Ambient Light Sensor IC Series Digital 16bit Serial Output Type Ambient Light Sensor IC BH1721FVC No.10046EAT10 ●Descriptions 2 BH1721FVC is an digital Ambient Light Sensor IC for I C bus interface. This IC is the most suitable to obtain the ambient light data for adjusting LCD and Keypad backlight power of Mobile phone. It is possible to detect wide range at High resolution. ( 1 - 65528 lx ). ●Features 2 1) I C bus Interface ( f / s Mode Support, Slave Address : "0100011" ) 2) Spectral responsibility is approximately human eye response 3) Illuminance to Digital Converter 4) Wide range and High resolution. (1 – 65528 lx ) 5) Low Current by power down function 6) 50Hz / 60Hz Light noise reject-function 7) 1.8V Logic input interface 8) No need any external parts 9) Light source dependency is little. (ex. Incandescent Lamp. Fluorescent Lamp. Halogen Lamp. White LED. Sun Light) 10) Small measurement variation (+/- 15%) 11) Compact surface mount package 1.6 x 1.6 x 0.55 mm ●Applications Mobile phone, LCD TV, NOTE PC, Portable game machine, Digital camera, Digital video camera, Car navigation, PDA, LCD display ●Absolute Maximum Ratings Parameter Symbol Limits Units Supply Voltage Vmax 4.5 V Operating Temperature Topr -40～85 ℃ Storage Temperature Tstg -40～100 ℃ SDA Sink Current Imax 7 mA Power Dissipation Pd 165※ mW ※70mm × 70mm × 1.6mm glass epoxy board. Derating in done at 2.2mW/℃ for operating above Ta=25℃. ●Operating Conditions Parameter Symbol Min. Typ. Max. Units Vcc 2.4 3.0 3.6 V VDVI 1.65 - VCC V VCC Voltage 2 I C Reference Voltage www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 1/15 2010.02 - Rev.A BH1721FVC Technical Note ●Electrical Characteristics ( VCC = 3.0V, DVI = 3.0V, Ta = 25℃, unless otherwise noted ) Parameter Units Conditions Symbol Min. Typ. Max. Supply Current Icc1 － 140 199 µA Ev = 100 lx Powerdown Current Icc2 － 0.01 1.0 µA No input Light Peak Wave Length λp － 560 － nm Measurement Accuracy S/A 1.02 1.2 1.38 times Dark ( 0 lx ) Sensor out S0 0 0 2 H-Resolution Mode Resolution rHR － 1 － lx L-Resolution Mode Resolution rLR － 8 － lx H-Resolution Mode Measurement Time tHR － 120 180 ms L-Resolution Mode Measurement Time tLR － 16 24 ms Incandescent / Fluorescent Sensor out ratio rIF － 1 － DVI Input ‘L’ Voltage VDVL － － 0.4 V SCL, SDA Input ‘H’ Voltage 1 VIH1 0.7 * DVI － － V DVI ≧ 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, Input ‘H’ Current IIH － － 10 µA SCL, SDA, Input ‘L’ Current IIL － － 10 µA I2C SCL Clock Frequency fSCL － － 400 kHz I2C Bus Free Time tBUF 1.3 － － µs I2C Hold Time ( repeated ) START Condition tHDSTA 0.6 － － µs I2C Set up time for a Repeated START Condition tSUSTA 0.6 － － µs I2C Set up time for a Repeated STOP Condition tSUSTO 0.6 － － µs I2C Data Hold Time tHDDAT 0 － － µs I2C Data Valid Time tVDDAT － － 0.9 µs I2C Data Valid Acknowledge Time tVDACK － － 0.9 µs I2C Data Setup Time tSUDAT 100 － － ns I2C ‘L’ Period of the SCL Clock tLOW 1.3 － － µs I2C ‘H’ Period of the SCL Clock tHIGH 0.6 － － µs VOL 0 － 0.4 V I2C SDA Output ‘L’ Voltage ※1 Sensor out / Actual lx EV = 1000 lx ※1, ※2 count H-Resolution Mode ※3 times EV = 1000 lx IOL = 3 mA ※1 White LED is used as optical source. ※2 Measurement Accuracy typical value is possible to change '1' by "Measurement result adjustment function". ※3 Use H-Resolution Mode if dark data ( less than 20 lx ) is need. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 2/15 2010.02 - Rev.A BH1721FVC Technical Note ●Reference Data 100000 64 1.2 56 Ratio 0.8 0.6 0.4 10000 48 Measurement Result Measurement Result 1.0 40 32 H-Res. 24 16 L-Res. 0.2 1000 100 10 8 0.0 400 500 600 700 800 900 1000 0 1100 0 Wavelength [ nm ] 8 16 24 32 40 Illuminance [ lx ] 48 56 1 1.2 1 0.8 + Ratio + 0.6 - 0.6 1pin - 0.4 0.4 - + 0.2 6 4 2 + 0.2 H-Res. + 0 0 -90 -60 -30 0 30 60 0 90 -90 -60 -30 Angle [ deg ] 0 30 60 90 -40 1.2 0 Fig.5 Directional Characteristics 2 60 80 100 Fig.6 Dark Response ICC @ Measurement 0.8 Halogen Light 0.6 Kripton Light Artifical Sun Light 0.2 40 200 Incandescent Light 0.4 20 Ta [ ℃ ] Fluorescent Light 1 Ratio -20 Angle [ deg ] Fig.4 Directional Characteristics 1 10000 100000 8 Measurement Result - 1000 10 1pin 0.8 100 Fig.3 Illuminance Measuremnet Result 2 1.2 1 10 Illuminance [ lx ] Fig.2 Illuminance Measurement Result 1 Fig.1 Spectral Response Ratio 1 64 150 100 50 White LED 0 0 -40 -20 0 20 40 60 80 100 0 Ta [ ℃ ] 1 Ratio 1.5 2 2 Fig.8 Light Source Dependency (Fluorescent Light is set to ‘1’) Fig.7 Measurement Result Temperature Dependency 2.5 VCC=3V 0.8 Ratio Ratio 0.8 0.6 0.2 0.2 0 0 -40 -20 0 20 40 60 80 100 Ta [ ℃ ] Fig.10 VCC – ICC@0 lx (POWER DOWN) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 0.6 0.4 0.4 0.01 4 1 DVI=1.8V 0.1 3.5 1.2 1 1 3 VCC [ V ] Fig.9 VCC – ICC (During measurement) 1.2 10 ICC @ POWER DOWN [ uA ] 0.5 2 2.5 3 3.5 VCC [ V ] Fig.11 Measurement Result VCC Dependency 3/15 4 1.5 2 2.5 3 3.5 DVI [ V ] Fig.12 Measurement Result DVI Dependency 2010.02 - Rev.A BH1721FVC Technical Note ●Block Diagram DVI VCC AMP ADC Logic + I C Interface 2 SCL SDA PD OSC GND ●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 I2C BUS Interface. It is including below register. Data Register → This is for registration of Ambient Light Data. Initial Value is "0000_0000_0000_0000". Measurement Time Register → This is for registration of measurement time. Initial Value is "01_0010_1100". ・OSC Internal Oscillator. It is CLK for internal logic. ●Measurement Procedure Power supply Initial state is Power Down mode after VCC and DVI supply. Power Down Power On Measurement command State Transition by I2C write-command. Automatically State Transition Continuous measurement * "Power On" Command is possible to omit. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 4/15 2010.02 - Rev.A BH1721FVC Technical Note ●Instruction Set Architecture Instruction Opecode Comments Power Down 0000_0000 No active state. Power On 0000_0001 Waiting for measurement command. Continuously Auto-Resolution Mode 0001_0000 0010_0000 Switch measurement mode automatically by illuminance. Continuously H-Resolution Mode 0001_0010 0010_0010 Start measurement at 1lx resolution. Measurement Time is typically 120ms. Continuously L-Resolution Mode 0001_0011 0001_0110 0010_0011 0010_0110 Start measurement at 8lx resolution. Measurement Time is typically 16ms. Change Measurement time ( High bit ) 010_MT[9,8,7,6,5] Change Masurement time ( Low bit ) 011_MT[4]_XXXX 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." ※ Don't input the other opecode. ●Measurement mode explanation Measurement Mode Measurement Time. H-Resolution Mode L-Resolution Mode Measurement Range. Resolution Typ. 120ms 0 - 8191 lx 1 lx Typ. 16ms 0 - 65528 lx 8 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 lx resolution so that it is suitable for darkness (less than 20 lx) Auto-Resolution mode selects measurement mode automatically. It is determined after 16ms (typ.) passes from measurement start. If BH1721FVC judges that current illuminance is more than 4000 lx, then Data is output at L-resolution mode, else Data is output after 120ms(typ.) from measurement start at H-resolution mode. Please refer below flow chart. Start after 16ms.(typ.) Select mode Lux <= 4000 Lux > 4000 DATA output at L-resolution mode Data output at H-resolution mode after 120ms passes from measurement start. Auto-Resolution mode measurement www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 5/15 2010.02 - Rev.A BH1721FVC Technical Note ●Timing chart for VCC and DVI power supply sequence DVI is I2C bus reference voltage terminal. And it is also asynchronous reset terminal. It is necessary to set to ‘L’ after VCC is supplied. In DVI 'L' term, internal state is set to Power Down mode. 1) Recommended Timing chart1 for VCC and DVI supply. VCC DVI Reset Term (more than 1µs) 2) Timing chart2 for VCC and DVI supply. (If DVI rises within 1µs after VCC supply) VCC DVI Reset Term (more than 1µs) Don't care state www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 6/15 2010.02 - Rev.A BH1721FVC Technical Note ●Measurement sequence example from "Write instruction" to "Read measurement result" ex1) Continuously Auto-resolution mode from Slave to Master from Master to Slave ① Send "Continuously Auto-resolution mode " instruction ST 0100011 ② Wait to complete 1st 0 Ack 00010000 Ack SP Auto-resolution mode measurement.( max. 180ms ) ③ Read measurement result. ST 0100011 1 Ack Low Byte [ 7:0 ] High Byte [ 15:8 ] Ack Ack SP How to calculate when the data High Byte is "10000011" and Low Byte is "10010000" 15 9 8 7 4 ( 2 + 2 + 2 + 2 + 2 ) / 1.2 ≒ 28067 [ lx ] The result of continuously measurement mode is updated. ex2) Continuously L-resolution mode ① Send " Continuously L-resolution mode " instruction ST 0100011 0 Ack 00010011 Ack SP ② Wait to complete L-resolution mode measurement.( max. 24ms ) ③ Read measurement result ST 0100011 1 Ack Low Byte [ 7:0 ] High Byte [ 15:8 ] Ack Ack SP How to calculate when the data High Byte is "00000001" and Low Byte is "00010000" 8 4 ( 2 + 2 ) / 1.2 ≒ 227 [ lx ] www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 7/15 2010.02 - Rev.A BH1721FVC Technical Note ●Application circuit example of DVI terminal The DVI terminal is an asynchronous reset terminal. Please note that there is a possibility that IC doesn't operate normally if the reset section is not installed after the start-up of VCC. (Please refer to the paragraph of "Timing chart for VCC and DVI power supply sequence”) The description concerning SDA and the terminal SCL is omitted in this application circuit example. Please design the 2 application the standard of the I C bus as it finishes being satisfactory. ex 1) The control signal line such as CPU is connected. BH1721FVC VCC SCL 0.1µF Micro Controller GND 0.1µF SDA DVI 0.1µF ex 2) Reset IC is used. 1, For Reset IC of the Push-Pull type BH1721FVC VCC SCL 0.1µF RESET GND 0.1µF SDA DVI Reset IC( Push-Pull type ) 0.1µF 2, For Reset IC of the Open drain output BH1721FVC VCC SCL 0.1µF 1kΩ RESET GND 0.1µF SDA DVI Reset IC( Open drain type ) 0.1µF ex 3) A different power supply is used. BH1721FVC VCC SCL 0.1µF V1 GND 0.1µF SDA DVI V2 0.1µF ※ Power supply of DVI must stand up later than power supply of VCC stand up, because it is necessary to secure reset section ( 1µs or more ). www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 8/15 2010.02 - Rev.A BH1721FVC Technical Note ex 4) LPF using CR is inserted between VCC and DVI. This method has the possibility that the Reset section of turning on the power supply can not satisfied. Cannot be satisfied. Please design the set considering the characteristic of the power supply enough. R1 : 1kΩ BH1721FVC VCC SCL 0.1µF GND 0.1µF SDA DVI C1 : 1µF ◆ Notes when CR is inserted between VCC and DVI ※Please note that there is a possibility that reset section ( 1µs ) can not be satisfied because the power supply is turned on when the rise time of VCC is slow ※When VCC is turned off, the DVI voltage becomes higher than VCC voltage but IC destruction is not occred if recommended constant ( R1 = 1kΩ, C1 = 1µF ) is used. ※Please note that there is a possibility that Reset section (1µsec) cannot be satisfied if wait time is not enough long after turning off VCC. (It is necessary to consider DVI voltage level after turning off VCC.) t1 VCC t2 DVI 2.4V 0.4V 0V Reset Section: 1µs or more * Please do the application design to secure Reset section 1µs or more after the reclosing of the power supply. ◆ Example of designing set when CR ( C = 1µF, R = 1kΩ ) is inserted between VCC and DVI with VCC=2.8V ①The rise time to 0→2.4V of VCC must use the power supply of 100µs or less. ②Please wait 25ms or more after VCC turn off ( VCC <= 0.05V ), because it is necessary to secure reset section (1µs or more). Rise time of power supply: 100µs or less Time to power supply reclosing: 25ms or more VCC DVI 2.8V 2.4V 0.4V 0V 0V 0.05V Reset Section: 1µs or more * Please do the application design to secure Reset section 1µs or more after the reclosing of the power supply. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 9/15 2010.02 - Rev.A BH1721FVC Technical Note ●I2C Bus Access 1 ) I2C Bus Interface Timing chart 2 Write measurement command and Read measurement result are done by I C Bus interface. Please refer the formally 2 specification of I C Bus interface, and follow the formally timing chart. SDA tSU ; DAT tr tf tf tHD ; STA HD tLOW tr tBUF SCL tSU ; STA tHD ; STA S tSU;STO Sr tHIGH t tHD ; DAT P S 2 ) Write Format BH1721FVC is not able to accept plural command without stop condition. Please insert SP every 1 Opecode. ST Slave Address "0100011" R/W 0 Ack Slave Address "0100011" R/W 1 Ack Opecode Ack SP 3 ) Read Format ST 27 26 Low Byte [7:0] 25 24 23 22 15 2 21 20 High Byte [15:8] 214 213 212 211 210 29 28 Ack Ack SP from Slave to Master from Master to Slave ex ) High Byte = "1000_0011" Low Byte = "1001_0000" 15 9 8 7 4 ( 2 + 2 + 2 + 2 + 2 ) / 1.2 ≒ 28067 [ lx ] * Please refer formality I2C bus specification of NXP semiconductors. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 10/15 2010.02 - Rev.A BH1721FVC Technical Note ●Adjust measurement result for influence of optical window. (sensor sensitivity adjusting ) BH1721FVC 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 register). MTreg value has to set 2 times if target of sensor sensitivity is 2 times. Measurement time is also set 2 times when MTreg value is changed from default to 2 2 times. Low 4bit value is fixed”1100”. Please change high 6bit value of this register via to I C Bus interface. ex) Procedure for changing target sensor sensitivity to 2 times. Please change Mtreg from”01_0010_1100” (default) to”10_0101_1100” (default * 2). 1) Changing High bit of Mtreg Slave Address ST R/W 0 Ack 010_10010 Ack SP R/W 0 Ack 011_1XXXX Ack SP 2) Changing Low bit of Mtreg Slave Address ST * X value is ignore. 3) Input Measurement Command. Slave Address ST R/W 0 Ack 0001_0000 Ack SP * This example is High Resolution mode, but it accepts the other measurement. 4) After about 240ms, measurement result is registered to Data Register. (High Resolution mode is typically 120ms, but measurement time is set twice. ) The below table is seeing the changeable range of MTreg. Min. changeable range of MTreg Typ. Max. binary 00_1000_1100 ( sensitivity : default * 0.47 ) 01_0010_1100 default 11_1111_1100 ( sensitivity : default * 3.40 ) decimal 140 ( sensitivity : default * 0.47 ) 300 default 1020 ( sensitivity : default * 3.40 ) It is possible to detect 0.25lx by using this function at H-resolution mode. The below formula is to calculate illuminance per 1 count. Illuminance per 1 count (lx / count) = 1 / 1.2 *(300 / X) 1.2 : Measurement accuracy 300 : Default value of MTreg ( dec ) X : MTreg value The below table is seeing the detail of resolution. MTreg value lx / count 00_1000_1100 1.79 01_0010_1100 0.83 11_1111_1100 0.25 Please input the opecode at PowerDown state to change Mtreg.There is a possibility of malfunctioning when the opecode to change Mtreg is input while the illuminance measurement is going . www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 11/15 2010.02 - Rev.A BH1721FVC Technical Note ●Terminal Description PIN Terminal Name No. Equivalent Circuit Function 1 VCC Power Supply Terminal 2 GND GND Terminal 3 SDA 2 I C bus Interface SDA Terminal 4 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 VCC is supplied. BH1721FVC is pulled down by 150kΩ while DVI = 'L'. 5 SCL 150kΩ 2 I C bus Interface SCL Terminal ※These values are design-value, not guaranteed. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 12/15 2010.02 - Rev.A BH1721FVC Technical Note ●Package Outlines A E Production code Lot No. WSOF5 (Unit: mm) ●Optical design for the device 0.8 mm 0.6 mm Min.0.4 mm Min.0.4 mm PD area (0.25 mm x 0.3 mm) Please design an optical window to have the focused light within this area. Min.0.4 mm Min.0.4 mm www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 13/15 2010.02 - Rev.A BH1721FVC Technical Note ●Notes for 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. 2) GND voltage Make setting of the potential of the GND terminal so that it will be maintained at the minimum in any operating state. Furthermore, check to be sure no terminals are at a potential lower than the GND voltage including an actual electric transient. 3) Short circuit between terminals and erroneous mounting In order to mount ICs on a set PCB, pay thorough attention to the direction and offset of the ICs. Erroneous mounting can break down the ICs. Furthermore, if a short circuit occurs due to foreign matters entering between terminals or between the terminal and the power supply or the GND terminal, the ICs can break down. 4) Operation in strong electromagnetic field Be noted that using ICs in the strong electromagnetic field can malfunction them. 5) Inspection with set PCB On the inspection with the set PCB, if a capacitor is connected to a low-impedance IC terminal, the IC can suffer stress. Therefore, be sure to discharge from the set PCB by each process. Furthermore, in order to mount or dismount the set PCB to/from the jig for the inspection process, be sure to turn OFF the power supply and then mount the set PCB to the jig. After the completion of the inspection, be sure to turn OFF the power supply and then dismount it from the jig. In addition, for protection against 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, parasitic elements are inevitably formed in relation to potential. The operation of the parasitic element can cause interference with circuit operation, thus resulting in a malfunction and then breakdown of the input terminal. Therefore, pay thorough attention not to handle the input terminals; such as to apply to the input terminals a voltage lower than the GND respectively, so that any parasitic element will operate. Furthermore, do not apply a voltage to the input terminals when no power supply voltage is applied to the IC. In addition, even if the power supply voltage is applied, apply to the input terminals a voltage lower than the power supply voltage or within the guaranteed value of electrical characteristics. 7) Thermal design Perform thermal design in which there are adequate margins by taking into account the power dissipation ( Pd ) in actual states of use. 8) Treatment of package Dusts or scratch on the photo detector may affect the optical characteristics. Please handle it with care. 9) Rush current When power is first supplied to the CMOS IC, it is possible that the internal logic may be unstable and rush current may flow instantaneously. Therefore, give special consideration to power coupling capacitance, power wiring, width of GND wiring, and routing of connections. 10) The exposed central pad on the back side of the package There is an exposed central pad on the back side of the package. Please mount by Footprint dimensions described in the Jisso Information for WSOF5. This pad is GND level, therefore there is a possibility that LSI malfunctions and heavy-current is generated. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 14/15 2010.02 - Rev.A BH1721FVC Technical Note ●Ordering part number B H 1 Part No. 7 2 1 F Part No. V C Package FVC: WSOF5 - T R Packaging and forming specification TR: Embossed tape and reel WSOF5 Quantity 3000pcs 4 4 (0.91) 5 0.2MAX Embossed carrier tape (0.3) (0.05) Tape 1.0±0.05 5 (0.41) 1.6±0.05 (0.8) Direction of feed TR 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 ) 3 2 1 1 2 3 1pin 0.13±0.05 S +0.03 0.02 −0.02 0.6MAX 1.2±0.05 (MAX 1.28 include BURR) <Tape and Reel information> 1.6±0.05 0.1 S 0.5 0.22±0.05 0.08 Direction of feed M (Unit : mm) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. Reel 15/15 ∗ Order quantity needs to be multiple of the minimum quantity. 2010.02 - Rev.A Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. 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