Ambient Light Sensor IC Series Digital 16bit Serial Output Type Ambient Light Sensor IC BH1715FVC No.09046EAT06 ●Descriptions 2 BH1715FVC is an digital Ambient Light Sensor IC for I C bus interface. BH1715FVC 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 - 65535 lx). ●Features 2 1) I C bus Interface (f / s Mode Support) 2) Spectral responsibility is approximately human eye response 3) Illuminance to Digital Converter 4) Wide range and High resolution. (1 – 65535 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) 2 10) It is possible to select 2 type of I C slave-address. 11) Adjustable measurement result for influence of optical window (It is possible to detect min. 0.33 lx, max. 100000 lx by using this function.) 12) Small measurement variation (+/- 15%) ●Applications Mobile phone, LCD TV, NOTE PC, Portable game machine, Digital camera, Digital video camera, Car navigation, PDA, LCD display ●Absolute Maximum Ratings Parameter Supply Voltage Operating Temperature Storage Temperature SDA Sink Current Power Dissipation Symbol Limits Units Vmax Topr Tstg Imax Pd 4.5 -40～85 -40～100 7 260※ V ℃ ℃ mA mW ※ 70mm × 70mm × 1.6mm glass epoxy board. Derating in done at 3.47mW/℃ for operating above Ta=25℃. ●Operating Conditions Parameter VCC Voltage I2C Reference Voltage www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. Symbol Min. Typ. Max. Units Vcc VDVI 2.4 1.65 3.0 － 3.6 VCC V V 1/15 2009.06 - Rev.A Technical Note BH1715FVC ●Electrical Characteristics (VCC = 3.0V, DVI = 3.0V, Ta = 25℃, unless otherwise noted) Parameter Symbol Min. Typ. Max. Units Supply Current Powerdown Current Peak Wave Length Icc1 Icc2 λp － － － 120 0.01 560 190 1.0 － µA µA nm Measurement Accuracy S/A 1.02 1.2 1.38 times Dark (0 lx) Sensor out H-Resolution Mode Resolution L-Resolution Mode Resolution H-Resolution Mode Measurement Time L-Resolution Mode Measurement Time S0 rHR rLR tHR tLR 0 － － － － 0 1 4 120 16 2 － － 180 24 count H-Resolution Mode ※3 lx lx ms ms Incandescent / Fluorescent Sensor out ratio rIF － 1 － times VAH VAL VDVL VIH1 VIH2 VIL1 VIL2 IIH IIL fSCL tBUF 0.7 * VCC － － 0.7 * DVI 1.26 － － － － － 1.3 － － － － － － － － － － － － 0.3 * VCC 0.4 － － 0.3 * DVI DVI-1.26 10 10 400 － V V V V V V V µA µA kHz 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 tSUSTD 0.6 － － µs tHDDAT tSUDAT tLOW tHIGH VOL 0 100 1.3 0.6 0 － － － － － 0.9 － － － 0.4 µs ns µs µs V ADDR Input ‘H’ Voltage ADDR Input ‘L’ Voltage DVI Input ‘L’ Voltage SCL, SDA Input ‘H’ Voltage 1 SCL, SDA Input ‘H’ Voltage 2 SCL, SDA Input ‘L’ Voltage 1 SCL, SDA Input ‘L’ Voltage 2 SCL, SDA, ADDR Input ‘H’ Current SCL, SDA, ADDR Input ‘L’ Current I2C SCL Clock Frequency I2C Bus Free Time 2 I C Data Hold Time I2C Data Setup Time I2C ‘L’ Period of the SCL Clock I2C ‘H’ Period of the SCL Clock I2C SDA Output ‘L’ Voltage Conditions Ev = 100 lx ※1 No input Light Sensor out / Actual lx 1, 2 EV = 1000 lx ※ ※ EV = 1000 lx DVI ≧ 1.8V 1.65V ≦ DVI ＜ 1.8V DVI ≧ 1.8V 1.65V ≦ DVI ＜ 1.8V 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 10 lx) is need. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 2/15 2009.06 - Rev.A Technical Note BH1715FVC ●Reference Data 64 1.2 100000 56 0.6 0.4 40 32 H-Res. H-Res. 24 16 L-Res. 0 500 600 700 800 900 1000 1 0 1100 8 16 24 48 56 1 64 1pin 0.8 Ratio 0.6 - 0.6 - 0.2 0 0 -90 -60 1pin - + 0.2 -30 0 30 60 6 蛍光灯白熱灯感度比 2 H-Res. + -60 -30 0 30 60 0 90 -40 -10 Angle [ deg ] Angle [ deg ] Fig.4 Directional Characteristics 1 1.2 Fig.5 Directional Characteristics 2 Kripton Light 0.4 Artifical Sun Light 0.2 80 110 Fig.6 Dark Response ICC @ Measurement Halogen Light 0.6 50 200 Incandescent Light 0.8 20 Ta [ ℃ ] Fluorescent Light 1 100000 4 + -90 90 10000 8 0.4 0.4 1000 10 0.8 + 受信指向角特性 100 Fig.3 Illuminance – Measurement Result 2 1 1 10 Illuminance [ lx ] 1.2 1.2 Ratio 40 Fig.2 Illuminance – Measurement Result 1 Fig.1 Spectral Response Ratio 32 Illuminance [ lx ] Wavelength [ nm ] VCC vs. ICC@測定 150 中 100 50 White LED 0 -40 -10 20 50 80 110 0 Ta [ ℃ ] 0.5 1 1.5 0 2 2 Ratio Fig.7 Measurement Result Temperature Dependency Fig.8 Light Source Dependency ( Fluorescent Light is set to '1' ) 10 2.5 4 1 VCC=3V DVI=1.8V 0.8 0.1 3.5 1.2 1 1 3 VCC [ V ] Fig.9 VCC – ICC ( During measurement ) 1.2 0.8 Ratio Ratio ICC @ POWER DOWN [ uA ] 100 10 8 0.2 0 400 L-Res. 1000 Measurement Result Ratio 0.8 10000 48 Measurement Result Measurement Result 1 0.6 0.6 0.4 0.4 0.2 0.2 0.01 -40 -20 0 20 40 60 80 Ta [ ℃ ] Fig.10 VCC – ICC@0 Lx ( POWER DOWN ) www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 0 0 2 2.5 3 VCC [ V ] 3.5 4 Fig.11 Measurement Result VCC Dependency 3/15 1.5 2 2.5 DVI [ V ] 3 3.5 Fig.12 Measurement Result DVI Dependency 2009.06 - Rev.A Technical Note BH1715FVC ●Block Diagram DVI VCC AMP Logic + I2C Interface ADC SCL SDA PD OSC GND ADDR ●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 2 Ambient Light Calculation and I C 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 "0100_0101". ●OSC Internal Oscillator (typ. 320kHz). It is CLK for internal logic. ●Measurement Procedure Power supply Initial state is Power Down mode after State is automatically changed to VCC and DVI supply. Power Down mode. Power Down Power On Measurement Command One Time Measurement Continuous Measurement State Transition by I2C write-command. Automatically State Transition * "Power On" Command is possible to omit. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 4/15 2009.06 - Rev.A Technical Note BH1715FVC ●Instruction Set Architecture Instruction Opecode Comments Power Down 0000_0000 No active state. Power On 0000_0001 Waiting for measurement command. Reset 0000_0111 Reset Data register value. Reset command is not acceptable in Power Down mode. Continuously H-Resolution Mode 0001_0000 Start measurement at 1lx resolution. Measurement Time is typically 120ms. Continuously L-Resolution Mode 0001_0011 Start measurement at 4lx resolution. Measurement Time is typically 16ms. One Time H-Resolution Mode 0010_0000 Start measurement at 1lx resolution. Measurement Time is typically 120ms. It is automatically set to Power Down mode after measurement. One Time L-Resolution Mode 0010_0011 Start measurement at 4lx resolution. Measurement Time is typically 16ms. It is automatically set to Power Down mode after measurement. Change Measurement time (High bit) 01000_MT[7,6,5] Change measurement time. Change Measurement time (Low bit) 011_MT[4,3,2,1,0] Change measurement time. ※ Please refer "adjust measurement result for influence of optical window." ※ Please refer "adjust measurement result for influence of optical window." ※ Don't input the other opecode. ●Measurement mode explanation Measurement Mode Measurement Time. Resolution H-Resolution Mode L-Resolution Mode Typ. 120ms. Typ. 16ms. 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) ●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 © 2009 ROHM Co., Ltd. All rights reserved. 5/15 2009.06 - Rev.A Technical Note BH1715FVC ●Timing chart for VCC and DVI power supply sequence DVI is I2C bus reference voltage terminal. And it is also asynchrono reset terminal. It is necessary to set to 'L' supplied. In DVI 'L' term, internal state is set to Power Down mode. after VCC is 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 1us after VCC supply) VCC DVI Reset Term ( more than 1µs ) Don't care state ADDR, SDA, SCL is not stable if DVI 'L' term ( 1µs ) is not given by systems. In this case, please connect the resisters ( approximately 100kOhm ) to ADDR without directly connecting to VCC or GND,because it is 3 state buffer for Internal testing. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 6/15 2009.06 - Rev.A Technical Note BH1715FVC ●Measurement sequence example from "Write instruction" to "Read measurement result" ex1) Continuously H-resolution mode (ADDR = 'L') from Slave to Master from Master to Slave ① Send "Continuously H-resolution mode " instruction ST 0100011 ② Wait to complete 1st 0 Ack 00010000 Ack SP H-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.(120ms.typ at H-resolution mode, 16ms.typ at L-resolution mode) ex2) One time L-resolution mode (ADDR = 'H') ① Send "One time L-resolution mode " instruction ST 1011100 0 Ack 00100011 Ack SP ② Wait to complete L-resolution mode measurement.(max. 24ms.) ③ Read measurement result ST 1011100 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 ] In one time measurement, Statement moves to power down mode after measurement completion. If updated result is need then please resend measurement instruction. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 7/15 2009.06 - Rev.A Technical Note BH1715FVC ●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. Moreover, the description concerning the terminal ADDR is omitted. Please 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. BH1715FVC 0.1µF VCC SCL ADDR DVI GND SDA Micro Controller 0.1µF ex 2) Reset IC is used. 1, For Reset IC of the Push-Pull type BH1715FVC VCC 0.1µF SCL ADDR DVI GND SDA 0.1µF RESET Reset IC( Push-Pull type ) 2, For Reset IC of the Open drain output BH1715FVC 0.1µF VCC SCL ADDR DVI GND SDA 1kOhm 0.1µF RESET Reset IC( Open drain type ) ex 3) A different power supply is used. BH1715FVC 0.1µF V1 VCC SCL ADDR DVI GND SDA 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 © 2009 ROHM Co., Ltd. All rights reserved. 8/15 2009.06 - Rev.A Technical Note BH1715FVC 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 : 1kOhm BH1715FVC 0.1µF VCC SCL ADDR DVI GND SDA 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 occurred if recommended constant (R1 = 1kOhm, 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 ① The rise time to 0→2.4V of VCC must use the power supply of 100µs or less. ② Please 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 2.8V DVI 2.4V 0.4V 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 © 2009 ROHM Co., Ltd. All rights reserved. 9/15 2009.06 - Rev.A Technical Note BH1715FVC ●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 tLOW tr tBUF SCL S tSU ; STA tHD ; STA tSU;STO Sr tHIGH t tHD ; DAT P S 2)Slave Address Slave Address is 2 types, it is determined by ADDR Terminal ADDR = ‘H’ (ADDR ≧ 0.7VCC) →“1011100“ ADDR = 'L' (ADDR ≦ 0.3VCC) →“0100011“ 3)Write Format BH1715FVC is not able to accept plural command without stop condition. Please insert SP every 1 Opecode. R/W ST Slave Address Opecode Ack Ack 0 SP 4)Read Format ST R/W 1 Slave Address 27 26 Low Byte [7:0] 25 24 23 22 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 21 20 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 ] High Byte [15:8] 215 214 213 212 211 210 29 28 Ack * I2C BUS is trademark of Phillips Semiconductors. Please refer formality specification. 10/15 2009.06 - Rev.A Technical Note BH1715FVC ●Adjust measurement result for influence of optical window. BH1715FVC is including in adjust measurement result function for influence of optical window. Adjust is done by changing measurement time. For example, if transmission rate by optical window is 1 / N, then adjust is done by measurement time is set to "initial value * N". Measurement time register (Mtreg) is 8bit register. Initial value is "0100_0101" (45xh). Please 2 change this register value via to I C Bus interface. ex) Case of transmission rate is 50%. Please change Mtreg value from "0100_0101" to "1000_1010". 1)Changing High bit of Mtreg R/W ST Slave Address Ack 0 01000_100 Ack SP 2)Changing Low bit of Mtreg ST Slave Address R/W 0 Ack 011_01010 Ack SP R/W 0 Ack 0001_0000 Ack SP 3)Input Measurement Command. ST Slave Address ※ 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.) Supported Mtreg value is seeing below. Supported value (hex) Min. 0010_1101 (transmission rate 153%) Typ. 0100_0101 (transmission rate 100%) Max 1111_1110 (transmission rate 27.2%) For example BH1715FVC is possible to detect min. 0.33 lx when Mtreg value is “1111_1110” at H-Resolution mode. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 11/15 2009.06 - Rev.A Technical Note BH1715FVC ●Terminal Description Pin No. Terminal Name 1 VCC Equivalent Circuit Power Supply Terminal VCC ※ Function I2C Slave-address Terminal ADDR = ‘H’ (ADDR ≧ 0.7VCC) “1011100“ ADDR = 'L' (ADDR ≦ 0.3VCC) “0100011“ ADDR Terminal is designed as 3 state buffer for internal test. So that please take care of VCC and DVI supply procedure.Please see P6. 2 ADDR 3 GND GND Terminal 4 SDA I2C bus Interface SDA Terminal 5 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. BH1715FVC is pulled down by 150kOhm while DVI = 'L'. 6 SCL 150kOhm 2 I C bus Interface SCL Terminal These values are design-value, not guaranteed. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 12/15 2009.06 - Rev.A Technical Note BH1715FVC ●Package Outlines A D Lot No. Production code WSOF6 ( Unit : mm ) ●About an optical design on the device 0.8 mm 1.3 mm Min.0.4 mm Min.0.4 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 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 13/15 2009.06 - Rev.A Technical Note BH1715FVC ●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. 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. But please do it non connection. (Don't solder, and don't do electrical connection) Please mount by Footprint dimensions described in the Jisso Information for WSOF6. This pad is GND level, therefore there is a possibility that LSI malfunctions and heavy-current is generated. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 14/15 2009.06 - Rev.A Technical Note BH1715FVC ●Ordering part number B H 1 Part No. 7 1 5 Part No. 1715 F V C Package FVC: WSOF6 - T R Packaging and forming specification TR: Embossed tape and reel (WSOF6) WSOF6 <Tape and Reel information> 5 4 4 5 6 (1.5) 6 (0.45) 2.6±0.1 (MAX2.8 include BURR) (1.2) (1.4) 1 2 3 3 2 0.75MAX Embossed carrier tape Quantity 3000pcs 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 ) 1pin 1 1PIN MARK 0.3 Tape (0.15) 3.0±0.1 1.6±0.1 (MAX1.8 include BURR) 0.145±0.05 S 0.08 S 0.5 0.22±0.05 0.08 Direction of feed M (Unit : mm) www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. Reel 15/15 ∗ Order quantity needs to be multiple of the minimum quantity. 2009.06 - 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. 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If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. R0039A