M41T00SM6F集成電路（IC）的實時時鐘規(guī)格書PDF中文資料

M41T00SM6F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M41T00SM6F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。

Description

The M41T00S Serial Access TIMEKEEPER? SRAM is a low power serial RTC with a built in 32.768 kHz oscillator (external crystal controlled). Eight bytes of the SRAM (see Table 2 on page 13) are used for the clock/calendar function and are configured in binary coded decimal (BCD) format. Addresses and data are transferred serially via a two line, bidirectional I2C interface. The built-in address register is incremented automatically after each WRITE or READ data byte.

The M41T00S has a built-in power sense circuit which detects power failures and automatically switches to the battery supply when a power failure occurs. The energy needed to sustain the clock operations can be supplied by a small lithium button supply when a power failure occurs. The eight clock address locations contain the century, year, month, date, day, hour, minute, and second in 24-hour BCD format. Corrections for 28, 29 (leap year - valid until year 2100), 30 and 31 day months are made automatically. The M41T00S is supplied in an 8-pin SOIC.

Features

■ 2.0 to 5.5 V clock operating voltage

■ Counters for seconds, minutes, hours, day, date, month, year, and century

■ Software clock calibration

■ Automatic switchover and deselect circuitry (fixed reference)

– VCC = 2.7 to 5.5 V

2.5V ≤ VPFD ≤ 2.7 V

■ Serial interface supports I2C bus (400 kHz protocol)

■ Low operating current of 300 μA

■ Oscillator stop detection

■ Battery or SuperCap? backup

■ Operating temperature of –40 to 85°C

■ Ultra-low battery supply current of 1 μA