Microchip Technology TC74A7-5.0VCT, TC74A7-5.0VAT, TC74A7-3.3VCT, TC74A7-3.3VAT, TC74A6-5.0VCT Datasheet

Tiny Serial Digital Thermal Sensor

TC74

Features

• Digital TemperatureSensing in SOT-23-5 Package

• Outputs Temperature as an8-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

TO-220

General Description

The TC74 is a serially accessible digital temperature
sensor particularly suited for low cost and small form­factorapplications. Temperaturedataisconverted from
the onboard thermal sensing element and made
available as an 8-bit digital word.

Communicationwiththe TC74 is accomplishedviaa 2­wire SMBus/I
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).

Smallsize,lowinstalledcost,andeaseofusemakethe
TC74 an ideal choice for implementing thermal
management in a variety of systems.

2C™

compatible serial port. This bus also

Functional Block Diagram

Internal Sensor

(Diode)

Serial Port

Interface

SDA

SCL

TC74

12345

SDA

GND

DD

V

SCLK

NC

SOT-23

SDA SCLK

5

4

TC74

NC

1

2

GND

3

V

DD

∆∑ Modulator

Control

Logic

Temperature

Register



2002 Microchip TechnologyInc. DS21462B-page 1

TC74

Device Selection Table

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

NOTE: *DefaultAddress.

DS21462B-page 2



2002 Microchip TechnologyInc.

TC74

1.0 ELECTRICAL

CHARACTERISTICS

*Stresses above those listed under "Absolute Maximum Rat­ings"maycause permanentdamage to thedevice.These are
stress ratings only and functional operation of the device at
these or any other conditions above those indicated in the

Absolute Maximum Ratings*

Supply Voltage (VDD)............................................ +6V

Voltage On Any Pin....... (GND – 0.3V) to (V

DD

+0.3V)

operation sections of the specifications is not implied. Expo­sure to Absolute Maximum Rating conditions for extended
periodsmay affectdevice reliability.

Current On Any Pin.......................................... ±50 mA

Operating Temperature (T
StorageTemperature (T

)........................ See Below

A

)..............-65°C to +150°C

STG

TC74 ELECTRICAL SPECIFICATIONS

Electrical Characteristics: VDD=3.3Vor5.0V(Note 5),-40°C≤ TA≤ 125°C, unless otherwisenoted.

Symbol Parameter Min Typ. Max Unit Test Conditions

Power Supply

V

POR

I

DD

I

DD-STANDBY

Temperature to Bits Converter

T

ERR

CR Conversion Rate 4 8 — Sps (Note2)

Serial Port Interface

V

IH

V

IL

V

OL

C

IN

I

LEAK

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

4: SDA andSCLK mustbe connectedto V
5: V

Power-on Reset Threshold 1.2 — 2.2 V VDDFalling Edge or Rising Edge
Operating Current — 200 350 µAVDD=5.5V

Serial Port Inactive (Note 1)

StandbySupply Current — 5 10 µAVDD=3.3V

Serial Port Inactive (Note 1)

DD

°C +25°C<T

0°C < T

-40°C < T

V
V

IOL=3mA

V

I

=6mA(Note 3)

OL

<+85°C

A

< +125°C

A

<0°C

A

Temperature Accuracy TC74A -2

-3
—

Logic Input High 0.8 x V

—+2

—
+2

—— V

DD

Logic Input Low — — 0.2 x V
SDA OutputLow —

—

—
—

0.4

0.6
Input Capacitance SDA, SCL — 5 — pF
I/O Leakage -1 0.1 1 µA

temperature drift error.

or GND.

= 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

DD

supply range of 2.7V to 5.5V. Each part type is tested and specified for rated accuracy at its nominal supply voltage. As V
the nominal value, accuracy will degrade 1°C/V of V

DD

DD

change.

DD

varies from



2002 Microchip TechnologyInc. DS21462B-page 3

TC74

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

f

SMB

t

LOW

t

HIGH

t

R

t

F

t

SU(START)

t

H(START)

t

SU-DATA

t

H-DATA

t

SU(STOP)

t

IDLE

t

POR

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

4: SDA andSCLK mustbe connectedto V
5: V

SMBusClockFrequency 10 — 100 kHz
Low Clock Period 4.7 — — µsec 10% to 10%
High Clock Period 4 — — µsec 90% to 90%
SMBusRiseTime

SMBus Fall Time
STAR T Condition Setup Time

—
—

—

1000

—

300

nsec
nsec

10% to 90%
90% to10%

4——µsec 90% SCLK to 10% SDA

(forrepeated START Condition)
START Condition Hold Time 4 — — µsec
Data In Setup Time 1000 — — nsec
Data In Hold Time 1250 — — nsec
STOP Condition Setup Time 4 — — µsec
Bus Free Time Prior to New Tran-

4.7 — — µsec

sition
Power-on Res et Delay — 500 — µsec VDD≥ V

temperature drift error.

or GND.

= 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

DD

supply range of 2.7V to 5.5V. Each part type is tested and specified for rated accuracy at its nominal supply voltage. As V
the nominal value, accuracy will degrade 1°C/V of V

DD

DD

change.

(Rising Edge)

POR

DD

varies from

DS21462B-page 4



2002 Microchip TechnologyInc.

2.0 PIN DESCRIPTIONS

ThedescriptionsofthepinsarelistedinTable2-1.

TABLE 2-1: PIN FUNCTION TABLE

TC74

Pin Number

(5-Pin SOT-23)

1 1 NC None No Internal Connection.
2 3 GND Power System Ground
35V
4 4 SCLK Input SMBus Serial Clock
5 2 SDA Bi-directional SMBus Serial Data

Pin Number

(5-Pin TO-220)

Symbol Type Description

DD

Power Power Supply Input



2002 Microchip TechnologyInc. DS21462B-page 5

TC74

Timing Diagrams

SMBUS READ Timing Diagram

SCL

SDA

A

B

I

I

HIGH

LOW

CDEFG H

IJ

K

tSU(START) tH(START)

A = START Condition
B = MSB of Address Clocked into Slave
C = LSB of Address Clocked into Slave
D = R/W Bit Clocked into Slave

SMBUS Write Timing Diagram

A

I

SCL

SDA

tSU(START) tH(START)

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

LOW

t

-Data

t

SU

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

B

I

HIGH

CDEFG HIJ

t

-DATA

SU

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

I = Acknowledge Clock Pulse
J = STOP Condition
K = New START Condition

-DATA tSU(STOP) t

t

H

J = Acknowledge Clocked into Master
K = Acknowledge Clock Pulse
L = STOP Condition, Data Executed by Slave
M = New START Condition

(STOP)t

SU

KL

IDLE

IDLE

M

DS21462B-page 6



2002 Microchip TechnologyInc.

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 i nto a low power(I
=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 inthe
CONFIG register. Table 3-1summarizest his operation.

TABLE 3-1: STANDBY MODE OPERATION

SHDN Bit Operating Mode

0Normal
1 Standby

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
followingconventionsare used i n this bus architecture:

DD

TABLE 3-2: SERIAL BUS CONVENTIONS

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 themaster.

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
drivesSDAlow duringSCLhigh of the ACK
clock-pulse. The Master provides the clock
pulsefortheACKcycle.

Busy Communication is not possiblebecause the

busisinuse.

NOT Busy When the bus is idle, both SDA and SCL will

remainhigh.

Data Valid The state of SDA must remain stable during

the High periodof SCL in order for a databit
to be considered valid. SDA only changes
statewhileSCL is low during normal data
transfers. (See START and STOP condi­tions.)

All transfers take place under control of a host, usually
a CPU or mi crocontroller, 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
areinitiatedbyaSTARTcondition, followedbya 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
conventioncalledAcknowledge (ACK) confirms receipt
of each byte. Note that SDA can change only during
periods when SCL is LOW (SDA changes while SCL is
HIGH ar e reserved for START and STOP Conditions).



2002 Microchip TechnologyInc. DS21462B-page 7

TC74

y

FIGURE 3-1: SMBUS PROTOCOLS

Write Byte Format

S

Read Byte Format

Address WR

S

Slave Address Command Byte: selects

Receive Byte Format

S

S = START Condition

P = STOP Condition

Shaded = Slave Transmission

Address WR

Slave Address Command Byte: selects

ACK

7 Bits

Address RD ACK

7 Bits

8 Bits

which register you are
reading from.

Data Nack P

8 Bits

Data Byte: reads data from
the register commanded by
the last Read Byte or Write
B

te transmission.

ACK

which register you are
writing to.

S

ACKCommand

ACKCommand

8 Bits7 Bits

Address RD ACK

7 Bits

Slave Address: repeated
due to change in data­flow direction.

Data

ACK P

8 Bits

Data Byte: data goes
into the register set
by the command byte.

Data NACK P

8 Bits

Data Byte: reads from
the register set by the
command byte.

3.3 START Condition (S)

The TC74 continuously monitors the SDA and SCL
lines for a STARTcondition (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 transmitthe address byte to the TC74. The states
of A1 and A0 determine the 7-bit SMBus address for
the TC74. The 7- bit addresstransmittedintheserial 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
datatobe read. (See the appropriatetimingdiagrams).
ACK will be generatedafterasuccessfulwriteofa 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 transmitterto the TC74. NO TE: Refer to Timing
Diagrams for serial bus timing.

DS21462B-page 8



2002 Microchip TechnologyInc.

TC74

4.0 REGISTER SET AND
PROGRAMMER’S MODEL

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)

TABLE 4-2: CONFIGURATION REGISTER

(CONFIG); 8 BITS, READ/
WRITE)

BIT POR FUNCTION TYPE OPERATION

D[7] 0 STANDBY

Switch

D[6] 0 Data Ready* Read

D[5]-D[0] 0 Reserved -

*Note: DATA_RDY bit RESET at power-up and SHDN
enable.

Always returns

zerowhenread

FIGURE 4-1: DATA_RDY, SHDN

OPERATION LOGIC
DIAGRAM

V

DD

Read/

Write

Only

1 = standby,

0 = normal

1=ready

0 = not ready

N/A N/A

TABLE 4-3: TEMPERATURE REGISTER

(TEMP)

D[7] D[6] D[5] D[4] D[3] D[2] D[1] D[0]

MSB X X X X X X LSB

I

n thetemperaturedataregisters,each unit value repre­sents 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 tempera­tureto binaryvalue relationship are shown in Table 4-4

TABLE 4-4: TEMPERATURE TO DIGITAL

VALUE CONVERSION (TEMP)

ACTUAL

TEMP.

+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

REGISTERED

TEMP.

BINARY

HEX

.

4.2 Register Set Summary

DATA_RDY

SHDN

t

conv

t

conv

4.1 Temperature Register (TEMP),
8 Bits, READ ONLY

The binary value (2’s complementformat) in this regis­ter represents temperature of the onboard sensor
following a conversion cycle. The registers are
automaticallyupdated in an alternating manner.



2002 Microchip TechnologyInc. DS21462B-page 9

The TC74 register set is summarized in Table 4-5. All
registersare8bitswide.

TABLE 4-5: TC74 REGISTER SET

SUMMARY

NAME DESCRIPTION POR State READ WRITE

TEMP Internal Sensor

Temp. (2’s

Complement)

CONFIG CONFIG

Register

*Note: The TEMPresigisterwillbe immediatelyupdated by
the A/D converterafter the DATA_RDYBit goes High.

0000 0000b* ✓

0000 0000b ✓✓

TC74

5.0 PACKAGING INFORMATION

5.1 Package Marking Information

SOT-23

1234

1 & 2 = part number code + temperature range and
voltage

3 = year and quarter code
4 = lot ID number

TABLE 5-1: PACKAGE MARKING CODES

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

DS21462B-page 10



2002 Microchip TechnologyInc.

5.2 Taping Forms

Component Taping Orientation for 5-Pin SOT-23A (EIAJ SC-74A) Devices

TC74

User Direction of Feed

Device

Marking

W

PIN 1

Carrier Tape, Number of Components Per Reel and Reel Size

Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size

5-Pin SOT-23A 8 mm 4 mm 3000 7 in

5.3 Package Dimensions

SOT-23A-5

.122 (3.10)
.098 (2.50)

.020 (0.50)
.012 (0.30)

PIN 1

P

Standard Reel Component Orientation
TR Suffix Device
(Mark Right Side Up)

.075 (1.90)

REF.

.071 (1.80)
.059 (1.50)

.037 (0.95)

REF.

.122 (3.10)
.106 (2.70)

.057 (1.45)
.035 (0.90)

.006 (0.15)
.000 (0.00)



2002 Microchip TechnologyInc. DS21462B-page 11

10° MAX.

.024 (0.60)
.004 (0.10)

Dimensions: inches (mm)

.010 (0.25)
.004 (0.09)

TC74

NOTES:

DS21462B-page 12



2002 Microchip TechnologyInc.

TC74

SALES AND SUPPORT

Data Sheets

Products supportedby a preliminary Data Sheet may have an errata sheet describing minor operational differences and recom­mendedworkarounds.To determine if an erratasheet exists for a particulardevice, please contactoneof the following:

1. Your local Microchip sales office

2. The Microchip Corporate Literature Center U.S. FAX: [phone]

3. The Microchip Worldwide Site (www.microchip.com)
Pleasespecify which device, revision of silicon and Data Sheet (includeLiterature #) 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.



2002 Microchip TechnologyInc. DS21462B-page 13

TC74

NOTES:

DS21462B-page 14



2002 Microchip TechnologyInc.

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 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.

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Serialized Quick Turn Programming (SQTP) is a service mark
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All other trademarks mentioned herein are property of their
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© 2002, Microchip Technology Incorporated, Printed in the
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The Company’s quality system processes and
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

2002 Microchip TechnologyInc. DS21462B-page 15

8-bit MCUs, KEELOQ®code hopping

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Rocky Mountain

2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: [phone] Fax: [phone]

Atlanta

500 Sugar Mill Road, Suite 200B
Atlanta, GA 30350
Tel: [phone] Fax: [phone]

Boston

2 Lan Drive, Suite 120
Westford, MA 01886
Tel: [phone] Fax: [phone]

Chicago

333 Pierce Road, Suite 180
Itasca, IL 60143
Tel: [phone] Fax: [phone]

Dallas

4570 Westgrove Drive, Suite 160
Addison, TX 75001
Tel: [phone] Fax: [phone]

Detroit

Tri-Atria Office Building
32255 Northwestern Highway, Suite 190
Farmington Hills, MI 48334
Tel: [phone] Fax: [phone]

Kokomo

2767 S. Albright Road
Kokomo, Indiana 46902
Tel: [phone] Fax: [phone]

Los Angeles

18201 Von Karman, Suite 1090
Irvine, CA 92612
Tel: [phone] Fax: [phone]

New York

150 Motor Parkway, Suite 202
Hauppauge, NY 11788
Tel: [phone] Fax: [phone]

San Jose

Microchip Technology Inc.
2107 North First Street, Suite 590
San Jose, CA 95131
Tel: [phone] Fax: [phone]

Toronto

6285 Northam Drive, Suite 108
Mississauga, Ontario L4V 1X5, Canada
Tel: [phone] Fax: [phone]

ASIA/PACIFIC

Australia

Microchip Technology Australia Pty Ltd
Suite 22, 41 Rawson Street
Epping 2121, NSW
Australia
Tel: [phone] Fax: [phone]

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: [phone] Fax: [phone]

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: [phone] Fax: [phone]

China - Fuzhou

Microchip Technology Consulting (Shanghai)
Co., Ltd., Fuzhou Liaison Office
Unit 28F, World Trade Plaza
No. 71 Wusi Road
Fuzhou 350001, China
Tel: [phone] Fax: [phone]

China - Shanghai

Microchip Technology Consulting (Shanghai)
Co., Ltd.
Room 701, Bldg. B
Far East International Plaza
No. 317 Xian Xia Road
Shanghai, 200051
Tel: [phone] Fax: [phone]

China - Shenzhen

Microchip Technology Consulting (Shanghai)
Co., Ltd., Shenzhen Liaison Office
Rm. 1315, 13/F , Shenzhen Kerry Centre,
Renminnan Lu
Shenzhen 518001, China
Tel: [phone] Fax: [phone]

Hong Kong

Microchip Technology Hongkong Ltd.
Unit 901-6, Tower 2, Metroplaza
223 Hing Fong Road
Kwai Fong, N.T., Hong Kong
Tel: [phone] Fax: [phone]

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: [phone] Fax: [phone]

Japan

Microchip Technology Japan K.K.
Benex S-1 6F
3-18-20, Shinyokohama
Kohoku-Ku, Yokohama-shi
Kanagawa, 222-0033, Japan
Tel: [phone] Fax: [phone]

Korea

Microchip Technology Korea
168-1, Youngbo Bldg. 3 Floor
Samsung-Dong, Kangnam-Ku
Seoul, Korea 135-882
Tel: [phone] Fax: [phone]

Singapore

Microchip Technology Singapore Pte Ltd.
200 Middle Road
#07-02 Prime Centre
Singapore, 188980
Tel: [phone] Fax: [phone]

Taiwan

Microchip Technology Taiwan
11F-3, No. 207
Tung HuaNorth Road
Taipei, 105, Taiwan
Tel: [phone] Fax: [phone]

EUROPE

Denmark

Microchip Technology Nordic ApS
Regus Business Centre
Lautrup hoj 1-3
Ballerup DK-2750 Denmark
Tel: [phone] Fax: [phone]

France

Microchip Technology SARL
Parc d’Activite du Moulin de Massy
43 Rue du Saule Trapu
Batiment A - ler Etage
91300 Massy, France
Tel: [phone] Fax: [phone]

Germany

Microchip Technology GmbH
Gustav-Heinemann Ring 125
D-81739 Munich, Germany
Tel: [phone] Fax: [phone]

Italy

Microchip Technology SRL
Centro Direzionale Colleoni
Palazzo Taurus 1 V. Le Colleoni 1
20041 Agrate Brianza
Milan, Italy
Tel: [phone] Fax: [phone]

United Kingdom

Arizona Microchip Technology Ltd.
505 Eskdale Road
Winnersh Triangle
Wokingham
Berkshire, EnglandRG41 5TU
Tel: [phone] Fax: [phone]

03/01/02

DS21462B-page 16

*DS21462B*



2002 Microchip Technology Inc.