DS1220Y

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POWER-DOWN/POWER-UP CONDITION

SEE NOTE 11

POWER-DOWN/POWER-UP TIMING

PARAMETER

SYMBOL

MIN

MAX

UNITS

NOTES

0

µs

11

100

µs

0

µs

2ms

°C)

PARAMETER

SYMBOL

MIN

MAX

UNITS

NOTES

Expected Data Retention Time

10

years

9

WARNING:

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

backup mode.

NOTES:

1.

WE is high for a read cycle.

state.

going low to the earlier of CE or WE going high.

5. These parameters are sampled with a 5 pF load and are not 100% tested.

6. If the CE low transition occurs simultaneously with or later than the WE low transition in write

cycle 1, the output buffers remain in a high impedance state during this period.