ISL1218 Datasheet (Renesas)

ISL1218, Low Power RTC

ISL1218 Low Power RTC with Battery Backed SRAM The ISL1218 device is a low power real time clock with timing and crystal compensation, clock/calendar, power fail indicator, periodic or polled alarm, intelligent battery backup switching and battery-backed user SRAM.

The oscillator uses an external, low-cost 32.768kHz crystal.

The real time clock tracks time with separate registers for hours, minutes, and seconds.

The device has calendar registers for date, month, year and day of the week.

The ca