Write cycle 2, Power–down/power–up condition – Rainbow Electronics DS1249Y_AB User Manual

Page 6

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background image

V

CC

V

TP

Y

3.0V

t

F

t

PD

t

R

t

REC

t

DR

BACKUP CURRENT
SUPPLIED FROM
LITHIUM BATTERY

CE,
WE

SEE NOTE 11

t

PU

DS1249Y/AB

021497 6/9

WRITE CYCLE 2

t

WC

V

IL

V

IH

V

IL

V

IH

V

IL

V

IH

ADDRESSES

CE

WE

D

OUT

D

IN

DATA IN STABLE

t

AW

t

WP

t

WR2

V

IH

V

IL

V

IL

V

IL

V

IH

V

IH

V

IL

V

IL

t

COE

t

ODW

t

DS

t

DH2

V

IL

V

IH

V

IL

V

IH

SEE NOTES 2, 3, 4, 6, 7, 8 AND 13

POWER–DOWN/POWER–UP CONDITION

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