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BL5372

Part Number	BL5372
Manufacturer	SHANGHAI BELLING
Description	Low-power real-time clock chip
Published	Dec 19, 2006
Detailed Description	SHANGHAI BELLING BL5372 Low Power Real-Time Clock (RTC) GENERAL DESCRIPTION The BL5372 is a CMOS type real-time clock,...
Datasheet	BL5372 PDF File

Overview

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.
The product also incorporates a time trimming circuit that adjusts the clock with higher precision by adjusting any errors in crystal oscillator frequencies based on signals from the CPU.
The crystal oscillator may be selected from 32KHz or 32.
768KHz types.
It adopts 8-pin SOP or TSSOP package.
FEATURES Lowest supply current: ...

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