Microchip TC1321EOA (73-421-08)

Microchip TC1321EOA (73-421-08)

2002-04-19

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73-421-08 TC1321EOA 10-bit DA indtem

73-421-16 TC1321EUA 10-bit DA indtem

TC1321

10-Bit Digital-to-Analog Converter with Two-Wire Interface

FEATURES

10-Bit Digital-Analog Converter

8-Pin SOIC and 8-Pin MSOP Packages

2.7–5.5V Single-Supply Operation

Simple SMBus/I

2

C Serial Interface

Low Power - 0.35mA Operation, 0.5

µ

A Shutdown

Monotonicity Ensured

TYPICAL APPLICATIONS

Programmable Voltage Sources

Digital-Controlled Amplifiers/Attenuators

Process Monitoring and Control

Microprocessor- controlled systems

PIN CONFIGURATION

8-Pin MSOP

V

REF

1

SDA

2

SCL

GND

3

4

TC1321

6

5

8

7

V

DD

DAC-OUT

NC

VOUT

V

REF

SDA

SCL

1

2

3

GND

4

8-Pin SOIC (Narrow

)

TC1321

8

V

DD

7

DAC-OUT

6

NC

5

VOUT

GENERAL DESCRIPTION

The TC1321 is a serially accessible 10-bit voltage output digital-to-analog converter (DAC). The DAC produces an output voltage that ranges from ground to an externally supplied reference voltage. It operates from a single power supply that can range from 2.7V to 5.5V, making it ideal for a wide range of applications. Built into the part is a power-on reset function that ensures that the device starts at a known condition.

Communication with the TC1321 is accomplished via a simple 2-wire SMBus/I

2

C compatible serial port with the

TC1321 acting as a slave only device. The host can enable the

SHDN bit in the CONFIG register to activate the low-power standby mode.

ORDERING INFORMATION

Part No.

TC1321EOA

TC1321EUA

Package Temp. Range

8-Pin SOIC (Narrow) –40

°

C to +85

°

C

8-Pin MSOP –40

°

C to +85

°

C

FUNCTIONAL BLOCK DIAGRAM

V

DD

Configuration Register

TC1321

SDA

SCL

Serial Port

Interface

Control

DAC–OUT

Data Register

DAC

V

OUT

V

REF

GND

APPLICATIONS DRAWING

V

IN

(8)

V

DD

V

REF

(1)

DAC

V

OUT

(5)

+

V

ADJUST

Serial Port

(3)

(2)

SCLK SDAT

Micro Processor

TC1321

© 2001 Microchip Technology Inc. DS21387A

TC1321-1 6/23/00

10-Bit Digital-to-Analog Converter with Two-Wire Interface

TC1321

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage (V

DD

) ................................................. +6V

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

DD

+ 0.3V)

Operating Temperature (T

A

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

Storage Temperature (T

STG

) ................. – 65

°

C to +150

°

C

Current On Any Pin ...............................................

±

50 mA

Package Thermal Resistance (

θ

JA

) .................... 330

°

C/W

*Static-sensitive device. Unused devices must be stored in conductive material. Protect devices from static discharge and static fields. 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 operational sections of the specifications is not implied.

Exposure to Absolute Maximum Rating Conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS:

V

DD

= 2.7V to 5.5V, – 40

°

C

T

A

+85

°

C, unless otherwise noted.

Test Conditions Min Typ Max Symbol Parameter

Power Supply

V

DD

I

DD

Supply Voltage

Operating Current

2.7

0.35

5.5

0.5

I

DD-STANDBY

Standby Supply Current

V

DD

= 5.5V, V

REF

= 1.2V

Serial Port Inactive (Note 1)

V

DD

= 3.3V

Serial Port Inactive (Note 1)

— 0.1

1

Unit

V mA

µ

A

STATIC PERFORMANCE–ANALOG SECTION:

(V

DD

= 2.7V to 5.5V, V

REF

= 1.2V, –40

°

C

T

A

85

°

C, unless otherwise noted.)

Symbol

INL

FSE

Parameter

Resolution

Integral Non-Linearity at FS, T

A

= +25

°

C

Full Scale Error

Differential Non-Linearity, T

A

= +25

°

C

Offset Error at V

OUT

Test Conditions

(Note 2)

DNL

V

OS

All Codes (Note 2)

(Note 2)

TCV

OS

PSRR

Offset Error Tempco at V

OUT

Power Supply Rejection Ratio V

DD

at DC

V

REF

I

REF

V

SW

R

OUT

I

OUT

Voltage Reference Range

Reference Input Leakage Current

Voltage Swing

Output Resistance @ V

OUT

Output Current (Source or Sink)

V

REF

R

OUT

(V

DD

– 1.2V)

(ohmic)

I

SC

Output Short-Circuit Current

V

DD

= 5.5V

Source

Sink

NOTES: 1. SDA and SCL must be connected to V

2. Measured at V

OUT

DD

or GND.

50mV refered to GND to avoid output buffer clipping.

Typ

±

0.3

10

80

5.0

2

30

20

-1

0

0

Min

Max

10

±

4.0

±

3

+2

±

8

V

DD

– 1.2

±

1.0

V

REF

50

50

Unit

Bits

LSB

%FS

LSB mV

µ v/

°

C dB

V

µ

A

V

Ω mA mA mA

2 © 2001 Microchip Technology Inc. DS21387A

TC1321-1 6/23/00

10-Bit Digital-to-Analog Converter with Two-Wire Interface

TC1321

DYNAMIC PERFORMANCE:

(V

DD

= 2.7V to 5.5V, –40

°

C

T

A

85

°

C, unless otherwise noted.)

Test Conditions Symbol

SR t

SETTLE t

WU

Parameter

Voltage Output Slew Rate

Output Voltage Full Scale Settling Time

Wake-up Time

Digital Feedthrough and Crosstalk

SDA = V

DD

, SCL = 100kHz

Min

Typ

0.8

10

20

5

Max

Unit

V/

µ s

µ sec

µ s nV-s

SERIAL PORT INTERFACE:

(V

DD

= 2.7V to 5.5V, –40

°

C

T

A

85

°

C, unless otherwise noted.)

Test Conditions Symbol

V

IH

V

IL

V

OL

C

IN

I

LEAK

Parameter

Logic Input High

Logic Input Low

SDA Output Low

Input Capacitance SDA, SCL

I/O Leakage

I

OL

= 3 mA (Sinking Current)

I

OL

= 6 mA

Min

2.4

Typ

5

Max

V

DD

0.6

0.4

0.6

±

1.0

SERIAL PORT AC TIMING:

V

DD

= 2.7V to 5.5V, –40

°

C

(T

A

= T

J

)

85

°

C; C

L

= 80pF, unless otherwise noted.)

Symbol

f

SMB t

IDLE t

H(START) t

SU(START) t

SU(STOP) t

H-DATA t

SU-DATA t

LOW t

HIGH t

F t

R t

POR

Parameter

SMBus Clock Frequency

Test Conditions

Bus Free Time Prior to New Transition

Start Condition Hold Time

Start Condition Setup Time 90% SCL to 10% SDA

(for repeated Start Condition)

Stop Condition Setup Time

Data In Hold Time

Data In Setup Time

Low Clock Period

High Clock Period

SMBus Fall Time

SMBus Rise Time

Power-On Reset Delay

10% to 10%

90% to 90%

90% to 10%

10% to 90%

V

DD

V

POR

(Rising Edge)

4

4.0

100

100

4.7

Min

10

4.7

4.0

4.7

500

Typ

Max

100

300

1000

Unit

kHz

µ sec

µ sec

µ sec

µ sec nsec nsec

µ sec

µ sec nsec nsec

µ sec

Unit

V

V

V

V pF

µ

A

PIN DESCRIPTION

Pin No.

Symbol

1

4

5

2

3

6

7

8

V

REF

SDA

SCL

GND

VOUT

NC

DAC_OUT

V

DD

© 2001 Microchip Technology Inc. DS21387A

Type

Input

Bi-Directional

Input

Input

Output

None

Output

Power

3

Description

Voltage Reference Input

SMBUS Serial Data

SMBUS Serial Clock

System Ground

Buffered DAC Output

Not Connected

Unbuffered DAC Output

Positive Power Supply Input

TC1321-1 6/23/00

10-Bit Digital-to-Analog Converter with Two-Wire Interface

TC1321

TIMING DIAGRAMS

SMBUS Write Timing Diagram

A

ILOW

B

IHIGH

C

SCL

SDA

D E F G H

I

J

K L

M 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 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

J = Acknowledge Clocked into Master

K = Acknowledge Clock Pulse

L = Stop Condition, Data Executed by Slave

M = New Start Condition tSU(STOP) tIDLE

SMBUS READ Timing Diagram

A

ILOW

B

IHIGH

C

SCL

SDA

D E F G 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 tSU-DATA

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

H

I J K tSU(STOP) tIDLE

4 © 2001 Microchip Technology Inc. DS21387A

TC1321-1 6/23/00

10-Bit Digital-to-Analog Converter with Two-Wire Interface

TC1321

PIN DESCRIPTION

V

REF

Input. Voltage Reference Input can range from 0V to

1.2V below V

DD

.

SDA

Bi-directional. Serial data is transferred on the SMBus in both directions using this pin. See System Management

Bus Specification rev. 1.0 for timing diagrams.

SCL

Input. SMBus serial clock. Clocks data into and out of the TC1321. See System Management Bus Specification rev. 1.0 for timing diagrams.

GND

Input. Ground return for all TC1321 functions.

VOUT

Output. Buffered DAC output voltage. This voltage is a function of the reference voltage and the contents of the

DATA register. See Functional Description section.

DAC_OUT

Output. Unbuffered DAC output voltage. This voltage is a function of the reference voltage and the contents of the

DATA register. However, since it is unbuffered, care must be taken that the pin is connected only to a high impedance node.

V

DD

Input. Positive power supply input. See electrical specifications.

Reference Input

The reference pin, V

REF

, is a buffered high impedance input and because of this the load regulation of the reference source need only to be able to tolerate leakage levels of current (less than 1

µ

A). V

REF

accepts a voltage range from 0 to (V

DD

– 1.2V). Input capacitance is typically 10 pF.

Output Amplifier

The TC1321 DAC output is buffered with an internal unity-gain rail-to-rail input/output amplifier with a typical slew rate of 0.8V/

µ sec. Maximum full-scale transition settling time is 10

µ sec to within

±

1/2 LSB when loaded with 1k

Ω in parallel with 100pF.

Standby Mode

The TC1321 allows the host to put it into a low power

(I

DD

= 0.5

µ

A, typical) Standby mode. In this mode, the D/A convertion is halted. The SMBus port operates normally.

Standby mode is enabled by setting the SHDN bit in the

CONFIG register. The table below summarizes this operation.

Standby Mode Operation

SHDN Bit Operating Mode

0

1

Normal

Standby

DETAILED DESCRIPTION

The TC1321 is a monolithic 10-bit digital-to-analog converter that is designed to operate from a single supply that can range from 2.7V to 5.5V. The DAC consists of a data register (DATA), a configuration register (CONF), and a current output amplifier. The TC1321 uses an external reference which also determines the maximum output voltage.

The TC1321 uses a current-steering DAC based on an array of matched current sources which goes into the precision resistor that converts the contents of the Data

Register and V

REF

into an output voltage, V

OUT

given by:

V

OUT

= V

REF

(DATA/ 1024)

© 2001 Microchip Technology Inc. DS21387A 5

SMBus Slave Address

The TC1321 is internally programmed to have a default

SMBus address value of 1001 000b. Seven other addresses are available by custom order (contact factory).

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 TC1321. The following conventions are used in this bus architecture:

TC1321-1 6/23/00

10-Bit Digital-to-Analog Converter with Two-Wire Interface

TC1321

Write 1 Byte Format

S

ADDRESS

7 Bits

Slave Address

Write 2 Byte Format

S

ADDRESS

7 Bits

Slave Address

WR

WR

ACK

COMMAND

8 Bits

ACK

Command Byte: selects which register you are writing to.

DATA

ACK

8 Bits

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

P

ACK

COMMAND

8 Bits

ACK

Command Byte: selects which register you are writing to.

DATA

ACK

8 Bits

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

DATA

ACK

P

8 Bits

Read 1 Byte Format

S

ADDRESS WR

7 Bits

Slave Address

ACK

COMMAND

8 Bits

ACK

Command Byte: selects which register you are reading from.

S ADDRESS RD ACK

DATA

NACK P

7 Bits

8 Bits

Slave Address: repeated due to change in dataflow direction.

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

Read 2 Byte Format

S ADDRESS WR

7 Bits

Slave Address

ACK COMMAND

8 Bits

ACK

Command Byte: selects which register you are reading from.

S ADDRESS RD ACK

DATA

ACK

7 Bits

Slave Address: repeated due to change in dataflow direction.

8 Bits

DATA

8 Bits

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

NACK P

Receive 1 Byte Format

S ADDRESS RD ACK DATA NACK

7 Bits

8 Bits

P

S = Start Condition

P = Stop Condition

Shaded = Slave Transmission

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

Byte transmission.

Receive 1 Byte Format

S ADDRESS RD ACK DATA

7 Bits

8 Bits

ACK

S = Start Condition

P = Stop Condition

Shaded = Slave Transmission

DATA

8 Bits

NACK

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

Byte transmission.

P

Figure 1. SMBus Protocols

6 © 2001 Microchip Technology Inc. DS21387A

TC1321-1 6/23/00

10-Bit Digital-to-Analog Converter with Two-Wire Interface

TC1321

TC1321 Serial Bus Conventions

TERM EXPLANATION

Transmitter The device sending data to the bus.

Receiver The device receiving data from the bus.

Master

Slave

Start

The device which controls the bus: initiating transfers (START), generating the clock, and terminating transfers. (STOP)

The device addressed by the master.

Stop

A unique condition signaling the beginning of a transfer indicated by SDA falling (High –Low) while SCL is high.

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 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 TC1321 always operates as a Slave. The serial protocol is illustrated in Figure 1. All data transfers have two phases; all bytes are transferred MSB first. Accesses are initiated by a start condition (START), 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 (STOP). 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).

Address Byte

Immediately following the Start Condition, the host must transmit the address byte to the TC1321. The 7-bit SMBus address for the TC1321 is 1001000. The 7-bit address transmitted in the serial bit stream must match for the

TC1321 to respond with an Acknowledge (indicating the

TC1321 is on the bus and ready to accept data). The eighth 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.

Acknowledge (ACK)

Acknowledge (ACK) provides a positive handshake between the host and the TC1321. The host releases SDA after transmitting eight bits, then generates a ninth clock cycle to allow the TC1321 to pull the SDA line LOW to acknowledge that it successfully received the previous eight bits of data or address.

Data Byte

After a successful ACK of the address byte, the host must transmit the data byte to be written or clock out the data to be read. (See the appropriate timing diagrams. ) ACK will be generated after a successful write of a data byte into the

TC1321.

Stop Condition (STOP)

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 TC1321. NOTE: Refer to Timing Diagrams for serial bus timing.

Start Condition (START)

The TC1321 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.

© 2001 Microchip Technology Inc. DS21387A 7

TC1321-1 6/23/00

10-Bit Digital-to-Analog Converter with Two-Wire Interface

TC1321

REGISTER SET AND PROGRAMMER’S MODEL

TC1321 Command Set

(SMBus READ_BYTE and WRITE_BYTE)

COMMAND BYTE DESCRIPTION

COMMAND CODE FUNCTION

RWD

RWCR

00h

01h

Read/Write Data (DATA)

Read/Write Configuration (CONFIG)

Configuration Register (CONFIG),

8-BITS, READ/WRITE

D[7]

CONFIGURATION REGISTER (CONFIG)

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

RESERVED SHDN

Register Set Summary

The TC1321’s register set is summarized below. All registers are 10-bits wide.

NAME

DATA

CONFIG

DESCRIPTION POR State READ WRITE

Data Register 0000000000b*

(2 BYTE format)

CONFIG Register 0000 0000b

BIT

D[0]

D[7]-D[1]

POR FUNCTION

0

0

STANDBY switch

Reserved -

Always returns zero when read.

TYPE OPERATION

ReadWrite 1 = standby,

0 = normal

N/A N/A

Data Register (DATA),

10-Bits, READ/WRITE

Data Register (DATA) for 1st BYTE

D[9] D[8] D[7]

MSB X X

D[6] D[5]

X X

D[4]

X

D[3] D[2]

X X

Data Register (DATA) for 2nd BYTE

D[1] D[0]

X LSB

X

X

X

X

X

X

X

X

X

X

X

X

The DAC output voltage is a function of reference voltage and the binary value of the contents of the register

DATA. The transfer function is given by the expression:

V

OUT

= V

REF

x

[

DATA

]

1024

8 © 2001 Microchip Technology Inc. DS21387A

TC1321-1 6/23/00

10-Bit Digital-to-Analog Converter with Two-Wire Interface

TAPING FORM

Component Taping Orientation for 8-Pin MSOP Devices

User Direction of Feed User Direction of Feed

PIN 1

TC1321

W

Standard Reel Component Orientation for TR Suffix Device

PIN 1

P

Reverse Reel Component Orientation for RT Suffix Device

Carrier Tape, Number of Components Per Reel and Reel Size

Package

8-Pin MSOP

Carrier Width (W)

12 mm

Pitch (P)

8 mm

Part Per Full Reel

2500

Reel Size

13 in

Component Taping Orientation for 8-Pin SOIC (Narrow) Devices

User Direction of Feed User Direction of Feed

PIN 1

W

P

Standard Reel Component Orientation for TR Suffix Device

PIN 1

Standard Reel Component Orientation for RT Suffix Device

Carrier Tape, Number of Components Per Reel and Reel Size

Package

8-Pin SOIC (N)

Carrier Width (W)

12 mm

Pitch (P)

8 mm

Part Per Full Reel

2500

Reel Size

13 in

© 2001 Microchip Technology Inc. DS21387A 9

TC1321-1 6/23/00

10-Bit Digital-to-Analog Converter with Two-Wire Interface

TC1321

PACKAGE DIMENSIONS

8-Pin MSOP

PIN 1

.122 (3.10)

.114 (2.90)

.197 (5.00)

.189 (4.80)

.026 (0.65) TYP.

.122 (3.10)

.114 (2.90)

.016 (0.40)

.010 (0.25)

.006 (0.15)

.002 (0.05)

.043 (1.10)

MAX.

6

°

MAX.

.028 (0.70)

.016 (0.40)

.008 (0.20)

.005 (0.13)

TC1321-1 6/23/00

PIN 1

8-Pin SOIC (Narrow)

.157 (3.99)

.150 (3.81)

.244 (6.20)

.228 (5.79)

.050 (1.27) TYP.

.197 (5.00)

.189 (4.80)

.020 (0.51)

.013 (0.33)

.010 (0.25)

.004 (0.10)

.069 (1.75)

.053 (1.35)

8

°

MAX.

.050 (1.27)

.016 (0.40)

10

.010 (0.25)

.007 (0.18)

Dimensions: inches (mm)

© 2001 Microchip Technology Inc. DS21387A

10-Bit Digital-to-Analog Converter with Two-Wire Interface

TC1321

W

ORLDWIDE

S

ALES AND

S

ERVICE

AMERICAS

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ASIA/PACIFIC

(continued)

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No. 317 Xian Xia Road

Shanghai, 200051

Tel: 86-21-6275-5700 Fax: 86-21-6275-5060

Hong Kong

Microchip Asia Pacific

RM 2101, 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, OíShaugnessey Road

Bangalore, 560 025, India

Tel: 91-80-2290061 Fax: 91-80-2290062

Japan

Microchip Technology Intl. Inc.

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

Tel: 82-2-554-7200 Fax: 82-2-558-5934

EUROPE

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

Denmark

Microchip Technology Denmark ApS

Regus Business Centre

Lautrup hoj 1-3

Ballerup DK-2750 Denmark

Tel: 45 4420 9895 Fax: 45 4420 9910

France

Arizona Microchip Technology SARL

Parc díActivite 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

Arizona Microchip Technology GmbH

Gustav-Heinemann Ring 125

D-81739 Munich, Germany

Tel: 49-89-627-144 0 Fax: 49-89-627-144-44

Germany

Analog Product Sales

Lochhamer Strasse 13

D-82152 Martinsried, Germany

Tel: 49-89-895650-0 Fax: 49-89-895650-22

Italy

Arizona 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

01/09/01

All rights reserved. © 2001 Microchip Technology Incorporated. Printed in the USA. 1/01 Printed on recycled paper.

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 Microchipís 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, except as maybe explicitly expressed herein, under any intellectual property rights. The Microchip logo and name are registered trademarks of Microchip Technology Inc. in the U.S.A. and other countries. All rights reserved. All other trademarks mentioned herein are the property of their respective companies.

© 2001 Microchip Technology Inc. DS21387A 11

TC1321-1 6/23/00

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