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•Built in frequency adjusted 32.768 kHz crystal unit.
•Interface Type : 3-wire serial interface
•Operating voltage range : 1.6 V to 5.5 V
•The wide voltage for time keeping. : 1.0 V to 5.5 V / T a = +25 °C
•Low backup current : 0.32 µA ( Typ. ) / 3 V
•32.768 kHz frequency output function : C-MOS output With OE pin.
•Real-time clock function
Clock/calendar function, auto leap year correction function,
alarm and Timer interrupt function, etc.