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M41T80M

Serial access real-time clock with alarm

STMicroelectronics 

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

8

1

SO8

8-pin SOIC

August 2011

Doc ID 9074 Rev 5

1/27

www.st.com

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