IS31FL3730 Audio Modulated Matrix LED Driver Evaluation Board Guide. IS31FL3730-QFLS2-EB QFN-20, Lead-free. Table1: Ordering Information

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1 ISFL7 Audio Modulated Matrix LED Driver Evaluation Board Guide Description ISFL7 is a LED matrix driver which features an audio modulation display mode and a general LED dot matrix display mode. The default configuration of ISFL7 is to drive a single 8 8 LED matrix. However, ISFL7 may be configured to drive either one or two 8 8, 7 9, 6, or dot matrix display(s). The intensity of any matrix picture can be modulated by an audio signal. In the general purpose mode, the ON or OFF condition of each individual LED in the display matrix is programmed via an IC interface. Features.7V to.v supply IC interface, automatic address increment function One-time programming, internal scan Audio modulated display intensity with digitally programmable input gain Internal registers to digitally adjust display intensity Modulate LED brightness with 8 different items in PWM One address pin with logic levels to allow four IC slave addresses QFN- (mm mm) package Quick Start Recommended Equipment.V, A power supply Audio source( i.e. MP player, Notebook PC, etc) 8Ω speaker Absolute Maximum Ratings.V power supply Caution: Do not exceed the conditions listed above, otherwise the board will be damaged. Procedure The ISFL7 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. ) Connect an 8Ω speaker to the SPK connector. ) Connect the audio source to the AUDIO IN connector. ) Connect the DC power to the connector (DC IN). ) Turn on the power supply and pay attention to the supply current. If the current exceeds A, please check for circuit fault. ) Turn on the audio signal. 6) Modulation of the audio signal utilized to obtain better sound output performance Figure : Photo of ISFL7 Evaluation Board Evaluation Board Ordering Information Part No. IC Package ISFL7-QFLS-EB QFN-, Lead-free Table: Ordering Information For pricing, delivery, and ordering information, please contacts ISSI s analog marketing team at analog_mkt@issi.com or (8) Integrated Silicon Solution, Inc. R., 7//

2 ISFL7 Audio Modulated Matrix LED Driver Evaluation Board Guide Evaluation Board Operation The ISFL7 evaluation board has six display modes. Press MODE button to switch configurations. ) (Default Mode) A little man is dancing and change postures according to music rhythm. ) Display Chinese characters 赵, 钱, 孙, 李, etc one by one, then move to left to display more characters. ) Display Hart shape, Butterfly, Lock, Little Man, etc graphics with breathing dimming effect. ) Flying butterfly. ) Hart shape animation. 6) Combined shapes animation. Software Control JP default setting is close circuit. If it is set to open, the on-board MCU will stop working. The IC pins are set to High Impedance. External IC signals can be connected to TP to control the ISFL7 LED driver. Please refer to the datasheet to get more information about ISFL7. *Note: ISFL7 solely controls the FxLED function on the evaluation board. R6 9K CON DC IN TP TP VCC C uf C uf U SD LDO VOUT BP C6 nf V C7 uf CON AUDIO IN C8.uF Audio In R K C9 uf VCC 6 7 U IN- SD ISAP99 VO VO IN+ BYPASS 8 C uf CON SPK JP OPEN=EXT CTRL V 9 8 U P./CMP/KBI P./CINB/KBI P./CINA/KBI P./CINB/KBI P./CINA/KBI P./T/SCL P./CMPREF/KBI P.6/CMP/KBI6 P.7/T/KBI7 P./TXD P./RXD P./RST V 7 P. 6 P. SDB SDA SCL RST TP V P. P. RST ICP R6 D D D9 D D D K MODE R K 9 P./XTAL P./INT/SDA P./INT P.XTAL/CLKOUT P.6 P.7 VSS TP SDA SCL SDB R D8 D9 LPC9 D7 D8 V R.7K SDA SCL SDB C uf C.uF Audio In C.uF VCC U R.7K R K 6 SDA SCL SDB IN C_FILT AD ISFL7 R6/C R R R R R C C C C C C6 C7 C8 R8/C9 R7/C R6 R R 9 R 8 R 7 R C C C C 9 C 8 C6 7 C7 6 C8 C9 C X ARRAY R R R R D6 D D D D D D C C C C C C6 C7 C8 C9 C D7 D6 D D D D D Figure :ISFL7 Application Schematic Integrated Silicon Solution, Inc. R., 7//

3 ISFL7 Audio Modulated Matrix LED Driver Evaluation Board Guide Bill of Materials Name Symbol Description Qty Supplier Part No. LED Driver U Array FxLED Driver ISSI ISFL7 LDO U Low-dropout Regulator PAM PAM MCU U Microcontroller NXP LPC9 Audio Amplifier U Class-AB Audio Amplifier ISSI ISAP99 Diodes D~D Diode, LED Blue, SMD Everlight Resistors R,R RES,.7k,/6W,±%,SMD Resistors R,R RES,k,/6W,±%,SMD Resistor R RES,k,/6W,±%,SMD Resistor R6 RES,9k,/6W,±%,SMD Capacitor C CAP,µF,6V,±%,SMD Capacitors C,C,C7,C9, C CAP, µf,6v,±%,smd Capacitor C CAP,.µF,6V,±%,SMD Capacitors C,C8 CAP,.µF,6V,±%,SMD Capacitor C6 CAP,nF,6V,±%,SMD Button K Button SMD Table : Bill of Materials, refer to Figure above. 9-7/BHC-ZL MRY/T Integrated Silicon Solution, Inc. R., 7//

4 ISFL7 Audio Modulated Matrix LED Driver Evaluation Board Guide Figure : Board Component Placement Guide -Top Layer Figure : Board PCB Layout- Top Layer Integrated Silicon Solution, Inc. R., 7//

5 ISFL7 Audio Modulated Matrix LED Driver Evaluation Board Guide Figure : Board Component Placement Guide -Bottom Layer Figure 6: Board PCB Layout-Bottom Layer Integrated Silicon Solution, Inc. R., 7//

6 ISFL7 Audio Modulated Matrix LED Driver Evaluation Board Guide Copyright 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 R., 7//