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零件编号
产品描述 (功能)
DS1646 查看數據表(PDF) - Maxim Integrated
零件编号
产品描述 (功能)
生产厂家
DS1646
Nonvolatile Timekeeping RAM
Maxim Integrated
DS1646 Datasheet PDF : 13 Pages
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PIN DESCRIPTION
PIN
PDIP PowerCap
1, 30 1, 33, 34
2
3
3
32
4
30
5
25
6
24
7
23
8
22
9
21
10
20
11
19
12
18
25
29
26
27
27
26
28
31
13
16
14
15
15
14
17
13
18
12
19
11
20
10
21
9
16
17
22
8
23
28
24
7
29
6
31
2
32
5
NAME
N.C.
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
A11
A9
A8
A13
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
GND
CE
A10
OE
WE
A15
V
CC
—
4
PFO
—
X1, X2,
V
BAT
No Connection
FUNCTION
DS1646/DS1646P
Address Input
Data Input/Output
Ground
Active-Low Chip Enable
Address Input
Active-Low Output Enable
Active-Low Write Enable
Address Input
Power-Supply Input
Active-Low Power-Fail Output, Open Drain. Requires a pullup
resistor for proper operation.
Crystal Connection, V
BAT
Battery Connection
2 of 12
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