MICROCHIP TC74

TC74
Tiny Serial Digital Thermal Sensor
Features
General Description
•
•
•
•
The TC74 is a serially accessible digital temperature
sensor particularly suited for low cost and small formfactor applications. Temperature data is converted from
the onboard thermal sensing element and made
available as an 8-bit digital word.
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
• Low Power:
- 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
Communication with the TC74 is accomplished via a 2wire 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
200µA typ, (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
Internal Sensor
(Diode)
Package Type
Serial Port
Interface
TO-220
SDA
SCL
∆∑ Modulator
TC74
Control
Logic
1 2 3 4 5
NC
SDA
GND
SCLK
VDD
Temperature
Register
SOT-23
SDA
SCLK
5
4
TC74
1
2
3
NC
GND
VDD
 2002 Microchip Technology Inc.
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: *Default Address.
DS21462B-page 2
 2002 Microchip Technology Inc.
TC74
1.0
ELECTRICAL
CHARACTERISTICS
*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*
Supply Voltage (V DD) ............................................ +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
TC74 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: VDD = 3.3V or 5.0V (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
µA
VDD = 5.5V
Serial Port Inactive (Note 1)
IDD-STANDBY
Standby Supply Current
—
5
10
µA
VDD = 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)
—
—
V
Serial Port Interface
VIH
Logic Input High
0.8 x VDD
VIL
Logic Input Low
—
—
0.2 x VDD
V
VOL
SDA Output Low
—
—
—
—
0.4
0.6
V
V
CIN
Input Capacitance SDA, SCL
—
5
—
pF
ILEAK
I/O Leakage
-1
0.1
1
µA
Note
IOL = 3 mA
IOL = 6 mA (Note 3)
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 3
TC74
TC74 ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: VDD = 3.3V or 5.0V (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
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
µsec
tH(START)
START Condition Hold Time
4
—
—
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 Transition
4.7
—
—
µsec
Power-on Reset Delay
—
500
—
µsec
tPOR
Note
10% to 10%
VDD ≥ VPOR (Rising Edge)
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.
DS21462B-page 4
 2002 Microchip Technology Inc.
TC74
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
Pin Number
Pin Number
(5-Pin SOT-23) (5-Pin TO-220)
Symbol
Type
Description
1
1
NC
None
2
3
GND
Power
System Ground
3
5
VDD
Power
Power Supply Input
4
4
SCLK
Input
SMBus Serial Clock
5
2
SDA
Bi-directional
SMBus Serial Data
 2002 Microchip Technology Inc.
No Internal Connection.
DS21462B-page 5
TC74
Timing Diagrams
SMBUS READ Timing Diagram
A
B
IHIGH
ILOW
C
D
E
F
G
H
I
K
J
SCL
SDA
tSU(START) tH(START)
tSU(STOP)
tSU-Data
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
F = Acknowledge Bit Clocked into Master
G = MSB of Data Clocked into Master
H = LSB of Data Clocked into Master
tIDLE
I = Acknowledge Clock Pulse
J = STOP Condition
K = New START Condition
SMBUS Write Timing Diagram
B
A
ILOW
C
D
E
F
G
IHIGH
H
I
J
K
L
M
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
DS21462B-page 6
tSU-DATA
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
tH-DATA
tSU(STOP) tIDLE
J = Acknowledge Clocked into Master
K = Acknowledge Clock Pulse
L = STOP Condition, Data Executed by Slave
M = New START Condition
 2002 Microchip Technology Inc.
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
TABLE 3-1:
SHDN Bit
STANDBY MODE OPERATION
Operating Mode
0
Normal
1
Standby
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
Term
Transmitter
Receiver
Master
Slave
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:
 2002 Microchip Technology Inc.
SERIAL BUS CONVENTIONS
Explanation
The device sending data to the bus.
The device receiving data from the bus.
The device which controls the bus: initiating
transfers (START), generating the clock, and
terminating transfers. (STOP)
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.
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 summarizes this operation.
3.1.2
TABLE 3-2:
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
pulse for the ACK cycle.
Busy
Communication is not possible because the
bus is in use.
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 conditions.)
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 initiated by a START 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 called Acknowledge (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).
DS21462B-page 7
TC74
FIGURE 3-1:
SMBUS PROTOCOLS
Write Byte Format
S
Address
WR
ACK
Command
7 Bits
ACK
Data
8 Bits
Slave Address
ACK
P
8 Bits
Command Byte: selects
which register you are
writing to.
Data Byte: data goes
into the register set
by the command byte.
Read Byte Format
S Address
WR ACK Command
7 Bits
ACK S
Address
7 Bits
8 Bits
Slave Address
RD ACK
Command Byte: selects
which register you are
reading from.
Data
NACK P
8 Bits
Slave Address: repeated
due to change in dataflow direction.
Data Byte: reads from
the register set by the
command byte.
Receive Byte Format
S
Address
RD ACK
7 Bits
S = START Condition
P = STOP Condition
Shaded = Slave Transmission
3.3
Data
Nack
8 Bits
Data Byte: reads data from
the register commanded by
the last Read Byte or Write
Byte transmission.
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
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.
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
P
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.
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.
DS21462B-page 8
 2002 Microchip Technology Inc.
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 4-3:
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
MSB
X
X
X
X
X
X
LSB
In the temperature data registers, 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 temperature to binary value relationship are shown in Table 4-4.
TABLE 4-4:
TABLE 4-2:
BIT
POR
D[7]
0
CONFIGURATION REGISTER
(CONFIG); 8 BITS, READ/
WRITE)
FUNCTION
STANDBY
Switch
TYPE OPERATION
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
zero when read
N/A
N/A
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
DATA_RDY, SHDN
OPERATION LOGIC
DIAGRAM
VDD
-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
4.2
Register Set Summary
The TC74 register set is summarized in Table 4-5. All
registers are 8 bits wide.
DATA_RDY
TABLE 4-5:
SHDN
tconv
4.1
TEMPERATURE TO DIGITAL
VALUE CONVERSION (TEMP)
ACTUAL
TEMP.
*Note: DATA_RDY bit RESET at power-up and SHDN
enable.
FIGURE 4-1:
TEMPERATURE REGISTER
(TEMP)
tconv
Temperature Register (TEMP),
8 Bits, READ ONLY
The binary value (2’s complement format) in this register represents temperature of the onboard sensor
following a conversion cycle. The registers are
automatically updated in an alternating manner.
 2002 Microchip Technology Inc.
TC74 REGISTER SET
SUMMARY
NAME
DESCRIPTION
POR State
TEMP
Internal Sensor
Temp. (2’s
Complement)
0000 0000b*
READ WRITE
✓
CONFIG
CONFIG
Register
0000 0000b
✓
✓
*Note: The TEMP resigister will be immediately updated by
the A/D converter after the DATA_RDY Bit goes High.
DS21462B-page 9
TC74
5.0
PACKAGING INFORMATION
5.1
Package Marking Information
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
1 & 2 = part number code + temperature range and
voltage
TC74A0-5.0VCT
U0
TC74A1-5.0VCT
U1
3 = year and quarter code
TC74A2-5.0VCT
U2
4 = lot ID number
TC74A3-5.0VCT
U3
TC74A4-5.0VCT
U4
TC74A5-5.0VCT
U5
TC74A6-5.0VCT
U6
TC74A7-5.0VCT
U7
SOT-23
1
DS21462B-page 10
2
3
4
 2002 Microchip Technology Inc.
TC74
5.2
Taping Forms
Component Taping Orientation for 5-Pin SOT-23A (EIAJ SC-74A) Devices
User Direction of Feed
Device
Marking
W
PIN 1
P
Standard Reel Component Orientation
TR Suffix Device
(Mark Right Side Up)
Carrier Tape, Number of Components Per Reel and Reel Size
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
8 mm
4 mm
3000
7 in
5-Pin SOT-23A
5.3
Package Dimensions
SOT-23A-5
.075 (1.90)
REF.
.071 (1.80)
.059 (1.50)
.122 (3.10)
.098 (2.50)
.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)
.010 (0.25)
.004 (0.09)
10° MAX.
.024 (0.60)
.004 (0.10)
Dimensions: inches (mm)
 2002 Microchip Technology Inc.
DS21462B-page 11
TC74
NOTES:
DS21462B-page 12
 2002 Microchip Technology Inc.
TC74
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.
New Customer Notification System
Register on our web site (www.microchip.com/cn) to receive the most current information on our products.
 2002 Microchip Technology Inc.
DS21462B-page 13
TC74
NOTES:
DS21462B-page 14
 2002 Microchip Technology Inc.
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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Solutions Company are registered trademarks of Microchip Technology Incorporated 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.
 2002 Microchip Technology Inc.
DS21462B-page 15
WORLDWIDE SALES AND SERVICE
AMERICAS
ASIA/PACIFIC
Japan
Corporate Office
Australia
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
Microchip Technology Australia Pty Ltd
Suite 22, 41 Rawson Street
Epping 2121, NSW
Australia
Tel: 61-2-9868-6733 Fax: 61-2-9868-6755
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
Rocky Mountain
China - Beijing
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7966 Fax: 480-792-7456
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
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
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
150 Motor Parkway, Suite 202
Hauppauge, NY 11788
Tel: 631-273-5305 Fax: 631-273-5335
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
San Jose
Hong Kong
Microchip Technology Inc.
2107 North First Street, Suite 590
San Jose, CA 95131
Tel: 408-436-7950 Fax: 408-436-7955
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
New York
Toronto
6285 Northam Drive, Suite 108
Mississauga, Ontario L4V 1X5, Canada
Tel: 905-673-0699 Fax: 905-673-6509
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
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
*DS21462B*
DS21462B-page 16
 2002 Microchip Technology Inc.