ILI9341 TFT Reference
A 240×320 colour TFT display driven over SPI, 3.3V logic.
Pin names
| Name | Description |
|---|---|
| VCC | Power (3.3V) |
| GND | Ground |
| CS | Chip Select |
| RST | Reset |
| D/C | Data/Command |
| MOSI | SPI data in |
| SCK | SPI clock |
| LED | Backlight |
| MISO | SPI data out |
Attributes
This component has no configurable attributes.
Usage
Connect VCC and LED to 3.3V, GND to GND, MOSI/SCK/MISO to the board's hardware SPI pins (11/13/12 on an Uno), and CS, RST, D/C to any free digital pins. Drive it with the Adafruit ILI9341 + GFX libraries.
#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>
#include <SPI.h>
#define TFT_CS 10
#define TFT_RST 9
#define TFT_DC 8
Adafruit_ILI9341 tft(TFT_CS, TFT_DC, TFT_RST);
void setup() {
tft.begin();
tft.setRotation(1); // landscape
tft.fillScreen(ILI9341_BLACK);
tft.fillRect(10, 10, 100, 60, ILI9341_RED);
tft.fillCircle(200, 100, 40, ILI9341_CYAN);
tft.setTextColor(ILI9341_WHITE);
tft.setTextSize(2);
tft.setCursor(20, 90);
tft.print("ILI9341!");
}
void loop() {}This display runs on 3.3V logic — on real 5V hardware, add level shifters on the SPI and control lines. Power the backlight (LED) through a 100 Ω resistor in real hardware.
Examples
| Description | Attrs |
|---|---|
| Default 240×320 TFT | {} |
See also
- SSD1306 OLED — smaller monochrome alternative over I²C
- LCD 1602 — text-only alternative using a parallel bus