BQ4842Y Manufacturer
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BQ4842Y Datasheet (PDF)
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BQ4842Y Features- Integrated SRAM, real-time clock, CPU supervisor, crystal, power-fail control circuit, and battery
- Real-Time Clock counts hundredths of seconds through years in BCD format
- RAM-like clock access
- Compatible with industry-standard 128K x 8 SRAMs
- Unlimited write cycles
- 10-year minimum data retention and clock operation in the absence of power
- Automatic power-fail chip deselect and write-protection
- Watchdog timer, power-on reset, alarm/periodic interrupt, power-fail and battery-low warning
- Software clock calibration for greater than ±1 minute per month accuracy
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