GPIO Expander Keypad and LCD
Demo Board
User’s Guide
© 2006 Microchip Technology Inc.
DS51636A
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
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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and may be superseded by updates.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.
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OTHERWISE, RELATED TO THE INFORMATION,
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conveyed, implicitly or otherwise, under any Microchip
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Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, 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, Migratable Memory, MXDEV, MXLAB,
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, Linear Active
Thermistor, Mindi, MiWi, MPASM, 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
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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.
© 2006, 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®
8-bit MCUs, 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.
DS51636A-page ii
© 2006 Microchip Technology Inc.
GPIO EXPANDER KEYPAD
AND LCD DEMO BOARD
USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 1
Introduction............................................................................................................ 1
Document Layout .................................................................................................. 1
Conventions Used in this Guide ............................................................................ 2
Recommended Reading........................................................................................ 2
The Microchip Web Site ........................................................................................ 3
Customer Support ................................................................................................. 3
Document Revision History ................................................................................... 3
Chapter 1. Product Overview ....................................................................................... 5
1.1 Introduction ..................................................................................................... 5
1.2 What is the GPIO Expander Keypad and LCD Demo Board? ....................... 5
1.3 What The GPIO Expander Keypad and LCD Demo Board Kit Includes ........ 5
Chapter 2. Installation and Operation ......................................................................... 7
2.1 Introduction ..................................................................................................... 7
2.2 Features ......................................................................................................... 7
2.3 Getting Started ............................................................................................... 8
2.4 GPIO Expander Keypad and LCD Demo Board Description ......................... 9
2.5 Firmware Description ................................................................................... 10
Appendix A. Schematics and Board Layouts ........................................................... 15
A.1 Introduction .................................................................................................. 15
A.2 Board Schematic - Page 1 ......................................................................... 16
A.3 Board Schematic - Page 2 ......................................................................... 17
A.4 Board Schematic - Page 3 ......................................................................... 18
A.5 Board - Top Layer (with Silk screen) .......................................................... 19
A.6 Board - Bottom Layer ................................................................................. 19
Appendix B. Bill Of Materials (BOM) ......................................................................... 21
Worldwide Sales and Service .................................................................................... 24
© 2006 Microchip Technology Inc.
DS51636A-page iii
GPIO Expander Keypad and LCD Demo Board User’s Guide
NOTES:
DS51636A-page iv
© 2006 Microchip Technology Inc.
GPIO EXPANDER KEYPAD
AND LCD 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.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
GPIO Expander Keypad and LCD 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 GPIO Expander Keypad and LCD Demo
Board as a development tool. The manual layout is as follows:
• Chapter 1. “Product Overview” – Important information about the GPIO
Expander Keypad and LCD Demo Board.
• Chapter 2. “Installation and Operation” – Includes instructions on how to get
started with this evaluation board.
• Appendix A. “Schematics and Board Layouts” – Shows the schematic and
layout diagrams for the GPIO Expander Keypad and LCD Demo Board.
• Appendix B. “Bill Of Materials (BOM)” – Lists the parts used to build the GPIO
Expander Keypad and LCD Demo Board.
© 2006 Microchip Technology Inc.
DS51636A-page 1
GPIO Expander Keypad and LCD Demo Board User’s Guide
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Arial font:
Italic characters
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
Examples
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: { | }
Choice of mutually exclusive
arguments; an OR selection
File>Save
Press <Enter>, <F1>
#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}
RECOMMENDED READING
For more information regarding the Stand-Alone CAN controller, CAN I/O Expander,
and CAN transceiver devices, refer to the appropriate data sheet. Table 1 shows the
device and associated Data Sheet literature number. These documents can be found
at Microchip’s web site at: www.microchip.com.
TABLE 1: DEVICES AND DATA SHEET LITERATURE NUMBERS
Device
DS51636A-page 2
Literature #
Device
Literature #
MCP23X08
DS21919
PIC18F4550
DS39632
MCP23X17
DS21952
MCP1702
DS22008
© 2006 Microchip Technology Inc.
Preface
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
Development Systems Information Line
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
DOCUMENT REVISION HISTORY
Revision A (October 2006)
• Initial Release of this Document.
© 2006 Microchip Technology Inc.
DS51636A-page 3
GPIO Expander Keypad and LCD Demo Board User’s Guide
NOTES:
DS51636A-page 4
© 2006 Microchip Technology Inc.
GPIO EXPANDER KEYPAD
AND LCD DEMO BOARD
USER’S GUIDE
Chapter 1. Product Overview
1.1
INTRODUCTION
This chapter provides an overview of the GPIO Expander Keypad and LCD Demo
Board and covers the following topics:
• What is the GPIO Expander Keypad and LCD Demo Board?
• What the GPIO Expander Keypad and LCD Demo Board Kit includes
1.2
WHAT IS THE GPIO EXPANDER KEYPAD AND LCD DEMO BOARD?
The GPIO Expander Keypad and LCD Demo Board allows the system designer to
evaluate the operation of the MCP23X17 and MCP23X08 General Purpose I/O (GPIO)
Expanders. The board demonstrates the GPIO Expanders’ performance in a keypad
and LCD example.
1.3
WHAT THE GPIO EXPANDER KEYPAD AND LCD DEMO BOARD KIT
INCLUDES
This GPIO Expander Keypad and LCD Demo Board Kit includes:
• One GPIO Expander Keypad and LCD Demo Board (102-00116)
- MCP23008 GPIO Expander with I2C™ interface (installed)
- MCP23S08 GPIO Expander with SPI interface (installed)
- MCP23017 GPIO Expander with I2C™ interface (installed)
- MCP23S17 GPIO Expander with SPI interface (installed)
• Analog and Interface Products Demonstration Boards CD-ROM (DS21912)
- GPIO Expander Keypad and LCD Demo Board User’s Guide (DS51636)
- PIC® Microcontroller Firmware
- PCB Gerber Files
© 2006 Microchip Technology Inc.
DS51636A-page 5
GPIO Expander Keypad and LCD Demo Board User’s Guide
NOTES:
DS51636A-page 6
© 2006 Microchip Technology Inc.
GPIO EXPANDER KEYPAD
AND LCD DEMO BOARD
USER’S GUIDE
Chapter 2. Installation and Operation
2.1
INTRODUCTION
This chapter discusses the setup and operation of the GPIO Expander Keypad and
LCD Demo Board.
The GPIO Expander Keypad and LCD Demo Board is designed to demonstrate using
GPIO expanders in a keypad and LCD example. The MCP23X17 interfaces to a 2x16
LCD module and the MCP23X08 interfaces to a 4x4 keyed matrix.
Both the I2C™ and SPI versions are included on the board to demonstrate both serial
interfaces.
2.2
FEATURES
The GPIO Expander Keypad and LCD Demo Board has the following features:
• Two (2) 8-bit GPIO Expanders
- MCP23008 with I2C™ interface
- MCP23S08 with SPI interface
• Two (2) 16-bit GPIO Expanders
- MCP23017 with I2C™ interface
- MCP23S17 with SPI interface
• 4X4 keypad layout (16 momentary buttons)
- Numbers 0 - 9
- Six special function buttons
• A 2X16 LCD module
• Headers for the MCP23X08 and MCP23X17 pins
• Header for programming the PIC18F4550
© 2006 Microchip Technology Inc.
DS51636A-page 7
GPIO Expander Keypad and LCD Demo Board User’s Guide
2.3
GETTING STARTED
The GPIO Expander Keypad and LCD Demo Board is a fully functional, assembled and
tested board for demonstrating the MCP23008 and MCP23017 (I2C interface) and
MCP23S08 and MCP23S17 (SPI interface) general purpose I/O expanders. The
following describes the basic setup and operation (see Figure 2-1):
1. Either connect a 9V power supply into the power jack (J2) or connect a 5 V power
supply to the VDD and GND test points.
2. The green power LED will illuminate.
3. The LCD will display the startup splash screen.
4. The appropriate LEDs (I2C or SPI) will illuminate to indicate the current serial
mode.
5. Pressing buttons:
- 0 - 9, #, *: will be reflected on the LCD
- M: switches modes (I2C and SPI) to communicate with the MCP23X17 and
MCP23X08; B: backspace; R: carriage return, and screen clear (2nd
press); S: space
FIGURE 2-1:
BOARD LAYOUT
2 X 16 LCD
Not Populated
LED
9V
EXT
+5V
PIC18F2550
MCP23008
LED
LED
LED
ICSP
USB
MCP23S08
USB
I2C/SPI
MCP23017
MCP23S17
16-bit HEADER
8-bit HEADER
GPIO Expander
Keypad/LCD Demo
GND
M
DS51636A-page 8
7
8
9
M
4
5
6
B
1
2
3
R
*
0
#
S
© 2006 Microchip Technology Inc.
Installation and Operation
2.4
GPIO EXPANDER KEYPAD AND LCD DEMO BOARD DESCRIPTION
2.4.1
Major Board Components
The functional block diagram is shown in Figure 2-2.
FIGURE 2-2:
FUNCTIONAL BLOCK DIAGRAM
Header
Input
Output
IN
GPIO
OUT
2 X 16 LCD
Control
Power
Programming
1. The GPIO BLOCK contains the MCP23X17 and MCP23X08 GPIO Expanders.
Two (2) MCP23X17 devices are connected to the LCD module and two (2)
MCP23X08 devices are connected to the keypad matrix.
A button on the keypad toggles between I2C and SPI mode. When in I2C mode,
the MCP23017 and MCP23008 are controlled by the PIC MCU. When in SPI
mode, the MCP23S17 and MCP23S08 are controlled. Only one (1) MCP23X08
and one (1) MCP23X17 is on the bus at a time.
2. The CONTROL BLOCK contains the PIC18F4550 and is the main intelligence
in the system.
3. The INPUT BLOCK contains the 4x4 keypad matrix. The MCP23X08 devices
are used to scan the keys.
4. The OUTPUT BLOCK contains the 2x16 LCD. The MCP23X17 devices control
the display.
5. The MCP23X17 and MCP23X08 I/O and serial lines are routed to the HEADER
BLOCK to allow the pins to be probed.
6. The PROGRAMMING BLOCK contains the ICSP™ header for programming/debugging the PIC18F4550.
7. The POWER BLOCK contains the MCP1702 5V voltage regulator. The board
can be powered by a 9V supply (connected through the power jack) or by
applying 5V directly to the power points.
© 2006 Microchip Technology Inc.
DS51636A-page 9
GPIO Expander Keypad and LCD Demo Board User’s Guide
2.5
FIRMWARE DESCRIPTION
See Figure 2-3 for the main firmware flow diagram.
Main Function:
1. The firmware first configures the PIC MCU.
2. The MCP23X08 and MCP23X17 devices are configured. I2C Devices are
selected first by default. The SPI devices I/O are held in reset.
3. The LCD splash screen is shown.
4. Wait for an interrupt from the MCP23X08. An interrupt will occur when a button
is pressed. Four (4) inputs are configured to interrupt on falling edge. These
inputs are for the “columns” of the keypad matrix.
5. After the interrupt occurs, the firmware calls the Scan_Buttons routine.
6. Then the Update_LCD routine.
Scan_Buttons Function:
1. Read INTCAP register. This register contains a snapshot of the port condition
when the interrupt occurred.
2. Swap inputs and outputs so the rows can be read.
3. Read GPIO register and merge with variable containing INTCAP value.
4. The pressed key is determined by looking up the result in a lookup table.
Update_LCD Function:
1. The LCD is updated based on which button was pressed.
DS51636A-page 10
© 2006 Microchip Technology Inc.
Installation and Operation
FIGURE 2-3:
MAIN FIRMWARE FLOW
Start
Init_MCU
Init_MCP
Splash
NO
The MCP23X08 is
configured to interrupt on
falling edge for the
columns (4 inputs)
GPIO INT Flag
Set?
YES
Scan_Buttons
After the interrupt, the column
location of the button is known
and is contained in INTCAP.
Need to read GPIO to get the
Row location.
Buttons:
0-9, #, * : Copied to the LCD
M: Toggle mode (SPI and I2C™)
B: Backspace
R: Carriage Return
S: Space
Update_LCD
© 2006 Microchip Technology Inc.
DS51636A-page 11
GPIO Expander Keypad and LCD Demo Board User’s Guide
FIGURE 2-4:
KEYPAD SCAN
Scan_Buttons
Read INTCAP
One nibble is set to input and
the other nibble is output (to
read the columns) (already
configured before entering
function).
Read INTCAP and place in a
variable.
To read the rows.
Swap inputs and
outputs
Merge with variable
containing INTCAP value.
The result can be looked up
in a table (switch statement)
to determine which key was
pressed.
Read GPIO
Determine key
press from lookup
table
Set I/O back to
default so it is
correct the next
time the function is
called
END
DS51636A-page 12
© 2006 Microchip Technology Inc.
Installation and Operation
FIGURE 2-5:
LCD UPDATE
Update_LCD
The pressed button result
comes from the variable in
the Scan_Buttons function
1-9
#
Button Press?
M
B
S
*
R
Display
Backspace
Toggle Serial
Mode
(I2C or SPI)
Space
Carriage Return
Display #
Display *
END
© 2006 Microchip Technology Inc.
DS51636A-page 13
GPIO Expander Keypad and LCD Demo Board User’s Guide
NOTES:
DS51636A-page 14
© 2006 Microchip Technology Inc.
GPIO EXPANDER KEYPAD
AND LCD DEMO BOARD
USER’S GUIDE
Appendix A. Schematics and Board Layouts
A.1
INTRODUCTION
This appendix contains the schematic and PCB layout for the GPIO Expander Keypad
and LCD Demo Board. Diagrams included:
• Board Schematics - Pages 1 - 3.
• Board - Top Layer (with silk screen)
• Board - Bottom Layer
© 2006 Microchip Technology Inc.
DS51636A-page 15
GPIO Expander Keypad and LCD Demo Board User’s Guide
BOARD SCHEMATIC - PAGE 1
M
A.2
DS51636A-page 16
© 2006 Microchip Technology Inc.
Schematics and Board Layouts
BOARD SCHEMATIC - PAGE 2
M
A.3
© 2006 Microchip Technology Inc.
DS51636A-page 17
GPIO Expander Keypad and LCD Demo Board User’s Guide
BOARD SCHEMATIC - PAGE 3
M
A.4
DS51636A-page 18
© 2006 Microchip Technology Inc.
Schematics and Board Layouts
A.5
BOARD - TOP LAYER (WITH SILK SCREEN)
A.6
BOARD - BOTTOM LAYER
© 2006 Microchip Technology Inc.
DS51636A-page 19
GPIO Expander Keypad and LCD Demo Board User’s Guide
NOTES:
DS51636A-page 20
© 2006 Microchip Technology Inc.
GPIO EXPANDER KEYPAD
AND LCD DEMO BOARD
USER’S GUIDE
Appendix B. Bill Of Materials (BOM)
TABLE B-1:
BILL OF MATERIALS
Reference
Designator
Qty
Description
Manufacturer
Part Number
23
C1, C5, C6
CAP 1UF 16V CERAMIC Y5V 0805
C15, C25, C30,
C31, C32, C33,
C34, C35, C36,
C37, C38, C39,
C40, C41, C42,
C43, C44, C45,
C46, C47,
C48
Panasonic® - ECG
ECJ-2VF1C105Z
1
C3
CAP CER .33UF 16V Y5V 0805
Murata Electronics®
North America
GRM219F51C334ZA01D
2
C16, C17
CAP 22PF 50V CERM CHIP 0805 SMD
*Do Not Populate*
Panasonic - ECG
ECJ-2VC1H220J
1
C18
CAP .22UF 16V CERAMIC X7R 0805
Panasonic - ECG
ECJ-2VB1C224K
4
D1, D2, D3, D4 LED 636NM SUPER RED 0805 SMD
LITE-ON INC
SML-LX0805SIC-TR
2
D5, D6
DIODE SCHOTTKY 20V 0.5A SOD123
ON Semiconductor®
MBR0520LT1G
2
D7, D8
LED THIN 565NM GRN DIFF 0805
SMD
Optoelectronics
SML-LXT0805GW-TR
1
D9
RECT SCHOTTKY 1A 20V DO-214AA
Micro Commercial Co.
SMB5817-TP
4
EA Corner
BUMPON X-TALL TAPER SQ
.81X.30BK
3M/ESM
SJ-5523 (BLACK)
1
J1
*Do Not Populate*
—
—
1
J2
CONN POWER JACK 2.5MM PCB
CIRC
CUI Inc
PJ-102B
1
J3
*Do Not Populate*
—
—
1
J4
*Do Not Populate*
—
—
2
J5, J10
*Do Not Populate*
—
—
1
J9
CONN USB RTANG FEMALE TYPE B
PCB *Do Not Populate*
Assmann Electronics
Inc
AU-Y1007-R
1
LCD1
LCD_2x16
Fema
CG1626-SGR1
6
R1, R2, R3,
R8, R9, R53
RES 10.0K OHM 1/10W 1% 0805 SMD
Panasonic - ECG
ERJ-6ENF1002V
2
R4, R5
RES 270 OHM 1/8W 5% 0805 SMD
Panasonic - ECG
ERJ-6GEYJ271V
1
R6
RES 523 OHM 1/8W 1% 0805 SMD
Yageo®
2
R7, R54
RES 4.70K OHM 1/8W 1% 0805 SMD
Yageo Corporation
RC0805FR-074K7L
3
R24, R25, R35 RES 1.00K OHM 1/10W 1% 0805 SMD
Panasonic - ECG
ERJ-6ENF1001V
2
R29, R30
Panasonic - ECG
ERJ-6GEY0R00V
Note 1:
RES 0.0 OHM 1/8W 5% 0805 SMD
Corporation
RC0805FR-07523RL
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.
© 2006 Microchip Technology Inc.
DS51636A-page 21
GPIO Expander Keypad and LCD Demo Board User’s Guide
TABLE B-1:
BILL OF MATERIALS (CONTINUED)
Reference
Designator
Qty
Description
Manufacturer
Part Number
16
R32, R33, R34, RES 100 OHM 1/10W 3900PPM
R36, R37, R38, 5%0805
R39, R40, R41,
R42, R43, R44,
R45, R46, R47,
R48
Panasonic - ECG
1
R49
RES 33.2K OHM 1/8W 1% 0805 SMD
Yageo® Corporation
RC0805FR-0733K2L
2
R50, R52
RES 475 OHM 1/10W 1% 0603 SMD
Panasonic - ECG
ERJ-3EKF4750V
1
R51
RES 100K OHM 1/8W 5% 0805 SMD
Panasonic - ECG
ERJ-6GEYJ104V
17
S11, S12, S13, SWITCH TACT 6MM SMD MOM 160GF Omron Electronics Inc
S14, S15, S16,
S17, S18, S19,
S20, S21, S22,
S23, S24, S25,
S26, S27
1
TP1
TEST POINT PC MULTI PURPOSE
BLK
Keystone Electronics®
5011
1
TP2
TEST POINT PC MULTI PURPOSE
RED
Keystone Electronics
5010
1
U1
16 Bit I/O Expander with Serial Interface Microchip Technology
Inc
MCP23S17-E/SS
1
U2
8-Bit I/O Expander with SPI Interface
Microchip Technology
Inc
MCP23S08-E/SS
1
U3
16 Bit I/O Expander with Serial Interface Microchip Technology
Inc
MCP23017-E/SS
1
U4
8-Bit I/O Expander with I2C Interface
Microchip Technology
Inc
MCP23008-E/SS
1
U5
44-Pin, High-Performance, Enhanced
Flash, USB Microcontroller
Microchip Technology
Inc
PIC18F4550
1
U6
2 μA Low Dropout Positive Voltage
Regulator
Microchip Technology
Inc
MCP1702T-5002I/CB
1
U7
MOSFET P-CH 20V 850MA SSOT3
Fairchild
Semiconductor®
NDS352P
1
Y1
CRYSTAL 20.0000 MHZ SERIES RES
*Do Not Populate*
CTS-Frequency
Controls
ATS200
Note 1:
ERA-S39J101V
B3S-1000
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.
DS51636A-page 22
© 2006 Microchip Technology Inc.
Bill Of Materials (BOM)
NOTES:
© 2006 Microchip Technology Inc.
DS51636A-page 23
WORLDWIDE SALES AND SERVICE
AMERICAS
ASIA/PACIFIC
ASIA/PACIFIC
EUROPE
Corporate Office
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7200
Fax: 480-792-7277
Technical Support:
http://support.microchip.com
Web Address:
www.microchip.com
Asia Pacific Office
Suites 3707-14, 37th Floor
Tower 6, The Gateway
Habour City, Kowloon
Hong Kong
Tel: 852-2401-1200
Fax: 852-2401-3431
India - Bangalore
Tel: 91-80-4182-8400
Fax: 91-80-4182-8422
India - New Delhi
Tel: 91-11-4160-8631
Fax: 91-11-4160-8632
Austria - Wels
Tel: 43-7242-2244-39
Fax: 43-7242-2244-393
Denmark - Copenhagen
Tel: 45-4450-2828
Fax: 45-4485-2829
India - Pune
Tel: 91-20-2566-1512
Fax: 91-20-2566-1513
France - Paris
Tel: 33-1-69-53-63-20
Fax: 33-1-69-30-90-79
Japan - Yokohama
Tel: 81-45-471- 6166
Fax: 81-45-471-6122
Germany - Munich
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Atlanta
Alpharetta, GA
Tel: 770-640-0034
Fax: 770-640-0307
Boston
Westborough, MA
Tel: 774-760-0087
Fax: 774-760-0088
Chicago
Itasca, IL
Tel: 630-285-0071
Fax: 630-285-0075
Dallas
Addison, TX
Tel: 972-818-7423
Fax: 972-818-2924
Detroit
Farmington Hills, MI
Tel: 248-538-2250
Fax: 248-538-2260
Kokomo
Kokomo, IN
Tel: 765-864-8360
Fax: 765-864-8387
Los Angeles
Mission Viejo, CA
Tel: 949-462-9523
Fax: 949-462-9608
Santa Clara
Santa Clara, CA
Tel: 408-961-6444
Fax: 408-961-6445
Toronto
Mississauga, Ontario,
Canada
Tel: 905-673-0699
Fax: 905-673-6509
Australia - Sydney
Tel: 61-2-9868-6733
Fax: 61-2-9868-6755
China - Beijing
Tel: 86-10-8528-2100
Fax: 86-10-8528-2104
China - Chengdu
Tel: 86-28-8665-5511
Fax: 86-28-8665-7889
Korea - Gumi
Tel: 82-54-473-4301
Fax: 82-54-473-4302
China - Fuzhou
Tel: 86-591-8750-3506
Fax: 86-591-8750-3521
Korea - Seoul
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
China - Hong Kong SAR
Tel: 852-2401-1200
Fax: 852-2401-3431
Malaysia - Penang
Tel: 60-4-646-8870
Fax: 60-4-646-5086
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
China - Shanghai
Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
Taiwan - Hsin Chu
Tel: 886-3-572-9526
Fax: 886-3-572-6459
China - Shenzhen
Tel: 86-755-8203-2660
Fax: 86-755-8203-1760
Taiwan - Kaohsiung
Tel: 886-7-536-4818
Fax: 886-7-536-4803
China - Shunde
Tel: 86-757-2839-5507
Fax: 86-757-2839-5571
Taiwan - Taipei
Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Netherlands - Drunen
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
10/19/06
DS51636A-page 24
© 2006 Microchip Technology Inc.