Rainbow-electronics DS1643P Manuel d'utilisateur télécharger pdf (Page 9)

DS1643/DS1643P

9 of 14

POWER-UP/DOWN AC CHARACTERISTICS (0°C to 70°C; V

= 5.0V ±=10%)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

CE or WE at V

, CE2 at V

, Before

Power-down

µs

Fall Time: V

(MAX) to V

(MIN) t

300

µs

Fall Time: V

(MIN) to V

BAT

µs

Rise Time: V

(MIN) to V

(MAX) t

µs

Power-up Recover Time t

REC

35 ms

Expected Data Retention Time

(Oscillator On)

10 years 5, 6

POWER-UP/POWER-DOWN TIMING

CAPACITANCE (t

= 25°C)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Capacitance on all pins C

7pF

Capacitance on all output pins C

10 pF

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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Rainbow-electronics DS1643P Manuel d'utilisateur Page 9