IC/Module: DS1307 Serial Real-Time Clock
DS1307 is a low-power, full binary-coded decimal clock/calendar with 56 bytes of NV SRAM. The clock/calendar counts seconds, minutes, hours, date of the month, month, day of the week, and year with leap-year compensation. It automatically adjusts the end of the month for months with less than 31 days.
low-power Operation
RTC2 PROTO Board operates on low-power consumption, which extends battery backup run time. It consumes less than 500nA in battery-backup mode with oscillator running. The board includes automatic power-fail circuitry that detects and switches to the backup supply automatically to continue the timekeeping operation.