BQ4802LYPWR Clock Timer ICS Real Time Clock Parallel RTC

BQ4802LYPWR Clock Timer ICS Real Time Clock Parallel RTC FEATURES D Real-Time Clock Counts Seconds Through Centuries in BCD Format – bq4802Y: 5-V Operation – bq4802LY: 3.3-V Operation D On-Chip Battery-Backup Switchover Circuit With Nonvolatile Control for External SRAM D Less Than 500 nA of Clock Operation Current in Backup Mode D Microprocessor Reset With Push-Button Override D Independent Watchdog Timer With Programmable Time-Out Period D Power-Fail Interrupt Warning D