DS1746 Maxim, DS1746 Datasheet - Page 2

• Manufacturer Part Number: DS1746
• Description: The DS1746 is a full-function, year-2000-compliant (Y2KC), real-time clock/calendar (RTC) and 128k x 8 nonvolatile static RAM
• Manufacturer: Maxim

PIN DESCRIPTION
PDIP
1, 30
10
11
12
23
25
26
27
28
31
13
14
15
17
18
19
20
21
16
22
24
29
32
—
—
2
3
4
5
6
7
8
9
PIN
PowerCap
1, 33, 34
32
30
25
24
23
22
21
20
19
18
28
29
27
26
31
16
15
14
13
12
11
10
17
3
2
9
8
7
6
5
4
X1, X2,
NAME
GND
N.C.
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
V
RST
A16
A14
A12
A10
A11
A13
A15
V
WE
CE
OE
A7
A6
A5
A4
A3
A2
A1
A0
A9
A8
BAT
CC
No Connection
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 Power-Fail Output, Open Drain. Requires a pullup resistor for
proper operation.
Crystal Connection, V
against reverse charging when used with a lithium battery.
ic.com/qa/info/ul/
2 of 16
BAT
Battery Connection. UL recognized to ensure
FUNCTION
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