Rainbow Electronics DS1286 - Manual (Page 11)

DS1286
11 of 13
POWER-UP/POWER-DOWN CONDITION
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
CE at V
IH
before Power-Down
t
PD
0
µ
s
V
CC
slew from 4.5V to 0V ( CE at V
IH
)
t
F
350
µ
s
V
CC
slew from 0V to 4.5V ( CE at V
IH
)
t
R
100
µ
s
CE at V
IH
after Power Up
t
REC
150 ns
(t
A
=25
°
C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Expected Data Retention Time t
DR
10 years 9
WARNING:
Under no circumstances are negative undershoots, of any amplitude, allowed when device is in battery
backup mode.