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DS1251P Datasheet(PDF) 13 Page - Dallas Semiconductor

Part # DS1251P
Description  4096k NV SRAM with Phantom Clock
PDF  22 Pages
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Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1251P Datasheet(HTML) 13 Page - Dallas Semiconductor

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DS1251/DS1251P
13 of 22
POWER-DOWN/POWER-UP TIMING
Over the operating range (3.3V)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS NOTES
CE
at VIH before Power-Down
tPD
0
ms
VCC Slew from VPF(max) to
VPF(min)( CE at VIH)
tF
300
ms
VCC Slew from VPF(max) to
VPF(min)( CE at VIH)
tR
0
ms
CE
at VIH after Power-Up
tREC
1.5
2.5
ms
(TA = +25°C)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS NOTES
Expected Data Retention Time
tDR
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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