M41T60 datasheet(1/27 Pages) STMICROELECTRONICS

Part #	M41T60

Description	Serial access real-time clock

PDF	27 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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1 / 27 page

April 2010

Doc ID 10396 Rev 13

1/27

1

M41T60

Serial access real-time clock

Features

■ Counters for seconds, minutes, hours, day,

date, month, years, and century

■ 32 KHz crystal oscillator integrating load

capacitance and high crystal series resistance

operation

■ Oscillator stop detection monitors clock

operation

■ Serial interface supports I2C bus (400 kHz)

■ 350 nA timekeeping current at 3 V

■ Low operating current of 35 µA (at 400 kHz)

■ Timekeeping down to 1.0 V

■ 1.3 V to 4.4 V I2C bus operating voltage

■ Software clock calibration to compensate

deviation of crystal due to temperature

■ Software programmable output (OUT)

■ Operating temperature of –40 to 85 °C

■ Automatic leap year compensation

■ Lead-free 16-pin QFN package

■ Li-ion rechargeable operation

1

XI

2

XO

3

4

ST QFN16

SMT

CRYSTAL

VSOJ20 (47.6mm2)

Guard Ring

(21.5mm2)

GND Plane

QFN16 (Q)

3 mm x 3 mm

Footprint comparison of ST’s QFN16 with

SMT crystal vs. competing VSOJ20 package

www.st.com

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M41T60 Datasheet(PDF) 1 Page - STMicroelectronics

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