M41T80_11 Datasheet, PDF (1/27 Pages) STMicroelectronics – Serial access real-time clock with alarm

M41T80
Serial access real-time clock with alarm
Features
■ 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)
■ 2.0 to 5.5 V clock operating voltage
■ 32 KHz square wave on power-up to drive a
microcontroller in low-power mode
■ Programmable (1 Hz to 32 KHz) square wave
■ Programmable alarm and interrupt function
■ Low operating current of 200 µA
■ Operating temperature of –40 to 85 °C
■ ECOPACK^® package available
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SO8
8-pin SOIC
August 2011
Doc ID 9074 Rev 5
1/27
www.st.com
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