DS1685 Datasheet, PDF (31/33 Pages) Maxim Integrated Products – 3V/5V Real-Time Clocks

POWER-UP CONDITION—5V
CS
VCC
4.5V
4.25V
4.0V
VIH
tREC
tR
POWER FAIL
DS1685/DS1687 3V/5V Real-Time Clocks
POWER-DOWN CONDITION—5V
CS
V IH
VCC
POW ER FAIL
4.5V
4.25V
4.0V
3.0V
t_PF
t_F
t_FB
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