MCP7384X Evaluation Kit User's Guide

M
MCP7384X Evaluation Kit
User’s Guide
 2003 Microchip Technology Inc.
DS51424A
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 intended through suggestion only
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
No representation or warranty is given and no liability is
assumed by Microchip Technology Incorporated with respect
to the accuracy or use of such information, or infringement of
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with express written approval by Microchip. No licenses are
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Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, MPLAB, PIC, PICmicro, PICSTART,
PRO MATE and PowerSmart are registered trademarks of
Microchip Technology Incorporated in the U.S.A. and other
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AmpLab, FilterLab, microID, MXDEV, MXLAB, PICMASTER,
SEEVAL and The Embedded Control Solutions Company are
registered trademarks of Microchip Technology Incorporated
in the U.S.A.
Application Maestro, dsPICDEM, dsPICDEM.net, ECAN,
ECONOMONITOR, FanSense, FlexROM, fuzzyLAB,
In-Circuit Serial Programming, ICSP, ICEPIC, microPort,
Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM,
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PowerMate, PowerTool, rfLAB, rfPIC, Select Mode,
SmartSensor, SmartShunt, SmartTel and Total Endurance are
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
Serialized Quick Turn Programming (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.
© 2003, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received QS-9000 quality system
certification for its worldwide headquarters,
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Chandler and Tempe, Arizona in July 1999
and Mountain View, California in March 2002.
The Company’s quality system processes and
procedures are QS-9000 compliant for its
PICmicro® 8-bit MCUs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals,
non-volatile memory and analog products. In
addition, Microchip’s quality system for the
design and manufacture of development
systems is ISO 9001 certified.
DS51424A-page ii
 2003 Microchip Technology Inc.
M
MCP7384X EVAL KIT
USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... v
Chapter 1. Product Overview
1.1
1.2
What is the MCP7384X Evaluation Board ................................................ 1
MCP7384X Evaluation Board Kit Components ....................................... 1
Chapter 2. MCP7384X Evaluation Board Installation
2.1
2.2
2.3
Features .................................................................................................. 3
Getting Started ........................................................................................ 3
Detailed Description ................................................................................ 4
Appendix A. Schematic and Layouts
A.1
A.2
A.3
A.4
A.5
A.6
Introduction .............................................................................................. 7
Highlights ................................................................................................. 7
Board Schematic ................................................................................... 8
Board - Top Assembly ........................................................................... 9
Board - Top Layer ................................................................................ 10
Board - Bottom Layer ........................................................................... 11
Appendix B. Bill-of-Materials (BOM)
Worldwide Sales and Service .................................................................................... 14
 2003 Microchip Technology Inc.
DS51424A-page iii
MCP7384X Eval Kit User’s Guide
NOTES:
DS51424A-page iv
 2003 Microchip Technology Inc.
M
MCP7384X EVAL KIT
USER’S GUIDE
Preface
INTRODUCTION
This section contains general information that will be useful to know before using the
MCP7384X Evaluation Board. This board currently supports the following devices:
• MCP73841, MCP73842, MCP73843, MCP73844
HIGHLIGHTS
This section covers the following topics:
•
•
•
•
About this Guide
Recommended Reading
The Microchip Internet Web Site
Customer Support
ABOUT THIS GUIDE
Document Layout
The User’s Guide layout is as follows:
• Chapter 1: Product Overview – Important information about the MCP7384X
Evaluation Board.
• Chapter 2: MCP7384X Evaluation Board Installation – For users evaluating the
MCP73841, MCP73842, MCP73843 or MCP73844 devices, this chapter
describes how to use the various features of the hardware.
Appendices:
• Appendix A: Schematic and Layouts – shows the schematic and layout
diagrams for the MCP7384X Evaluation Board.
• Appendix B: Bill of Materials – lists the parts used to build the MCP7384X
Evaluation Board.
• Worldwide Sales and Service – gives the address, telephone and fax number
for Microchip Technology Inc. sales and service locations throughout the world.
 2003 Microchip Technology Inc.
DS51424A-page v
MCP7384X Eval Kit User’s Guide
RECOMMENDED READING
For more information regarding the MCP7384X devices, the following is recommended
reading.
MCP7384X Data Sheet (DS21823)
This document provides detailed information regarding the MCP7384X
Advanced Single or Dual Cell Lithium-Ion/Lithium-Polymer Charge Management
Controllers.
Technical Library CD-ROM (DS00161)
This CD-ROM contains comprehensive application notes, data sheets and technical briefs for all Microchip products. To obtain this CD-ROM, contact the nearest Microchip Sales and Service location (see back page).
THE MICROCHIP INTERNET WEB SITE
Microchip provides easy access to our documentaition and on-line support through our
World Wide Web Site at www.microchip.com. You can download files from the web site
or from our FTP site at ftp://ftp.microchip.com.
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
•
•
•
•
•
Distributor or Representative
Local Sales Office
Field Application Engineer (FAE)
Corporate Applications Engineer (CAE)
Hot line
Customers should call their distributor, representative or field application engineer
(FAE) for support. Local sales offices are also available to help customers. See the
back cover for a listing of sales offices and locations.
Corporate applications engineers (CAEs) may be contacted at (480) 786-7627.
In addition, there is a Systems Information and Upgrade Line. This line provides system
users a listing of the latest versions of all of Microchip's development systems software
products. Plus, this line provides information on how customers can receive any
currently available upgrade kits.
The Hotline numbers are:
• 1-800-755-2345 for U.S. and most of Canada, and
• 1-480-786-7302 for the rest of the world.
DS51424A-page vi
 2003 Microchip Technology Inc.
M
MCP7384X EVAL KIT
USER’S GUIDE
Chapter 1. Product Overview
1.1
WHAT IS THE MCP7384X EVALUATION BOARD
The MCP7384X Evaluation Board is an evaluation and demonstration tool for
Microchip Technology’s MCP7384X Advanced Single or Dual Cell Lithium-Ion/
Lithium-Polymer Charge Management Controllers. The design provides for dynamic
versatility while being able to handle accurate measurements.
When connected, this evaluation board allows for the evaluation of the MCP7384X
devices in a variety of applications.
1.2
MCP7384X EVALUATION BOARD KIT COMPONENTS
The MCP7384X Evaluation Kit contains:
• MCP7384X Evaluation Board
• MCP73841-420I/UN, MCP73842-840I/UN and MCP73843-420I/MS Devices
installed
• MCP7384X Data Sheet (DS21823)
• MCP7384X Evaluation Kit User’s Guide (DS51424)
 2003 Microchip Technology Inc.
DS51424A-page 1
MCP7384X Eval Kit User’s Guide
NOTES:
DS51424A-page 2
 2003 Microchip Technology Inc.
M
MCP7384X EVAL KIT
USER’S GUIDE
Chapter 2. MCP7384X Evaluation Board Installation
2.1
FEATURES
The MCP7384X Evaluation Board has the following features:
•
•
•
•
•
•
2.2
Evaluation of MCP73841/42 in 10-pin MSOP packages
Evaluation of MCP73843/44 in 8-pin MSOP packages
Simple stand-alone operation or microcontroller compatible
Powered from external bench supply or voltage regulated wall cube
Surface-mount design
Fully assembled and tested
GETTING STARTED
The MCP7384X Evaluation Board is a fully functional, assembled, and tested surface
mount board for evaluation of Microchip’s MCP7384X Advanced Single or Dual Cell
Lithium-Ion/Lithim-Polymer Charge Management Controllers. The following steps
provide simple stand-alone operation. Refer to Figure 2-1 for the set-up configuration
diagram. The set-up configuration diagram depicts evaluation with circuit 1, MCP73841
operation. Note: Do not turn on the input power until all other set-up steps are
complete.
1. Connect an external bench supply or voltage regulated wall cube to the
appropriate circuit for evaluation.
CAUTION: Observe correct polarity of connection. Positive connects to VDDn;
negative connects to VSSn; where n represents the circuit to be
evaluated.
2. Connect a single or dual cell Li-Ion battery pack to the appropriate circuit for
evaluation. Circuits 1 and 3 support single cell applications; circuit 2 supports
dual cell applications based on the original devices installed.
CAUTION: Observe correct polarity of connection. Positive connects to VBATn;
negative connects to VSSn; where n represents the same circuit to be
evaluated as step 1.
3. For circuit 1 or circuit 2 evaluation, connect an external battery pack thermistor
to the appropriate THERM input. The thermistor should be connected from
THERMn to VSSn. If continuous cell temperature monitoring is not desired,
utilize circuit 3 or place a 10 kΩ resistor from THERMn to VSSn.
4. Turn on bench supply or plug in wall cube.
5. A GREEN LED should illuminate to indicate the presence of input power. A RED
LED provides status during the charge cycle. Refer to the MCP7384X Data
Sheet (DS21823) for details.
 2003 Microchip Technology Inc.
DS51424A-page 3
MCP7384X Eval Kit User’s Guide
+ Single
Lithium-Ion
Cell
CIRCUIT 1
UNREGULATED
WALL CUBE
CIRCUIT 2
CIRCUIT 3
FIGURE 2-1:
2.3
Set-up Configuration Diagram.
DETAILED DESCRIPTION
The MCP7384X Evaluation Board is designed to evaluate simple, stand-alone, linear
charging of single or dual cell Lithium-Ion/Lithium-Polymer battery packs. Two single
cell reference designs and one dual cell reference design are provided. Each reference
design can be evaluated independently and utilizes a different pass transistor, each in
a unique package, to demonstrate the versatility of the MCP7384X charge
management controllers. The reference designs provide constant current charging
followed by constant voltage charging with automatic charge termination. Three levels
of constant current, one for each reference design, are demonstrated: 500 mA, 1A and
275 mA for the two single cell reference designs and the dual cell reference design,
respectively. The MCP73841 is provided in a 10-pin MSOP package and is equipped
with shutdown control, status indicator, safety timer, and continuous cell temperature
monitor. The MCP73842 is provided in a 10-pin MSOP package and is equipped with
the same features as the MCP73841. The MCP73841 and MCP73842 provide charge
management for single and dual cell Lithium-Ion/Lithium-Polymer battery packs,
respectively. Alternatively, the MCP73843 is provided in an 8-pin MSOP package. The
MCP73843 provides charge management for single cell Lithium-Ion/Lithium-Polymer
battery packs. The MCP73843 is equipped with all the features of the MCP73841 and
MCP73842, with the exception of the cell temperature monitor. Refer to the MCP7384X
data sheet (DS21823) for details on the individual device features.
DS51424A-page 4
 2003 Microchip Technology Inc.
2.3.1
Input Source
The MCP7384X Evaluation Board is designed to provide typical fast charge currents of
1 A, 275 mA and 500 mA for circuits 1, 2 and 3, respectively. A 5V ±10%, 7.5W input
source should be utilized to power the evaluation kit when evaluating the single cell
charge management devices (MCP73841 and MCP73843). A 10V ±10%, 5W input
source should be utilized to power the evaluation kit when evaluating the dual cell
charge management device (MCP73842). Independent input source connections are
provided for each reference design.
Higher or lower fast charge currents can be obtained by adjusting the value of the
sense resistors (R6//R7, R9//R18 and R8 for circuits 1, 2 and 3, respectively). A
corresponding higher or lower power input source may need to be utilized. Care should
be taken not to over-stress the pass transistors with excessive power dissipation when
higher fast charge currents are desired.
2.3.2
Reverse-Blocking Protection
The MCP7384X Evaluation Board is designed to provide reverse-blocking protection
in the event a reversed polarity input source is connected. The reverse-blocking
protection diodes also ensure that a faulted or shorted input source will not adversely
effect the battery pack.
2.3.3
Battery Headers
Independent battery connections are provided for each reference design. For the
MCP73841 and MCP73842 reference designs, a connection is provided for a nominal
10 kΩ at 25°C NTC thermistor situated in the battery pack for temperature sensing.
Installed resistors provide a charging window when the cell temperature is between
-5°C and +55°C when a thermistor with a sensitivity index (β) of 3982 is utilized. When
the cell temperature deviates outside the preset window, charging is inhibited. The
desired charging window for a variety of thermistors can be obtained by changing the
values of resistors R4 and R16 or R5 and R17 for circuits 1 and 2, respectively. Refer
to the MCP7384X data sheet (DS21823) for details.
CAUTION: Improper connection of the battery may result in damage to the battery
and the possibility of personal injury. It is also important to avoid
shorting the battery terminals together.
2.3.4
Device Support Options
The MCP7384X Evaluation Board supports the entire MCP7384X family and provides
three reference designs utilizing the MCP73841, MCP73842, and MCP73843.
Alternate devices can be substituted in order to evaluate the different MCP7384X
family options.
2.3.5
Microcontroller option
Connection points provide easily accessible locations for interface to a host
microcontroller. The host microcontroller can be used to disable the charger, monitor
charge status or terminate a charge.
2.3.6
Output voltage options
The MCP7384X Evaluation Board is provided with a constant voltage mode output
voltage of 4.2V and 8.4V for single or dual cell Lithium-Ion/Lithium-Polymer battery
packs, respectively. Evaluation with a constant voltage mode output voltage of 4.1V or
8.2V can be achieved by replacing U1, U2 or U3 with the appropriate device. Refer to
the MCP7384X data sheet (DS21823) for device ordering information.
 2003 Microchip Technology Inc.
DS51424A-page 5
MCP7384X Eval Kit User’s Guide
NOTES:
DS51424A-page 6
 2003 Microchip Technology Inc.
M
MCP7384X EVAL KIT
USER’S GUIDE
Appendix A. Schematic and Layouts
A.1
INTRODUCTION
This appendix contains the schematics and layouts for the MCP7384X Evaluation
Board.
A.2
HIGHLIGHTS
Diagrams included in this appendix:
• Board Schematic
• Board - Top Assembly
• Board - Top Layer
• Board - Bottom Layer
 2003 Microchip Technology Inc.
DS51424A-page 7
MCP7384X Eval Kit User’s Guide
A.3
BOARD SCHEMATIC
D7
J1
Q1
NDS8434
R6
1
J6
VBAT1
1
220m
VDD1
R11
1.5k
R10
1.5k
C2
4.7uF
D4
RED
R2
100k
VBAT1
R7
C6
4.7uF
220m
J3
U1
J5
J4
1
D1
GREEN
EN1
J2
1
2
3
4
5
1
STAT1
R16 7.32k
R4
6.19k
SENSE
VDD
STAT1
EN
THREF
DRV
VBAT
VSS
TIMER
THERM
1
10
9
8
7
6
VSS1
C7
0.1uF
MCP73841/MSOP10
1
VSS1
J7
1
THERM1
D8
J8
Q2
IRLMS6702
R9
1
J13
VBAT2
1
390m
VDD2
R13
1.5k
R12
1.5k
C1
4.7uF
D5
RED
R1
100k
VBAT2
R18
C5
4.7uF
DNP
J10
U2
D2
GREEN
J12
J11
1
1
EN2
J9
1
2
3
4
5
STAT2
R17 7.32k
R5
6.19k
SENSE
VDD
STAT1
EN
THREF
DRV
VBAT
VSS
TIMER
THERM
1
10
9
8
7
6
VSS2
C8
0.33uF
MCP73842/MSOP10
1
VSS2
J14
1
THERM2
D9
J15
J20
R8
1
220m
VDD3
R15
1.5k
R14
1.5k
C3
4.7uF
VBAT3
Q3
IRF6100
D6
RED
R3
100k
1
VBAT3
C4
4.7uF
J17
U3
J19
D3
GREEN
J16
1
1
EN3
J18
1
STAT3
1
2
3
4
SENSE
VDD
STAT1
EN
DRV
VBAT
VSS
TIMER
MCP73843/MSOP8
1
8
7
6
5
VSS3
C9
0.22uF
VSS3
DS51424A-page 8
 2003 Microchip Technology Inc.
A.4
BOARD - TOP ASSEMBLY
 2003 Microchip Technology Inc.
DS51424A-page 9
MCP7384X Eval Kit User’s Guide
A.5
BOARD - TOP LAYER
DS51424A-page 10
 2003 Microchip Technology Inc.
A.6
BOARD - BOTTOM LAYER
 2003 Microchip Technology Inc.
DS51424A-page 11
MCP7384X Eval Kit User’s Guide
NOTES:
DS51424A-page 12
 2003 Microchip Technology Inc.
M
MCP7384X EVAL KIT
USER’S GUIDE
Appendix B. Bill-of-Materials (BOM)
TABLE B-1:
Reference
Designator
BILL OF MATERIALS
Quantity
Description
Manufacturer
Manufacturer
Part Number
C1 - C6
6
4.7 µF, X5R Ceramic, 16V, 1206
Panasonic™
ECJ-3YB1C475K
C7
1
0.1 µF, X7R Ceramic, 16V, 0603
Panasonic
ECJ-1VB1C104K
C8
1
0.33 µF, X5R Ceramic, 16V, 0603
Panasonic
ECJ-1VB1A334K
C9
1
0.22 µF, X5R Ceramic, 16V, 0603
Panasonic
ECJ-1VB1A224K
D1 - D3
3
Green LED, 0603
D4 - D6
3
Red LED, 0603
D7 - D9
3
J1 - J20
20
Lumex™
SML-LX0603GW
Lumex
SML-LX0603SRW
Schottky Diode, 1A, 25V, SOD-323
Panasonic
MA2YD23
Surface Mount Test Point, 5016
Keystone
5016
NDS8434
Q1
1
P-Channel Power MOSFET, SOIC8
Fairchild
Q2
1
P-Channel Power MOSFET, TSOP6
IR
Q2
1
P-Channel Power MOSFET, FlipFET
IR
R1 - R3
3
100 kΩ, 1/16W, Chip Resistor, 0603
Panasonic
IRLMS6702
IRF6100
ERJ-3EKF1003V
R4 - R5
2
6.19 kΩ, 1/16W, Chip Resistor, 0603
Panasonic
ERJ-3EKF6192V
R6 - R8
3
0.22Ω, 1/10W, Chip Resistor, 0603
Panasonic
ERJ-3RQFR22V
R9
3
0.39Ω, 1/10W, Chip Resistor, 0603
Panasonic
ERJ-3RQFR39V
R10 - R15
6
1.5 kΩ, 1/10W, Chip Resistor, 0603
Panasonic
ERJ-3GEYJ152V
Panasonic
ERJ-3EKF7322V
R16 - R17
2
7.32 kΩ, 1/16W, Chip Resistor, 0603
R18 (Note)
0
DNP
U1
1
Single Cell Lithium-Ion Charger, MSOP10
Microchip
Technology Inc.
MCP73841-420I/UN
U2
1
Dual Cell Lithium-Ion Charger, MSOP10
Microchip
Technology Inc.
MCP73842-840I/UN
U3
1
Single Cell Lithium-Ion Charger, MSOP8
Microchip
Technology Inc.
MCP73843-420I/MS
Note:
R18 is not installed in the original factory installation. Pads are provided for a surface-mount chip resistor
in a 0603 package. R18 can be installed in parallel with R9 to adjust the charge current of cicuit 2. Refer
to the schematic and the MCP7384X data sheet (DS21823) for more information on choosing the value of
the sense resistor.
 2003 Microchip Technology Inc.
DS51424A-page 13
M
WORLDWIDE SALES AND SERVICE
AMERICAS
ASIA/PACIFIC
Corporate Office
Australia
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7200
Fax: 480-792-7277
Technical Support: 480-792-7627
Web Address: http://www.microchip.com
Suite 22, 41 Rawson Street
Epping 2121, NSW
Australia
Tel: 61-2-9868-6733
Fax: 61-2-9868-6755
Atlanta
Unit 915
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Tel: 770-640-0034
Fax: 770-640-0307
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China - Beijing
China - Chengdu
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Fax: 86-21-6275-5060
China - Shenzhen
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Irvine, CA 92612
Tel: 949-263-1888
Fax: 949-263-1338
Rm. 1812, 18/F, Building A, United Plaza
No. 5022 Binhe Road, Futian District
Shenzhen 518033, China
Tel: 86-755-82901380
Fax: 86-755-8295-1393
Phoenix
China - Shunde
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7966
Fax: 480-792-4338
Room 401, Hongjian Building
No. 2 Fengxiangnan Road, Ronggui Town
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Tel: 86-765-8395507 Fax: 86-765-8395571
San Jose
China - Qingdao
2107 North First Street, Suite 590
San Jose, CA 95131
Tel: 408-436-7950
Fax: 408-436-7955
Rm. B505A, Fullhope Plaza,
No. 12 Hong Kong Central Rd.
Qingdao 266071, China
Tel: 86-532-5027355 Fax: 86-532-5027205
Toronto
India
6285 Northam Drive, Suite 108
Mississauga, Ontario L4V 1X5, Canada
Tel: 905-673-0699
Fax: 905-673-6509
Divyasree Chambers
1 Floor, Wing A (A3/A4)
No. 11, O’Shaugnessey Road
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Tel: 91-80-2290061 Fax: 91-80-2290062
Japan
Benex S-1 6F
3-18-20, Shinyokohama
Kohoku-Ku, Yokohama-shi
Kanagawa, 222-0033, Japan
Tel: 81-45-471- 6166 Fax: 81-45-471-6122
DS51424A-page 14
Korea
168-1, Youngbo Bldg. 3 Floor
Samsung-Dong, Kangnam-Ku
Seoul, Korea 135-882
Tel: 82-2-554-7200 Fax: 82-2-558-5932 or
82-2-558-5934
Singapore
200 Middle Road
#07-02 Prime Centre
Singapore, 188980
Tel: 65-6334-8870 Fax: 65-6334-8850
Taiwan
Kaohsiung Branch
30F - 1 No. 8
Min Chuan 2nd Road
Kaohsiung 806, Taiwan
Tel: 886-7-536-4818
Fax: 886-7-536-4803
Taiwan
Taiwan Branch
11F-3, No. 207
Tung Hua North Road
Taipei, 105, Taiwan
Tel: 886-2-2717-7175 Fax: 886-2-2545-0139
EUROPE
Austria
Durisolstrasse 2
A-4600 Wels
Austria
Tel: 43-7242-2244-399
Fax: 43-7242-2244-393
Denmark
Regus Business Centre
Lautrup hoj 1-3
Ballerup DK-2750 Denmark
Tel: 45-4420-9895 Fax: 45-4420-9910
France
Parc d’Activite du Moulin de Massy
43 Rue du Saule Trapu
Batiment A - ler Etage
91300 Massy, France
Tel: 33-1-69-53-63-20
Fax: 33-1-69-30-90-79
Germany
Steinheilstrasse 10
D-85737 Ismaning, Germany
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Italy
Via Quasimodo, 12
20025 Legnano (MI)
Milan, Italy
Tel: 39-0331-742611
Fax: 39-0331-466781
Netherlands
P. A. De Biesbosch 14
NL-5152 SC Drunen, Netherlands
Tel: 31-416-690399
Fax: 31-416-690340
United Kingdom
505 Eskdale Road
Winnersh Triangle
Wokingham
Berkshire, England RG41 5TU
Tel: 44-118-921-5869
Fax: 44-118-921-5820
07/28/03
 2003 Microchip Technology Inc.