DS1744 Maxim, DS1744 Datasheet - Page 2

• Manufacturer Part Number: DS1744
• Description: The DS1744 is a full-function, year-2000-compliant (Y2KC), real-time clock/calendar (RTC) and 32k x 8 NV SRAM
• Manufacturer: Maxim

PIN DESCRIPTION
EDIP
10
21
23
24
25
26
11
12
13
15
16
17
18
19
14
20
22
27
28
—
—
—
1
2
3
4
5
6
7
8
9
PIN
PowerCap
1, 2, 3, 33,
32
30
25
24
23
22
21
20
19
18
28
29
27
26
31
16
15
14
13
12
11
10
17
34
9
8
7
6
5
4
X1, X2,
NAME
GND
V
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
N.C.
RST
A14
A12
A10
A11
A13
WE
V
CE
OE
A7
A6
A5
A4
A3
A2
A1
A0
A9
A8
BAT
CC
Address Input
Data Input/Output
Ground
Active-Low Chip-Enable Input
Active-Low Output-Enable Input
Active-Low Write-Enable Input
Power-Supply Input
Active-Low Reset Output, Open Drain. Requires a pullup resistor for
proper operation.
No Connection
Crystal Connections, V
DS1744/DS1744P Y2K-Compliant, Nonvolatile Timekeeping RAMs
2 of 16
BAT
Battery Connection
FUNCTION