Datasheet Summary
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Real Time Clock with On Chip Temp pensation ±5ppm
Data Sheet March 30, 2007 FN6451.0
Low Power RTC with VDD Battery Backed SRAM and Embedded Temp pensation ±5ppm with Auto Day Light Saving
The ISL12021 device is a low power real time clock with an embedded Temp sensor for oscillator pensation, clock/calendar, power fail, low battery monitor, brown out indicator, single periodic or polled alarms, intelligent battery backup switching and 128 bytes of 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,...