Datasheet > M41T62_10

M41T62_10

更新时间： 2022-03-04 09:57:40

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		时钟
页数	文件大小	规格书
41页	692K
描述
Serial real-time clocks with alarm

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数据手册

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M41T62_10 数据手册

M41T62, M41T63

M41T64, M41T65

Serial real-time clocks with alarm

Features

■ Serial RTC with alarm functions

3mm

– 400 kHz I C serial interface

3mm

– Memory mapped registers for seconds,

minutes, hours, day, date, month, year, and

century

– Tenths/hundredths of seconds register

■ 350 nA timekeeping current at 3 V

■ Timekeeping down to 1.0 V

QFN16 (Q)

3 mm x 3 mm

■ 1.3 V to 4.4 V I C bus operating voltage

– 4.4 V max V suitable for lithium-ion

battery operation

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

■ Accurate programmable watchdog

■ 32 KHz square wave output is on at power-up.

Suitable for driving a microcontroller in low-

power mode. Can be disabled.

– 62.5 ms to 31 min timeout

■ Software clock calibration. Can adjust

timekeeping to within 2 parts per million ( 5

seconds per month)

(M41T62/63/64)

■ Programmable 1 Hz to 32 KHz square wave

output (M41T62/63/64)

■ Automatic leap year compensation

■ –40 to +85 °C operation

■ Programmable alarm with interrupt function

(M41T62/65)

■ Very small 3 mm x 3 mm, Lead-free

■ 32 KHz crystal oscillator integrates crystal load

capacitors, works with high series resistance

crystals

16-lead QFN

■ Oscillator stop detection monitors clock

operation

Table 1.

Device summary

Basic RTC Alarms

F_32K

OSC fail

detect

Watchdog

timer

SQW

IRQ

WDO

Calibration

output output output

output

M41T62

M41T63

M41T64

M41T65

✔

May 2010

Doc ID 10397 Rev 14

1/41

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