ISL1220 Datasheet (Renesas)

ISL1220, Low Power RTC

DATASHEET ISL1220 Low Power RTC with 8 Bytes of Battery Backed SRAM and Separate FOUT FN6315 Rev 1.00 August 7, 2015 The ISL1220 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, battery-backed user SRAM and separate FOUT and IRQ outputs.

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

The real time clock tracks time with separate registers for hours, mi