RV-8564 datasheet(18/40 Pages) MICROCRYSTAL

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RV-8564 데이터시트(PDF) 18 Page - MICORO CRYSTAL SWITZERLAND

부품명	RV-8564

상세설명	I2C-Bus Interface Real Time Clock

PDF	40 Pages

Scroll/Zoom	100%

제조업체	MICROCRYSTAL [MICORO CRYSTAL SWITZERLAND]

홈페이지	http://www.microcrystal.com

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18 / 40 page

Micro Crystal

Real Time Clock / Calendar Module

RV-8564

18/40

9.2. VOLTAGE LOW DETECTOR AND CLOCK MONITOR

The RV-8564 has an on-chip voltage low detector. When VDD drops below VLOW, the VL (Voltage Low) flag is set to

indicate that the integrity of the clock information is no longer guaranteed. The VL flag can only be cleared by using

the interface.

The VL flag is intended to detect the situation when VDD is decreasing slowly; for example under battery operation.

Should the oscillator stop or VDD reach VLOW before power is reasserted, then the VL flag will be set. This indicates

that the time is possibly corrupted.

9.3. SETTING AND READING THE TIME

Data flow and data dependencies starting from 1 Hz clock tick

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