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SHANGHAI BELLING
BL5372 Low Power Real-Time Clock (RTC)
GENERAL DESCRIPTION
The BL5372 is a CMOS type real-time clock, which is connected to the CPU via two wires and capable of serial transmission of clock to the CPU. The BL5372 can generate various periodic interrupt clock pulses lasting for long period (one month), and alarm interrupt can be made by two incorporated systems. Since an oscillation circuit is driven at a constant voltage, it undergoes fluctuations of few voltage and consequently offers low current consumption (TYP. 400nA @ 5V)
It also provides an oscillator halt sensing function applicable for data validation at power-on and other occasions.