AB0811 Datasheet | Abracon

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 (up to 400 k Hz) and 3-wire or 4-wire SPI (up to 2 MHz) serial interfaces available - Operating voltage 1.5-3.6 V - Clock and RAM retention voltage 1.5-3.6 V - Operating temperature - 40 to 85 °C - All inputs include Schmitt Triggers - 3x3 mm QFN-16 package Applications - Smart cards - Wireless sensors and tags - Medical electronics - Utility meters - Data...