DS1744/DS1744P Y2K-Compliant, Nonvolatile Timekeeping RAMs

2 of 16

PIN DESCRIPTION

PIN

EDIP

PowerCap

NAME

FUNCTION

1

32

A14

2

30

A12

3

25

A7

4

24

A6

5

23

A5

6

22

A4

7

21

A3

8

20

A2

9

19

A1

10

18

A0

21

28

A10

23

29

A11

24

27

A9

25

26

A8

26

31

A13

Address Input

11

16

DQ0

12

15

DQ1

13

14

DQ2

15

13

DQ3

16

12

DQ4

17

11

DQ5

18

10

DQ6

19

9

DQ7

Data Input/Output

14

17

GND

Ground

20

8

CE

Active-Low Chip-Enable Input

22

7

OE

Active-Low Output-Enable Input

27

6

WE

Active-Low Write-Enable Input

28

5

Power-Supply Input

—

4

RST

Active-Low Reset Output, Open Drain. Requires a pullup resistor for

proper operation.

—

1, 2, 3, 33,

34

N.C.

No Connection

—

X1, X2,