2002 Microchip Technology Inc.

DS21394B-page 1

TC14433/A

Features

· Accuracy: ±0.05% of Reading ±1 Count

· Two Voltage Ranges: 1.999V and 199.9 mV

· Up to 25 Conversions Per Second

· Z

> 1000M Ohms

· Single Positive Voltage Reference

· Auto-Polarity and Auto-Zero

· Overrange and Underrange Signals Available

· Operates in Auto-Ranging Circuits

· Uses On-Chip System Clock or External Clock

· Wide Supply Range: ±4.5V to ±8V

Applications

· Portable Instruments

· Digital Voltmeters

· Digital Panel Meters

· Digital Scales

· Digital Thermometers

· Remote A/D Sensing Systems

· MPU Systems

Device Selection Table

Package Type

Part Number

Package

Temperature

Range

TC14433AEJG

24-Pin CERDIP

(Wide)

-40°C to +85°C

TC14433AELI

28-Pin PLCC

-40°C to +85°C

TC14433AEPG

24-Pin PDIP

(Wide)

-40°C to +85°C

TC14433COG

24-Pin SOIC

(Wide)

0°C to +70°C

TC14433EJG

24-Pin CERDIP

(Wide)

-40°C to +85°C

TC14433ELI

28-Pin PLCC

-40°C to +85°C

TC14433EPG

24-Pin PDIP

(Wide)

-40°C to +85°C

24 V

EOC

CLK0

CLK1

REF

TC14433/A

24-Pin PDIP (Wide)

24-Pin CERDIP (Wide)

24-Pin SOIC (Wide)

REF

CO1

R1/C

EOC

CLK0

CLK1

TC14433/A

12 13 14 15

17 18

27 26

28-Pin PLCC

Note

1: NC = No internal connection (In 28-Pin PLCC).
2: 24-Pin SOIC (Wide) package, only for

TC14433 device.

3-1/2 Digit, Analog-to-Digital Converter

TC14433/A

DS21394B-page 2

2002 Microchip Technology Inc.

General Description

The TC14433 is a low power, high performance,
monolithic CMOS 3-1/2 digit A/D converter. The
TC14433 combines both analog and digital circuits on
a single IC, thus minimizing the number of external
components.

This dual slope A/D converter provides automatic
polarity and zero correction with the addition of two
external resistors and two capacitors. The full scale
voltage range of this ratiometric IC extends from 199.9
millivolts to 1.999 volts. The TC14433 can operate over
a wide range of power supply voltages, including
batteries and standard 5-volt supplies.

The TC14433A features improved performance over
the industry standard TC14433. Rollover, which is the
measurement

identical

positive

and

negative

signals, is specified to have the same reading within
one count for the TC14433A. Power consumption of
the TC14433A is typically 4mW, approximately one-
half that of the industry standard TC14433.

The TC14433/A is available in 24-Pin PDIP, 24-Pin
CERDIP, 24-Pin SOIC (TC14433 device only), and
28-Pin PLCC packages.

Typical Application

3
1

4
5
6

7
8

23
22
21
20

15 19 18 17 16

11 10 2 12 24

4
2
3
5

10
11
12
13
14
15

7
6
5
4
3
2
1

10
11
12
13
14
15
16

0.1

µF**

0.1

µF

0.1

µF

0.1

µF**

= 470k

for 2V Range

= 27k

for 200mV Range

**Mylar Capacitor

20k

D
C

TC14433

Q
Q

D
C

+5V

-5V

+5V

Segment

Resistors

150

(7)

+5V

Q
Q

-5V

Minus Sign

200

51k

6 7

+5V

-5V

MPS-A12

(4)

Common
Anode Led
Display

MPS-A12

300k

0.1

14013B

5
3

9
11

1
2

13
12

f g e d c b a

+5V

µF

DS4

DS3

DS2

DS1

-5V

MCP1525

4543B

1413

OUT

Plus Sign

110

2002 Microchip Technology Inc.

DS21394B-page 3

TC14433/A

1.0

ELECTRICAL
CHARACTERISTICS

Absolute Maximum Ratings*

Supply Voltage (V

) ................... -0.5V to +18V

Voltage on Any Pin:

Reference to V

.....................-0.5V to (V

+ 0.5)

DC Current, Any Pin: ........................................ ±10mA

Power Dissipation (T

70°C):

Plastic PLCC ................................................. 1.0W

Plastic PDIP.................................................. 940W

SOIC ............................................................. 940W

CERDIP ....................................................... 1.45W

Operating Temperature Range ............... 0°C to +70°C

Storage Temperature Range .............. -65°C to +160°C

*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.

TC14433/A ELECTRICAL SPECIFICATIONS

Electrical Characteristics: V

= +5V, V

= -5V, C

= 0.1

F, (Mylar), C

= 0.1

F, R

= 300k

, R

= 470k

@ V

REF

= 2V,

= 27k

@ V

REF

= 200mV, unless otherwise specified.

Symbol

Parameter

Min

Typ

Max

Min

Typ

Max

Units

Test Conditions

Analog Input

= +25°C

SYE

Rollover Error (Positive) and
Negative Full Scale
Symmetry

-1

Counts 200mV Full Scale

-V

= +V

Linearity Output Reading
(Note 1)

-0.05

+0.05

%rdg

REF

= 2V

-1 count

+1 count

%rdg

REF

= 200mV

SOR

Stability Output Reading
(Note 2)

LSD

= 1.99V,

REF

= 2V

LSD

= 199mV,

REF

= 200mV

ZOR

Zero Output Reading

LSD

= 0V, V

REF

= 2V

Bias Current: Analog Input

Reference Input

Analog Ground

±20

±100

±20

±100

±20

±100

CMRR

Common mode Rejection

= 1.4V, V

REF

= 2V,

= 32kHz

Note

Accuracy - The accuracy of the meter at full scale is the accuracy of the setting of the reference voltage. Zero is
recalculated during each conversion cycle. The meaningful specification is linearity. In other words, the deviation from
correct reading for all inputs other than positive full scale and zero is defined as the linearity specification.

The LSD stability for 200mV scale is defined as the range that the LSD will occupy 95% of the time.

Pin numbers refer to 24-pin PDIP.

TC14433/A

DS21394B-page 4

2002 Microchip Technology Inc.

Digital

Output Voltage
(Pins 14 to 23) (Note 3)

0.05

= 0 V, "0" Level

-5

-4.95

= -5V, "0" Level

Output Voltage
(Pins 14 to 23) (Note 3)

4.95

= 0V, "1" Level

4.95

= -5V, "1" Level

Output Current
(Pins 14 to 23)

-0.2

-0.36

-0.14

= 0V, V

= 4.6V

Source

- 0.5

-0.9

-0.35

= -5V, V

= 5V

Source

Output Current
(Pins 14 to 23)

0.51

0.88

0.36

= 0V, V

= 0.4V

Sink

1.3

2.25

0.9

= -5V,

= -4.5V Sink

CLK

Clock Frequency

kHz

= 300k

Input Current -DU

±0.00001

±0.3

±1

Power

Quiescent Current: 14433A:

to V

, I

= 0

0.4

3.7

= 5, V

= -5

1.4

7.4

= 8, V

= -8

Quiescent Current: 14433:

to V

, I

= 0

0.9

3.7

= 5, V

= -5

1.8

7.4

= 8, V

= -8

PSRR

Supply Rejection

0.5

mV/V

to V

, I

= 0,

REF

= 2V,

= 5, V

= -5

TC14433/A ELECTRICAL SPECIFICATIONS (CONTINUED)

Electrical Characteristics: V

= +5V, V

= -5V, C

= 0.1

F, (Mylar), C

= 0.1

F, R

= 300k

, R

= 470k

@ V

REF

= 2V,

= 27k

@ V

REF

= 200mV, unless otherwise specified.

Symbol

Parameter

Min

Typ

Max

Min

Typ

Max

Units

Test Conditions

Note

The LSD stability for 200mV scale is defined as the range that the LSD will occupy 95% of the time.

Pin numbers refer to 24-pin PDIP.

2002 Microchip Technology Inc.

DS21394B-page 5

TC14433/A

2.0

PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 2.0.

TABLE 2-1:

PIN FUNCTION TABLE

Pin No.

(24-Pin PDIP)

(24-Pin CERDIP)

(24-Pin SOIC)

Pin No.

(28-Pin PLCC)

Symbol

Description

This is the analog ground. It has a high input impedance. The pin determines the
reference level for the unknown input voltage (V

) and the reference voltage (V

REF

Reference voltage - Full scale output is equal to the voltage applied to V

REF

Therefore, full scale voltage of 1.999V requires 2V reference and 199.9mV full scale
requires a 200mV reference. V

REF

functions as system reset also. When switched

to V

, the system is reset to the beginning of the conversion cycle.

The unknown input voltage (V

) is measured as a ratio of the reference voltage

REF

) in a rationetric A/D conversion.

This pin is for external components used for the integration function in the dual
slope conversion. Typical values are 0.1

F (mylar) capacitor for C

= 470k

(resistor) for 2V full scale.

= 27k

(resistor) for 200mV full scale. Clock frequency of 66kHz gives 250msec

conversion time.

These pins are used for connecting the offset correction capacitor.
The recommended value is 0.1

Display update input pin. When DU is connected to the EOC output, every
conversion is displayed. New data will be strobed into the output latches during the
conversion cycle if a positive edge is received on DU, prior to the ramp down cycle.
When this pin is driven from an external source, the voltage should be referenced
to V

CLK

Clock input pins. The TC14433 has its own oscillator system clock. Connecting a
single resistor between CLK

and CLK

sets the clock frequency.

CLK

A crystal or OC circuit may be inserted in lieu of a resistor for improved CLK

, the

clock input, can be driven from an external clock source, which need only have
standard CMOS output drive. This pin is referenced to V

for external clock inputs.

A 300k

resistor yields a clock frequency of about 66kHz. See Section 5.0 Typical

Characteristics. (Also see Figure 4-3 for alternate circuits.)

Negative power current. Connection pin for the most negative supply. Please note
the current for the output drive circuit is returned through V

. Typical supply

current is 0.8mA.

Negative power supply for output circuitry. This pin sets the low voltage level for the
output pins (BCD, Digit Selects, EOC, OR). When connected to analog ground, the
output voltage is from analog ground to V

. If connected to V

, the output swing

is from V

to V

. The recommended operating range for V

is between the

-3 volts and V

EOC

End of conversion output generates a pulse at the end of each conversion cycle.
This generated pulse width is equal to one half the period of the system clock.

Overrange pin. Normally this pin is set high. When V

exceeds V

REF

the OR is low.

Digit select pin. The digit select output goes high when the respective digit is
selected. The MSD (1/2 digit turns on immediately after an EOC pulse).

The remaining digits turn on in sequence from MSD to LSD.

To ensure that the BCD data has settled, an inter digit blanking time of two clock
periods is included.

Clock frequency divided by 80 equals multiplex rate. For example, a system clock of
60kHz gives a multiplex rate of 0.8kHz.

See Figure 4-4 for digit select timing diagram.

2002 Microchip Technology Inc.

DS21394B-page 7

TC14433/A

3.0

DETAILED DESCRIPTION

The TC14433 CMOS IC becomes a modified dual-
slope A/D with a minimum of external components.
This IC has the customary CMOS digital logic circuitry,
as well as CMOS analog circuitry. It provides the user
with digital functions such as (counters, latches,
multiplexers),

and

analog

functions

such

(operational amplifiers and comparators) on a single
chip. Refer to the Functional Block diagram, Figure 3-3

Features of the TC14433/A include auto-zero, high
input impedances and

auto-polarity.

Low

power

consumption and a wide range of power supply volt-
ages are also advantages of this CMOS device. The
system's auto-zero function compensates for the offset
voltage of the internal amplifiers and comparators. In
this "ratiometric system," the output reading is the ratio
of the unknown voltage to the reference voltage, where
a ratio of 1 is equal to the maximum count of 1999. It
takes approximately 16,000 clock periods to complete
one conversion cycle. Each conversion cycle may be
divided into 6 segments. Figure 3-1 shows the conver-
sion cycle in 6 segments for both positive and negative
inputs.

FIGURE 3-1:

INTEGRATOR
WAVEFORMS AT PIN 6

Segment 1 - The offset capacitor (C

), which compen-

sates for the input offset voltages of the buffer and inte-
grator amplifiers, is charged during this period.
However, the integrator capacitor is shorted. This
segment requires 4000 clock periods.

Segment 2 - During this segment, the integrator output
decreases to the comparator threshold voltage. At this
time, a number of counts equivalent to the input offset
voltage of the comparator is stored in the offset latches
for later use in the auto-zero process. The time for this
segment is variable and less than 800 clock periods.

Segment 3 - This segment of the conversion cycle is
the same as Segment 1.

Segment 4 - Segment 4 is an up going ramp cycle with
the unknown input voltage (V

as the input to the

integrator.

Figure 4-2

shows

the

equivalent

configuration of the analog section of the TC14433.
The actual configuration of the analog section is
dependent upon the polarity of the input voltage during
the previous conversion cycle.

FIGURE 3-2:

EQUIVALENT CIRCUIT
DIAGRAMS OF THE
ANALOG SECTION
DURING SEGMENT 4 OF
THE TIMING CYCLE

Segment 5 - This segment is a down-going ramp
period with the reference voltage as the input to the
integrator. Segment 5 of the conversion cycle has a
time equal to the number of counts stored in the offset
storage latches during Segment 2. As a result, the sys-
tem zeros automatically.

Segment 6 - This is an extension of Segment 5. The
time period for this portion is 4000 clock periods. The
results of the A/D conversion cycle are determined in
this portion of the conversion cycle.

Start

Typical
Positive
Input Voltage

Typical
Negative
Input Voltage

Time
Segment
Number

End

Comparator

Buffer

Integrator

2002 Microchip Technology Inc.

DS21394B-page 9

TC14433/A

4.0

TYPICAL APPLICATIONS

The Typical Application circuit is an example of a 3-1/2
digit voltmeter using the TC14433 with Common-
anode displays. This system requires a 2.5V reference.
Full scale may be adjusted to 1.999V or 199.9 mV.
Input overrange is indicated by flashing a display. This
display uses LEDs with common anode digit lines.
Power supply for this system is shown as a dual ±5V
supply; however, the TC14433 will operate over a wide
voltage range

The circuit in Figure 4-1 shows a 3-1/2 digit LCD
voltmeter. The 14024B provides the low frequency
square wave signal drive to the LCD backplane. Dual
power supplies are shown here; however, one supply
may be used when V

is connected to V

. In this

case, V

must be at least 2.8V above V

When only segments b and c of the decoder are con-
nected to the 1/2 digit of the display, 4, 0, 7 and 3
appear as 1.

The overrange indication (Q

= 0 and Q

= 1) occurs

when the count is greater than 1999; (e.g., 1.999V for
a reference of 2V) The underrange indication, useful for
auto-ranging circuits, occurs when the count is less
than 180; (e.g., 0.180V for a reference of 2V).

TABLE 4-1:

TRUTH TABLE

Figure 4-2 is an example of a 3-1/2 digit LED voltmeter
with a minimum of external components, (only 11
additional components). In this circuit, the 14511B
provides the segment drive and the 75492 or 1413
provides sink for digit current. Display is blanked during
the overrange condition.

Note:

If the most significant digit is connected to
a display other than a "1" only, such as a
full digit display, segments other than b
and c must be disconnected. The BCD to
7-segment decoder must blank on BCD
inputs 1010 to 1111. See Table 4-1

Coded

Condition

of MSD

BDC to 7-Segment

Decoding

Blank

-0

+0 UR

-0 UR

4 1

0 1

7 1

3 1

Hook up

only segments

b and c to MSD

-1

+1 OR

-1 OR

Note 1:

- 1/2 digit, low for "1", high for "0".

- Polarity: "1" = positive, "0" = negative.

- Out of range condition exists if Q

= 1.

When used in conjunction with Q

, the type of

out of range condition is indicated; i.e., Q

= 0

OR or Q

= 1

UR.

2002 Microchip Technology Inc.

DS21394B-page 11

TC14433/A

FIGURE 4-2:

3-1/2 DIGIT LED VOLTMETER WITH LOW COMPONENT COUNT USING
COMMON CATHODE DISPLAYS

FIGURE 4-3:

ALTERNATE OSCILLATOR CIRCUITS

CLK1
CLK0

TC14433

Input

300k

Resitor Network

or Individual

Resistor*

+5V

Minus

Control

+5V

Common
Cathode
Led Display

75492

1413*

Digit Drivers

EE*

(Minus)

Alternate Overrange Circuit

with Separated LED

+5V

1/6

1/7

1413

75492

A
B
C
D
LT
LE

I4511B

+5V

OUT

µF

20k

MCP1525

470k 0.1

µF 0.1µF

/C C

DU
EOE

REF

a
b
c
d
e
f
g

Note

For V

REF

= 2000V; V: 1.999V full scale.

For V

REF

= 200mV; V: 199.9mV full scale (change 470k to R = 27k and decimal point position.

Peak digit current for an eight displayed is 7 times the segment current:
*To increase segment current capability, add two 75491 ICs between 14511B and resistor network.
The use of the 1413 as digit driver increases digit current capability over the 75492.
**V can range between -2.8V and -11V.

(B) LC Oscillator Circuit

For L = 5mH and C = 0.01

µF, f

32kHz

10pF < C

and C

< 200pF

TC14433

CLK

18M

47k

(A) Crystal Oscillator Circuit

f =

2/LC

2002 Microchip Technology Inc.

DS21394B-page 13

TC14433/A

5.0

TYPICAL CHARACTERISTICS

Note:

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.

ROLLOVER ERROR (IN LSD)

AT FULL SCALE

(PLUSE COUNT LESS MINUS COUNT)

-3

-2

-1

-4

-3

-2

-1

Typical Rollover Error vs. Power Supply Skew

I-IV

I) - SUPPLY VOLTAGE SKEW (V)

Note: Rollover Error is the Difference in Output

Reading for the same Analog Input Switched

from Positive to Negative.

-40

°C

+25

°C

+85

°C

Typical N-Channel Sink Current at V

 V

= 5 Volts

- SINK CURRENT (mA)

- DRAIN TO SOURCE VOLTAGE (V

)

10k

100k

CLOCK FREQUENCY

16,400

±1.5%

CONVERSION RATE =

Typical Clock Frequency vs. Resistor (R

)

CLK

- CLOCK FREQUENCY (Hz)

- CLOCK FREQUENCY RESISTOR

Note: ±5% Typical Variation over

Supply Voltage Range

±4.5V

±8V

CLOCK FREQUENCY

MULTIPLEX RATE =

Typical Quiescent Power Supply Current vs.Temp.

- QUIESCENT CURRENT (mA)

- TEMPERATURE (

°C)

-40

-20

100

= -8V

= +8V

= -5V

= +5V

-1

-2

-3

-1

-2

-3

-4

-5

Typical P-Channel Sink Current at V

 V

= 5 Volts

- SINK CURRENT (mA)

- DRAIN TO SOURCE VOLTAGE (V

)

-40

°C

+25

°C

+85

°C

-1

-2

-3

-4

-40

-20

Normalized at 25

°C

±5V Supply

±8V Supply

CLK

- CLOCK FREQUENCY

(% CHANGE)

Typical % Change fo Clock Frequency vs. Temp.

CLOCK FREQUENCY

16,400

±1.5%

CONVERSION RATE =

CLOCK FREQUENCY

MULTIPLEX RATE =

- TEMPERATURE (

°C)

TC14433/A

DS21394B-page 14

2002 Microchip Technology Inc.

6.0

PACKAGING INFORMATION

6.1

Package Marking Information

Package marking data not available at this time.

6.2

Taping Form

Component Taping Orientation for 24-Pin SOIC (Wide) Devices

PIN 1

User Direction of Feed

Standard Reel Component Orientation
for TR Suffix Device

Package

Carrier Width (W)

Pitch (P)

Part Per Full Reel

Reel Size

24-Pin SOIC (W)

24 mm

12 mm

1000

13 in

Carrier Tape, Number of Components Per Reel and Reel Size

Component Taping Orientation for 28-Pin PLCC Devices

Standard Reel Component Orientation
for TR Suffix Device

User Direction of Feed

Package

Carrier Width (W)

Pitch (P)

Part Per Full Reel

Reel Size

28-Pin PLCC

24 mm

16 mm

750

13 in

Carrier Tape, Number of Components Per Reel and Reel Size

PIN 1

2002 Microchip Technology Inc.

DS21394B-page 19

TC14433/A

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,
K

, microID,

MPLAB, PIC, PICmicro, PICMASTER,

PICSTART, PRO MATE, SEEVAL and The Embedded Control
Solutions Company are registered trademarks of Microchip Tech-
nology 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, MXLAB, 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.

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, K

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.

DS21394B-page 20

2002 Microchip Technology Inc.

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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: 86-28-86766200 Fax: 86-28-86766599

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

China - Hong Kong SAR

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

Microchip Ltd.
505 Eskdale Road
Winnersh Triangle
Wokingham
Berkshire, England RG41 5TU
Tel: 44 118 921 5869 Fax: 44-118 921-5820

05/01/02

*DS21394B*

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