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| 型号： | BH1750FVI-TR |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 5/20页 |
| 文件大小： | 0K |
| 描述： | IC AMBIENT LIGHT SENSOR WSOF6 |
| 特色产品： | Ambient Light Sensor ICs |
| 标准包装： | 1 |
| 带接近传感器： | 无 |
| 波长： | 560nm |
| 电源电压： | 2.4 V ~ 3.6 V |
| 输出类型： | I²C? |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-SMD，扁平引线裸焊盘 |
| 包装： | 标准包装 |
| 其它名称： | BH1750FVI-DKR BH1750FVI-DKR-ND BH1750FVIDKR |
BH1750FVI
● Instruction Set
Architecture
Technical Note
Instruction
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
( High bit )
Change Masurement time
( Low bit )
※ Don't input the other opecode.
● Measurement mode explanation
Opecode
0000_0000
0000_0001
0000_0111
0001_0000
0001_0001
0001_0011
0010_0000
0010_0001
0010_0011
01000_MT[7,6,5]
011_MT[4,3,2,1,0]
Comments
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.
※ Please refer "adjust measurement result for influence of optical window."
Change measurement time.
※ Please refer "adjust measurement result for influence of optical window."
Measurement Mode Measurement Time.
Resolurtion
H-resolution Mode2
H-Resolution Mode
L-Resolution Mode
Typ. 120ms.
Typ. 120ms.
Typ. 16ms.
0.5 lx
1 lx.
4 lx.
We recommend to use H-Resolution Mode.
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.
● Explanation of Asynchronous reset and Reset command "0000_0111"
1) Asynchronous reset
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'.
2) Reset command
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.
www.rohm.com
? 2011 ROHM Co., Ltd. All rights reserved.
5/17
2011.11 - Rev.D
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