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Notes

No technical content pages of this document may be reproduced in any form or transmitted by any 
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard 
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein 
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM 
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of 
whatsoever nature in the event of any such infringement, or arising from or connected with or related 
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or 
otherwise dispose of the same, no express or implied right or license to practice or commercially 
exploit any intellectual property rights or other proprietary rights owned or controlled by 
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.

Appendix1-Rev2.0

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2008 ROHM CO.,LTD.

The products listed in this document are designed to be used with ordinary electronic equipment or devices 
(such as audio visual equipment, office-automation equipment, communications devices, electrical 
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level 
of reliability and the malfunction of which would directly endanger human life (such as medical 
instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers 
and other safety devices), please be sure to consult with our sales representative in advance.
It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance 
of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow 
for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in 
order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM 
cannot be held responsible for any damages arising from the use of the products under conditions out of the 
range of the specifications or due to non-compliance with the NOTES specified in this catalog.

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Summary of Contents for BH1715FVC

Page 1: ...ncy is little ex Incandescent Lamp Fluorescent Lamp Halogen Lamp White LED Sun Light 10 It is possible to select 2 type of I 2 C slave address 11 Adjustable measurement result for influence of optical...

Page 2: ...1 8V SCL SDA Input H Voltage 2 VIH2 1 26 V 1 65V DVI 1 8V SCL SDA Input L Voltage 1 VIL1 0 3 DVI V DVI 1 8V SCL SDA Input L Voltage 2 VIL2 DVI 1 26 V 1 65V DVI 1 8V SCL SDA ADDR Input H Current IIH 1...

Page 3: ...ite LED Ratio H Res L Res 0 8 16 24 32 40 48 56 64 0 8 16 24 32 40 48 56 64 Illuminance lx Measurement Result H Res L Res H Res 1pin 1pin 0 0 2 0 4 0 6 0 8 1 1 2 400 500 600 700 800 900 1000 1100 Wave...

Page 4: ...Measurement Time Register This is for registration of measurement time Initial Value is 0100_0101 z OSC Internal Oscillator typ 320kHz It is CLK for internal logic Measurement Procedure Power On Comma...

Page 5: ...Low bit 011_MT 4 3 2 1 0 Change measurement time Please refer adjust measurement result for influence of optical window Don t input the other opecode Measurement mode explanation Measurement Mode Mea...

Page 6: ...ommended Timing chart1 for VCC and DVI supply Timing chart2 for VCC and DVI supply If DVI rises within 1us after VCC supply VCC DVI Reset Term more than 1us VCC DVI Don t care state ADDR SDA SCL is no...

Page 7: ...rement mode is updated 120ms typ at H resolution mode 16ms typ at L resolution mode ex2 One time L resolution mode ADDR H Send One time L resolution mode instruction ST 1011100 0 Ack 00100011 Ack SP W...

Page 8: ...lease refer to the paragraph of Timing chart for VCC and DVI power supply sequence about the terminal ADDR design ex 1 The control signal line such as CPU is connected ex 2 Reset IC is used 1 For Rese...

Page 9: ...not enough long after turning off VCC It is necessary to consider DVI voltage level after turning off VCC Example of designing set when CR C 1uF R 1k is inserted between VCC and DVI with VCC 2 8V The...

Page 10: ...pt plural command without stop condition Please insert SP every 1 Opecode ST Slave Address R W 0 Ack Opecode Ack SP 4 Read Format ST Slave Address R W 1 Ack High Byte 15 8 2 15 2 14 2 13 2 12 2 11 2 1...

Page 11: ...ing High bit of Mtreg ST Slave Address R W 0 Ack 01000_100 Ack SP 2 Changing Low bit of Mtreg ST Slave Address R W 0 Ack 011_01010 Ack SP 3 Input Measurement Command ST Slave Address R W 0 Ack 0001_00...

Page 12: ...VCC 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...

Page 13: ...0 8 mm 1 3 mm PD area 0 25 mm x 0 3 mm Please design the optical window so that light can cover at least this area Min 0 4 mm Min 0 4 mm Min 0 4 mm Min 0 4 mm WSOF6 Unit mm A D Lot No Production code...

Page 14: ...st static electricity establish a ground for the assembly process and pay thorough attention to the transportation and the storage of the set PCB 6 Input terminals In terms of the construction of IC p...

Page 15: ...e 3000pcs The direction is the 1pin of product is at the upper right when you hold reel on the left hand and you pull out the tape on the right hand Tape and Reel information TR When you order please...

Page 16: ...ion design Appendix1 Rev2 0 Thank you for your accessing to ROHM product informations More detail product informations and catalogs are available please contact your nearest sales office ROHM Customer...

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