BH1750FVI-TR Rohm Semiconductor, BH1750FVI-TR Datasheet
BH1750FVI-TR
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BH1750FVI-TR Summary of contents
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... Ambient Light Sensor IC Series Digital 16bit Serial Output Type Ambient Light Sensor IC BH1750FVI ●Descriptions BH1750FVI is an digital Ambient Light Sensor IC for I data for adjusting LCD and Keypad backlight power of Mobile phone possible to detect wide range at High resolution 65535 lx ). ●Features bus Interface ( Mode Support ) ...
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... BH1750FVI ●Electrical Characteristics ( V = 3.0V, DVI = 3.0V 25℃, unless otherwise noted ) CC Parameter Supply Current Powerdown Current Peak Wave Length Measurement Accuracy Dark ( Sensor out H-Resolution Mode Resolution L-Resolution Mode Resolution H-Resolution Mode Measurement Time L-Resolution Mode Measurement Time Incandescent / Fluorescent Sensor out ratio ADDR Input ‘ ...
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... BH1750FVI ●Reference Data 1.2 1 0.8 0.6 0.4 0.2 0 400 500 600 700 800 900 1000 1100 Wavelength [ nm ] Fig.1 Spectral Response 1.2 1 1pin 0 0.6 0 0.2 0 -90 -60 - Angle [ deg ] Fig.4 Directional Characteristics 1 1.2 1 0.8 0.6 0.4 0.2 0 -40 - 100 Ta [ ℃ ] Fig.7 Measurement Accuracy ...
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... BH1750FVI ●Block Diagram PD ●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. 2 ・Logic + I C Interface Ambient Light Calculation and I Data Register → This is for registration of Ambient Light Data. Initial Value is "0000_0000_0000_0000". ...
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... BH1750FVI ●Instruction Set Architecture 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. ...
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... BH1750FVI ●Timing chart for VCC and DVI power supply sequence 2 DVI bus reference voltage terminal. And it is also asynchronous reset terminal necessary to set to 'L' after V supplied. In DVI 'L' term, internal state is set to Power Down mode. 1) Recommended Timing chart1 for VCC and DVI supply. ...
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... BH1750FVI ●Measurement sequence example from "Write instruction" to "Read measurement result" ex1) Continuously H-resolution mode ( ADDR = 'L' ) from Master to Slave ① Send "Continuously H-resolution mode " instruction ST 0100011 ② Wait to complete 1st H-resolution mode measurement.( max. 180ms. ) ③ Read measurement result 0100011 How to calculate when the data High Byte is "10000011" and Low Byte is "10010000" ...
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... ADDR DVI RESET 0.1µF SDA GND BH1750FVI 1kOhm VCC SCL ADDR DVI RESET 0.1µF SDA GND BH1750FVI VCC SCL ADDR DVI SDA V2 GND 0.1µF 8/17 Technical Note Micro Controller Reset IC( Push-Pull type ) Reset IC( Open drain type ) 2010.04 - Rev.C ...
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... Rise time of power supply : 100us or less 2.8V 0V Please do the application design to secure Reset section 1us or more after the reclosing of the power supply. * www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved 1kOhm BH1750FVI VCC SCL ADDR DVI C1 : 1µF GND SDA t2 Time to power supply reclosing : 25ms or more れ ...
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... Slave Address is 2 types determined by ADDR Terminal ADDR = ‘H’ ( ADDR ≧ 0.7VCC ) → “1011100“ ADDR = 'L' ( ADDR ≦ 0.3VCC ) → “0100011“ Write Format BH1750FVI is not able to accept plural command without stop condition. Please insert SP every 1 Opecode. Slave Address Read Format ...
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... BH1750FVI ●Adjust measurement result for influence of optical window. ( sensor sensitivity adjusting ) BH1750FVI is possible to change sensor sensitivity. And it is possible to cancel the optical window influence ( difference with / without optical window ) by using this function. Adjust is done by changing measurement time. For example, when transmission rate of optical window is 50% ( measurement result becomes 0.5 times if optical window is set ), influence of optical window is ignored by changing sensor sensitivity from default to 2 times Sensor sensitivity is shift by changing the value of MTreg ( measurement time regisiter ) ...
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... BH1750FVI ●H-Resolution Mode2 H-resolution mode2 is 0.5lx ( typ. ) resolution mode suitable if under less than 10 lx measure ment data is necessary. This measurement mode supports " Adjust measurement result for influence of optical window ". Please refer it possible to detect min. 0. using H-resolution mode2. ○ Instruction set architecture for H-resolution mode2 ...
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... C bus Interface SDA Terminal SDA, SCL Reference Voltage Terminal And DVI Terminal is also asynchronous Reset 150kΩ for internal registers.So that please set to ' least 1µs, DVI <= 0.4V ) after V supplied. BH1750FVI is pulled down by 150kOhm while DVI = 'L bus Interface SCL Terminal 13/17 Technical Note ...
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... BH1750FVI ●Package Outlines ●About an optical design on the device 0.8 mm Min.0.4 mm Min.0.4 mm Min.0.4 mm Min.0.4 mm www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. Lot No. Product No. WSOF6I ( Unit : area ( 0. 0 Please design the optical window so that light can cover at least this area. 14/17 Technical Note 2010 ...
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... BH1750FVI ●The method of distinguishing 1pin. There is some method of distinguishing 1pin. ① Distinguishing by 1Pin wide-lead ② Distinguishing by die pattern ③ Distinguishing by taper part of 1-3pin side ② (by die patern) is the easiest method to distinguish by naked eye. ① www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. ...
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... BH1750FVI ●Cautions on use 1) Absolute Maximum Ratings An excess in the absolute maximum ratings, such as supply voltage ( Vmax ), temperature range of operating conditions ( Topr ), etc., can break down devices, thus making impossible to identify breaking mode such as a short circuit or an open circuit. If any special mode exceeding the absolute maximum ratings is assumed, consideration should be given to take physical safety measures including the use of fuses, etc ...
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... BH1750FVI ●Ordering part number Part No. Part No. WSOF6I 1.6 ± 0.1 (MAX1.8 include BURR) 0.5 0.5 0.3 0 (1.2) (1. 0.525 0.5 0.3 0.275 S 0.08 S 0.27 ±0.05 0.22 ± 0.05 0.08 M www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved Package FVI: WSOF6I <Tape and Reel information> ...
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