18 CHANNELS LED DRIVER EVALUATION BOARD GUIDE

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1 8 CHANNELS LED DRIVER EVALUATION BOARD GUIDE DESCRIPTION ISFL8 is comprised of 8 constant current channels each with independent PWM control, designed for driving LEDs. The output current of each channel can be set at up to 8mA (Max.) by an external resistor. The average LED current of each channel can be changed in 6 steps by changing the PWM duty cycle through an IC interface. The chip can be turned off by pulling the pin low or by using the software shutdown feature to reduce power consumption. The slave address is fixed. FEATURES.7V to.v supply IC interface, automatic address increment function Internal reset register Modulate LED brightness with 6 steps PWM Each channel can be controlled independently - C to +8 C temperature range QFN- (mm mm), SOP- packages QUICK START RECOMMENDED EQUIPMENT.V, A power supply ABSOLUTE MAXIMUM RATINGS.V power supply Caution: Do not exceed the conditions listed above, otherwise the board will be damaged. PROCEDURE The ISFL8 evaluation board is fully assembled and tested. Follow the steps listed below to verify board operation. Caution: Do not turn on the power supply until all connections are completed. ) If using external DC power supply connect the ground terminal of the power supply to the evaluation board's pin and the positive terminal to the pin. The evaluation board can also be powered via the Micro USB connector. ) Short J to close external control. ) Turn on the power supply/plug in the Micro USB and pay attention to the supply current. If the current exceeds A, please check for circuit fault. ) Enter the desired mode of display by toggling the MODE button (K). Figure : Photo of ISFL8 Evaluation Board ORDERING INFORMATION Part No. Temperature Range Package ISFL8-QFLS-EB - C to +8 C (Industrial) QFN-8, Lead-free Table : Ordering Information For pricing, delivery, and ordering information, please contacts ISSI s analog marketing team at analog@issi.com or (8) Integrated Silicon Solution, Inc. Rev. A, //8

2 8 CHANNELS LED DRIVER EVALUATION BOARD GUIDE EVALUATION BOARD OPERATION The evaluation board is controlled by LPC9. ISFL8 evaluation board has 8 modes: ) Mode: single color LEDs chase after other single color LEDs ) Mode: 9 single color LEDs chase after other 9 single color LEDs ) Mode: single colors LEDs go round and round, the speed is slow and then hurries up. ) Mode: groups single color LEDs on two sides circumrotated. ) Mode: 8 single color LEDs breathe. 6) Mode6: the color of RGB LEDs are changing and moving from RGB to RGB6 all the time. 7) Mode7: the RGB LEDs (RGB-RGB6) are breathing, and the color is changing all the time 8) Mode8: the RGB LEDs (RGB-RGB6) are changing color from two sides to middle. Note: ISFL8 solely controls the FxLED function on the evaluation board. SOFTWARE SUPPORT JP default setting is closed (jumper on). If it is open (when the EVB is powered on by V DC or micro-usb, no jumper JP), the on-board MCU will configure its own IC//AD pins to High Impedance status so an external source can driver the IC/ signals to control the ISFL8 LED driver, the on-board MCU will also configure the U to open the VLED (Single color LED+) and close the VRGB. The steps listed below are an example using the Arduino for external control. The Arduino hardware consists of an Atmel microcontroller with a bootloader allowing quick firmware updates. First download the latest Arduino Integrated Development Environment IDE (.6. or greater) from Also download the Wire.h library from and verify that pgmspace.h is in the directory program Files(x86)/Arduino/hardware/tools/avr/avr/include/avr /. Then download the latest ISFL8 test firmware (sketch) from the ISSI website ) Keep the JP shorted. ) Power on the Arduino UNO. ) Connect the pins from Arduino board to ISFL8 EVB: a) Arduino to ISFL8 EVB (TP). b) Arduino V pin to ISFL8 EVB (TP). The on-board MCU will start to run in default mode (Mode). ) Open the JP, the on-board configure the // to Hi-Z status, all LEDs are turned off. ) Connect the pins from Arduino board to ISFL8 EVB: a) Arduino (A) to ISFL8 EVB (TP). b) Arduino (A) to ISFL8 EVB (TP). c) If Arduino use.v MCU, connect.v to ISFL8 EVB, if Arduino use.v MCU, connect.v to EVB (TP). (Arduino UNO is.v, so =.V) 6) Use the test code in appendix I or download the test firmware (sketch) from the ISSI website, a.txt file and copy the code to Arduino IDE, compile and upload to Arduino. 7) Run the Arduino code and the single LED will run the Arduino code. If need to swap to RGB display, one way is de-soldering the U and short the U s pin and pin or pin 6 to enable the power of RGB. Please refer to the datasheet to get more information about ISFL8. Figure : Photo of Arduino UNO connected to Evaluation Board Integrated Silicon Solution, Inc. Rev. A, //8

3 8 CHANNELS LED DRIVER EVALUATION BOARD GUIDE Integrated Silicon Solution, Inc. Rev. A, //8 Vdd EN Vout BP U LDO VDD DS K VDD TP Header VBlue VRGB VUSB TP TP OUT OUT OUT OUT OUT OUT6 OUT7 OUT8 OUT9 OUT OUT OUT OUT OUT OUT OUT6 OUT7 OUT8 OUT OUT OUT OUT OUT OUT6 OUT7 OUT8 OUT9 OUT OUT OUT OUT OUT OUT OUT6 OUT7 OUT8 VRGB VBlue OUT OUT OUT OUT OUT OUT6 OUT7 OUT8 OUT9 OUT OUT OUT OUT OUT OUT OUT6 OUT7 OUT8 S G S G D D 6 D 7 D 8 U APM9 R K R6 K R.7K R.7K R.K R K R7 K D D D D D D6 D7 D8 D9 D D D D D D D6 D7 D8 C6 uf C nf C uf C uf C nf ISSI +V D- D+ ID CON USB-P G G D9 D D D D D P./CMP/KBI P.7 P.6 P./RST VSS P./XTAL 6 P.XTAL/CLKOUT 7 P./INT 8 P./INT/ 9 P./T/ P./RXD P./TXD P.7/T/KBI7 P.6/CMP/KBI6 VDD P./CMPREF/KBI 6 P./CINA/KBI 7 P./CINB/KBI 8 P./CINA/KBI 9 P./CINB/KBI U LPC9 JP OPEN=EXT CTRL V TP ICP VDD 6 R-EXT OUT 7 OUT 8 OUT 9 OUT OUT OUT6 OUT7 OUT8 OUT9 OUT 6 OUT 7 OUT 8 OUT 9 OUT OUT OUT6 OUT7 OUT8 U ISFL8 C7 uf C uf G G P. P. RST V P. P. RST Figure : ISFL8 Application Schematic

4 8 CHANNELS LED DRIVER EVALUATION BOARD GUIDE BILL OF MATERIALS Name Symbol Description Qty Supplier Part No. LED Driver U 8CH FxLED Driver ISSI ISFL8 LDO U.V LDO SGMICRO SGM9-.YNG MCU U Microcontroller NXP LPC9 PMOS U PMOS ANPEC APM9 Diode DS Diode, SMD DIODES DFLS Diode D~D8 Diode, LED Blue, SMD 8 Everlight 9-7/BHC-ZLMRY/T Diode D9~D Diode, LED RGB, SMD 6 Everlight 99-/RGBC/TR8 Resistor R RES,.k,/6W,±%,SMD Yageo RC6JR-7KKL Resistor R, R RES,.7k,/6W,±%,SMD Yageo RC6JR-7K7L Resistor R, R7 RES,k,/6W,±%,SMD Yageo RC6JR-7KL Resistor R, R6, RES,k,/6W,±%,SMD Yageo RC6JR-7KL Capacitor C, C7 CAP,µF,6V,±%,SMD Yageo CC6KKX7R9BB6 Capacitor C CAP,nF,6V,±%,SMD Yageo CC6KKX7R9BB Capacitor C, C CAP,µF,6V,±%,SMD Yageo CC6KKX7R9BB Capacitor C CAP, nf,6v,±%,smd Yageo CC6KKX7R9BB Button K Button SMD Bill of Materials, refer to Figure above. Integrated Silicon Solution, Inc. Rev. A, //8

5 8 CHANNELS LED DRIVER EVALUATION BOARD GUIDE Figure : Board Component Placement Guide - Top Layer Figure : Board PCB Layout - Top Layer Integrated Silicon Solution, Inc. Rev. A, //8

6 8 CHANNELS LED DRIVER EVALUATION BOARD GUIDE Figure 6: Board Component Placement Guide - Bottom Layer Figure 7: Board PCB Layout - Bottom Layer Copyright 8 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products. Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that: a.) the risk of injury or damage has been minimized; b.) the user assume all such risks; and c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances Integrated Silicon Solution, Inc. 6 Rev. A, //8

7 8 CHANNELS LED DRIVER EVALUATION BOARD GUIDE REVISION HISTORY Revision Detail Information Data A Initial Release 8.. Integrated Silicon Solution, Inc. 7 Rev. A, //8

8 8 CHANNELS LED DRIVER EVALUATION BOARD GUIDE APPENDIX Ⅰ: ISFL8 Arduino Test Code VA #include<wire.h> #include<avr/pgmspace.h> #define Addr xa8 void setup() // put your setup code here, to run once: pinmode(, OUTPUT);//ARDUINO BOARD LED control Wire.begin(); Wire.setClock();//IC khz void loop() // put your main code here, to run repeatedly: mainloop(); void IS_IIC_WriteByte(uint8_t Dev_Add,uint8_t Reg_Add,uint8_t Reg_Dat)//writing an LED register Wire.beginTransmission(Dev_Add/); Wire.write(Reg_Add); // sends regaddress Wire.write(Reg_Dat); // sends regaddress Wire.endTransmission(); // stop transmitting void mainloop(void)// int i,j,k,l; while() digitalwrite(, HIGH); // turn the ARDUINO BOARD LED on (HIGH is the voltage level) IS_IIC_WriteByte(Addr,x7,x);//reset IC IS_IIC_WriteByte(Addr,x,x);//Enable SSD IS_IIC_WriteByte(Addr,x,xf);//enable all LED channel IS_IIC_WriteByte(Addr,x,xf);//enable all LED channel IS_IIC_WriteByte(Addr,x,xf);//enable all LED channel for(j=;j<=xff;j++) for(i=;i<8;i=i+) IS_IIC_WriteByte(Addr,(x+i),j);//write all channel PWM with x IS_IIC_WriteByte(Addr,x6,x);//update PWM and ON/OFF delay(); Integrated Silicon Solution, Inc. 8 Rev. A, //8

9 8 CHANNELS LED DRIVER EVALUATION BOARD GUIDE digitalwrite(, LOW); // turn the ARDUINO BOARD LED off by making the voltage LOW IS_IIC_WriteByte(Addr,x,xf);//enable all LED channel IS_IIC_WriteByte(Addr,x,xf);//enable all LED channel IS_IIC_WriteByte(Addr,x,xf);//enable all LED channel for(l=;l>=;l--) for(k=;k<8;k=k+) IS_IIC_WriteByte(Addr,(x+k),l);//write all channel PWM with x IS_IIC_WriteByte(Addr,x6,x);//update PWM and ON/OFF delay(); // IS_IIC_WriteByte(Addr,x,x);//release SSD to normal operation delay(); // wait for half a second IS_IIC_WriteByte(Addr,x7,x);//reset IC Integrated Silicon Solution, Inc. 9 Rev. A, //8