CYRUSTEK CO.

hold and low battery indication

continued from previous page

Pin No.

Symbol

Type

Description

20

F2

O

LCD segment line.

21

E2

O

LCD segment line.

22

D3

O

LCD segment line.

23

B3

O

LCD segment line.

24

F3

O

LCD segment line.

25

E3

O

LCD segment line.

26

AB4

O

LCD segment line.

27

POL

O

LCD segment line.

28

BP

O

LCD segment line.

29

G3

O

LCD segment line.

30

A3

O

LCD segment line.

31

C3

O

LCD segment line.

32

G2

O

LCD segment line.

33

LB

O

Low-battery flag segment driver.

34

V-

–

Negative supply voltage. Connecting to battery negative terminal.

35

INT

O

Integration cycle output.

36

BUFF

O

Integration resistor connection for buffer output.

37

A.Z

–

Auto-zero capacitor connection.

38

INLO

–

Low analog input signal connection.

39

INHI

–

High analog input signal connection.

40

COMMON

–

Set the common-mode voltage for the system.

41

C+REF

–

Positive capacitor connection for on-chip DC-DC converter.

42

C-REF

–

Negative capacitor connection for on-chip DC-DC converter.

43

REF LO

I

Low differential reference input connection.

44

REF HI

I

High differential reference input connection.

Note:

1. Pin No. of QFP-44 pin package.

Absolute Maximum Ratings

Characteristic

Rating

Supply Voltage (

to

)

12V

Analog Input Voltage (either input)

to

Reference Input Voltage (either input)

to

Clock Input

TEST to

Power Dissipation(plastic package)

800mW

Operating Temperature

C to

C

Storage Temperature

C to

C

Lead Temperature (soldering,10sec)

C

Electrical Characteristics

5

July 21, 2003