M41T81 Datasheet | STMicroelectronics

Serial access real-time clock with alarm SO8 8-pin SOIC Features - For all new designs use M41T81S - Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and century - 32 KHz crystal oscillator integrating load capacitance (12.5 pF) providing exceptional oscillator stability and high crystal series resistance operation - Serial interface supports I2C bus (400 kHz protocol) - Ultra-low battery supply current of 0.6 ΜA (typ at 3 V) - 2.0 to 5.5 V clock operating voltage - Automatic switchover and deselect circuitry (for 3 V application select M41T81S datasheet) - Power-down time stamp (HT bit) allowing determination of time elapsed in...