BQ4847

BQ4847 Description

BQ4847 Categories

BQ4847 Manufacturer

BQ4847 Datasheet (PDF)

BQ4847 Price & Availability

BQ4847 Features

• Real-Time Clock counts seconds through years in BCD format
• Integrated battery and crystal
• On-chip battery-backup switch-over circuit with nonvolatile control for an external SRAM
• 130mAh battery capacity
• ±1 minute per month clock accuracy
• 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

BQ4847 Parameters

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