Real-Time Clock counts seconds through years in BCD format
On-chip battery-backup switchover circuit with nonvolatile control for external SRAM
Less than 500nA of clock operation current in backup mode
Microprocessor reset valid to V_CC =V_SS
Independent watchdog timer with a programmable time-out period
Power-fail interrupt warning
Programmable clock alarm interrupt active in battery-backup mode
Programmable periodic interrupt
Battery-low warning

BQ4845S-A4 Parameters

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