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DS1643 Fiches technique(PDF) 2 Page - Maxim Integrated Products

No de pièce DS1643
Description  Nonvolatile Timekeeping RAMs
PDF  17 Pages
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Fabricant  MAXIM [Maxim Integrated Products]
Site Internet  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

DS1643 Fiches technique(HTML) 2 Page - Maxim Integrated Products

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DS1643/DS1643P
2 of 17
PIN DESCRIPTION
PIN
PDIP
PowerCap
NAME
FUNCTION
1
1, 2, 3,
31–34
N.C.
No Connection
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
Address Inputs
11
16
DQ0
12
15
DQ1
13
14
DQ2
15
13
DQ3
16
12
DQ4
17
11
DQ5
18
10
DQ6
19
9
DQ7
Data Input/Output
20
8
CE
Active-Low Chip-Enable Input
22
7
OE
Active-Low Output-Enable Input
26
—
CE2
Chip-Enable 2 Input (Active High)
27
6
WE
Active-Low Write-Enable Input
28
5
VCC
Power-Supply Input
—
4
PFO
Active-Low Power-Fail Output. This open-drain pin requires a
pullup resistor for proper operation.
14
17
GND
Ground
—
X1, X2,
VBAT
Crystal Connection, Battery Connection



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