Home > Components > Displays > ILI9341 2.8" TFT LCD

ILI9341 2.8" TFT LCD

A fast, bright 320x240 full-color TFT display featuring an SPI interface.

Component Preview

ILI9341 TFT

This module provides a beautiful 2.8" LCD with an ILI9341 driver. Because it uses the SPI bus, it requires very few pins to draw complex, full-color graphics.

DisplaysSPIColor

Overview

The ILI9341 is extremely fast and well-supported by libraries like Adafruit_GFX and TFT_eSPI. Note that this specific component model does not include a resistive touch overlay.

Pin Reference

Pin	Type	Description
VCC	power	Power supply (3.3V or 5V depending on board regulator).
GND	power	Common ground.
CS	digital	TFT Chip Select. Active LOW.
RESET	digital	Hardware Reset. Connect to an Arduino pin or 3.3V.
DC	digital	Data/Command. Tells the screen if the incoming bytes are data or commands.
MOSI	digital	SPI Data In.
SCK	digital	SPI Clock.
LED	power	Backlight power. Usually connected to 3.3V.
MISO	digital	SPI Data Out. Needed to read from the display.

Configurable Attributes

This component has no standard configurable attributes.

Working Principle

The display expects a continuous stream of RGB pixel data over the SPI bus.

Wiring Diagram (Arduino Uno)

Example Arduino Code

This code requires the Adafruit_ILI9341 and Adafruit_GFX libraries.

#include <SPI.h>
#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>

#define TFT_CS 10
#define TFT_DC 9

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

void setup() {
  tft.begin();
  tft.setRotation(1);
  tft.fillScreen(ILI9341_BLACK);
  
  tft.setCursor(20, 100);
  tft.setTextColor(ILI9341_WHITE);
  tft.setTextSize(3);
  tft.println("OpenHW Studio");
  
  tft.setCursor(20, 140);
  tft.setTextSize(2);
  tft.println("TFT Ready");
  
  delay(2000);
  tft.fillScreen(ILI9341_BLACK);
}

void loop() {
  tft.setCursor(35, 140);
  tft.setTextSize(2);
  tft.setTextColor(ILI9341_WHITE, ILI9341_BLACK);
  tft.print("Time: ");
  tft.print(millis() / 1000);
  tft.print("s  ");
  delay(500);
}

Simulation Notes

• The simulator updates the display directly from the emulated SPI traffic.

---

← Previous: ILI9341 Touch

Next: INMP441 Mic →