ISL1221 Description
DATASHEET ISL1221 Low Power RTC with Battery Backed SRAM and Event Detection FN6316 Rev 1.00 July 15, 2010 The ISL1221 device is a low power real time clock with Event Detect and Time Stamp function, timing and crystal pensation, clock/calendar, power fail indicator, periodic or polled alarm, intelligent battery backup switching with separate FOUT output and 2 Bytes of battery-backed user SRAM. The oscillator uses...