ILI9341 TFT LCD controller connection guide
ILI9341 TFT LCD controller MSP3223 · 14-contact header wiring guide with power, signal assignments, and bench checks.
MSP3223 · 14-contact header
14 contacts Current packageBring up the display over SPI
RequiredUse a regulated 5 V module supply and a 3.3 V SPI host with a common ground. Start with the display-only manufacturer example and remove any SD card during the test. Leave the capacitive touch lines disconnected.
- +5 V
- VCC (1)
- Regulated module supply
- Ground
- GND (2)
- Host ground
- Chip select
- LCD_CS (3)
- Host GPIO
- Display reset
- LCD_RST (4)
- Host reset GPIO
- Command / data
- LCD_RS (5)
- Host D/C GPIO
- Serial clock
- SCK (7)
- Host SCK
- Host to display
- SDI (6)
- Host MOSI
Bench checks
- Confirm supply and ground at the module before starting the panel. Observe reset, chip select and clock with a logic analyzer if the panel stays blank.
- Run the MSP3223 initialization and fill the panel with red, green, blue, and black test frames. If the panel is lit but white, check that LCD_RS is low for the command byte and high for parameters.
LCDWiki MSP3223 product specification, Interface Definition and module schematic. ILI Technology ILI9341 v1.09, §§ 6–7 and command table. Manufacturer PDF mirrored by Electrónicos Caldas.
MSP3223 · 14-contact header wiring map
8 · LED
Backlight control. The board schematic allows this input to be open or high for illumination.
Models and documents
The map covers the LCDWiki MSP3223 2.54 mm header. The manufacturer lists the same signals on its separate 0.5 mm FPC connector. Consult the Ilitek pad table for a bare chip-on-glass design.
- MSP3223
- 3.2-inch module with capacitive touch.
- LCDWiki MSP3223 manufacturer documentation· LCDWiki MSP3223 product specification, Interface Definition and module schematic.
- ILI9341 controller datasheet· ILI Technology ILI9341 v1.09, §§ 6–7 and command table. Manufacturer PDF mirrored by Electrónicos Caldas.