ISSI IS31FL3216A User manual

16 CHANNELS LED DRIVER EVALUATION BOARD GUIDE
Integrated Silicon Solution, Inc. – www.issi.com1
Rev. A, 09/18/2017
DESCRIPTION
The IS31FL3216A is a fun light LED controller with an
audio modulation mode. It can store data of 8 frames
with internal RAM to play small animations
automatically.
IS31FL3216A can sample the input signal to modulate
the intensity of LEDs, or control 8 frames playing by
internal ADC block.
The LED current of each channel can be set in 256
steps by adjusting the PWM duty cycle through an I2C
interface. 8 channels can be used as GPIO ports.
FEATURES
2.7V to 5.5V supply
I2C interface, automatic address increment
function
Internal RAM
Modulate LED brightness with 256 steps PWM
PWM frequency up to 26kHz
Each channel can be controlled independently
Auto Frame Play Mode with 8 frames
8 frames memory for animations
Audio Frame Mode with 8 frames
8 of 16 outputs not used as LED drivers can be
used as GPIO ports
8 levels of maximum intensity control
QFN-28 (4mm × 4mm) package
QUICK START
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Figure 1: Photo of IS31FL3216A Evaluation Board
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RECOMMENDED EQUIPMENT
5.0V, 2A power supply
Audio source( i.e. MP3 player, Notebook PC, etc)
8speaker
ABSOLUTE MAXIMUM RATINGS
5.5V power supply
8speaker
Caution: Do not exceed the conditions listed above, otherwise
the board will be damaged.
PROCEDURE
The IS31FL3216A 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.
1) If using external DC power supply connect the
ground terminal of the power supply to the
evaluation board's GND pin and the positive
terminal to the VCC pin. The evaluation board can
also be powered via the Micro USB connector.
2) Connect an 8speaker to the “SPK” connector.
3) Connect the audio source to the “AUDIO IN”
connector.
4) Short J1 to close external control.
5) Turn on the power supply/Plug in the Micro USB
and pay attention to the supply current. If the
current exceeds 1A, please check for circuit fault.
6) Turn on the audio signal.
7) Enter the desired mode of display by toggling the
MODE button (K1).
ORDERING INFORMATION
Part No. Temperature Range Package
IS31FL3216A-QFLS3-EB -40°C to +105°C (Industrial) QFN-28, Lead-free
Table 1: Ordering Information
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For pricing, delivery, and ordering information, please contacts ISSI’s analog marketing team at
[email protected] or [phone].

16 CHANNELS LED DRIVER EVALUATION BOARD GUIDE
Integrated Silicon Solution, Inc. – www.issi.com2
Rev. A, 09/18/2017
EVALUATION BOARD OPERATION
The evaluation board is controlled by LPC922.
IS31FL3216A evaluation board has 9 modes:
1) Audio Mode: Blue LEDs light bar in board flashes
to the sides with the strength of the music. The
stronger the music, the closer the LED bar is to
sides.
2) Audio Mode: Blue LEDs light bar in board flashes
from left to right with the strength of the music.
The stronger the music, the brighter the LED.
3) Audio Mode: Blue LEDs light bar in board flashes
from right to left with the strength of the music.
The stronger the music, the brighter the LED.
4) Audio Mode: RGBs light bar in board with music
and weak flicker and switch colors. (The color
changes to B-G-R).
5) Audio Mode (AGC OFF): RGBs light bar in board
flashes from left to right with the strength of the
music. Music the stronger the color bar the longer.
Switch colors automatically every six to seven
seconds.
6) Audio Mode (AGC ON, AGS 6dB): RGBs light bar
in board flashes from left to right with the strength
of the music. Music the stronger the color bar the
longer. Switch colors automatically every six to
seven seconds.
7) Auto frame play Mode: Blue LEDs light bar in
board move form right to left with off-tail effect.
8) Auto frame play Mode: The blue LED light below
the demo board moves from center to side.
9) Button Mode: OUT9~OUT16 use as input port,
OUT~OUT drives 8 LEDs as output. The default 8
LEDs are all bright. Press the corresponding
button on the left (OUT9~OUT16 corresponding
pin grounding). Then the corresponding LED
lights will go out.
Note: IS31FL3216A solely controls the FxLED function on the
evaluation board.
SOFTWARE SUPPORT
JP1 default setting is closed (jumper on). If it is open
(when the EVB is powered on by 5V DC or
micro-USB, no jumper JP1), the on-board MCU will
configure its own I2C/SDB/AD pins to High
Impedance status so an external source can driver
the I2C/SDB signals to control the IS31FL3216A LED
driver, the on-board MCU will also configure the U5
and U6 to open the VLED (Single color LED+) and
close the VRGB.
The AD pin is pulled low setting the device address of
IS31FL3216A to 0xE8 (0x74 for 7bit address format).

Figure 2: Photo of Arduino UNO connected to Evaluation
Board
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 (1.6.12 or
greater) from www.arduino.cc/en/Main/Software. Also
download the Wire.h library from
www.arduino.cc/en/reference/wire and verify that
pgmspace.h is in the directory …program
Files(x86)/Arduino/hardware/tools/avr/avr/include/avr
/. Then download the latest IS31FL3216A test
firmware (sketch) from the ISSI website
http://www.issi.com/US/product-analog-fxled-driversh
tml.
1) Open JP1.
2) Connect the 5 pins from Arduino board to
IS31FL3216A EVB:
a) Arduino 5V pin to IS31FL3216A EVB VCC
(TP3).
b) Arduino GND to IS31FL3216A EVB GND
(TP3).
c) Arduino SDA (A4) to IS31FL3216A EVB
SDA.
d) Arduino SCL (A5) to IS31FL3216A EVB
SCL.
e) If Arduino use 3.3V MCU VCC, connect
3.3V to IS31FL3216A EVB SDB, if Arduino
use 5.0V MCU VCC, connect 5.0V to EVB
SDB.
(Arduino UNO is 5.0V, so SDB=5.0V)

16 CHANNELS LED DRIVER EVALUATION BOARD GUIDE
Integrated Silicon Solution, Inc. – www.issi.com3
Rev. A, 09/18/2017
3) 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.
4) Run the Arduino code and the single LED will
always breathing.
Please refer to the datasheet to get more information about
IS31FL3216A.
VCC
C10
1uF
C91uF
C11
0.22uF
R27
20K
R28
39K
J3
AUDIO OUT
P2.0/ICB/DAC0/AD03 1
P2.1/OCD/AD02 2
P0.0/CMP2/KBI0/AD01
3
P1.7/OCC/AD00
4P1.6/OCB
5P1.5/RST
6
VSS 7
P3.1/XTAL1 8
P3.0XTAL2/CLKOUT 9
P1.4/INT1
10 P1.3/INT0/SDA
11 P1.2/T0/SCL
12
P2.2/MOSI 13
P2.3/MISO 14
P2.4/SS 15
P2.5/SPICLK 16
P1.1/RXD
17 P1.0/TXD
18
P0.7/T1/KBI7
19 P0.6/CMP1/KBI6
20
VDD 21
P0.5/CMPREF/KBI5
22 P0.4/CIN1A/KBI4/DAC1/AD13
23 P0.3/CIN1B/KBI3/AD12
24 P0.2/CIN2A/KBI2/AD11
25 P0.1/CIN2B/KBI1/AD10
26
P2.6/OCA 27
P2.7/ICA 28
U3
PDA
PCL
RST 0.1uF C5
V2.8V
INTB
SDA
SD
MODE
G R B
10nF
C3
VDD
1
GND
2
SD
3
BP 4
VOUT 5
U2
1uF
C4
V2.8V
0.1uF
C2
VCC
0.1uF
C7 R7
100K
0.1uF
C8
1uF
C6
R6
10K R4 4.7K R3 4.7K
R5100K
VCC
SCL
INTB
SDA
SDB
SCL
KEY
R8 10K
VCC
100uF
C1
U5-1
4953
J1
AUDIO IN
out1
out2
out3
out4
out5
out6
out7
out8
out9
out10
out11
out12
out13
out14
out15
out16
G R B G R B G R B G R B
out1out2out3 out4out5out6 out7 out8out9 out10out11out12 out13out14out15
V2.8V
out1 out2 out3 out4 out5 out6 out7 out8 out9 out10 out11 out12 out13 out14 out15 out16
out1 out2 out3 out4 out5 out6 out7 out8 out9 out10 out11 out12 out13 out14 out15 out16
out1
out2
out3
out4
out5
out6
out7
out8
R18
100K
R26
1K out14
R17
100K
R25
1K out13
R16
100K
R24
1K out12
R15
100K
R23
1K out11
R14
100K
R22
1K out10
R19
100K
R27
1K out15
R20
100K
R28
1K out16
R13
100K
R21
1K out9
P1.1
P1.0
P0.7
P0.6
P1.1
R12 100K
VCC
VCC
U5-2
4953
P1.0
R11 100K
VCC
VCC
U6-1
4953
P0.6
R9 100K
VCC
VCC
U6-2
4953
P0.7
R10 100K
VCC
Audio in
Audio in
OUT1 3
OUT2 4
OUT3 5
OUT4 6
OUT9 13
OUT10 14
OUT11 15
OUT12 16
GND
7,16
OUT13 17
OUT14 18
OUT15 19
OUT16 20
OUT5 8
OUT6 9
OUT7 10
OUT8 11
CLK
1
SCL
23
SDA
24
VCC
26
INTB
21
SDB
22
AD
25
IN
2
C_FILT
27
R_EXT
28
U1
IS31FL3216A
IN-
4
VDD
6
SD
1
GND
7BYP ASS 2
IN+ 3
VO2 8
VO1 5
U4
IS31AP4991
VCC 1
USB_DM 2
USB_DP 3
NC 4
GND 5
Con1

Figure 3: IS31FL3216A Application Schematic

16 CHANNELS LED DRIVER EVALUATION BOARD GUIDE
Integrated Silicon Solution, Inc. – www.issi.com4
Rev. A, 09/18/2017
BILL OF MATERIALS
Name Symbol Description Qty Supplier Part No.
LED Driver U1 16CH FxLED Driver 1 ISSI IS31FL3216A
LDO U2 Low-dropout Regulator 1
PAM PAM3101
MCU U3 Microcontroller 1 NXP LPC922
Audio
Amplifier U4 Class-AB Audio Amplifier 1 ISSI IS31AP4991
PMOS U5,U6 Dual PMOS 2 ANPEC APM4953
Diode D1~D24 Diode, LED Blue, SMD 24 Everlight 19-217/BHC-ZL1M2RY/3T
Diode D25~D29 Diode, LED RGB, SMD 5 Everlight 99-235/RGBC/TR8
Resistor R1 RES,3.3k,1/16W,±5%,SMD 1 Yageo RC0603JR-073K3KL
Resistor R2,R3 RES,4.7k,1/16W,±5%,SMD 2 Yageo RC0603JR-074K7L
Resistor R4~R11 RES,100k,1/16W,±5%,SMD 8 Yageo RC0603JR-07100KL
Resistor
R13,R15,
R17,R18,
R21,R23,R25
RES,100k,1/16W,±5%,SMD 7 Yageo RC0603JR-07100KL
Resistor
R12,R14,
R16,R18,R20
R22,R24,R26
RES,4.7k,1/16W,±5%,SMD 8 Yageo RC0603JR-074K7L
Resistor R27 RES,20k,1/16W,±5%,SMD 1 Yageo RC0603JR-0720KL
Resistor R28 RES,39k,1/16W,±5%,SMD 1 Yageo RC0603JR-07100KL
Capacitor C1 CAP,100µF,16V,±20%,SMD 1 Yageo CC0603KKX7R9BB107
Capacitor C2,C5,C7,C8 CAP, 0.1µF,16V,±20%,SMD 4 Yageo CC0603KKX7R9BB104
Capacitor C4,C6,
C9,C10, CAP,1µF,16V,±20%,SMD 4 Yageo CC0603KKX7R9BB105
Capacitor C3 CAP,10nF,16V,±20%,SMD 1 Yageo CC0603KKX7R9BB103
Capacitor C11 CAP, 0.22µF,16V,±20%,SMD 1 Yageo CC0603KKX7R9BB224
Button K1~K9 Button SMD 9
Connector DC IN Micro USB connector 1
Bill of Materials, refer to Figure 3 above.

16 CHANNELS LED DRIVER EVALUATION BOARD GUIDE
Integrated Silicon Solution, Inc. – www.issi.com5
Rev. A, 09/18/2017
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
Figure 4: Board Component Placement Guide - Top Layer
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Figure 5: Board PCB Layout - Top Layer

16 CHANNELS LED DRIVER EVALUATION BOARD GUIDE
Integrated Silicon Solution, Inc. – www.issi.com6
Rev. A, 09/18/2017

 
Figure 6: Board Component Placement Guide - Bottom Layer
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Figure 7: Board PCB Layout - Bottom Layer
Copyright©2017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
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16 CHANNELS LED DRIVER EVALUATION BOARD GUIDE
Integrated Silicon Solution, Inc. – www.issi.com7
Rev. A, 09/18/2017
REVISION HISTORY
Revision Detail Information Data
A Initial Release 2017.09.18

16 CHANNELS LED DRIVER EVALUATION BOARD GUIDE
Integrated Silicon Solution, Inc. – www.issi.com8
Rev. A, 09/18/2017
APPENDIX Ⅰ: IS31FL3216A Arduino Test Code V01A
#include<Wire.h>
#include<avr/pgmspace.h>
#define Addr_GND 0xE8
//7 bit format is 0x74(AD=L) or 0x77(AD=H)
const PROGMEM byte PWM_Gama64[128]=
{
0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,
0x08,0x09,0x0b,0x0d,0x0f,0x11,0x13,0x16,
0x1a,0x1c,0x1d,0x1f,0x22,0x25,0x28,0x2e,
0x34,0x38,0x3c,0x40,0x44,0x48,0x4b,0x4f,
0x55,0x5a,0x5f,0x64,0x69,0x6d,0x72,0x77,
0x7d,0x80,0x88,0x8d,0x94,0x9a,0xa0,0xa7,
0xac,0xb0,0xb9,0xbf,0xc6,0xcb,0xcf,0xd6,
0xe1,0xe9,0xed,0xf1,0xf6,0xfa,0xfe,0xff,
0xff,0xfe,0xfa,0xf6,0xf1,0xed,0xe9,0xe1,
0xd6,0xcf,0xcb,0xc6,0xbf,0xb9,0xb0,0xac,
0xa7,0xa0,0x9a,0x94,0x8d,0x88,0x80,0x7d,
0x77,0x72,0x6d,0x69,0x64,0x5f,0x5a,0x55,
0x4f,0x4b,0x48,0x44,0x40,0x3c,0x38,0x34,
0x2e,0x28,0x25,0x22,0x1f,0x1d,0x1c,0x1a,
0x16,0x13,0x11,0x0f,0x0d,0x0b,0x09,0x08,
0x07,0x06,0x05,0x04,0x03,0x02,0x01,0x00
};
void setup() {
// put your setup code here, to run once:
Wire.begin();
Wire.setClock(400000);//I2C 400kHz
pinMode(4,OUTPUT);//SDB
digitalWrite(4,HIGH);//SDB_HIGH
Init_3216A();
}
void loop() {
// put your main code here, to run repeatedly:
IS31FL3216A_mode1();//breath mode
}
void IS_IIC_WriteByte(uint8_t Dev_Add,uint8_t Reg_Add,uint8_t Reg_Dat)
{
Wire.beginTransmission(Dev_Add/2); // transmit to device IS31FL373x
Wire.write(Reg_Add); // sends regaddress
Wire.write(Reg_Dat); // sends regaddress

16 CHANNELS LED DRIVER EVALUATION BOARD GUIDE
Integrated Silicon Solution, Inc. – www.issi.com9
Rev. A, 09/18/2017
Wire.endTransmission(); // stop transmitting
}
void Init_3216A(void)
{
uint8_t i = 0;
IS_IIC_WriteByte(Addr_GND,0x01,0xff);//turn on out9~16
IS_IIC_WriteByte(Addr_GND,0x02,0xff);//turn on out1~8
for(i=0x10;i<0x20;i++)
{
IS_IIC_WriteByte(Addr_GND,i,0x00);//write all PWM set 0x00
}
IS_IIC_WriteByte(Addr_GND,0xB0,0x00);//update
IS_IIC_WriteByte(Addr_GND,0x00,0x00);//normal operation
}
void IS31FL3216A_mode1(void)//All LED Breath
{
uint8_t i = 0;
int8_t j = 0;
for (j=0;j<127;j++)//all LED breath
{
for(i=0x10;i<0x20;i++)
{
IS_IIC_WriteByte(Addr_GND,i,pgm_read_byte_near(&PWM_Gama64[j]));//set all PWM
}
IS_IIC_WriteByte(Addr_GND,0xB0,0x00);//update
delay(20);//20ms
}
}