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
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