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9

BH1750FVI

Technical Note

13/17

www.rohm.com

2009.04- Rev.B

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

●Terminal Description

PIN No. Terminal Name Equivalent Circuit Function

1 VCC Power Supply Terminal

2 ADDR

I

2

C Slave-address Terminal

ADDR = ‘H’ ( ADDR ≧ 0.7VCC )

“1011100“

ADDR = 'L' ( ADDR ≦ 0.3V

CC )

“0100011“

ADDR Terminal is designed as 3 state buffer for

internal test. So that please take care of V

CC

and DVI supply procedure.Please see P6.

3 GND

GND Terminal

4 SDA

I

2

C bus Interface SDA Terminal

5 DVI

SDA, SCL Reference Voltage Terminal

And DVI Terminal is also asynchronous Reset

for internal registers.So that please set to 'L'

( at least 1µs, DVI <= 0.4V ) after V

CC is

supplied. BH1750FVI is pulled down by

150kOhm while DVI = 'L'.

6 SCL

I

2

C bus Interface SCL Terminal

※These values are design-value, not guaranteed.

150kΩ

VCC