12×16 MATRIX LED DRIVER
DESCRIPTION
The IS31FL3733 is a general purpose 12×16 LEDs
matrix driver with 1/12 cycle rate. The device can be
programmed via an I2C compatible interface. Each
LED can be dimmed individually with 8-bit PWM data
which allowing 256 steps of linear dimming.
IS31FL3733 features 3 Auto Breathing Modes which
are noted as ABM-1, ABM-2 and ABM-3. For each
Auto Breathing Mode, there are 4 timing characters
which include current rising / holding / falling / off time
and 3 loop characters which include Loop-Beginning /
Loop-Ending / Loop-Times. Every LED can be
configured to be any Auto Breathing Mode or PWM
mode individually.
FEATURES
Supply voltage range from 2.7V to 5.5V
Programmable 12×16 (64 RGBs) matrix size with
de-ghost function
3 Auto Breath Modes and PWM Mode
Auto breath offers 128 steps gamma current,
interrupt and state look up registers
256 steps global current setting
Individual PWM control 256 steps
Individual open and short error detect function
QFN-48 (6mm×6mm) and eTQFP-48 packages
RECOMMENDED EQUIPMENT
5.0V, 2A power supply
ABSOLUTE MAXIMUM RATINGS
Caution: Do not exceed the conditions listed above, otherwise
the board will be damaged.
≤ 5.5V power supply
PROCEDURE
The IS31FL3733 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)
2)
3)
4)
Short J3 to connect 3VO and VIO.
Short J4 to connect PVCC and U1VCC.
Connect the 5VDC power to the connector
(J1&J2).
Turn on the power supply/Plug in the Micro USB
Pay attention to the supply current. If the current
exceeds 1A, please check for circuit fault.
QUICK START
Figure 1: Photo of IS31FL3733 Evaluation Board
ORDERING INFORMATION
Part No.
IS31FL3733-QFLS4-EB
Temperature Range
-40°C to +125°C (Industrial)
QFN-48, Lead-free
Package
Table 1: Ordering Information
For pricing, delivery, and ordering information, please contacts ISSI’s analog marketing team at
analog@issi.com
or (408) 969-6600.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 01/20/2017
1
12×16 MATRIX LED DRIVER
EVALUATION BOARD OPERATION
The IS31FL3733 evaluation board has three
animation display modes. Press K1 to switch
configurations.
1) Firework animation
2) Heart animation
3) Angle shift animation
4) All led turn on
The board comes with J4 default setting closed
(short). If it is set to open, the user can connect an
external VIO voltage supply, the external VIO voltage
is recommended to equal to ex-IIC’s high logic.
Follow the steps listed below for external control.
1)
2)
3)
4)
5)
6)
Open J4 to disconnect the power of U1, disable
the 3V0 (3.0V).
Open J3 to disconnect the VIO to 3V0, and
connect an external MCU VCC to VIO.
Pull-up the SDB to VIO.
Connect the 5VDC power to the connector
(J1&J2).
Turn on the power supply/Plug in the Micro USB
Pay attention to the supply current. If the current
exceeds 1A, please check for circuit fault.
Start external IIC control.
Note: IS31FL3733 solely controls the FxLED function on the
evaluation board.
SOFTWARE CONTROL
J4 default setting is closed (short). If it is set to open,
the U1 (LDO) will stop working and all the 3V, including
the supply of MCU will be cut off, all the MCU's IO will
be high impedance (open-drain) and external control is
allowed.
The IS31FL3733 can set its I2C bus interface logic
threshold based on the voltage on the VIO pin. An
external VIO voltage in the range of 1.8V≤V
IO
≤V
CC
can be applied after removing (open) the J4 jumper.
Caution: If J4 is closed (shorted), user can’t connect the user’s
MCU VCC to VIO directly, otherwise the user’s MCU (maybe 1.8V)
will connect to evaluation bard’s VIO (3.0V) and maybe
damaged.
Please refer to the datasheet to get more information about
IS31FL3733.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 01/20/2017
2
12×16 MATRIX LED DRIVER
IS31FL3733
PVCC
GND
GND
GND
C8
C9
20
29
37
38
U3
PVCC
PVCC
AVCC
DVCC
0.1uF
0.1uF
C10
0.1uF
SDA
SCL
INTB
SDB
VIO
NC
NC
CS16
CS15
CS14
CS13
CS12
CS11
CS10
CS9
CS8
CS7
CS6
CS5
CS4
CS3
CS2
CS1
SW12
SW11
SW10
SW9
SW8
SW7
SW6
SW5
SW4
SW3
SW2
SW1
39
1
36
33
32
31
30
28
27
26
25
24
23
22
21
19
18
17
16
15
14
13
11
10
9
8
7
6
4
3
2
VIO
0.1uF
CS16
CS15
CS14
CS13
CS12
CS11
CS10
CS9
CS8
CS7
CS6
CS5
CS4
CS3
CS2
CS1
SW12
SW11
SW10
SW9
SW8
SW7
SW6
SW5
SW4
SW3
SW2
SW1
GND
1
2
3
4
OSC_IN
5
OSC_OUT
6
7
GND
8
3V
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
3V
24
C5
1uF
GND
C11
VIO
R10 R8
R6
R12
100K 100K 4.7K 4.7K
MCU
U2
VBAT
VDD_3
PC13-ANTI_TAMP
VSS_3
PC14-OSC32_IN
PB9/TIM4_CH4
PC15-OSC32_OUT
PB8/TIM4_CH3
OSC_IN
BOOT0
OSC_OUT
PB7/I2C1_SDA/TIM4_CH2
NRST
PB6/I2C1_SCL/TIM4_CH1
VSSA
PB5
VDDA
PB4/JNTRST
PA0-WKUP/ADC_IN0/TIM2_CH1_ETR
PB3/JTDO
PA1/ADC_IN1/TIM2_CH2
PA15/JTDI
PA2/USART2_TX/ADC_IN2/TIM2_CH3
PA14/JTCK/SWCLK
PA3/USART2_RX/ADC_IN3/TIM2_CH4
VDD_2
PA4/SPI1_NSS/ADC_IN4
VSS_2
PA5/SPI1_SCK/ADC_IN5
PA13/JTMS/SWDIO
PA6/SPI1_MISO/ADC_IN6/TIM3_CH1
PA12/CANTX/USBDP/TIM1_ETR
PA7/SPI1_MOSI/ADC_IN7/TIM3_CH2
PA11/CANRX/USBDM/TIM1_CH4
PB0/ADC_IN8/TIM3_CH3
PA10/USART1_RX/TIM1_CH3
PB1/ADC_IN9/TIM3_CH4
PA9/USART1_TX/TIM1_CH2
PB2/BOOT1
PA8/TIM1_CH1/MCO
PB10/I2C2_SCL/USART3_TX
PB15/SPI2_MOSI/TIM1_CH3N
PB11/I2C2_SDA/USART3_RX
PB14/SPI2_MISO/TIM1_CH2N
VSS_1
PB13/SPI2_SCK/TIM1_CH1N
VDD_1
PB12/SPI2_NSS/TIM1_BKIN
STM32F103C8T6
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
3V
GND
SDA
SCL
3V
R13
91K
R14
10K
K1
GND
R1
10K
3V
R9
NC
GND
41
42
45
46
SDA
SCL
INTB
SDB
SYNC
40
IICRST
47
RSET
AD
35
43
44
5
12
34
48
SYNC
IICRS
RSET
ADDR1
ADDR2
PGND
PGND
AGND
GND
CLK
3V
GND
DIO
USB_DP
USB_DM
SDB
INTB
R11
100K
R5
20K
R7
100K
GND
Micro USB
PVCC
10uF
GND
C4
10uF
C12
D1
D2
DFL240
DFL240
1
USB_DM
2
USB_DP
3
4
5
GND
VCC
USB_DM
USB_DP
NC
GND
Con4
U1 VCC
C3
1uF
1
3
2
3V Power
U1
VDD
SD
GND
LDO
BP
4
VOUT
5
3V
OSC
C1
1uF
OSC_OUT
Y1
8M
C6
33P
C7
USB_DM
USB_DP
3V
R3
R4
22R
R2
22R
C2
10nF
OSC_IN
33P
1.5K
GND
CS2
9
CS4
10
CS6
11
CS8
12
CS10
13
CS12
14
CS14
15
CS16
16
9
10
11
12
13
14
15
16
Con1
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
CS1
CS3
CS5
CS7
CS9
CS11
CS13
CS15
IO
SW11
SW9
SW7
SW5
SW3
SW1
6
5
4
3
2
1
6
5
4
3
2
1
Con2
12
11
10
9
8
7
12
11
10
9
8
7
SW12
SW10
SW8
SW6
SW4
SW2
GND
GND
CLK
DIO
3.3V
IICRST
SYNC
INTB
SDA
SCL
AD1
AD1
GND
SCL
SDA
PVCC
VIO
SDB
GND
GND
CON3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
GND
1
2
J1
PVCC
1
2
J2
3V
VIO
J3
Header 2H
1
2
PVCC
U1 VCC
J4
Header 2H
1
2
LED Array
2CS1
2CS2
2CS3
2CS4
2CS5
2CS6
2CS7
2CS8
2SW12
2SW11
2SW10
2SW9
2SW8
2SW7
2SW6
2SW5
2SW4
2SW3
2SW2
2SW1
LD177
LD161
LD145
LD129
LD113
LD97
LD81
LD65
LD49
LD33
LD17
LD1
LD178
LD162
LD146
LD130
LD114
LD98
LD82
LD66
LD50
LD34
LD18
LD2
LD179
LD163
LD147
LD131
LD115
LD99
LD83
LD67
LD51
LD35
LD19
LD3
LD180
LD164
LD148
LD132
LD116
LD100
LD84
LD68
LD52
LD36
LD20
LD4
LD181
LD165
LD149
LD133
LD117
LD101
LD85
LD69
LD53
LD37
LD21
LD5
LD182
LD166
LD150
LD134
LD118
LD102
LD86
LD70
LD54
LD38
LD22
LD6
LD183
LD167
LD151
LD135
LD119
LD103
LD87
LD71
LD55
LD39
LD23
LD7
LD184
LD168
LD152
LD136
LD120
LD104
LD88
LD72
LD56
LD40
LD24
LD8
2SW12
LD185
2SW11
LD169
2SW10
LD153
2SW9
2SW8
2SW7
2SW6
2SW5
2SW4
2SW3
2SW2
2SW1
LD137
LD121
LD105
LD89
LD73
LD57
LD41
LD25
LD9
2CS9
LD186
LD170
LD154
LD138
LD122
LD106
LD90
LD74
LD58
LD42
LD26
LD10
2CS10
LD187
LD171
LD155
LD139
LD123
LD107
LD91
LD75
LD59
LD43
LD27
LD11
2CS11
LD188
LD172
LD156
LD140
LD124
LD108
LD92
LD76
LD60
LD44
LD28
LD12
2CS12
LD189
LD173
LD157
LD141
LD125
LD109
LD93
LD77
LD61
LD45
LD29
LD13
2CS13
LD190
LD174
LD158
LD142
LD126
LD110
LD94
LD78
LD62
LD46
LD30
LD14
2CS14
LD191
LD175
LD159
LD143
LD127
LD111
LD95
LD79
LD63
LD47
LD31
LD15
2CS15
LD192
LD176
LD160
LD144
LD128
LD112
LD96
LD80
LD64
LD48
LD32
LD16
2CS16
Figure 2: IS31FL3733 Application Schematic
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 01/20/2017
3
12×16 MATRIX LED DRIVER
BILL OF MATERIALS
Name
MCU
LDO
Symbol
U2
U1
Reduced voltage
Microcontroller
Description
Qty
1
1
SGMICRO
STM
ISSI
Supplier
SGM2019-3.3V
IS31FL3733
DFLS240
HC-49S
Part No.
LED Driver
Diode
Diode
LD1~LD192
D1,D2
Y1
U3
Matrix LED Driver
Diode, SMD
Blue LED, SMD
192
2
1
1
STM32F103C8T6
9-217/BHC-ZL1M2RY/3T
Everlight
JB
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Button
Resistor
Crystal
R1,R7,R8,
R9,R11
R2,R4
R3
R5
Crystal, 8MHz
DIODES
Yageo
Yageo
Yageo
Yageo
RES,22R,1/16W,±5%,SMD
RES,20k,1/16W,±5%,SMD
RES,100k,1/16W,±5%,SMD
RES,1.5k,1/16W,±5%,SMD
2
1
5
RC0603JR-07100KL
RC0603JR-0722RL
RC0603JR-0720KL
RC0603JR-0710KL
RC0603JR-0791KL
CC0603KKX7R9BB105
CC0603KKX7R9BB106
CC0603KKX7R9BB100
RC0603JR-071K5L
1
2
R6,R12
R13
R14
C1,C3,C5
C4,12
C2
R10
RES,1k,1/16W,±5%,SMD
Yageo
Yageo
Yageo
Yageo
RES,10k,1/16W,±5%,SMD
RES,91k,1/16W,±5%,SMD
NC
1
1
RC0603JR-0701KL
CAP,10pF,16V,±20%,SMD
CAP,33pF,16V,±20%,SMD
Button SMD
CAP,1µF,16V,±20%,SMD
C8,C9,C10
K1
C6,C7
CAP,10uF,16V, ±20%,SMD
CAP,0.1µF,16V,±20%,SMD
1
2
3
1
2
3
Yageo
Yageo
Yageo
Yageo
CC0603KKX7R9BB330
1
CC0603KKX7R9BB104
Bill of Materials, refer to Figure 2 above.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 01/20/2017
4
12×16 MATRIX LED DRIVER
Figure 3: Board Component Placement Guide - Top Layer
Figure 4: Board PCB Layout - Top Layer
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 01/20/2017
5
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