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M41T00S

Serial access real-time clock

STMicroelectronics 

Features

■ 2.0 to 5.5 V clock operating voltage

■ Counters for seconds, minutes, hours, day,

date, month, year, and century

■ Software clock calibration

■ Automatic switchover and deselect circuitry

(fixed reference)

– VCC = 2.7 to 5.5 V

2.5V ≤ VPFD ≤ 2.7 V

■ Serial interface supports I2C bus (400 kHz

protocol)

■ Low operating current of 300 µA

■ Oscillator stop detection

■ Battery or SuperCap™ backup

■ Operating temperature of –40 to 85°C

■ Ultra-low battery supply current of 1 µA

M41T00S

Serial access real-time clock

8

1

SO8 (M)

8-pin SOIC

May 2008

Rev 4

1/26

www.st.com

1

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