DS1284/DS1286
POWER-UP/POWER-DOWN CONDITION
PARAMETER
SYMBOL MIN
TYP
MAX UNITS NOTES
CE at VIH before Power-Down
VCC Slew from 4.5V to 0V (CE at VIH)
VCC Slew from 0V to 4.5V (CE at VIH)
CE at VIH after Power-Up
tPD
tF
tR
0
µs
µs
µs
350
100
tREC
150
ns
POWER-DOWN/POWER-UP CONDITION
(TA = +25°C)
PARAMETER
SYMBOL MIN
tDR 10
TYP
MAX UNITS NOTES
years
Expected Data-Retention Time
9
(DS1286)
WARNING: Under no circumstances are negative undershoots, of any amplitude, allowed
when device is in battery-backup mode.
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