MCP73871
Evaluation Board
User’s Guide
© 2008 Microchip Technology Inc.
DS51755A
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and may be superseded by updates.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
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
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, Accuron,
dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,
PICSTART, rfPIC and SmartShunt are registered trademarks
of Microchip Technology Incorporated in the U.S.A. and other
countries.
FilterLab, Linear Active Thermistor, 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, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, In-Circuit Serial
Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, PICkit, PICDEM,
PICDEM.net, PICtail, PIC32 logo, PowerCal, PowerInfo,
PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, 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.
© 2008, 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 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.
DS51755A-page ii
© 2008 Microchip Technology Inc.
MCP73871 EVALUATION 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
1.1 Introduction ..................................................................................................... 5
1.2 What is the MCP73871 Evaluation Board? .................................................... 6
1.3 What the MCP73871 Evaluation Board Kit includes ...................................... 6
Chapter 2. Installation and Operation
2.1 Introduction ..................................................................................................... 7
2.2 Features ......................................................................................................... 7
2.3 Getting Started ............................................................................................... 8
Appendix A. Schematic and Layouts
A.1 Introduction .................................................................................................. 11
A.2 Board – Schematic ....................................................................................... 12
A.3 Board – Top Layer ....................................................................................... 13
A.4 Board – Top Metal Layer ............................................................................. 13
A.5 Board – Bottom Layer ................................................................................. 14
Appendix B. Bill Of Materials (BOM)
Worldwide Sales and Service .................................................................................... 16
© 2008 Microchip Technology Inc.
DS51755A-page iii
MCP73871 Evaluation Board User’s Guide
NOTES:
DS51755A-page iv
© 2008 Microchip Technology Inc.
MCP73871 EVALUATION 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
MCP73871 Evaluation Board User’s Guide. 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 MCP73871 Evaluation Board User’s Guide as
a development tool to emulate and debug firmware on a target board. The manual layout is as follows:
• Chapter 1. “Product Overview” – Important information about the MCP73871
Evaluation Board User’s Guide.
• Chapter 2. “Installation and Operation” – Includes instructions on how to get
started with this user’s guide and a description of the user’s guide.
• Appendix A. “Schematic and Layouts” – Shows the schematic and layout
diagrams for the MCP73871 Evaluation Board User’s Guide.
• Appendix B. “Bill Of Materials (BOM)” – Lists the parts used to build the
MCP73871 Evaluation Board User’s Guide.
© 2008 Microchip Technology Inc.
DS51755A-page 1
MCP73871 Evaluation Board User’s Guide
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Arial font:
Italic characters
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: { | }
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
File>Save
Press <Enter>, <F1>
var_name [,
var_name...]
void main (void)
{ ...
}
RECOMMENDED READING
This user's guide describes how to use MCP73871 Evaluation Board User’s Guide.
The following Microchip documents are available and recommended as supplemental
reference resources.
MCP73871 Data Sheet, “Stand-Alone Linear Li-Ion / Li-Poly Battery Charge and
System Load Sharing Management Controller”, DS22090
This data sheet provides detailed information regarding the MCP73871 product family.
DS51755A-page 2
© 2008 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
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 (August 2008)
• Initial Release of this Document.
© 2008 Microchip Technology Inc.
DS51755A-page 3
MCP73871 Evaluation Board User’s Guide
NOTES:
DS51755A-page 4
© 2008 Microchip Technology Inc.
MCP73871 EVALUATION BOARD
USER’S GUIDE
Chapter 1. Product Overview
1.1
INTRODUCTION
Space and complexity are two key concerns in portable electronic design. The highly
integrated MCP73871 device has overcome the hurdles by including the required elements to meet the design challenges when developing new Li-Ion / Li-Polymer battery
powered products.
The MCP73871 requires minimum external components to power the system load and
charge single cell Li-Ion batteries independently. When input power is absent or
insufficient, the Li-Ion battery becomes the primary power source or in help mode to
support the required system load current. The MCP73871 Evaluation Board is
developed to assist product designers in reducing product design cycle and time by
utilizing Microchip’s favorite stand-alone Li-Ion battery charger and system load
sharing management controller.
This chapter provides an overview of the MCP73871 Evaluation Boardand covers the
following topics:
• “What is the MCP73871 Evaluation Board?”
• “What the MCP73871 Evaluation Board Kit includes”
MCP73871 Typical Application
Ac-dc Adapter
or
USB Port
18, 19
10 µF
2
470Ω
470Ω
470Ω
6
IN
1, 20
System
Load
4.7 µF
VPCC
VBAT 14, 15, 16
4.7 µF
PG
7 STAT2
8
OUT
THERM 5
NTC
10 kΩ
STAT1
LBO
PROG1
13
RPROG1
Single-Cell
Li-Ion Battery
3
Low
SEL
Hi
4
Low
Hi
9
Low
Low
FIGURE 1-1:
Hi
17
Hi
PROG2
PROG3
12 RPROG3
TE
CE
VSS 10, 11, EP
MCP73871 With System Power Path Management Application.
© 2008 Microchip Technology Inc.
DS51755A-page 5
MCP73871 Evaluation Board User’s Guide
1.2
WHAT IS THE MCP73871 EVALUATION BOARD?
The MCP73871 Evaluation Board demonstrates the features of Microchip’s MCP73871
“Stand-alone Linear Li-Ion / Li-Poly Battery Charge and System Load Sharing Management Controller”.
The MCP73871 Evaluation Board is designed to deliver minimum 1.5A total current to
system load and to a single cell Li-Ion battery at 4.2V preset voltage regulation. (4.1V,
4.35V and 4.4V options are also available for MCP73871) The MCP73871 Evaluation
Board has two dip switches to control input current limits. First dip switch (SW2)
determines input power source between ac-dc adapter and USB port (AC/USB).
Second dip switch (SW1) determines 500 mA high power USB port or 100 mA low
power USB port (High/Low). The input current limit is governed by USB specification
when selecting USB on SW2.
The maximum fast current when AC is selected on SW2 is programmed by resistor
(RPROG1) at 1A and termination current is set at 100 mA by (RPROG3).
The MCP73871 Evaluation Board offers three status LED for two charge status outputs
and a power good indicator.
Note:
Please refer to Table 2-1 for charge status outputs and Figure 2-1 for
charge current setups.
The MCP73871 Evaluation Board comes with factory preset low battery indicator
(LBO) when input is absent. The preset value is 3.1V and STAT1 LED turns on when
battery voltage is below the threshold voltage.
The MCP73871 Evaluation Board is designed to observe the performance and features
on the circuits via multiple test points. Circuits can also be implemented into suitable
applications without additional work.
Note:
1.3
For evaluation LBO purpose, connect a DC power supply and set VDD
below UVLO. The LBO lights up when VBAT drops below threshold voltage.
WHAT THE MCP73871 EVALUATION BOARD KIT INCLUDES
This MCP73871 Evaluation Board kit includes:
• MCP73871 Evaluation Board, 102-00183
• Analog and Interface Products Demonstration Boards CD-ROM (DS21912)
- MCP73871 Evaluation Board User’s Guide User’s Guide (DS51755)
- MCP73871 Data Sheet, “Stand-Alone Linear Li-Ion / Li-Poly Battery Charge
and System Load Sharing Management Controller” (DS22090)
DS51755A-page 6
© 2008 Microchip Technology Inc.
MCP73871 EVALUATION BOARD
USER’S GUIDE
Chapter 2. Installation and Operation
2.1
INTRODUCTION
The MCP73871 Evaluation Board demonstrates Microchip's stand-alone linear Li-Ion
battery charger with system power path and load sharing management control solution.
The system load is also supported by the Li-Ion battery when the input power is
disconnected. A number of device options allow the MCP73871 to be utilized in a
variety of applications. Refer to the MCP73871 Data Sheet (DS22090) and/or contact
local Microchip supports for additional device options.
Typical applications for the reference design are Smart Phones, PDA, Portable Media
Players, MP3 Players, Digital Cameras, Handheld Medical devices, Bluetooth headsets, Ultra-Mobile PC and Portable Communicators.
2.2
FEATURES
The MCP73871 Evaluation Board has the following features:
• Integrated System Load Sharing
• Input Current Limit Control with dip switches between ac-dc adapter (Typical
1650 mA), USB-High (Maximum 500 mA) and USB-Low (Maximum 100 mA)
• Three LED indicates charge status, low battery and power good signal
• Preset Li-Ion battery charge voltage: 4.2V ±0.5%
• Temperature monitoring is disabled by default, but can be enabled to use with
NTC thermister
• Factory preset 0.1C preconditioning current of deeply depleted cells
• Factory preset 6 hour Safety Timer with Timer Enable feature
• Constant Current / Constant Voltage (CC/CV) charge algorithm
• Resistor programmed maximum charge current: 1A
• Resistor programmed termination set point: 100 mA
• Automatic Charge Termination
• Automatic Recharge
• Internal Thermal Regulation
• Exposed Pad with extra via underneath for better heat dissipations
© 2008 Microchip Technology Inc.
DS51755A-page 7
MCP73871 Evaluation Board User’s Guide
2.3
GETTING STARTED
The MCP73871 Evaluation Board is fully assembled and tested for charging a
single-cell Li-Ion or Li-Polymer battery with or without system load.
2.3.1
Power Input and Output Connection
2.3.1.1
POWERING THE MCP73871 EVALUATION BOARD
1. Connect the positive battery terminal to VBAT+ (TP4) and negative battery
terminal to VSS (TP1 or TP5).
2. Connect the 5V - 6V DC power supply Negative Terminal to VSS (TP1 or TP5).
3. Connect the 5V - 6V DC power supply Positive Terminal to VDD (TP2).
4. Connected positive of load to OUT (TP3) on the board and negative of load to
either VSS (TP1 or TP5). The system load can be a power resistor or E-Load.
5. The maximum current that system load requires should not violate the specification of Li-Ion battery manufacturer (Typical at 1C or less) or 1A for safety and
performance concerns.
6. It should initiate the battery charging cycle when drive CE (TP6) high. Drive CE
(TP6) low disables the Li-Ion battery charger function.
7. Position the DIP Switch #2 (SW2) to “AC” allows maximum input current of 1.8A
to support both system load and Li-Ion battery charger at 1000 mA fast charge
current rate.
8. Position the DIP Switch #2 (SW2) to “USB” limits the input current to meet USB
specifications.
9. When DIP Switch #2 (SW2) is positioned at USB; position the DIP Switch #1
(SW1) to “High” limits total input current to 500 mA and “Low” for maximum input
current at 100 mA.
Note:
Fast Charge Current and Termination Current can be easily programmed
with various resistors that based on the Figure 2-1.
The Li-Ion battery pack can be replaced with test circuit or electronic load
that can sink current with DC power supply. Please refer to Figure 2-2.
10. Remove DC power supply, the load should be supported by the Li-Ion battery
now.
DS51755A-page 8
© 2008 Microchip Technology Inc.
Installation and Operation
Charge Current (mA)
1000
900
800
700
600
500
400
300
200
100
0
1
1
3
5
7
9
11
13
15
17
19
Programming Resistor (kΩ)
FIGURE 2-1:
(RPROG).
0V-6V
Power
Source
MCP73833 Charge Current (IOUT) vs. Programming Resistor
Amp
Meter
Diode
Volt
Meter
R
5ȍ
10W
GND
FIGURE 2-2:
© 2008 Microchip Technology Inc.
VBAT+
1000 ȝF
Microchip
Battery
Charge
Management
Controller
VBAT-
Simulated Battery Load.
DS51755A-page 9
MCP73871 Evaluation Board User’s Guide
FIGURE 2-3:
TABLE 2-1:
MCP73871 Board Layout and Dimensions.
MCP73871 CHARGE STATUS OUTPUTS
CHARGE CYCLE STATE
DS51755A-page 10
STAT1 (Green)
STAT2 (Red)
PG (Blue)
Shutdown
OFF
OFF
OFF
Standby
OFF
OFF
ON
Charge in Progress
ON
OFF
ON
Charge Complete (EOC)
OFF
ON
ON
Temperature Fault
ON
ON
ON
Timer Fault
ON
ON
ON
Low Battery Indicator (LBO)
ON
OFF
OFF
No Battery Present
OFF
OFF
ON
No Input Power
OFF
OFF
OFF
© 2008 Microchip Technology Inc.
MCP73871 EVALUATION BOARD
USER’S GUIDE
Appendix A. Schematic and Layouts
A.1
INTRODUCTION
This appendix contains the following schematics and layouts for the MCP73871
Evaluation Board:
•
•
•
•
Board – Schematic Sheet
Board – Top Layer
Board – Top Metal Layer
Board – Bottom Layer
© 2008 Microchip Technology Inc.
DS51755A-page 11
MCP73871 Evaluation Board User’s Guide
BOARD – SCHEMATIC
M
A.2
DS51755A-page 12
© 2008 Microchip Technology Inc.
Schematic and Layouts
A.3
BOARD – TOP LAYER
A.4
BOARD – TOP METAL LAYER
© 2008 Microchip Technology Inc.
DS51755A-page 13
MCP73871 Evaluation Board User’s Guide
A.5
BOARD – BOTTOM LAYER
DS51755A-page 14
© 2008 Microchip Technology Inc.
MCP73871 EVALUATION BOARD
USER’S GUIDE
Appendix B. Bill Of Materials (BOM)
TABLE B-1:
Qty
BILL OF MATERIALS (BOM)
Reference
Description
Manufacturer
Part Number
4
Bump
BUMPON HEMISPHERE 0.44 X 0.20 3M
WHITE
SJ5003-9-ND
3
C1, C2, C3
CAP CERAMIC 4.7 μF 10 X5R 0603
Taiyo Yuden®
LMK107BJ475KA-T
1
LED1
True Green Water Clear 0603 SMD
LED
Para Light USA
L-C191LGCT-U1
1
LED2
Super Red Water Clear 0603 SMD
LED
Para Light USA
L-C191KRCT-U1
1
LED3
Blue Water Clear 0603 SMD LED
Para Light USA
L-C191LBCT-U1
1
PCB
Printed Circuit Board
Microchip Technology Inc. 104-00183-R1
4
R1, R3, R4, R5
RES 1K OHM 1/10W 1% 0603 SMD
Panasonic® - ECG
ERJ-3EKF1001V
2
R2, R6
RES 10K OHM 1/10W 1% 0603 SMD
Panasonic - ECG
ERJ-3EKF1002V
2
SW1, SW2
SWITCH SLIDE SPDT SMD J-LEAD
Copal Electronics Inc
CJS-1200TA
6
TP1, TP2, TP3,
TP4, TP5, TP6
PC Test Point Compact SMT
Keystone Electronics®
5016
1
U1
Stand-Alone System Load Sharing
Microchip Technology, Inc MCP73871-2CCI/ML
and Li-Ion / Li-Polymer Battery Charge
Management Controller; 4.2V Charge
Voltage Regulation Option
Note:
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.
© 2008 Microchip Technology Inc.
DS51755A-page 15
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
Harbour City, Kowloon
Hong Kong
Tel: 852-2401-1200
Fax: 852-2401-3431
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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
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Tel: 91-20-2566-1512
Fax: 91-20-2566-1513
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Fax: 49-89-627-144-44
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Tel: 678-957-9614
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Fax: 774-760-0088
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Fax: 630-285-0075
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Fax: 408-961-6445
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Canada
Tel: 905-673-0699
Fax: 905-673-6509
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Tel: 61-2-9868-6733
Fax: 61-2-9868-6755
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Fax: 82-53-744-4302
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Korea - Seoul
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Fax: 82-2-558-5932 or
82-2-558-5934
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Tel: 60-4-227-8870
Fax: 60-4-227-4068
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Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
China - Shenzhen
Tel: 86-755-8203-2660
Fax: 86-755-8203-1760
Taiwan - Hsin Chu
Tel: 886-3-572-9526
Fax: 886-3-572-6459
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Taiwan - Kaohsiung
Tel: 886-7-536-4818
Fax: 886-7-536-4803
China - Xiamen
Tel: 86-592-2388138
Fax: 86-592-2388130
Taiwan - Taipei
Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
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 - Zhuhai
Tel: 86-756-3210040
Fax: 86-756-3210049
01/02/08
DS51755A-page 16
© 2008 Microchip Technology Inc.