M41T0 - Serial real-time clock
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5 2 Operation .
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7 2.1 2-wire bus characteristics .
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M41T0 Features
* Counters for seconds, minutes, hours, day, date, month, years, and century
* 32 KHz crystal oscillator integrating load capacitance (12.5 pF) providing exceptional oscillator stability and high crystal series resistance operation
* Oscillator stop detection monitors clock operation