MCP73831 Evaluation Board User's Guide (c) 2005 Microchip Technology Inc. DS51596A 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in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates.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's products as critical components in life support systems is not authorized except with express written approval by Microchip. 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, 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, PICMASTER, 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, dsPICDEM, dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, Linear Active Thermistor, MPASM, MPLIB, MPLINK, MPSIM, 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. (c) 2005, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received ISO/TS-16949:2002 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona and Mountain View, California in October 2003. The Company's quality system processes and procedures are for its PICmicro(R) 8-bit MCUs, KEELOQ(R) 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. DS51596A-page ii (c) 2005 Microchip Technology Inc. MCP73831 EVALUATION 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 ................................................................................................. 4 Document Revision History ................................................................................... 4 Chapter 1. Product Overview 1.1 Introduction ..................................................................................................... 5 1.2 What is the MCP73831 Evaluation Board? .................................................... 6 1.3 What the MCP73831 Evaluation 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 Appendix B. Bill Of Materials (BOM) Worldwide Sales and Service .................................................................................... 18 (c) 2005 Microchip Technology Inc. DS51596A-page iii MCP73831 Evaluation Board User's Guide NOTES: DS51596A-page iv (c) 2005 Microchip Technology Inc. MCP73831 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. INTRODUCTION This chapter contains general information that will be useful to know before using the MCP73831 Evaluation 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 MCP73831 Evaluation Board. The manual layout is as follows: * Chapter 1. "Product Overview" - Important information about the MCP73831 Evaluation Board. * Chapter 2. "Installation and Operation" - Includes instructions on how to get started with this evaluation kit and a description of the evaluation boards. * Appendix A. "Schematic and Layouts" - Shows the schematic and layout diagrams for the MCP73831 Evaluation Board. * Appendix B. "Bill Of Materials (BOM)" - Lists the parts used to build the MCP73831 Evaluation Board. (c) 2005 Microchip Technology Inc. DS51596A-page 1 MCP73831 Evaluation 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 Referenced books Emphasized text A window A dialog A menu selection A field name in a window or dialog A menu path MPLAB(R) 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 Represents code supplied by user DS51596A-page 2 Examples 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} var_name [, var_name...] void main (void) { ... } (c) 2005 Microchip Technology Inc. Preface RECOMMENDED READING This user's guide describes how to use the MCP73831 Evaluation Board. The following Microchip documents are available and recommended as supplemental reference resources. MCP73831 Data Sheet, "Miniature Single-Cell, Fully-Integrated Li-Ion, Li-Polymer Charge-Management Controller", (DS21984) This data sheet provides detailed information regarding the MCP73831 product family. AN947, "Power Management in Portable Applications: Charging Lithium-Ion/Lithium-Polymer Batteries", (DS00947) This application note provides general information regarding charging Li-Ion batteries. AN971, "USB Port-Powered Li-Ion/Li-Polymer Battery Charging", (DS00971) This application note provides general information regarding charging Li-Ion batteries from a USB port. 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 (c) 2005 Microchip Technology Inc. DS51596A-page 3 MCP73831 Evaluation Board User's Guide 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 (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 (December 2005) * Initial Release of this Document. DS51596A-page 4 (c) 2005 Microchip Technology Inc. MCP73831 EVALUATION BOARD USER'S GUIDE Chapter 1. Product Overview 1.1 INTRODUCTION The MCP73831 Evaluation Board is used to evaluate Microchip's MCP73831 in simple, stand-alone Li-Ion battery charging applications. Two circuit boards are provided in the MCP73831 Evaluation Kit for evaluation of various device options. This chapter covers the following topics: * What is the MCP73831 Evaluation Board? * What the MCP73831 Evaluation Kit Includes 500 mA Li-Ion Battery Charger 4 VIN VBAT VDD 1 F 3 1 F PROG + Single Li-Ion - Cell 5 2 k 470 1 STAT VSS 2 MCP73831 FIGURE 1-1: (c) 2005 Microchip Technology Inc. Typical MCP73831 Application. DS51596A-page 5 MCP73831 Evaluation Board User's Guide 1.2 WHAT IS THE MCP73831 EVALUATION BOARD? The MCP73831 Evaluation Board is an evaluation and demonstration tool for Microchip's MCP73831 miniature single-cell, fully-integrated Li-Ion, Li-Polymer charge-management controllers. Two evaluation boards are provided in the MCP73831 Evaluation Kit. The boards are set up to evaluate simple, stand-alone, linear charging of single-cell Li-Ion / Li-Polymer battery packs (the battery packs are not included). Each board design provides constant current charging followed by constant voltage charging with automatic charge termination. In addition, the MCP73831-2AC board provides preconditioning of deeply depleted cells. Each board design provides evaluation of the MCP73831 in two package options: a SOT23-5 and a 2 mm x 3 mm, 8-Lead DFN for higher power handling capability. When connected, these evaluation boards allow for the evaluation of the MCP73831 devices in a variety of applications. 1.3 WHAT THE MCP73831 EVALUATION KIT INCLUDES This MCP73831 Evaluation Kit includes: * Two MCP73831 Evaluation Boards, 102-00085 * MCP73831 Evaluation Board User's Guide, DS51596 * MCP73831 Data Sheet, "Miniature Single-Cell, Fully-Integrated Li-Ion, Li-Polymer Charge-Management Controller", DS21984 * AN947, "Power Management in Portable Applications: Charging Lithium-Ion/Lithium-Polymer Batteries", DS00947 * AN971, "USB Port-Powered Li-Ion/Li-Polymer Battery Charging", DS00971 DS51596A-page 6 (c) 2005 Microchip Technology Inc. MCP73831 EVALUATION BOARD USER'S GUIDE Chapter 2. Installation and Operation 2.1 INTRODUCTION The MCP73831 Evaluation Board demonstrates Microchip's MCP73831. The MCP73831 is a miniature single-cell, fully-integrated Li-Ion/Li-Polymer charge-management controller. A number of device options allow the MCP73831 to be utilized in a variety of applications. Refer to the MCP73831 data sheet (DS21984) for device options. 2.2 FEATURES The MCP73831 Evaluation Kit contains two boards for evaluation of various device options. The boards have the following features with the factory installed devices: * Charge Voltage: 4.20V * Programmable Fast Charge Current up to 500 mA * Preconditioning of deeply depleted cells (MCP73831-2AC) - Preconditioning Threshold Voltage: 2.8V - Preconditioning Current: 10% of Programmed Fast Charge Current * No Preconditioning (MCP73831-2DC) * Automatic Charge Termination - Charge termination by minimum current in Constant Voltage Mode - Termination Current: 7.5% of Programmed Fast Charge Current * Automatic Recharge - Recharge Threshold Voltage: 4.05V * Charge Current Monitor for Fuel Gauging * Thermal Regulation * Reverse Discharge Protection * Evaluation in SOT23-5 Package * Evaluation in 2 mm x 3 mm, 8-Lead DFN package for higher power handling capability * Simple Stand-Alone Operation * Powered from external bench supply or voltage regulated wall cube * Surface-Mount Design * Fully Assembled and Tested (c) 2005 Microchip Technology Inc. DS51596A-page 7 MCP73831 Evaluation Board User's Guide 2.3 GETTING STARTED The MCP73831 Evaluation Boards are fully assembled and tested for charging single-cell, Li-Ion/Li-Polymer battery packs. The boards provide the appropriate charge algorithm for simple, stand-alone operation. The boards require the use of an external input voltage source (5V 10%, recommended) and external load (battery pack or simulated battery load). 2.3.1 Power Input and Output Connections 2.3.1.1 POWERING A MCP73831 EVALUATION BOARD 1. Apply the input voltage source to the appropriate circuit for evaluation. The input voltage source should be limited to the 0V to +6V range. For normal operation, the input voltage should be between +4.5V and +6V. The input voltage must not exceed an absolute maximum of +7V. 2. Connect the positive side of the input source (+) to VDD of the circuit being evaluated. Connect the negative or return side of the input source (-) to VSS of the circuit being evaluated. Refer to Figure 2-1. + + FIGURE 2-1: 2.3.1.2 _ Input _ Battery Pack or Simulated Battery Load Power Supply 5.2V Setup Configuration Diagram. APPLYING THE LOAD TO A MCP73831 EVALUATION BOARD 1. To apply a load to a MCP73831 Evaluation Board, the positive side of the load (B+) should be connected to VBAT of the circuit being evaluated. The negative or return side of the load (B-) should be connected to VSS of the circuit being evaluated. Care should be taken when using electronic loads or ground referenced loads. 2. For the MCP73831-2AC board, the charge management controller will only provide 10% of the programmed fast charge current if the battery terminal voltage (VBAT) is less than 2.8V with respect to VSS. Using a purely resistive load will not work for preconditioning and fast charge currents. The best way to evaluate the charge management circuit is to use a single-cell Li-Ion battery pack, or the recommended simulated battery load. Refer to Figure 2-2. DS51596A-page 8 (c) 2005 Microchip Technology Inc. Installation and Operation B+ + 1,000 F 10V Al + Variable Power Supply _ 0V - 6V 5 2W BFIGURE 2-2: 2.3.1.3 Simulated Battery Load. SETTING THE FAST CHARGE CURRENT 1. As provided, the MCP73831 Evaluation Boards have two fast charge current settings: 100 mA and 500 mA. The default fast charge current setting is 100 mA. By jumpering PROG to VSS of the circuit being evaluated, the fast charge current is set to 500 mA. 2. Alternatively, the appropriate programming resistor can be changed in the hardware to obtain the desired fast charge current setting. Resistor R3 should be changed for the SOT23 circuit, and resistor R8 should be changed for the DFN circuit. Refer to the MCP73831 data sheet for choosing the appropriate value programming resistor for the desired fast charge current. 2.3.1.4 STATUS INDICATORS 1. The MCP73831 Evaluation Boards have two LED status indicators for each circuit being evaluated. Table 2-1 represents the state of the status indicators during various states of the charge cycle. ON indicates that the respective LED is illuminated. TABLE 2-1: STATUS INDICATORS Charge Cycle State Red LED Green LED Qualification ON ON Preconditioning ON OFF Constant Current Fast Charge ON OFF Constant Voltage ON OFF Charge Complete OFF ON Battery Disconnected ON ON Input Voltage Source Removed OFF OFF Input Voltage Source Below UVLO ON ON Shutdown ON ON 2.3.1.5 CHARGE CURRENT MONITOR 1. The MCP73831 Evaluation Boards have a charge current monitor for each circuit being evaluated. The charge current monitor can be used as a coulomb counter for fuel gauging. The charge current is equivalent to the voltage at CHARGE MONITOR with respect to VSS divided by the value of the programming resistor in kilo-ohms. For example, the default programming resistor is 10 k. If the measured voltage at CHARGE MONITOR is 1V, the charge current is equal to 1 divided 10, or 100 mA. If the measured voltage at CHARGE MONITOR is 100 mV, the charge current is 0.1 divided by 10, or 10 mA. (c) 2005 Microchip Technology Inc. DS51596A-page 9 MCP73831 Evaluation Board User's Guide 2.3.1.6 DEVICE SUPPORT OPTIONS 1. The MCP73831 Evaluation Boards are capable of supporting all of the available MCP73831 device options. The factory installed devices are the MCP73831-2AC and the MCP73831-2DC. Refer to the MCP73831 data sheet for available device options and details regarding the installed device options. DS51596A-page 10 (c) 2005 Microchip Technology Inc. MCP73831 EVALUATION BOARD USER'S GUIDE Appendix A. Schematic and Layouts A.1 INTRODUCTION This appendix contains the following schematic and layouts for the MCP73831 Evaluation Boards. Diagrams included in this appendix: * * * * * Board Schematic Board - Assembly Drawing Board - Top Overlay Board - Top Layer Board - Bottom Layer (c) 2005 Microchip Technology Inc. DS51596A-page 11 FIGURE A-1: DS51596A-page 12 K A K A A K A K MCP73831 Evaluation Board User's Guide Board Schematic. (c) 2005 Microchip Technology Inc. FIGURE A-2: TP12 TP11 C6 U2 C5 21 TP9 TP10 D4 D3 R10 R9 R8 R7 C4 R6 C2 U1 C1 TP7 TP8 TP4 TP5 C3 TP3 TP2 TP1 R1 D1 D2 R2 R3 R4 R5 TP6 Schematic and Layouts Board - Assembly Drawing. (c) 2005 Microchip Technology Inc. DS51596A-page 13 MCP73831 Evaluation Board User's Guide TP1 TP6 R1 D2 R3 R5 TP2 TP5 D1 R2 R4 C3 TP3 TP4 C1 U1 C2 TP7 TP10 C4 TP8 R7 R6 R9 R8 D4 D3 R10 TP9 TP12 C5 FIGURE A-3: DS51596A-page 14 TP11 U2 C6 Board - Top Overlay. (c) 2005 Microchip Technology Inc. Schematic and Layouts FIGURE A-4: Board - Top Layer. (c) 2005 Microchip Technology Inc. DS51596A-page 15 MCP73831 Evaluation Board User's Guide FIGURE A-5: DS51596A-page 16 Board - Bottom Layer. (c) 2005 Microchip Technology Inc. MCP73831 EVALUATION BOARD USER'S GUIDE Appendix B. Bill Of Materials (BOM) TABLE B-1: Qty. BILL OF MATERIALS (BOM) Reference Description 4 2 2 2 4 2 2 2 12 1 C1,C2,C5,C6 C3,C4 D1,D4 D2,D3 R1,R2,R9,R10 R3,R8 R4,R7 R5,R6 TP1-TP12 U1 4.7uF, X5R Ceramic, 10V, 0805 0.1uF, X7R Ceramic, 16V, 0603 Super Red LED, 0603 Green LED, 0603 221, 1/10W, Chip Resistor, 0603 10.0k, 1/10W, Chip Resistor, 0603 2.49k, 1/10W, Chip Resistor, 0603 100k, 1/10W, Chip Resistor, 0603 Surface Mount Test Point, 5016 Miniature Li-Ion Charger, SOT23-5 1 U2 Miniature Li-Ion Charger, 2X3DFN8 4 1 Note 1: Bump-ons Printed Circuit Board Installed device option is indicated on board. (c) 2005 Microchip Technology Inc. Mfgr. Panasonic(R)-ECG Panasonic-ECG Lumex Lumex Panasonic-ECG Panasonic-ECG Panasonic-ECG Panasonic-ECG Keystone Microchip Technology Inc. Microchip Technology Inc. 3M Advanced Circuits Part Number ECJ-GVB1A475M ECJ-1VB1C104K LTST-C190KRKT LTST-C190KGKT ERJ-3EK2210V ERJ-3EK1002V ERJ-3EK2491V ERJ-3EK1003V 5016 MCP73831-2ACI/OT MCP73831-2DCI/OT (1) MCP73831-2ACI/MC MCP73831-2DCI/MC (1) SJ5003 104-00085-R1 DS51596A-page 17 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 Australia - Sydney Tel: 61-2-9868-6733 Fax: 61-2-9868-6755 India - Bangalore Tel: 91-80-2229-0061 Fax: 91-80-2229-0062 China - Beijing Tel: 86-10-8528-2100 Fax: 86-10-8528-2104 India - New Delhi Tel: 91-11-5160-8631 Fax: 91-11-5160-8632 Austria - Wels Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 China - Chengdu Tel: 86-28-8676-6200 Fax: 86-28-8676-6599 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 China - Fuzhou Tel: 86-591-8750-3506 Fax: 86-591-8750-3521 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 China - Hong Kong SAR Tel: 852-2401-1200 Fax: 852-2401-3431 Korea - Gumi Tel: 82-54-473-4301 Fax: 82-54-473-4302 China - Qingdao Tel: 86-532-8502-7355 Fax: 86-532-8502-7205 Korea - Seoul Tel: 82-2-554-7200 Fax: 82-2-558-5932 or 82-2-558-5934 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 San Jose Mountain View, CA Tel: 650-215-1444 Fax: 650-961-0286 Toronto Mississauga, Ontario, Canada Tel: 905-673-0699 Fax: 905-673-6509 China - Shanghai Tel: 86-21-5407-5533 Fax: 86-21-5407-5066 China - Shenyang Tel: 86-24-2334-2829 Fax: 86-24-2334-2393 China - Shenzhen Tel: 86-755-8203-2660 Fax: 86-755-8203-1760 China - Shunde Tel: 86-757-2839-5507 Fax: 86-757-2839-5571 China - Wuhan Tel: 86-27-5980-5300 Fax: 86-27-5980-5118 China - Xian Tel: 86-29-8833-7250 Fax: 86-29-8833-7256 Malaysia - Penang Tel: 60-4-646-8870 Fax: 60-4-646-5086 Philippines - Manila Tel: 63-2-634-9065 Fax: 63-2-634-9069 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 Singapore Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan - Hsin Chu Tel: 886-3-572-9526 Fax: 886-3-572-6459 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 10/31/05 DS51596A-page 18 (c) 2005 Microchip Technology Inc. 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