V
CC
V
TP
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
