SUMMARY DESCRIPTION

The M41T50 Serial Access TIMEKEEPER? is a low power Serial RTC that does not require a crystal. The clock operates from a digital clock input pin at 50Hz or 60Hz. Eight registers (see Table 2., page 12) are used for the clock/calendar function and are configured in binary coded decimal (BCD) format. An additional 8 registers provide status/control of Alarm, Square Wave (1Hz), and 50Hz or 60Hz digital clock frequency selection functions. Addresses and data are transferred serially via a two line, bi-directional I2C interface.

FEATURES SUMMARY

■ TIMEKEEPING DOWN TO 1.3V

■ 1.7V TO 3.6V I2C BUS OPERATING VOLTAGE

■ OPERATES FROM 50Hz OR 60Hz DIGITAL CLOCK SIGNAL

■ COUNTERS FOR SECONDS, MINUTES, HOURS, DAY, DATE, MONTH, YEAR, AND CENTURY

■ SERIAL INTERFACE SUPPORTS I2C BUS (400kHz)

■ PROGRAMMABLE ALARM AND INTERRUPT FUNCTION

■ 1Hz SQUARE WAVE OUTPUT

■ LOW OPERATING CURRENT OF 350μA

■ AUTOMATIC LEAP YEAR COMPENSATION

■ SOFTWARE PROGRAMMABLE OUTPUT (OUT)

■ OPERATING TEMPERATURE OF –40 TO 85°C

■ LEAD-FREE 16-PIN QFN PACKAGE

M41T50Q6F屬于集成電路（IC） > 實(shí)時(shí)時(shí)鐘。意法半導(dǎo)體（ST）集團(tuán)制造生產(chǎn)的M41T50Q6F實(shí)時(shí)時(shí)鐘實(shí)時(shí)時(shí)鐘 (RTC) 為幾乎所有需要保持精確時(shí)間的電子設(shè)備提供時(shí)間和/或日期信息。時(shí)鐘類型有二進(jìn)制計(jì)數(shù)器、時(shí)鐘/日歷/監(jiān)控器、歷時(shí)計(jì)時(shí)器、幻時(shí)鐘芯片、便攜式系統(tǒng)控制器、溫度記錄器、時(shí)間事件記錄器和計(jì)時(shí)器時(shí)鐘外設(shè)。其包含 2 B 至 2 MB 不等的存儲(chǔ)器，接口選項(xiàng)有 I2C、并行、串行、SPI、1 線式、2 線式、3 線式和 4 線式。