Rainbow-electronics DS1747P Manual do Utilizador descarregar pdf (Página 12)

DS1747/DS1747P

12 of 18

POWER–UP/DOWN AC CHARACTERISTICS

(Over the Operating Range; V

CC

= 5.0V ± 10%)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

CE or WE at V

H

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

Power-up Recover Time t

REC

35 ms

Expected Data Retention Time

(Oscillator ON)

t

DR

10 years 5,6

POWER–UP/POWER–DOWN TIMING 5 VOLT DEVICE

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 18

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