Datasheet

DS1744/DS1744P Y2K-Compliant, Nonvolatile Timekeeping RAMs
2 of 16
PIN DESCRIPTION
PIN
NAME FUNCTION
EDIP
PowerCap
1
32
A14
Address Input
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
11
16
DQ0
Data Input/Output
12
15
DQ1
13
14
DQ2
15
13
DQ3
16
12
DQ4
17
11
DQ5
18
10
DQ6
19
9
DQ7
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
V
CC
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,
V
BAT
Crystal Connections, V
BAT
Battery Connection