
DS1558
16 of 18
POWER-UP/DOWN CHARACTERISTICS (V
CC
= +5V ±10%, T
A
= -40°C to +85°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
CE or WE at V
IH
,
Before Power-Down
t
PD
0
ms
V
CC
Fall Time: V
PF(MAX)
to V
PF(MIN)
t
F
300
ms
V
CC
Fall Time: V
PF(MIN)
to V
SO
t
FB
10
ms
V
CC
Rise Time: V
PF(MIN)
to V
PF(MAX)
t
R
0
ms
V
PF
to RST High
t
REC
40 200 ms
Figure 8. +5V POWER-UP/DOWN WAVEFORM TIMING
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