analog Converter
MCP23008 - 8-Bit I/O Expander
The PICkit™ Serial I2C™ Demo Board was designed to easily connect to the PICkit
Serial Analyzer (DV164122). The PICkit Serial Analyzer provides the I2C master mode
serial communications and power. The PICkit™ Serial I2C™ Demo Board devices all
operate in the I2C slave mode. The PICkit™ Serial I2C™ Demo Board can easily be
connected to virtually any demo or development board by connecting the communications lines to connector P1.
1.2
HIGHLIGHTS
This chapter discusses:
•
•
•
I2C Serial Communications
I2C Demo Board Operation
I2C Demo Board Devices
ECO Applied to Rev. 1 Board
FIGURE 1-1:
PICkit™ Serial I2C™ Demo Board.
Note:
© 2007 Microchip Technology Inc.
Figure 1-1 shows the Rev. 1 board with an ECO (Engineering Change
Notice) applied to it. The Rev. 1 board with ECO and the Rev. 2 board are
electrically the same. Refer to Appendix A. “Schematic and Layouts” for
Rev. 2 schematics and board layouts.
DS51657A-page 5
PICkit™ Serial I2C™ Demo Board User’s Guide
1.3
I2C SERIAL COMMUNICATIONS
It is assumed that the user is familiar with I2C Serial Communications. For more information see:
• The I2C-Bus Specification Version 2.1 January 2000 is available from NXP
Semiconductor (formally Philips Semiconductor) website at
http://www.nxp.com/acrobat_download/literature/9398/39340011.pdf
• An I2C Master Communications tutorial is available on the Microchip Technology
website. Click on the links: Support --> Getting Started --> PIC MCU Tutorials -->
I2C Master Mode
• Several application notes are available on the Microchip Technology website.
Click on links: Design --> App Notes --> Function: Communications --> I2C
1.4
WHAT THE PICkit™ SERIAL I2C™ DEMO BOARD KIT INCLUDES
This PICkit™ Serial I2C™ Demo Board Kit includes:
• PICkit™ Serial I2C™ Demo Board (102-00134)
• Analog and Interface Products Demonstration Boards CD-ROM (DS21912)
- PICkit™ Serial I2C™ Demo Board User’s Guide (DS51657)
DS51657A-page 6
© 2007 Microchip Technology Inc.
PICkit™ SERIAL I2C™ DEMO
BOARD USER’S GUIDE
Chapter 2. Installation and Operation
2.1
I2C DEMO BOARD OPERATION
The PICkit™ Serial I2C™ Demo Board was designed to easily connect to the PICkit
Serial Analzyer (DV164122). Refer to the PICkit Serial Analyzer User’s Guide
(DS51647) chapter on I2C Master Communications mode for configuration and
operation information of the PICkit Serial Analyzer.
The PICkit Serial Analyzer provides the I2C master mode serial communications and
power. The PICkit™ Serial I2C™ Demo Board devices all operate in the I2C slave
mode. Figure 2-1 shows the PICkit™ Serial I2C™ Demo Board block diagram.
Pull-up resistors R2 and R3 are not populated. The PICkit Serial Analyzer can be
configured to enable internal pull-up resistors. When using the PICkit Serial Analyzer,
enable internal pull-up resistors. Or resistors R2 and R3 can be populated by the user
for use with other development boards or the PICkit Serial Analyzer internal pull-up
resistors disabled.
24LC02B
MCP9800
MCP3221
TC1321
MCP23008
SDA
SCL
FIGURE 2-1:
PICkit™ Serial I2C™ Demo Board Block Diagram.
Connector P1 connects to the PICkit Serial Analyzer or virtually any demo or
development board. Connector P1 pin assignments are listed in Table 2-1.
TABLE 2-1:
Pin
© 2007 Microchip Technology Inc.
I2C DEMO BOARD CONNECTOR P1 PIN ASSIGNMENTS
Label
Type
Description
1
—
—
2
+V
Power
No Connection
Power
3
GND
Ground
Ground
4
SDA
Input/Output
Serial Data
5
SCL
Input
Serial Clock
6
—
—
No Connection
DS51657A-page 7
PICkit™ Serial I2C™ Demo Board User’s Guide
2.2
DEVICES
2.2.1
24LC02B 2Kbit Serial EEPROM
The 24LC02B is a 2Kbit Serial EEPROM. Refer to the 24AA02/24LC02B Data Sheet
(DS21709) for complete information. The slave address is 0xAX (where x = any value).
Data can be read or written to the 24LC02B.
2.2.2
MCP9801 High-Accuracy Temperature Sensor
The MCP9801 is a High-Accuracy Temperature Sensor. Refer to the
MCP9800/MCP9801 Data Sheet (DS21909) for complete information. The slave
address is 0x92.
The temperature can be read from the MCP9801. Test points ALERT and GND provide
signals that can be read using a voltmeter or oscilloscope.
2.2.3
MCP3221 Low-Power 12-Bit A/D Converter
The MCP3221 is a Low Power 12-Bit A/D Converter. Refer to the MCP3221 Data Sheet
(DS21732) for complete information. The slave address is 0x9A.
Potentiometer R1 is configured as a voltage divider (see schematic in Appendix
A. “Schematic and Layouts”). The wiper is connected to the input. The voltage can
be read by the MCP3221 and can be verified using an volt meter on test points AIN and
GND.
2.2.4
TC1321 10-Bit Digital-to-Analog Converter
The TC1321 is a 10-Bit Digital-to-Analog Converter. Refer to the TC1321 Data Sheet
(DS21387) for complete information. The slave address is 0x90.
The VREF signal is generated by a MCP1525 2.5 Voltage Reference. The DAC output
voltage swing (VSW) will be between 0 - 2.5V.
The output of the TC1321 can be measured using a volt meter at test points VOUT,
DAC-OUT, and GND.
2.2.5
MCP23008 8-Bit I/O Expander
The MCP23008 is an 8-bit I/O Expander. Refer to the MCP23008/MCP23S08 Data
Sheet (DS21919) for complete information. The slave address is 0x40.
The output of the MCP23008 drives LEDs DS1 through DS8. The LEDs provide an
easy to see indication of the MCP23008 operation. Jumper JP1 must be closed using
a 2-pin shunt for the LEDs to operate. The LEDs can be disabled by removing JP1.
The output of the MCP23008 is connected to test points GP0 through GP7 and GND.
These test points can be monitored by a volt meter or connected to an external device.
LEDs DS1 through DS8 can be used to monitor the output by closing JP1 with a 2-pin
shunt or disable by removing JP1.
DS51657A-page 8
© 2007 Microchip Technology Inc.
PICkit™ SERIAL I2C™ DEMO
BOARD USER’S GUIDE
Appendix A. Schematic and Layouts
A.1
INTRODUCTION
This appendix contains the following schematics and layouts for the PICkit™ Serial
I2C™ Demo Board User’s Guide:
•
•
•
•
Board – Schematic
Board – Top Silk Layer
Board – Top Metal Layer
Board – Bottom Metal Layer
© 2007 Microchip Technology Inc.
DS51657A-page 9
PICkit™ Serial I2C™ Demo Board User’s Guide
A.2
BOARD - SCHEMATIC
DS51657A-page 10
© 2007 Microchip Technology Inc.
Schematic and Layouts
A.3
BOARD - TOP SILK LAYER
A.4
BOARD - TOP LAYER
A.5
BOARD - BOTTOM LAYER
© 2007 Microchip Technology Inc.
DS51657A-page 11
PICkit™ Serial I2C™ Demo Board User’s Guide
NOTES:
DS51657A-page 12
© 2007 Microchip Technology Inc.
PICkit™ SERIAL I2C™ DEMO
BOARD USER’S GUIDE
Appendix B. Bill Of Materials (BOM)
TABLE B-1:
Qty
BILL OF MATERIALS (BOM)
Reference
Description
Manufacturer
Part Number
5
C1, C2, C3, C4, CAP .1UF 16V CERAMIC X7R 0805
C5
Panasonic®
1
C6
Kemet
C0805C105K8RACTU
8
DS1, DS2, DS3, LED RED ORANGE CLEAR 0805
DS4, DS5, DS6, SMD
DS7, DS8
LITE-ON INC
LTST-C170EKT
4
EA Corner
BUMPON SQUARE .40X.10 BLACK
3M
SJ-5007 (BLACK)
1
JP1
CONN HEADER 2POS .100 VERT TIN Molex/Waldom
Electronics Corp
22-28-4020
1
JP1
CONN JUMPER SHORTING GOLD
FLASH
Sullins Electronics Corp.
SPC02SYAN
1
PCB
RoHS Compliant Bare PCB, PICkit
Serial I2C demo board
—
104-00134
1
P1
CONN HEADER 6POS .100 R/A
GOLD
Molex/Waldom
Electronics Corp
22-28-8062
1
R1
POT 10K OHM 3/8" SQ CERM SL MT
Bourns Inc.
3296W-1-103LF
2
R2, R3
DO NOT POPULATE
—
—
8
R4, R5, R6, R7, RES 1.0K OHM 1/8W 5% 0805 SMD
R8, R9, R10,
R11
Panasonic - ECG
ERJ-6GEYJ102V
20
TP1 - TP20
TEST POINT PC COMPACT SMT
Keystone Electronics®
5016
1
U1
IC SERIAL EEPROM 2K 2.5V 8-SOIC
Microchip Technology
Inc.
24LC02B-I/SN
1
U2
2-Wire High-Accuracy Temperature
Sensor
Microchip Technology
Inc.
MCP9800-M/SN
1
U3
Low Power 12-Bit A/D Converter With
I2C™ Interface
Microchip Technology
Inc.
MCP3221A5T-I/OT
1
U4
10-Bit Digital-to-Analog Converter with
Two-Wire Interface
Microchip Technology
Inc.
TC1321EOA
1
U5
8-Bit I/O Expander with Serial Interface Microchip Technology
Inc.
MCP23008-E/SO
1
U6
MCP1525, 2.5V Voltage Reference
MCP1525-I/TT
Note 1:
1UF 10V CERAMIC X7R 0805
- ECG
Microchip Technology
Inc.
ECJ-2VB1C104K
The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM
used in manufacturing uses all RoHS-compliant components.
© 2007 Microchip Technology Inc.
DS51657A-page 13
WORLDWIDE SALES AND SERVICE
AMERICAS
ASIA/PACIFIC
ASIA/PACIFIC
EUROPE
Corporate Office
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Tel: 480-792-7200
Fax: 480-792-7277
Technical Support:
http://support.microchip.com
Web Address:
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Tel: 31-416-690399
Fax: 31-416-690340
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
UK - Wokingham
Tel: 44-118-921-5869
Fax: 44-118-921-5820
China - Xian
Tel: 86-29-8833-7250
Fax: 86-29-8833-7256
12/08/06
DS51657A-page 14
© 2007 Microchip Technology Inc.