0v ± 10%) – Rainbow Electronics DS1554 User Manual
Page 14
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DS1554
14 of 20
POWER-UP/DOWN CHARACTERISTICS
(Over the Operating Range; V
CC
=5.0V
±
10%)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
CE
or
WE
at V
IH
, Before
Power-Down
t
PD
0
µ
s
V
CC
Fall Time: V
PF(MAX)
to
V
PF(MIN)
t
F
300
µ
s
V
CC
Fall Time: V
PF(MIN)
to V
SO
t
FB
10
µ
s
V
CC
Rise Time: V
PF(MIN)
to
V
PF(MAX)
t
R
0
µ
s
V
PF
to
RST
High
t
REC
40
200
ms
Expected Data Retention Time
(Oscillator On)
t
DR
10
years
6, 7
POWER-UP/DOWN WAVEFORM TIMING 5-VOLT DEVICE Figure 8
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