Rainbow-electronics DS1486P Manual de usuario Pagina 12

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DS1486/DS1486P
12 of 17
POWER-DOWN/POWER-UP TIMING
AC ELECTRICAL CHARACTERISTICS
POWER-UP POWER-DOWN TIMING (0°C to 70°C)
PARAMETER SYMBOL MIN MAX UNITS NOTES
CE High to Power-Fail
t
PF
0ns
Recovery at Power-Up t
REC
200 ms
V
CC
Slew Rate
Power-Down
t
F
4.0£V
CC
£4.5V
300
ms
V
CC
Slew Rate
Power-Down
t
FB
3.0£V
CC
£4.25V
10
ms
V
CC
Slew Rate Power-Up t
R
4.5V³V
CC
³4.0V
0
ms
Expected Data Retention t
DR
10 years 9
WARNING:
Under no circumstances are negative undershoots, of any amplitude, allowed when device is in battery
backup mode.
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