DS1554
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
Rise Time: V
PF(MIN)
to
V
PF(MAX)
V
PF
to
RST
High
Expected Data Retention Time
(Oscillator On)
CE
(0掳C to 70掳C; V
CC
= 3.3V
卤10%)
TYP
MAX
UNITS
碌s
碌s
碌s
200
ms
years
6, 7
NOTES
0
SYMBOL
t
PD
t
F
t
R
t
REC
t
DR
MIN
300
0
40
10
POWER-UP/DOWN WAVEFORM TIMING 3.3-VOLT DEVICE
Figure 9
CAPACITANCE
PARAMETER
Capacitance on all input pins
Capacitance on
IRQ
/FT,
RST
,
and DQ pins
SYMBOL
C
IN
C
IO
MIN
TYP
MAX
7
10
pF
pF
(T
A
= 25掳C)
UNITS
NOTES
1
1
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