DS14285/DS14287

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POWER-DOWN/POWER-UP TIMING

POWER-DOWN/POWER-UP TIMING

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

CS

0

µs

300

µs

100

µs

CS

20

200

ms

Chip Enable Propagation Delay to

External SRAM

10

ns

°C)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Expected Data Retention for DS14287

10

years

10

NOTE:

The real-time clock will keep time to an accuracy of+1 minute per month during data retention time for

WARNING:

Under no circumstances are negative undershoots, of any amplitude, allowed when device is in battery

backup mode.