Rainbow-electronics DS1384 Manual do Utilizador descarregar pdf (Página 13)

DS1384

13 of 17

CAPACITANCE (t

= 25°C)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Capacitance on all pins

(except DQ)

715 pF

Capacitance on DQ pins C

715 pF

AC ELECTRICAL CHARACTERISTICS (0°C to 70°C)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

CE at V

before Power

Down

0µs

(Max) to V

(Min)

Fall Time

300 µs

(Min) to V

Fall

Time

10 µs

(Min) to V

(Max)

Rise Time

0µs

Power Up t

REC

10 150 ms

Expected Data Retention

Time (Oscillator On)

10 years 7

READ CYCLE TIMING: RTC AND EXTERNAL SRAM CONTROL SIGNALS

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

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Rainbow-electronics DS1384 Manual do Utilizador Página 13