CBC921 Overview
Key Features
- 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
- Buck charge pump supply extends backup battery life: 20nA RTC using internal RC oscillator 50nA RTC using crystal oscillator
- Automatic leap year calculation
- Alarm capability on all counters
- Two configurable multi-use outputs for interrupts, output clock, and managing sleep mode of external devices
- 64 bytes of RAM
- Internal temperature measurement with 10-bit ADC enables oscillator temperature compensation
- Advanced crystal calibration to ± 1 ppm
- Ultra-low Iq VIN POR circuit (< 25nA)
