16x12 G click

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  • MIKROE-2758
  • MIKROE-2758
16x12 G click carries a 16x12 LED display and the  IS31FL3733  matrix driver. The...more
Product information "16x12 G click"

16x12 G click carries a 16x12 LED display and the IS31FL3733 matrix driver. The click is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over I2C interface, and the following pins on the mikroBUS™ line: INT, RST, CS.

Each LED can be controlled individually – both for on/off control and light intensity.

IS31FL3733 driver features

The IS31FL3733 is a general purpose 12×16 LEDs matrix driver with 1/12 cycle rate.

Each of the 192 LEDs can be dimmed individually with 8-bit PWM data, which allows 256 steps of linear dimming.

The driver has selectable 3 Auto Breath Modes for each LED ( ABM-1, ABM-2, and ABM-3).


Type LED Matrix
Applications Gaming devices, small handheld devices, home appliances, IoT devices, etc.
On-board modules IS31FL3733 matrix driver
Key Features Selectable 3 Auto Breath Modes for each dot, Individual 256 PWM control steps
Key Benefits Each of the 192 LEDs can be dimmed individually
Interface GPIO,I2C
Input Voltage 3.3V or 5V
Click board size L (57.15 x 25.4 mm)

Pinout diagram

This table shows how the pinout on 16x12 G click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

NotesPinMikrobus logo.pngPinNotes
  NC 1 AN PWM 16 NC  
Reset RST 2 RST INT 15 INT Interrupt pin
Standby  SDB 3 CS TX 14 NC  
  NC 4 SCK RX 13 NC  
  NC 5 MISO SCL 12 SCL I2C clock
  NC 6 MOSI SDA 11 SDA I2C data
Power supply +3.3V 7 3.3V 5V 10 +5V Power supply
Ground GND 8 GND GND 9 GND Ground

Jumpers and settings

DesignatorNameDefault PositionDefault OptionDescription
JP1 PWR.SEL. Left 3V3 Power Supply Voltage Selection 3V3/5V, left position 3V3, right position 5V
JP2 ADDR. 1 Left 0 The last two bits of the I2C address
JP2 ADDR. 2 Left 0 The last two bits of the I2C address


Code examples for 16x12 G click, written for MikroElektronika hardware and compilers are available on Libstock.

Code snippet

The following code snippet shows the default initialization procedure for 16x12 G click board™.

01 IS31FL3733_init( &instance, _IS31FL3733_GND_ADDR, _IS31FL3733_GND_ADDR,
02                      I2C2_Start, I2C2_Stop, I2C2_Write, I2C2_Read );
03     IS31FL3733_setGCC( &instance, 64 );
04     // PWM control mode (default)
05     for( i = 0; i < _IS31FL3733_CS; ++i )
06     {
07         // Set PWM values for all LEDs at i-th row to 55/255 level.
08         IS31FL3733_setLEDPWM ( &instance, i, _IS31FL3733_SW, 55 );
09         // Turn on selected LEDs.
10         IS31FL3733_setLEDState ( &instance, i, _IS31FL3733_SW,
11                                  _IS31FL3733_LED_STATE_ON );
12     }
13     // Clear the matrix
14     IS31FL3733_clearMatrix( &instance );


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