DS1225AB-200 参数 Datasheet PDF下载

DS1225AB/AD

POWER-DOWN/POWER-UP CONDITION

SEE NOTE 11

POWER-DOWN/POWER-UP TIMING

PARAMETER

(T

A

: See Note 10)

UNITS

µ

s

µ

s

µ

s

ms

UNITS

years

NOTES

11

CE

at

V

IH

before Power-Down

V

CC

slew from V

TP

to 0

V

V

CC

slew from 0

V

to V

TP

CE at V

IH

after Power-Up

PARAMETER

Expected Data Retention Time

SYMBOL MIN TYP MAX

0

t

PD

300

t

F

300

t

R

2

125

t

REC

SYMBOL MIN TYP MAX

t

DR

10

(T

A

= 25°C)

NOTES

9

WARNING:

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

backup mode.

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