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

Número de pieza

componentes Descripción

Fabricante

BH1750FVI

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

ROHM Semiconductor 

BH1750FVI

●Block Diagram

VCC

DVI

Technical Note

AMP

PD

ADC

Logic

+

I2C Interface

OSC

GND

ADDR

SCL

SDA

●Block Diagram Descriptions

・PD

Photo diode with approximately human eye response.

・AMP

Integration-OPAMP for converting from PD current to Voltage.

・ADC

AD converter for obtainment Digital 16bit data.

・Logic + I2C Interface

Ambient Light Calculation and I2C BUS Interface. It is including below register.

Data Register → This is for registration of Ambient Light Data. Initial Value is "0000_0000_0000_0000".

Measurement Time Register → This is for registration of measurement time. Initial Value is "0100_0101".

・OSC

Internal Oscillator ( typ. 320kHz ). It is CLK for internal logic.

●Measurement Procedure

State is automatically changed to

Power Down mode.

Power supply

Initial state is Power Down mode after

VCC and DVI supply.

Power Down

Power On

Measurement Command

One Time Measurement

Continuous Measurement

State Transition by I2C write-command.

Automatically State Transition

* "Power On" Command is possible to omit.

www.rohm.com

© 2011 ROHM Co., Ltd. All rights reserved.

4/17

2011.11 - Rev.D

Share Link: