M41T60屬于集成電路（IC）的實時時鐘。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的M41T60實時時鐘實時時鐘 (RTC) 為幾乎所有需要保持精確時間的電子設(shè)備提供時間和/或日期信息。時鐘類型有二進(jìn)制計數(shù)器、時鐘/日歷/監(jiān)控器、歷時計時器、幻時鐘芯片、便攜式系統(tǒng)控制器、溫度記錄器、時間事件記錄器和計時器時鐘外設(shè)。其包含 2 B 至 2 MB 不等的存儲器，接口選項有 I2C、并行、串行、SPI、1 線式、2 線式、3 線式和 4 線式。

描述 Description

The M41T60 is a low power serial RTC with a built-in 32.768 kHz oscillator (external crystal controlled). Eight registers are used for the clock/calendar function and are configured in binary coded decimal (BCD) format. Addresses and data are transferred serially via a twoline bi-directional bus. The built-in address register is increased automatically after each WRITE or READ data byte.

特性 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