Rainbow-electronics DS1543 Manual do Utilizador descarregar pdf (Página 15)

DS1543

15 of 17

POWER-UP/DOWN CHARACTERISTICS (V

= 3.3V ±10%)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

CE or WE at V

, Before

Power-Down

µs

Fall Time: V

PF(MAX)

PF(Min)

300

µs

Rise Time: V

PF(MIN)

PF(MAX)

µs

to RST High

REC

40 200 ms

Expected Data Retention Time

(Oscillator On)

0 years 6, 7

POWER-UP/DOWN WAVEFORM TIMING 3.3-VOLT DEVICE Figure 9

CAPACITANCE (T

= 25°C)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Capacitance on all input pins C

7pF1

Capacitance on IRQ /FT, RST ,

and DQ pins

10 pF 1

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

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Rainbow-electronics DS1543 Manual do Utilizador Página 15