DS1746WP-120(2010) 查看數據表（PDF） - Maxim Integrated

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DS1746WP-120
(Rev.:2010)

Y2K-Compliant, Nonvolatile Timekeeping RAMs

Maxim Integrated 

DS1746/DS1746P Y2K-Compliant, Nonvolatile Timekeeping RAMs

POWER-UP/DOWN AC CHARACTERISTICS—5V

(VCC = 5.0V 10%, TA = Over the Operating Range.)

PARAMETER

SYMBOL

MIN

TYP

CE or WE at VH

Before Power-Down

tPD

0

VCC Fall Time: VPF(MAX) to

VPF(MIN)

tF

300

VCC Fall Time: VPF(MIN) to VSO

tFB

10

VCC Rise Time: VPF(MIN) to

VPF(MAX)

tR

0

Power-Up Recover Time

tREC

Expected Data-Retention Time

(Oscillator ON)

tDR

10

MAX

35

UNITS NOTES

s

s

s

s

ms

years

5, 6

POWER-UP/DOWN TIMING (5V DEVICE)

13 of 16

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