Display SPI
The host sends the clock and display data. The separate D/C line distinguishes command or register index from data.
ILI9340 TFT LCD controller pinout
The ILI9340 drives a 240 × 320 TFT display. The original Adafruit 1480 board marked ILI9340C uses a write-only SPI connection to the display and shares the bus with a microSD slot.
Adafruit 1480 (ILI9340C) · 10-contact header
10 contacts Current packageAdafruit 1480 (ILI9340C) · 10-contact header pinout
Adafruit 1480 (ILI9340C) · 10-contact header
7 · MOSI
Data from the host to the display and microSD slot.
All 10 pins
| Pin | Signal | Direction | Function |
|---|---|---|---|
| 1 | GND Supply return | Supply return | Connect to host ground. |
| 2 | VIN Supply input | Supply input | 3–5 V DC breakout supply. |
| 3 | D/C Input | Input | Low for a display command, high for display data. |
| 4 | RST Input | Input | Active-low display reset. The breakout also resets automatically on power-up. |
| 5 | SDCS Input | Input | Active-low microSD select. |
| 6 | CS Input | Input | Active-low display select. |
| 7 | MOSI Input | Input | Data from the host to the display and microSD slot. |
| 8 | MISO Output | Output | 3.3 V data from the microSD slot. |
| 9 | SCK Input | Input | Host clock for the display and microSD slot. |
| 10 | BL Input | Input | PWM backlight input, pulled high by default. |
Signal assignments
Electrical limits
| Parameter | Limit | Conditions and source |
|---|---|---|
| Breakout supply3–5 V DC | 3–5 V DC | Applies to VIN on the Adafruit board. Adafruit product 1480, 2.2-inch TFT Display guide, Pinouts and original board photograph. |
| Host logic3–5 V inputs, 3.3 V MISO output | 3–5 V inputs, 3.3 V MISO output | MISO is used for the microSD slot. Adafruit product 1480, 2.2-inch TFT Display guide, Pinouts and original board photograph. |
| Panel pixels240 × 320 | 240 × 320 | Use the ILI9340 initialization and rotation settings. Adafruit product 1480, 2.2-inch TFT Display guide, Pinouts and original board photograph. |
Models and documents
The pin map follows the 10 through-holes on the original Adafruit 1480 board marked ILI9340C. On the front of the board, the map starts at GND and ends at BL. Adafruit’s newer board guide also describes an EYESPI connector.
- Adafruit 1480 (ILI9340C)
- Original 2.2-inch 240 × 320 board, 10-contact header, ordered from GND toward BL.
- Adafruit 1480 (ILI9340C board) manufacturer documentation· Adafruit product 1480, 2.2-inch TFT Display guide, Pinouts and original board photograph.
- ILI9340 controller datasheet· ILI Technology ILI9340 datasheet, MCU interface and command descriptions.