Renesas Electronics ISL12022IBZ-T7A, Real Time Clock, 128B RAM Serial-I2C, 8-Pin 8-SOIC

The Renesas Electronics low power RTC with battery-backed SRAM and embedded temp compensation with auto daylight saving. This device is a low power real time clock with an embedded Temp sensor for oscillator compensation, clock/calendar, power fail, low battery monitor, brownout indicator, single periodic or polled alarms, intelligent battery-backup switching, battery reseal function, and 128 bytes of battery-backed user SRAM.

Customer programmable day light saving time
15 selectable frequency outputs
Battery reseal function to extend battery shelf life
Oscillator failure detection