M41T63 Datasheet | STMicroelectronics

.. M41T62, M41T63 M41T64, M41T65 Serial Access Real-Time Clock with Alarms Feature summary - Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and century - 32 KHz crystal oscillator integrating load capacitance and high crystal series resistance operation - Oscillator stop detection monitors clock operation - Serial interface supports I2C bus (400kHz) - 350nA timekeeping current @ 3V - Low operating current of 35µA (@400kHz) - Timekeeping down to 1.0V - 1.3V to 4.4V I2C bus operating voltage - 32KHz square wave on power-up to drive a microcontroller in low power mode (M41T62/63/64) - Programmable (1Hz to 32KHz) square wave...