CBC921 - Real-Time Clock/Calendar

Datasheet Details

The CBC921xx combines a real-time clock (RTC) with a backup battery charger and other power management

Ultra-low power Real-Time Clock (RTC) with power-fail detect and battery management.
Low power timer and power manager extend run time in battery-powered systems.
Controls 4.1V rechargeable micro-batteries and 3.2V rechargeable coin cells and supercaps; no off-chip components required for battery charger.
Buck charge pump supply extends backup battery life: 20nA RTC using internal RC oscillator 50nA RTC using crystal oscillator.
Counters for.

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Published: Sep 18, 2019 |