Rainbow-electronics DS1543 Manual do Utilizador descarregar pdf (Página 14)

DS1543

14 of 17

POWER-UP/DOWN CHARACTERISTICS (V

CC

= 5.0V ±10%)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

CE or WE at V

IH

, Before

Power-Down

t

PD

0

µs

V

CC

Fall Time: V

PF(MAX)

to

V

PF(Min)

t

F

300

µs

V

CC

Fall Time: V

PF(MIN)

to V

SO

t

FB

10

µs

V

CC

Rise Time: V

PF(MIN)

to

V

PF(MAX)

t

R

0

µs

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

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

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