BH1750FVI-TR Rohm Semiconductor, BH1750FVI-TR Datasheet - Page 5
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BH1750FVI-TR
Manufacturer Part Number
BH1750FVI-TR
Description
Industrial Optical Sensors Ambient Light Sensor Digital 16bit Serial
Manufacturer
Rohm Semiconductor
Type
Ambient Light Sensor with Digital Outputr
Series
-r
Datasheet
1.BH1750FVI-TR.pdf
(18 pages)
Specifications of BH1750FVI-TR
Product
Ambient Light Sensor
Wavelength
560nm
Output Type
I²C™
Package / Case
6-WSOF Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
BH1750FVI-TR
Manufacturer:
KEC
Quantity:
31 400
Part Number:
BH1750FVI-TR
Manufacturer:
ROHM/罗姆
Quantity:
20 000
●Instruction Set Architecture
●Measurement mode explanation
●Explanation of Asynchronous reset and Reset command "0000_0111"
© 2010 ROHM Co., Ltd. All rights reserved.
BH1750FVI
www.rohm.com
1) Asynchronous reset
2) Reset command
We recommend to use H-Resolution Mode.
Power Down
Power On
Reset
Continuously H-Resolution Mode
Continuously H-Resolution Mode2
Continuously L-Resolution Mode
One Time H-Resolution Mode
One Time H-Resolution Mode2
One Time L-Resolution Mode
Change Measurement time
Change Masurement time
※ Don't input the other opecode.
( High bit )
( Low bit )
Measurement time ( integration time ) of H-Resolution Mode is so long that some kind of noise( including in 50Hz / 60Hz
noise ) is rejected. And H-Resolution Mode is 1 l x resolution so that it is suitable for darkness ( less than 10 lx )
H-resolution mode2 is also suitable to detect for darkness.
All registers are reset. It is necessary on power supply sequence. Please refer "Timing chart for VCC and DVI power
supply sequence" in this page. It is power down mode during DVI = 'L'.
Reset command is for only reset Illuminance data register. ( reset value is '0' ) It is not necessary even power supply
sequence.It is used for removing previous measurement result. This command is not working in power down mode, so
that please set the power on mode before input this command.
Measurement Mode
H-resolution Mode2
H-Resolution Mode
L-Resolution Mode
Instruction
Measurement Time.
Typ. 120ms.
Typ. 120ms.
Typ. 16ms.
011_MT[4,3,2,1,0]
01000_MT[7,6,5]
0000_0000
0000_0001
0001_0000
0001_0001
0010_0000
0010_0001
0001_0011
0010_0011
0000_0111
Opecode
Resolurtion
5/17
0.5 lx
No active state.
Waiting for measurement command.
Reset Data register value. Reset command is not acceptable in
Power Down mode.
Start measurement at 1lx resolution.
Measurement Time is typically 120ms.
Start measurement at 0.5lx resolution.
Measurement Time is typically 120ms.
Start measurement at 4lx resolution.
Measurement Time is typically 16ms.
Start measurement at 1lx resolution.
Measurement Time is typically 120ms.
It is automatically set to Power Down mode after measurement.
Start measurement at 0.5lx resolution.
Measurement Time is typically 120ms.
It is automatically set to Power Down mode after measurement.
Start measurement at 4lx resolution.
Measurement Time is typically 16ms.
It is automatically set to Power Down mode after measurement.
Change measurement time.
Change measurement time.
※ Please refer "adjust measurement result for influence of optical window."
1 lx.
4 lx.
※ Please refer "adjust measurement result for influence of optical window."
Comments
Technical Note
2010.04 - Rev.C