M41T11 datasheet(1/29 Pages) STMICROELECTRONICS

Part #	M41T11

Description	Serial real-time clock with 56 bytes of NVRAM

PDF	29 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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1 / 29 page

May 2008

Rev 8

1/29

1

M41T11

Serial real-time clock with 56 bytes of NVRAM

Features

■ Counters for seconds, minutes, hours, day,

date, month, years 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 (100 kHz

protocol)

■ Ultra-low battery supply current of 0.8 µA (typ.

at 3 V)

■ 2.0 to 5.5 V clock operating voltage

■ Automatic switchover and deselect circuitry

■ 56 bytes of general purpose RAM

■ Software clock calibration to compensate

crystal deviation due to temperature

■ Automatic leap year compensation

■ Operating temperature of –40 to 85°C

■ Packaging includes a 28-lead SOIC and

SNAPHAT® top (to be ordered separately;

3.3 V to 5.0 V supply voltage only)

■ RoHS compliant

– Lead-free second level interconnect

8

1

28

1

SO8 (M)

SNAPHAT (SH) battery & crystal

SOH28 (MH)

www.st.com

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