DS1557
POWER-UP/DOWN CHARACTERISTICS
PARAMETER
or
WE
at V
IH
, Before
Power-Down
V
CC
Fall Time: V
PF(MAX)
to
V
PF(Min)
V
CC
Fall Time: V
PF(MIN)
to V
SO
V
CC
Rise Time: V
PF(MIN)
to
V
PF(MAX)
V
PF
to
RST
High
Expected Data Retention Time
(Oscillator On)
CE
(0擄C to 70擄C; V
CC
= 5.0V
鹵10%)
TYP
MAX
UNITS
碌s
碌s
碌s
碌s
200
ms
years
6
NOTES
0
SYMBOL
t
PD
t
F
t
FB
t
R
t
REC
t
DR
MIN
300
10
0
40
10
POWER-UP/DOWN WAVEFORM TIMING 5-VOLT DEVICE
Figure 8
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