Rainbow-electronics DS1286 Uživatelský manuál stáhnout pdf (Strana 11)

DS1286

11 of 13

POWER-UP/POWER-DOWN CONDITION

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

CE at V

before Power-Down

µs

slew from 4.5V to 0V (CE at V

)

350

µs

slew from 0V to 4.5V (CE at V

)

100

µs

CE at V

after Power Up

REC

150 ns

=25°C)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Expected Data Retention Time t

10 years 9

WARNING:

Under no circumstances are negative undershoots, of any amplitude, allowed when device is in battery

backup mode.

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Rainbow-electronics DS1286 Uživatelský manuál Strana 11