M41T63 datasheet(1/33 Pages) STMICROELECTRONICS

Part #	M41T63

Description	Serial Access Real-Time Clock with Alarms

PDF	33 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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1 / 33 page

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May 2005

M41T62, M41T63

M41T64, M41T65

Serial Access Real-Time Clock with Alarms

FEATURES SUMMARY

■

350nA TIMEKEEPING CURRENT @ 3V

■

TIMEKEEPING DOWN TO 1.0V

■

1.3V TO 3.6V I2C BUS OPERATING

VOLTAGE

■

COUNTERS FOR TENTHS/HUNDREDTHS

OF SECONDS, SECONDS, MINUTES,

HOURS, DAY, DATE, MONTH, YEAR, AND

CENTURY

■

SERIAL INTERFACE SUPPORTS I2C BUS

(400kHz)

■

PROGRAMMABLE ALARM WITH FLAG BIT

ONLY (M41T63/64)

■

PROGRAMMABLE ALARM WITH FLAG BIT

AND INTERRUPT FUNCTION (M41T62/65)

■

LOW OPERATING CURRENT OF 35µA

■

SOFTWARE CLOCK CALIBRATION

■

OSCILLATOR STOP DETECTION

■

32KHz SQUARE WAVE ON POWER-UP

(M41T62/63/64)

■

WATCHDOG TIMER

■

WATCHDOG OUTPUT (M41T63/65)

■

AUTOMATIC LEAP YEAR COMPENSATION

■

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

Table 1. Device Options

QFN16 (Q)

3mm x 3mm

1

XI

2

XO

3

4

AI11107

ST QFN16

SMT

CRYSTAL

VSOJ20 (47.6mm2)

Guard Ring

(21.5mm2)

GND Plane

Basic RTC

Alarms

OSC Fail

Detect

Watchdog

Timer

Calibration

SQW

Output

IRQ

Output

WDO

Output

F32K

Output

M41T62

✔✔

✔

M41T63

✔✔

✔

M41T64

✔✔

✔

M41T65

✔✔

✔

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M41T63 Datasheet(PDF) 1 Page - STMicroelectronics

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