BH1750FVI(2009) Ver la hoja de datos (PDF) - ROHM Semiconductor

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componentes Descripción

Fabricante

BH1750FVI
(Rev.:2009)

Ambient Light Sensor IC Series Digital 16bit Serial Output Type Ambient Light Sensor IC

ROHM Semiconductor 

BH1750FVI

Technical Note

●Timing chart for VCC and DVI power supply sequence

DVI is I2C bus reference voltage terminal. And it is also asynchronous reset terminal. It is necessary to set to 'L' after VCC is

supplied. In DVI 'L' term, internal state is set to Power Down mode.

1) Recommended Timing chart1 for VCC and DVI supply.

VCC

DVI

Reset Term ( more than 1us )

2) Timing chart2 for VCC and DVI supply.

( If DVI rises within 1µs after VCC supply )

VCC

DVI

Reset Term ( more than 1us )

Don't care state

ADDR, SDA, SCL is not stable if DVI 'L' term ( 1us ) is not given by systems.

In this case, please connect the resisters ( approximately 100kOhm ) to ADDR without directly

connecting to VCC or GND,

because it is 3 state buffer for Internal testing.

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© 2009 ROHM Co., Ltd. All rights reserved.

6/17

2009.04- Rev.B

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