2002 Microchip Technology Inc. DS21462B-page 1
TC74
Features
• Digital Temperature Sensing in SOT-23-5 Package
• Outputs Temperature as an 8-Bit Digital Word
• Simple Serial Port Interface
• Solid-State Temperature Sensing:
- ±2°C Accuracy from +25°C to +85°C
- ±3°C Accuracy from 0°C to +125°C
• 3.0 and 5.5V Operating Range
•LowPower:
- 200µA Operating
-5µA Standby Mode
Applications
• Thermal Protection for Hard Disk Drives
and other PC Peripherals
• PC Card Devices for Notebook Computers
• Low Cost Thermostat Controls
• Power Supplies
• Thermistor Replacement
Package Type
General Description
The TC74 is a serially accessible digital temperature
sensor particularly suited for low cost and small form-
factor applications. Temperature data is converted from
the onboard thermal sensing element and made
available as an 8-bit digital word.
Communication with the TC74 is accomplished via a 2-
wire SMBus/I2C™compatible serial port. This bus also
can be used to implement multi-drop/multi-zone
monitoring. The SHDN bit in the CONFIG register can
be used to activate the low power Standby mode.
Temperature resolution is 1°C. Conversion rate is a
nominal 8 samples/sec. Power consumption is only
200µAtyp,(5µA Standby, typ).
Small size, low installed cost, and ease of use make the
TC74 an ideal choice for implementing thermal
management in a variety of systems.
Functional Block Diagram
GND
VDD
NC
SDA
SCLK
12345
TC74
TO-220
SOT-23
VDD
GND
12
NC
54
SDA SCLK
TC74
3
Internal Sensor
(Diode)
∆∑ Modulator
Temperature
Register
Serial Port
Interface
Control
Logic
SDA
SCL
Tiny Serial Digital Thermal Sensor
TC74
DS21462B-page 2
2002 Microchip Technology Inc.
Device Selection Table
NOTE: *Default Address.
Part Number Package Address Temperature Range
TC74A0-3.3VCT SOT-23A-5 1001 000 -40°C to +125°C
TC74A1-3.3VCT SOT-23A-5 1001 001 -40°C to +125°C
TC74A2-3.3VCT SOT-23A-5 1001 010 -40°C to +125°C
TC74A3-3.3VCT SOT-23A-5 1001 011 -40°C to +125°C
TC74A4-3.3VCT SOT-23A-5 1001 100 -40°C to +125°C
TC74A5-3.3VCT* SOT-23A-5 1001 101* -40°C to +125°c
TC74A6-3.3VCT SOT-23A-5 1001 110 -40°C to +125°C
TC74A7-3.3VCT SOT-23A-5 1001 111 -40°C to +125°C
TC74A0-5.0VCT SOT-23A-5 1001 000 -40°C to +125°C
TC74A1-5.0VCT SOT-23A-5 1001 001 -40°C to +125°C
TC74A2-5.0VCT SOT-23A-5 1001 010 -40°C to +125°C
TC74A3-5.0VCT SOT-23A-5 1001 011 -40°C to +125°C
TC74A4-5.0VCT SOT-23A-5 1001 100 -40°C to +125°C
TC74A5-5.0VCT* SOT-23A-5 1001 101 -40°C to +125°C
TC74A6-5.0VCT SOT-23A-5 1001 110 -40°C to +125°C
TC74A7-5.0VCT SOT-23A-5 1001 111 -40°C to +125°C
TC74A0-3.3VAT TO-220-5 1001 000 -40°C to +125°C
TC74A1-3.3VAT TO-220-5 1001 001 -40°C to +125°C
TC74A2-3.3VAT TO-220-5 1001 010 -40°C to +125°C
TC74A3-3.3VAT TO-220-5 1001 011 -40°C to +125°C
TC74A4-3.3VAT TO-220-5 1001 100 -40°C to +125°C
TC74A5-3.3VAT TO-220-5 1001 101 -40°C to +125°C
TC74A6-3.3VAT TO-220-5 1001 110 -40°C to +125°C
TC74A7-3.3VAT TO-220-5 1001 111 -40°C to +125°C
TC74A0-5.0VAT TO-220-5 1001 000 -40°C to +125°C
TC74A1-5.0VAT TO-220-5 1001 001 -40°C to +125°C
TC74A2-5.0VAT TO-220-5 1001 010 -40°C to +125°C
TC74A3-5.0VAT TO-220-5 1001 011 -40°C to +125°C
TC74A4-5.0VAT TO-220-5 1001 100 -40°C to +125°C
TC74A5-5.0VAT TO-220-5 1001 101 -40°C to +125°C
TC74A6-5.0VAT TO-220-5 1001 110 -40°C to +125°C
TC74A7-5.0VAT TO-220-5 1001 111 -40°C to +125°C
2002 Microchip Technology Inc. DS21462B-page 3
TC74
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Supply Voltage (VDD)............................................ +6V
Voltage On Any Pin.......(GND – 0.3V) to (VDD +0.3V)
Current On Any Pin..........................................±50 mA
Operating Temperature (TA)........................See Below
Storage Temperature (TSTG)..............-65°C to +150°C
*Stresses above those listed under "Absolute Maximum Rat-
ings" 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. Expo-
sure to Absolute Maximum Rating conditions for extended
periods may affect device reliability.
TC74 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: VDD =3.3Vor5.0V(Note 5),-40°C≤TA≤125°C, unless otherwise noted.
Symbol Parameter Min Typ. Max Unit Test Conditions
Power Supply
VPOR Power-on Reset Threshold 1.2 — 2.2 V VDD Falling Edge or Rising Edge
IDD Operating Current — 200 350 µAV
DD =5.5V
Serial Port Inactive (Note 1)
IDD-STANDBY Standby Supply Current — 5 10 µAV
DD =3.3V
Serial Port Inactive (Note 1)
Temperature to Bits Converter
TERR Temperature Accuracy TC74A -2
-3
—
—+2
—
+2
°C +25°C <TA<+85°C
0°C < TA< +125°C
-40°C < TA<0°C
CR Conversion Rate 4 8 — Sps (Note 2)
Serial Port Interface
VIH Logic Input High 0.8 x VDD —— V
VIL Logic Input Low — — 0.2 x VDD V
VOL SDA Output Low —
——
—0.4
0.6 V
VIOL =3mA
IOL =6mA(Note 3)
CIN Input Capacitance SDA, SCL — 5 — pF
ILEAK I/O Leakage -1 0.1 1 µA
Note 1: Operating current is an average value integrated over multiple conversion cycles. Transient current may exceed this specification.
2: Maximum ensured conversion time after Power-on Reset (POR to DATA_RDY) is 250 msec.
3: Output current should be minimized for best temperature accuracy. Power dissipation within the TC74 will cause self-heating and
temperature drift error.
4: SDA and SCLK must be connected to VDD or GND.
5: VDD = 3.3V for TC74X -3.3VCT. VDD = 5.0V for TC74X -5.0VCT. All part types of the TC74 will operate properly over the wider power
supply range of 2.7V to 5.5V. Each part type is tested and specified for rated accuracy at its nominal supply voltage. As VDD varies from
the nominal value, accuracy will degrade 1°C/V of VDD change.
TC74
DS21462B-page 4
2002 Microchip Technology Inc.
TC74 ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: VDD =3.3Vor5.0V(Note 5),-40°C≤TA≤125°C, CL= 80pF unless otherwise noted.
Serial Port AC Timing
Symbol Parameter Min Typ. Max Unit Test Conditions
fSMB SMBus Clock Frequency 10 — 100 kHz
tLOW Low Clock Period 4.7 — — µsec 10% to 10%
tHIGH High Clock Period 4 — — µsec 90% to 90%
tR
tF
SMBus Rise Time
SMBus Fall Time —
——
—1000
300 nsec
nsec 10% to 90%
90% to10%
tSU(START) START Condition Setup Time
(for repeated START Condition) 4——µsec 90% SCLK to 10% SDA
tH(START) START Condition Hold Time 4 — — µsec
tSU-DATA Data In Setup Time 1000 — — nsec
tH-DATA Data In Hold Time 1250 — — nsec
tSU(STOP) STOP Condition Setup Time 4 — — µsec
tIDLE Bus Free Time Prior to New Tran-
sition 4.7 — — µsec
tPOR Power-on Reset Delay — 500 — µsec VDD ≥ VPOR (Rising Edge)
Note 1: Operating current is an average value integrated over multiple conversion cycles. Transient current may exceed this specification.
2: Maximum ensured conversion time after Power-on Reset (POR to DATA_RDY) is 250 msec.
3: Output current should be minimized for best temperature accuracy. Power dissipation within the TC74 will cause self-heating and
temperature drift error.
4: SDA and SCLK must be connected to VDD or GND.
5: VDD = 3.3V for TC74X -3.3VCT. VDD = 5.0V for TC74X -5.0VCT. All part types of the TC74 will operate properly over the wider power
supply range of 2.7V to 5.5V. Each part type is tested and specified for rated accuracy at its nominal supply voltage. As VDD varies from
the nominal value, accuracy will degrade 1°C/V of VDD change.
2002 Microchip Technology Inc. DS21462B-page 5
TC74
2.0 PIN DESCRIPTIONS
ThedescriptionsofthepinsarelistedinTable2-1.
TABLE 2-1: PIN FUNCTION TABLE
Pin Number
(5-Pin SOT-23) Pin Number
(5-Pin TO-220) Symbol Type Description
1 1 NC None No Internal Connection.
2 3 GND Power System Ground
35V
DD Power Power Supply Input
4 4 SCLK Input SMBus Serial Clock
5 2 SDA Bi-directional SMBus Serial Data
TC74
DS21462B-page 6
2002 Microchip Technology Inc.
Timing Diagrams
tSU(START) tH(START) tSU-Data tSU(STOP)tIDLE
A = START Condition
B = MSB of Address Clocked into Slave
C = LSB of Address Clocked into Slave
D = R/W Bit Clocked into Slave
ABCDEFG H
IJ
K
E = Slave Pulls SDA Line Low
F = Acknowledge Bit Clocked into Master
G = MSB of Data Clocked into Master
H = LSB of Data Clocked into Master
I = Acknowledge Clock Pulse
J = STOP Condition
K = New START Condition
SCL
SDA
SMBUS READ Timing Diagram
tSU(START) tH(START) tSU-DATA tH-DATA tSU(STOP) tIDLE
A = START Condition
B = MSB of Address Clocked into Slave
C = LSB of Address Clocked into Slave
D = R/W Bit Clocked into Slave
E = Slave Pulls SDA Line Low
ABCDEFG H
IJKL
M
F = Acknowledge Bit Clocked into Master
G = MSB of Data Clocked into Slave
H = LSB of Data Clocked into Slave
I = Slave Pulls SDA Line Low
J = Acknowledge Clocked into Master
K = Acknowledge Clock Pulse
L = STOP Condition, Data Executed by Slave
M = New START Condition
ILOW IHIGH
SCL
SDA
SMBUS Write Timing Diagram
IHIGH
ILOW
2002 Microchip Technology Inc. DS21462B-page 7
TC74
3.0 DETAILED DESCRIPTION
3.1 Functional Description
The TC74 acquires and converts temperature
information from its onboard solid-state sensor with a
resolution of ±1°C. It stores the data in an internal
register which is read through the serial port. The
system interface is a slave SMBus. The temperature
data can be read at any time through the SMBus port.
Eight SMBus addresses are programmable for the
TC74, which allows for a multi-sensor configuration.
Also, there is low power Standby mode when
temperature acquisition is suspended.
3.1.1 STANDBY MODE
The TC74 allows the host to put it into a low power (IDD
=5µA, typical) Standby mode. In this mode, the A/D
converter is halted and the temperature data registers
are frozen. The SMBus port operates normally.
Standby mode is enabled by setting the SHDN bit in the
CONFIG register. Table 3-1 summarizesthis operation.
TABLE 3-1: STANDBY MODE OPERATION
3.1.2 SMBUS SLAVE ADDRESS
The TC74 is internally programmed to have a default
SMBus address value of 1001 101b. Seven other
addresses are available by custom order (contact
factory).
3.2 Serial Port Operation
The Serial Clock input (SCL) and bi-directional data
port (SDA) form a 2-wire bi-directional serial port for
programming and interrogating the TC74. The
following conventions are used in this bus architecture:
TABLE 3-2: SERIAL BUS CONVENTIONS
All transfers take place under control of a host, usually
a CPU or microcontroller, acting as the Master, which
provides the clock signal for all transfers. The TC74
always operates as a Slave. The serial protocol is
illustrated in Figure 3-1 All data transfers have two
phases; all bytes are transferred MSB first. Accesses
are initiatedby aSTART condition, followed by a device
address byte and one or more data bytes. The device
address byte includes a Read/Write selection bit. Each
access must be terminated by a STOP Condition. A
convention calledAcknowledge (ACK) confirms receipt
of each byte. Note that SDA can change only during
periods when SCL is LOW (SDA changes while SCL is
HIGH are reserved for START and STOP Conditions).
SHDN Bit Operating Mode
0Normal
1 Standby
Term Explanation
Transmitter The device sending data to the bus.
Receiver The device receiving data from the bus.
Master The device which controls the bus: initiating
transfers (START), generating the clock, and
terminating transfers. (STOP)
Slave The device addressed by the master.
START A unique condition signaling the beginning of
a transfer indicated by SDA falling (High-Low)
while SCL is high.
STOP A unique condition signaling the end of a
transfer indicated by SDA rising (Low-High)
while SCL is High.
ACK A Receiver acknowledges the receipt of each
byte with this unique condition. The Receiver
drives SDA low during SCL high of the ACK
clock-pulse. The Master provides the clock
pulsefortheACKcycle.
Busy Communication is not possible because the
busisinuse.
NOT Busy When the bus is idle, both SDA and SCL will
remain high.
Data Valid The state of SDA must remain stable during
the High period of SCL in order for a data bit
to be considered valid. SDA only changes
state while SCL is low during normal data
transfers. (See START and STOP condi-
tions.)
TC74
DS21462B-page 8
2002 Microchip Technology Inc.
FIGURE 3-1: SMBUS PROTOCOLS
3.3 START Condition (S)
The TC74 continuously monitors the SDA and SCL
lines for a START condition (a HIGH to LOW transition
of SDA while SCL is HIGH) and will not respond until
this condition is met.
3.4 Address Byte
Immediately following the START Condition, the host
must transmit the address byte to the TC74. The states
of A1 and A0 determine the 7-bit SMBus address for
the TC74. The 7-bit address transmitted in the serial bit
stream must match for the TC74 to respond with an
Acknowledge (indicating the TC74 is on the bus and
ready to accept data). The 8-bit in the Address Byte is
a Read/Write Bit. This bit is a ‘1’ for a read operation or
‘0’ for a write operation. During the first phase of any
transfer this bit will be set = 0 to indicate that the
command byte is being written.
3.5 Acknowledge (ACK)
Acknowledge (ACK) provides a positive handshake
between the host and the TC74. The host releases
SDA after transmitting 8 bits. The host then generates
a ninth clock cycle to allow the TC74 to pull the SDA
line LOW. This action acknowledges that the TC74
successfully received the previous eight bits of data or
address.
3.6 Data Byte
After a successful ACK of the address byte, the host
must transmit the data byte to be written or clock in the
data to be read. (See the appropriate timing diagrams).
ACK will be generated after a successful write of a data
byte into the TC74.
3.7 STOP Condition (P)
Communications must be terminated by a STOP
condition (a LOW to HIGH transition of SDA while SCL
is HIGH). The STOP Condition must be communicated
by the transmitter to the TC74. NOTE: Refer to Timing
Diagrams for serial bus timing.
SAddress WR ACKCommand
ACK Data ACK P
8 Bits7 Bits 8 Bits
Slave Address Command Byte: selects
which register you are
writing to.
Data Byte: data goes
into the register set
by the command byte.
Write Byte Format
Read Byte Format
SAddress WR ACKCommand
ACK SAddress RD ACK Data NACK P
7 Bits 8 Bits 7 Bits 8 Bits
Slave Address Command Byte: selects
which register you are
reading from.
Slave Address: repeated
due to change in data-
flow direction.
Data Byte: reads from
the register set by the
command byte.
Receive Byte Format
SAddress RD ACK Data Nack P
7 Bits 8 Bits
Data Byte: reads data from
the register commanded by
the last Read Byte or Write
B
y
te transmission.
S = START Condition
P = STOP Condition
Shaded = Slave Transmission
2002 Microchip Technology Inc. DS21462B-page 9
TC74
4.0 REGISTER SET AND
PROGRAMMER’S MODEL
TABLE 4-2: CONFIGURATION REGISTER
(CONFIG); 8 BITS, READ/
WRITE)
FIGURE 4-1: DATA_RDY, SHDN
OPERATION LOGIC
DIAGRAM
4.1 Temperature Register (TEMP),
8 Bits, READ ONLY
The binary value (2’s complement format) in this regis-
ter represents temperature of the onboard sensor
following a conversion cycle. The registers are
automatically updated in an alternating manner.
TABLE 4-3: TEMPERATURE REGISTER
(TEMP)
In the temperature data registers, each unit value repre-
sents one degree (Celsius). The value is in 2’s
complement binary format such that a reading of 0000
0000b corresponds to 0°C. Examples of this tempera-
ture to binary value relationship areshown in Table 4-4.
4.2 Register Set Summary
The TC74 register set is summarized in Table 4-5. All
registersare8bitswide.
TABLE 4-1: COMMAND BYTE
DESCRIPTION
(SMBUS READ_BYTE AND
WRITE_BYTE)
COMMAND CODE FUNCTION
RTR 00h Read Temperature (TEMP)
RWCR 01h Read/Write Configuration
(CONFIG)
BIT POR FUNCTION TYPE OPERATION
D[7] 0 STANDBY
Switch Read/
Write 1 = standby,
0 = normal
D[6] 0 Data Ready* Read
Only 1=ready
0 = not ready
D[5]-D[0] 0 Reserved -
Always returns
zerowhenread
N/A N/A
*Note: DATA_RDY bit RESET at power-up and SHDN
enable.
V
DD
DATA_RDY
SHDN
tconv tconv
D[7] D[6] D[5] D[4] D[3] D[2] D[1] D[0]
MSB X X X X X X LSB
TABLE 4-4: TEMPERATURE TO DIGITAL
VALUE CONVERSION (TEMP)
ACTUAL
TEMP. REGISTERED
TEMP. BINARY
HEX
+130.00°C +127°C 0111 1111
+127.00°C +127°C 0111 1111
+126.50°C +127°C 0111 1111
+25.25°C +25°C 0001 1001
+0.50°C +1°C 0000 0001
+0.25°C 0°C 0000 0000
0.00°C 0°C 0000 0000
-0.25°C 0°C 0000 0000
-0.50°C 0°C 0000 0000
-0.75°C -1°C 1111 1111
-1.00°C -1°C 1111 1111
-25.00°C -25°C 1110 0111
-25.25°C -25°C 1110 0110
-54.75°C -55°C 1100 1001
-55.00°C -55°C 1100 1001
-65.00°C -65°C 1011 1111
TABLE 4-5: TC74 REGISTER SET
SUMMARY
NAME DESCRIPTION POR State READ WRITE
TEMP Internal Sensor
Temp. (2’s
Complement)
0000 0000b* ✓
CONFIG CONFIG
Register 0000 0000b ✓✓
*Note: The TEMPresigisterwillbe immediately updated by
the A/D converter after the DATA_RDY Bit goes High.
TC74
DS21462B-page 10
2002 Microchip Technology Inc.
5.0 PACKAGING INFORMATION
5.1 Package Marking Information
1 & 2 = part number code + temperature range and
voltage
3 = year and quarter code
4 = lot ID number
TABLE 5-1: PACKAGE MARKING CODES
SOT-23
1234
TC74 (V) Code
TC74A0-3.3VCT V0
TC74A1-3.3VCT V1
TC74A2-3.3VCT V2
TC74A3-3.3VCT V3
TC74A4-3.3VCT V4
TC74A5-3.3VCT V5
TC74A6-3.3VCT V6
TC74A7-3.3VCT V7
TC74A0-5.0VCT U0
TC74A1-5.0VCT U1
TC74A2-5.0VCT U2
TC74A3-5.0VCT U3
TC74A4-5.0VCT U4
TC74A5-5.0VCT U5
TC74A6-5.0VCT U6
TC74A7-5.0VCT U7
2002 Microchip Technology Inc. DS21462B-page 11
TC74
5.2 Taping Forms
5.3 Package Dimensions
Component Taping Orientation for 5-Pin SOT-23A (EIAJ SC-74A) Devices
Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size
5-Pin SOT-23A 8 mm 4 mm 3000 7 in
Carrier Tape, Number of Components Per Reel and Reel Size
User Direction of Feed
Device
Marking
PIN 1
Standard Reel Component Orientation
TR Suffix Device
(Mark Right Side Up)
W
P
.071 (1.80)
.059 (1.50)
.122 (3.10)
.098 (2.50)
.075 (1.90)
REF.
.020 (0.50)
.012 (0.30)
PIN 1
.037 (0.95)
REF.
.122 (3.10)
.106 (2.70)
.057 (1.45)
.035 (0.90)
.006 (0.15)
.000 (0.00)
.024 (0.60)
.004 (0.10)
10° MAX. .010 (0.25)
.004 (0.09)
SOT-23A-5
Dimensions: inches (mm)
TC74
DS21462B-page 12
2002 Microchip Technology Inc.
NOTES:
2002 Microchip Technology Inc. DS21462B-page 13
TC74
SALES AND SUPPORT
Data Sheets
Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recom-
mended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following:
1. Your local Microchip sales office
2. The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277
3. The Microchip Worldwide Site (www.microchip.com)
Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using.
New Customer Notification System
Register on our web site (www.microchip.com/cn) to receive the most current information on our products.
TC74
DS21462B-page 14
2002 Microchip Technology Inc.
NOTES:
2002 Microchip Technology Inc. DS21462B-page 15
TC74
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 com-
ponents in life support systems is not authorized except with
express written approval by Microchip. No licenses are con-
veyed, implicitly or otherwise, under any intellectual property
rights.
Trademarks
The Microchip name and logo, the Microchip logo, FilterLab,
KEELOQ,microID,MPLAB,PIC,PICmicro,PICMASTER,
PICSTART, PRO MATE, SEEVAL and The Embedded Control
Solutions Company are registered trademarks of Microchip Tech-
nologyIncorporated in the U.S.A. and other countries.
dsPIC, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB,
In-Circuit Serial Programming, ICSP, ICEPIC, microPort,
Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM,
MXDEV, PICC, PICDEM, PICDEM.net, rfPIC, Select Mode
and Total Endurance are trademarks of Microchip Technology
Incorporated in the U.S.A.
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.
© 2002, 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,
design and wafer fabrication facilities in
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.
DS21462B-page 16
2002 Microchip Technology Inc.
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: http://www.microchip.com
Rocky Mountain
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7966 Fax: 480-792-7456
Atlanta
500 Sugar Mill Road, Suite 200B
Atlanta, GA 30350
Tel: 770-640-0034 Fax: 770-640-0307
Boston
2 Lan Drive, Suite 120
Westford, MA 01886
Tel: 978-692-3848 Fax: 978-692-3821
Chicago
333 Pierce Road, Suite 180
Itasca, IL 60143
Tel: 630-285-0071 Fax: 630-285-0075
Dallas
4570 Westgrove Drive, Suite 160
Addison, TX 75001
Tel: 972-818-7423 Fax: 972-818-2924
Detroit
Tri-Atria Office Building
32255 Northwestern Highway, Suite 190
Farmington Hills, MI 48334
Tel: 248-538-2250 Fax: 248-538-2260
Kokomo
2767 S. Albright Road
Kokomo, Indiana 46902
Tel: 765-864-8360 Fax: 765-864-8387
Los Angeles
18201 Von Karman, Suite 1090
Irvine, CA 92612
Tel: 949-263-1888 Fax: 949-263-1338
New York
150 Motor Parkway, Suite 202
Hauppauge, NY 11788
Tel: 631-273-5305 Fax: 631-273-5335
San Jose
Microchip Technology Inc.
2107 North First Street, Suite 590
San Jose, CA 95131
Tel: 408-436-7950 Fax: 408-436-7955
Toronto
6285 Northam Drive, Suite 108
Mississauga, Ontario L4V 1X5, Canada
Tel: 905-673-0699 Fax: 905-673-6509
ASIA/PACIFIC
Australia
Microchip Technology Australia Pty Ltd
Suite 22, 41 Rawson Street
Epping 2121, NSW
Australia
Tel: 61-2-9868-6733 Fax: 61-2-9868-6755
China - Beijing
Microchip Technology Consulting (Shanghai)
Co., Ltd., Beijing Liaison Office
Unit 915
Bei Hai Wan Tai Bldg.
No. 6 Chaoyangmen Beidajie
Beijing, 100027, No. China
Tel: 86-10-85282100 Fax: 86-10-85282104
China - Chengdu
Microchip Technology Consulting (Shanghai)
Co., Ltd., Chengdu Liaison Office
Rm. 2401, 24th Floor,
Ming Xing Financial Tower
No. 88 TIDU Street
Chengdu 610016, China
Tel: 86-28-6766200 Fax: 86-28-6766599
China - Fuzhou
Microchip Technology Consulting (Shanghai)
Co., Ltd., Fuzhou Liaison Office
Unit 28F, World Trade Plaza
No. 71 Wusi Road
Fuzhou 350001, China
Tel: 86-591-7503506 Fax: 86-591-7503521
China - Shanghai
Microchip Technology Consulting (Shanghai)
Co., Ltd.
Room 701, Bldg. B
Far East International Plaza
No. 317 Xian Xia Road
Shanghai, 200051
Tel: 86-21-6275-5700 Fax: 86-21-6275-5060
China - Shenzhen
Microchip Technology Consulting (Shanghai)
Co., Ltd., Shenzhen Liaison Office
Rm. 1315, 13/F, Shenzhen Kerry Centre,
Renminnan Lu
Shenzhen 518001, China
Tel: 86-755-2350361 Fax: 86-755-2366086
Hong Kong
Microchip Technology Hongkong Ltd.
Unit 901-6, Tower 2, Metroplaza
223 Hing Fong Road
Kwai Fong, N.T., Hong Kong
Tel: 852-2401-1200 Fax: 852-2401-3431
India
Microchip Technology Inc.
India Liaison Office
Divyasree Chambers
1 Floor, Wing A (A3/A4)
No. 11, O’Shaugnessey Road
Bangalore, 560 025, India
Tel: 91-80-2290061 Fax: 91-80-2290062
Japan
Microchip Technology Japan K.K.
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
Korea
Microchip Technology Korea
168-1, Youngbo Bldg. 3 Floor
Samsung-Dong, Kangnam-Ku
Seoul, Korea 135-882
Tel: 82-2-554-7200 Fax: 82-2-558-5934
Singapore
Microchip Technology Singapore Pte Ltd.
200 Middle Road
#07-02 Prime Centre
Singapore, 188980
Tel: 65-6334-8870 Fax: 65-6334-8850
Taiwan
Microchip Technology Taiwan
11F-3, No. 207
Tung Hua North Road
Taipei, 105, Taiwan
Tel: 886-2-2717-7175 Fax: 886-2-2545-0139
EUROPE
Denmark
Microchip Technology Nordic ApS
Regus Business Centre
Lautrup hoj 1-3
Ballerup DK-2750 Denmark
Tel: 45 4420 9895 Fax: 45 4420 9910
France
Microchip Technology SARL
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
Microchip Technology GmbH
Gustav-Heinemann Ring 125
D-81739 Munich, Germany
Tel: 49-89-627-144 0 Fax: 49-89-627-144-44
Italy
Microchip Technology SRL
Centro Direzionale Colleoni
Palazzo Taurus 1 V. Le Colleoni 1
20041 Agrate Brianza
Milan, Italy
Tel: 39-039-65791-1 Fax: 39-039-6899883
United Kingdom
Arizona Microchip Technology Ltd.
505 Eskdale Road
Winnersh Triangle
Wokingham
Berkshire, England RG41 5TU
Tel: 44 118 921 5869 Fax: 44-118 921-5820
03/01/02
WORLDWIDE SALES AND SERVICE
*DS21462B*
