Spark Logic

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 package

ILI Technology ·

Bring up the display over SPI

Required

Use 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.

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

Highlighted contacts are used in the required step or selected circuit. Select a contact to inspect it.

MSP3223 · 14-contact header
Follow the numbered contact or silkscreen on the exact module. The display and solder sides mirror each other.
Selected pin details

10 · CTP_SCL

Input · Clock inputs / oscillator

Capacitive touch I²C clock.

LCDWiki MSP3223 product specification, Interface Definition and module schematic.

Electrical limits · Pin in the reference

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.