Boards / All-in-one boards

LilyGO T-Display-S3

1.9" 170x320 ST7789 on an 8-bit parallel bus, CST816S touch on the touch model.

At a glance


Maker	LilyGO
MCU	ESP32-S3 Xtensa LX7 dual-core @ 240 MHz, 512 KB SRAM (+ up to 8 MB PSRAM)
Display	Sitronix ST7789, 170 x 320 px, 8-bit parallel (i80 / 8080), 16-bit colour
Touch	Hynitron CST816S (capacitive, I2C)
Backlight	GPIO 38, dimmable (PWM)
PSRAM	Yes
Graphics library	GFX Library for Arduino

ST7789 on 8-bit parallel (i80 / 8080): PAR8 clock 20 MHz, RGB colour order, inversion on.

CST816S: I2C address 0x15, 400 kHz.

The preset adds these to the Hardware tab with the board, so a sensor can go straight onto the connector.

Check your revision. GPIO15 must be driven HIGH to enable the LCD power rail before init. The generated sketch does this for you.

Choose LilyGO T-Display-S3 on the Hardware tab (or use the button above) and every pin on this page is filled in. The export writes the sketch, lcd_pins.h, the GFX Library for Arduino configuration, lv_conf.h and platformio.ini - a project that builds for this board as it comes.
The CST816S is capacitive and needs no calibration. The firmware resets it and checks it answers on every boot.
The backlight is dimmable: give a slider or a button a Set backlight action.
With PSRAM the LVGL memory pool can live there, leaving internal RAM for everything else.
Screens are designed for 170 x 320 px in either orientation, with LVGL 9 or LVGL 8.

ST7789. Excellent colour and tolerates 80 MHz SPI. Many modules have no CS pin - tie it low and set CS to -1.

CST816S. Single touch plus gestures. Standard on 1.28" round GC9A01 modules. Needs RST wired.

ESP32-S3. The only common Arduino target with a hardware RGB565 LCD peripheral. PSRAM is effectively required for RGB panels.

GFX Library for Arduino. Moshi Liu's library. Best QSPI/AMOLED and RGB coverage. Configured in code.

Nobody has published a design for this board yet. Publish yours from the designer and it appears here and in the gallery.