M41T60 datasheet(1/23 Pages) STMICROELECTRONICS

Part #	M41T60

Description	Serial Access Real-Time Clock

PDF	23 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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May 2005

M41T60

Serial Access Real-Time Clock

FEATURES SUMMARY

■

350nA TIMEKEEPING CURRENT @ 3V

■

TIMEKEEPING DOWN TO 1.0V

■

1.3V TO 3.6V I2C BUS OPERATING

VOLTAGE

■

COUNTERS FOR SECONDS, MINUTES,

HOURS, DAY, DATE, MONTH, YEARS, AND

CENTURY

■

SERIAL INTERFACE SUPPORTS I2C BUS

(400kHz)

■

SOFTWARE CLOCK CALIBRATION

■

LOW OPERATING CURRENT OF 35µA

■

OSCILLATOR STOP DETECTION

■

AUTOMATIC LEAP YEAR COMPENSATION

■

SOFTWARE PROGRAMMABLE OUTPUT

(OUT)

■

OPERATING TEMPERATURE OF –40 TO

85°C

■

LEAD-FREE 16-PIN QFN PACKAGE

■

TOTAL SURFACE AREA OF IC AND 32KHz

CRYSTAL IS 21.5mm2

Figure 1. Package

Figure 2. 32KHz Crystal + QFN16 vs. VSOJ20

Figure 3. 16-pin QFN Connections

Note: 1. Open Drain Output.

QFN16 (Q)

1

XI

2

XO

3

4

AI11107

ST QFN16

SMT

CRYSTAL

VSOJ20 (47.6mm2)

Guard Ring

(21.5mm2)

GND Plane

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

XI

XO

FT

(1)

VSS

NC

SCL

SDA

OFIRQ/OUT

(1)

AI08870

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