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SUMMARY DESCRIPTION

The M41T0 TIMEKEEPER? RAM is a low power Serial TIMEKEEPER with a built-in 32.768kHz 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 two-line bi-directional bus. The built-in address register is incremented automatically after each WRITE or READ data byte.

The M41T0 is supplied in 8 lead Plastic Small Outline package.

FEATURES SUMMARY

■ 2.0 TO 5.5V CLOCK OPERATING VOLTAGE

■ COUNTERS FOR SECONDS, MINUTES, HOURS, DAY, DATE, MONTH, YEARS, and CENTURY

■ YEAR 2000 COMPLIANT

■ I2C BUS COMPATIBLE (400kHz)

■ LOW OPERATING CURRENT OF 130μA

■ OPERATING TEMPERATURE OF –40 TO 85°C

■ AUTOMATIC LEAP YEAR COMPENSATION

■ SPECIAL SOFTWARE PROGRAMMABLE OUTPUT

■ OSCILLATOR STOP DETECTION