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Part Name
Description
DS1642 View Datasheet(PDF) - Dallas Semiconductor -> Maxim Integrated
Part Name
Description
Manufacturer
DS1642
Nonvolatile Timekeeping RAM
Dallas Semiconductor -> Maxim Integrated
DS1642 Datasheet PDF : 11 Pages
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DS1642
WRITE CYCLE, AC CHARACTERISTICS
(0°C to 70°C; VCC = 5.0V ± 10%)
PARAMETER
SYMBOL
70 ns access 100 ns access
MIN MAX MIN MAX
UNITS
NOTES
Write Cycle Time
t
WC
70
100
ns
Address Setup Time
t
AS
0
0
ns
WE
Pulse Width
t
WEW
50
70
ns
CE
Pulse Width
t
CEW
60
75
ns
Data Setup Time
t
DS
30
40
ns
Data Hold Time
t
DH
0
0
ns
Address Hold Time
t
AH
5
5
ns
WE
Data Off Time
t
WEZ
25
35
ns
Write Recovery Time
t
WR
5
5
ns
7 of 11
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