M41T56C64 clock equivalent, serial real time clock.
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Counters for seconds, minutes, hours, day, date, month, years, and century Embedded crystal package Software clock calibration Automatic power-fail detect and swit.
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1.1 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
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Pin settings . . . . . . . . . . . . . . . . . ..
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