AB0803
Features
- Ultra-low supply current (all at 3V):
- 14 n A with RC oscillator
- 22 n A with RC oscillator and Autocalibration
- 55 n A with crystal oscillator
- Baseline timekeeping features
:
- 32.768 k Hz crystal oscillator with integrated load capacitor/resistor
- Counters for hundredths, seconds, minutes, hours, date, month, year, century, and weekday
- Alarm capability on all counters
- Programmable output clock generation (32.768 k Hz to 1 year)
- Countdown timer with repeat function
- Automatic leap year calculation
- Advanced timekeeping features
:
- Integrated power optimized RC oscillator
- Advanced crystal calibration to ± 2 ppm
- Advanced RC calibration to ± 16 ppm
- Automatic calibration of RC oscillator to crystal oscillator
- Watchdog timer with hardware reset
- Up to 256 bytes of general purpose RAM
- Power management features
:
- Automatic switchover to VBAT
- External interrupt monitor
- Programmable low battery detection threshold
- Programmable analog voltage parator
- I2C...
