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| TC650/TC651 Tiny Integrated Temperature Sensor & Brushless DC Fan Controller with Overtemperature Alert Features * Integrated Temperature Sensing and Multi-speed Fan Control * Built-in Overtemperature Alert (TOVER) * Temperature-proportional Fan Speed Control for Acoustic Noise Reduction and Longer Fan Life * Pulse Width Modulation (PWM) Output Drive for Cost and Power Savings * Solid-state Temperature Sensing * 1C (typ.) Accuracy from 25C to +70C * Operating Range: 2.8V - 5.5V * TC651 includes Automatic Fan Shutdown * Low Operating Current: 50 A (typ.) General Description The TC650/TC651 are integrated temperature sensors and brushless DC fan speed controllers. The TC650/ TC651 measure the junction temperature and control the speed of the fan based on that temperature, making them especially suited for applications in modern electronic equipment. Temperature data is converted from the on-chip thermal sensing element and translated into a fractional fan speed from 40% to 100%. A temperature selection guide in the data sheet is used to choose the low and high temperature limits to control the fan. The TC650/TC651 also include a single trip point overtemperature alert (TOVER) that eliminates the need for additional temperature sensors. In addition, the TC651 features an auto fan shutdown function for additional power savings. The TC650/TC651 are easy to use, require no software overhead and are, therefore, the ideal choice for implementing thermal management in a variety of systems. Applications * * * * * * Thermal Protection For Personal Computers Digital Set-Top Boxes Notebook Computers Data Communications Power Supplies Projectors Package Type 8-Pin MSOP VDD 1 NC 2 SHDN 3 GND 4 8 PWM Related Literature * Application Note 771 (DS00771) TC650 TC651 7 GND 6 TOVER 5 NC 2004 Microchip Technology Inc. DS21450C-page 1 TC650/TC651 Typical Application Circuit PICmicro(R) Microcontroller +5V VDD +12V TC650 TC651 1 VDD 2 NC PWM 8 GND 7 TOVER 6 NC 5 GND CSLOW DC Fan 500 mA SHDN Control 3 SHDN 4 GND GND Overtemperature Alert DS21450C-page 2 2004 Microchip Technology Inc. TC650/TC651 1.0 ELECTRICAL CHARACTERISTICS Notice: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Absolute Maximum Ratings Input Voltage (VDD to GND) ................................... +6V Output Voltage (OUT to GND) ................................. 6V Voltage On Any Pin ....... (GND - 0.3V) to (VDD + 0.3V) Operating Temperature Range ......... -40C to +125C Storage Temperature ........................ -65C to +150C DC CHARACTERISTICS Electrical Specifications: Unless otherwise specified, VDD = 2.8V to 5.5V, SHDN = VDD, TA = -40C to +125C. Parameters Supply Voltage Supply Current SHDN Input SHDN Input High Threshold SHDN Input Low Threshold PWM Output PWM Output Low Voltage PWM Output High Voltage PWM Rise Time PWM Fall Time PWM Frequency Start-up Time VOL VOH tR tF fOUT tSTARTUP -- VDD - 0.5 -- -- 10 -- -- -- 10 10 15 32/fOUT 0.3 -- -- -- -- -- V V s s Hz sec VDD Rises from GND or SHDN Released Temperature Accuracy High Temperature Accuracy TH ACC TH - 3 -1.0 -2.5 Auto-shutdown Hysteresis TOVER Output TOVER Output High Voltage TOVER Output Low Voltage Absolute Accuracy Trip Point Hysteresis Note 1: VHIGH VLOW TOVER ACC TOVER HYST VDD - 0.5 -- -- -- -- -- TH + 10 5 -- 0.4 -- -- V V C C ISOURCE = 1.2 mA ISINK = 2.5 mA At Trip Point THYST -- TH -- -- (TH -TL)/5 TH + 3 +1.0 +2.5 -- C C C C Note 1 (TH - TL) 20C (TH - TL) 20C TC651 Only ISINK = 1 mA ISOURCE = 5 mA IOH = 5 mA, 1 nF from PWM to GND IOL = 1 mA, 1 nF from PWM to GND VIH VIL 65 -- -- -- -- 15 %VDD %VDD Sym VDD IDD Min 2.8 -- Typ -- 50 Max 5.5 90 Units V A PWM, TOVER are open Conditions Temperature Range Accuracy (TH -TL) ACC Transition from 90% to 100% Duty Cycle. 2004 Microchip Technology Inc. DS21450C-page 3 TC650/TC651 TEMPERATURE CHARACTERISTICS Electrical Specifications: Unless otherwise noted, VDD = 2.8V to 5.5V, SHDN = VDD, TA = -40C to +125C. Parameters Temperature Ranges Specified Temperature Range Maximum Junction Temperature Storage Temperature Range Package Thermal Resistances Thermal Resistance, 8L-MSOP JA -- 206.3 -- C/W TA TJ TA -40 -- -65 -- -- -- +125 +150 +150 C C C Sym Min Typ Max Units Conditions DS21450C-page 4 2004 Microchip Technology Inc. TC650/TC651 2.0 Note: TYPICAL PERFORMANCE CURVES The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. Note: Unless otherwise indicated, VDD = 2.8V to 5.5V, SHDN = VDD, TA = -40C to +125C. 90 80 VDD = 5.6 3.0 2.5 60 Temp Accuracy (C) 70 2.0 1.5 1.0 0.5 0.0 VDD = 5.6 VDD = 2.7 TL T1 T2 T3 T4 TH IDD (A) 50 40 30 20 10 0 -50 -25 0 25 VDD = 2.7 50 75 100 125 150 TEMPERATURE (C) TTHRESHOLD FIGURE 2-1: IDD vs. Temperature. FIGURE 2-4: VTH. 1.0 0.9 0.8 Temperature Accuracy vs. 500 450 400 VDD - VOH (V) 350 VDD = 2.8V VDD = 5.5V VOL (mV) 0.7 0.6 0.5 0.4 0.3 0.2 300 250 200 150 100 50 0.0 TA = +25C 0 1 2 3 4 5 6 7 8 9 10 VDD = 2.8V VDD = 5.5V 0.1 0.0 TA = +25C 0 2 4 6 8 10 12 14 16 18 20 ISOURCE (mA) ISINK (mA) FIGURE 2-2: 1.0 0.9 0.8 PWM, ISINK vs. VOL. FIGURE 2-5: (VDD - VOH). PWM, ISOURCE vs. VDD = 2.8V VDD - VOH (V) 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0 1 2 3 4 5 6 TA = +25C 7 8 9 10 VDD = 5.5V ISOURCE (mA) FIGURE 2-3: (VDD - VOH). TOVER, ISOURCE vs. 2004 Microchip Technology Inc. DS21450C-page 5 TC650/TC651 3.0 PIN DESCRIPTION The descriptions of the pins are listed in Table 3-1. TABLE 3-1: Pin No. 1 2 3 PIN FUNCTION TABLE Symbol VDD NC SHDN Power Supply Input No Internal Connect Fan Shutdown, Active-low Input 1 = Fan in normal operation 0 = Fan in shutdown Ground No Connect Overtemperature Alert, Active-low Output 1 = Overtemperature condition does not exist 0 = The device is in the overtemperature condition. The fan is driven at 100%. Potential exists for system over-heating Ground PWM Fan Drive Output Description 4 5 6 GND NC TOVER 7 8 GND PWM 3.1 Power Supply Input 3.4 Overtemperature Alert May be independent of fan power supply. Active-low output. 3.2 Fan Shutdown, Active-low Input 3.5 PWM Fan Drive Output During Shutdown mode, the chip still monitors temperature. TOVER is low if temperature rises above factory set point. Pulse width modulated rail-to-rail logic output. Nominal frequency is 15 Hz. 3.3 Ground Ground return for all TC650/TC651 functions. DS21450C-page 6 2004 Microchip Technology Inc. TC650/TC651 4.0 DETAILED DESCRIPTION 4.2 Start-Up Timer The TC650/TC651 acquire and convert their junction temperature (TJ) information from an on-chip, solidstate sensor with a typical accuracy of 1C. The temperature data is digitally stored in an internal register. The register is compared with pre-defined threshold values. The six threshold values are equally distributed over a pre-defined range of temperatures (see Table 41). The TC650/TC651 control the speed of a DC brushless fan using a fractional speed-control scheme. The output stage requires only a 2N2222-type, small-signal BJT for fans up to 300 mA. For larger current fans (up to 1 amp), a logic-level N-channel MOSFET may be used. In addition to controlling the speed of the fan, the TC650/TC651 include an on-chip overtemperature alarm (TOVER) that gives a low signal when the temperature of the chip exceeds TH by 10C (typical). This feature eliminates the need for a separate temperature sensor for overtemperature monitoring. Figure 4-1 shows the block diagram of the device. V+ To ensure reliable fan start-up, the Start-up Timer turns PWM high for about 2 seconds whenever the fan is started from the off state. This occurs at power-up and when coming out of Shutdown mode. 4.3 Overtemperature Alert (TOVER) VDD Temperature Set Point and Trim Range A/D Converter TOVER SHDN This pin goes low when the TH set point is exceeded by 10C (typical). This indicates that the fan is at maximum drive and the potential exists for system overheating; either heat dissipation in the system has gone beyond the cooling system's design limits or some fault exists (such as fan bearing failure or an airflow obstruction). This output may be treated as a "System Overheat" warning and be used to either trigger system shutdown or bring other fans in the system to full speed. The fan will continue to run at full speed while TOVER is asserted. Built-in hysteresis prevents TOVER from "chattering" when the measured temperature is at or near the TH + 10C trip point. As temperature falls through the TH + 10C trip point, hysteresis maintains the TOVER output low until the measured temperature is 5C above the trip point setting. Duty Cycle Logic Control PWM 4.4 Shutdown (SHDN) Oscillator Temperature Sensor The fan can be unconditionally shut down by pulling the SHDN pin low. During shutdown, the PWM output is low; ideal for notebook computers and other portable applications where you need to change batteries and must not have the fan running at that time. Thermal monitoring and TOVER are still in operation during shutdown. IDD shutdown current is around 50 A. FIGURE 4-1: Functional Block Diagram. 4.5 Auto-shutdown Mode 4.1 PWM Output The PWM pin is designed to drive a low-cost transistor or MOSFET as the low-side, power-switching element in the system. This output has an asymmetric complementary drive and is optimized for driving NPN transistors or N-channel MOSFETs. Since the system relies on PWM rather than linear power control, the dissipation in the power switch is kept to a minimum. Generally, very small devices (TO-92 or SOT packages) will suffice. The frequency of the PWM is about 15 Hz. The PWM is also the time base for the Start-up Timer (see Section 4.2 "Start-Up Timer"). The PWM duty cycle has a range of 40% to 100% for the TC650 and 50% to 100% for the TC651. The TC651 features auto-shutdown. When the temperature is below the factory set point at minimum speed (TL), PWM is low and the fan is automatically shut off (Auto-shutdown mode). This feature is ideal for notebook computers and other portable equipment that need to conserve as much battery power as possible and, thus, run a fan when it is only absolutely needed. The TC651 will continue to be active in order to monitor temperature for TOVER. The TC651 exits Autoshutdown mode when the temperature rises above the factory set point (T1). 2004 Microchip Technology Inc. DS21450C-page 7 TC650/TC651 4.6 Temperature Selection Guide (Minimum Fan Speed/Full Speed) Table 4-2 shows the device codes that specify the TH and TL temperature thresholds. The following examples are given to assist in understanding the deviceordering nomenclature. Example 1: Suppose you wanted the fan to run at 40% speed at 25C or less and go to fullspeed at 45C. You would order the part number TC650AEVUA. Example 2: Suppose you wanted the fan to turn on at 30C and go to full speed at 45C. You would order the part number TC651BEVUA. There are two temperature thresholds that determine the characteristics of the device. The minimum fan speed temperature (TL) and the full fan speed temperature (TH). Depending on the TC65X device selected, when the temperature is below the TL trip point, the PWM output will perform a different operation. For the TC650, the PWM will be driven at the minimum PWM frequency, while the TC651 will shut down the PWM (PWM = L). TL and TH can be selected in 5C increments. TL can range from 25C to 35C. TH can range from 35C to 55C and must be 10C (or more) than the specified TL. The five temperature regions defined by the six thresholds are defined in the TC650/TC651 by means of factory trimming. Once a TL and TH are set, the T1 - T4 thresholds are automatically equally spaced between TL and TH. Table 4-1 shows these 5 regions and what the corresponding PWM duty cycle is. TABLE 4-2: DEVICE CODES FOR TEMPERATURE THRESHOLDS TL 25 30 35 TH 35 40 45 40 45 50 45 50 55 55 Threshold Limits Code AC (1) BD (2) CE (2) AD (2) BE (1) CF (2) AE (1) BF (2) CG (1) AG (1) Temp. Threshold Difference 10C TABLE 4-1: TEMPERATURE RANGE DEFINITION PWM Duty Cycle 15C 25 30 35 Temperature (T = TJ) (Note 1) T < TL TL< = T < T1 T1 < = T < T2 T2 < = T TC651 (Auto-shutdown mode) Off 50% 60% 70% 80% 90% 100% 20C 25 30 35 30C Note 1: 2: 25 This temperature threshold option is available for ordering. This is a custom temperature threshold option. Please contact the factory for more information. 100% with Overtemperature Alert (TOVER = L) The temperature regions defined by the six temperature thresholds are predefined in the TC650/TC651 by means of factory trimming. Once a TL and TH are programmed, the T1 - T4 thresholds are automatically equally spaced between TL and TH. DS21450C-page 8 2004 Microchip Technology Inc. TC650/TC651 5.0 5.1 TYPICAL APPLICATIONS Reducing Switching Noise For fans consuming more than 300 mA, a slowdown capacitor (CSLOW) is recommended for reducing switching PWM induced noise (see Figure 5-1). The value of this capacitor should be 4.7 F to 47 F, depending on the fan current consumption. See Application Note 771, "Suppressing Acoustic Noise in PWM Fan Speed Control Systems" (DS00771), for more information. PICmicro(R) Microcontroller +5V VDD +12V TC650 TC651 1 VDD 2 NC PWM 8 GND 7 TOVER 6 NC 5 GND CSLOW DC Fan 500 mA SHDN Control 3 SHDN 4 GND GND Overtemperature Alert FIGURE 5-1: Reducing Switching Noise. 2004 Microchip Technology Inc. DS21450C-page 9 TC650/TC651 6.0 6.1 PACKAGING INFORMATION Package Marking Information 8-Lead MSOP Example: XXXXX YWWNNN 650ACV 406256 Legend: XX...X Y WW NNN Customer specific information* Year code (last digit of calendar year) Week code (week of January 1 is week `01') Alphanumeric traceability code Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line thus limiting the number of available characters for customer specific information. * Standard device marking consists of Microchip part number, year code, week code, and traceability code. DS21450C-page 10 2004 Microchip Technology Inc. TC650/TC651 8-Lead Plastic Micro Small Outline Package (MS) (MSOP) E E1 p D 2 B n 1 A c A1 (F) A2 L 8 Number of Pins .026 BSC Pitch A .043 Overall Height A2 .030 .033 .037 Molded Package Thickness A1 .000 .006 Standoff E .193 TYP. Overall Width E1 .118 BSC Molded Package Width D .118 BSC Overall Length L .016 .024 .031 Foot Length Footprint (Reference) F .037 REF 0 8 Foot Angle c Lead Thickness .003 .006 .009 .009 .012 .016 Lead Width B 5 5 15 Mold Draft Angle Top 5 5 15 Mold Draft Angle Bottom *Controlling Parameter Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010" (0.254mm) per side. Units Dimension Limits n p MIN INCHES NOM MAX MIN MILLIMETERS* NOM 8 0.65 BSC 0.75 0.85 0.00 4.90 BSC 3.00 BSC 3.00 BSC 0.40 0.60 0.95 REF 0 0.08 0.22 5 5 - MAX 1.10 0.95 0.15 0.80 8 0.23 0.40 15 15 JEDEC Equivalent: MO-187 Drawing No. C04-111 2004 Microchip Technology Inc. DS21450C-page 11 TC650/TC651 6.2 Product Tape and Reel Specifications EMBOSSED CARRIER DIMENSIONS Top Cover Tape FIGURE 6-1: A0 W K0 B0 P TABLE 1: Case Outline MS CARRIER TAPE/CAVITY DIMENSIONS Package Type MSOP 8L Carrier Dimensions W mm 12 P mm 8 A0 mm 5.3 Cavity Dimensions B0 mm 3.6 K0 mm 1.4 Output Quantity Units 2500 Reel Diameter in mm 330 FIGURE 1: MSOP DEVICES User Direction of Feed Pin 1 Pin 1 W, Width of Carrier Tape P, Pitch Standard Reel Component Orientation Reverse Reel Component Orientation DS21450C-page 12 2004 Microchip Technology Inc. TC650/TC651 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO. Device XX X XX Examples: a) b) Temp Sensor TL = 25, TH = 35 TC651ACVUATR: Temp Sensor TL = 25, TH = 35 Tape and Reel TC650AEVUA: Temp Sensor TL = 25, TH = 45 TC651AGVUA: Temp Sensor TL = 25, TH = 55 TC650BEVUA: Temp Sensor TL = 30, TH = 45 TC651CGVUA: Temp Sensor TL = 35, TH = 55 TC650CGVUATR: Temp Sensor TL = 35, TH = 55 Tape and Reel TC650ACVUA: Temperature Temperature Package Threshold Range Limit TC650: Temp Sensor & Brushless DC Fan Controller / Overtemperature Alert (minimum speed) TC651: Temp Sensor & Brushless DC Fan Controller / Overtemperature Alert (auto shutdown) TL (1,2) 25 30 35 25 30 35 25 30 35 25 TH (1,3) 35 40 45 40 45 50 45 50 55 55 Device: c) d) e) Temperature Threshold Limit: Temperature Difference 10C Threshold Limit Code AC BD CE AD BE CF AE BF CG AG f) g) 15C 20C 30C 1. TL and TH can be selected in 5C increments. 2. TL can range from 25C to 35C. 3. TH can range from 35C to 55C and must be at least 10C higher than TL. Temperature Range: V = -40C to +125C (Extended) Package: UA = Plastic Micro Small Outline (MSOP), 8-lead UATR = Plastic Micro Small Outline (MSOP), 8-lead (Tape and Reel) Sales and Support Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following: 1. 2. 3. Your local Microchip sales office The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277 The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products. 2004 Microchip Technology Inc. DS21450C-page 13 TC650/TC651 NOTES: DS21450C-page 14 2004 Microchip Technology Inc. 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 patents or other intellectual property rights arising from such use or otherwise. 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 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, 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, Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM, PICkit, PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel and Total Endurance 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) 2004, 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. 2004 Microchip Technology Inc. DS21450C-page 15 WORLDWIDE SALES AND SERVICE AMERICAS Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: 480-792-7627 Web Address: www.microchip.com Atlanta Alpharetta, GA Tel: 770-640-0034 Fax: 770-640-0307 Boston Westford, MA Tel: 978-692-3848 Fax: 978-692-3821 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 ASIA/PACIFIC 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: 86-28-8676-6200 Fax: 86-28-8676-6599 China - Fuzhou Tel: 86-591-750-3506 Fax: 86-591-750-3521 China - Hong Kong SAR Tel: 852-2401-1200 Fax: 852-2401-3431 China - Shanghai Tel: 86-21-6275-5700 Fax: 86-21-6275-5060 China - Shenzhen Tel: 86-755-8290-1380 Fax: 86-755-8295-1393 China - Shunde Tel: 86-757-2839-5507 Fax: 86-757-2839-5571 China - Qingdao Tel: 86-532-502-7355 Fax: 86-532-502-7205 ASIA/PACIFIC India - Bangalore Tel: 91-80-2229-0061 Fax: 91-80-2229-0062 India - New Delhi Tel: 91-11-5160-8632 Fax: 91-11-5160-8632 Japan - Kanagawa Tel: 81-45-471- 6166 Fax: 81-45-471-6122 Korea - Seoul Tel: 82-2-554-7200 Fax: 82-2-558-5932 or 82-2-558-5934 Singapore Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan - Kaohsiung Tel: 886-7-536-4816 Fax: 886-7-536-4817 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Taiwan - Hsinchu Tel: 886-3-572-9526 Fax: 886-3-572-6459 EUROPE Austria - Weis Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Ballerup Tel: 45-4420-9895 Fax: 45-4420-9910 France - Massy Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79 Germany - Ismaning Tel: 49-89-627-144-0 Fax: 49-89-627-144-44 Italy - Milan Tel: 39-0331-742611 Fax: 39-0331-466781 Netherlands - Drunen Tel: 31-416-690399 Fax: 31-416-690340 England - Berkshire Tel: 44-118-921-5869 Fax: 44-118-921-5820 08/24/04 DS21450C-page 16 2004 Microchip Technology Inc. |
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