DS174470 查看數據表（PDF） - Maxim Integrated
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DS174470 Datasheet PDF : 16 Pages
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PIN DESCRIPTION
PIN
EDIP PowerCap
NAME
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
11
16
DQ0
12
15
DQ1
13
14
DQ2
15
13
DQ3
16
12
DQ4
17
11
DQ5
18
10
DQ6
19
9
DQ7
14
17
GND
20
8
CE
22
7
OE
27
6
WE
28
5
VCC
—
4
RST
—
1, 2, 3, 33,
34
N.C.
—
X1, X2,
VBAT
DS1744/DS1744P Y2K-Compliant, Nonvolatile Timekeeping RAMs
FUNCTION
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, VBAT Battery Connection
2 of 16
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