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BQ3285ECSS Datasheet(PDF) 21 Page - Texas Instruments

Part # BQ3285ECSS
Description  Real-Time Clock (RTC)
PDF  26 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

BQ3285ECSS Datasheet(HTML) 21 Page - Texas Instruments

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bq3285EC/LC
July 1996
Power-Down/Power-Up Timing—bq3285EC (T
A =TOPR)
Symbol
Parameter
Minimum
Typical
Maximum
Unit
Conditions
tF
VCC slew from 4.5V to 0V
300
-
-
µs
tR
VCC slew from 0V to 4.5V
100
-
-
µs
tCSR
CS at VIH after power-up
20
-
200
ms
Internal write-protection
period after VCC passes VPFD
on power-up.
Caution:
Negative undershoots below the absolute maximum rating of -0.3V in battery-backup mode
may affect data integrity.
Power-Down/Power-Up Timing—bq3285EC



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