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MAXIM INTEGRATED Manuals
Integrated Circuits (ICs)
Timer IC t- real time clock Clock/calendar EDIP 24
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DS1685/DS1687 3V/
5V Real
-
Time Clocks
30
of
34
POWER
-
UP CONDI
TION
—
3V
POWER
-
DOWN CONDITION
—
3V
CS
V
IH
t
REC
2.7V
2.6V
2.5V
V
CC
POWER FAIL
t
R
CS
POWER FAIL
V
CC
V
IH
t
PF
t
F
2.7V
2.6V
2.5V
1
...
...
28
29
30
31
32
33
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34