Sunton / CYD · ESP32-S3 · 4.3" · 800×480
Sunton (CYD) ESP32-8048S043C 4.3" specifications
The Sunton (CYD) ESP32-8048S043C 4.3" is a 4.3" 800×480 display board by Sunton / CYD, built around the ESP32-S3 (ESP32-S3-WROOM-1 module) running at 240 MHz. The panel uses a ST7262 (RGB Parallel) controller over RGB565 Parallel (DPI), with GT911 (I2C) — C variant. There is also an XPT2046 resistive (R) version, which uses a different driver. touch input. Memory: 16 MB flash, 8 MB PSRAM; wireless: Wi-Fi and Bluetooth. LCD Ultra Pro supports it with a ready-made LVGL 8.4 display driver, so you can design its UI visually and export a complete Arduino project.
- Screen
- 4.3" · 800×480
- Chip
- ESP32-S3
- Memory
- 16 MB flash, 8 MB PSRAM
- Input
- resistive touch
Specifications
| Manufacturer | Sunton / CYD |
|---|---|
| Screen size | 4.3" |
| Resolution | 800×480 px |
| Colour depth | 16-bit |
| Display controller | ST7262 (RGB Parallel) |
| Display interface | RGB565 Parallel (DPI) |
| Touch | GT911 (I2C) — C variant. There is also an XPT2046 resistive (R) version, which uses a different driver. |
| Microcontroller | ESP32-S3 |
| Module | ESP32-S3-WROOM-1 |
| CPU clock | 240 MHz |
| Internal SRAM | 512 KB |
| PSRAM | 8 MB |
| Flash | 16 MB |
| Wi-Fi | Yes |
| Bluetooth | Yes |
| Hardware variant | Capacitive “C” version (GT911 touch). The resistive “R” version uses a different touch controller. |
Free GPIOs and connectors
These GPIOs are not used by the display, touch or on-board peripherals, so you can wire your own sensors, buttons or relays to them.
| Pin | Capabilities | Note |
|---|---|---|
| GPIO 0 | GPIO, BOOT | Boot button / IO0 |
| GPIO 17 | GPIO, PWM | On the P3 / P4 headers |
| GPIO 18 | GPIO, PWM | On the P3 / P4 headers — also the GT911 INT net, only connected after a solder mod (R17); this driver polls the touch |
| GPIO 43/TX | GPIO, UART_TX | UART0 TX — on the P1 header (shared with the USB-UART bridge) |
| GPIO 44/RX | GPIO, UART_RX | UART0 RX — on the P1 header (shared with the USB-UART bridge) |
- UART header (P1) — GPIO 43, 44 (TX, RX)
Shared with the USB-UART bridge — the serial monitor and uploads use it too
- GPIO header (P4) — GPIO 17, 18
P3 carries the same two pins
- I2C header (P3) — GPIO 19, 20 (SDA, SCL)
Same I2C bus as the GT911 touch controller. P3 also carries GPIO 17 / 18.
LVGL support in LCD Ultra Pro
| Driver status | Compile-tested |
|---|---|
| Arduino export | Complete LVGL 8.4 project with the display driver |
| USB Live preview | No |
| Orientations | 0° |
| Brightness control | Hardware backlight dimming |
Pick this board in the editor and the canvas matches its exact resolution and shape. Build the interface with widgets, add events without code, try it in Live Preview, then export it as a ready-to-compile Arduino project. See the documentation for the workflow.
Frequently asked questions
What is the resolution of the Sunton (CYD) ESP32-8048S043C 4.3"?
800×480 pixels on a 4.3" screen, driven at 16-bit colour depth.
Which display controller and interface does it use?
ST7262 (RGB Parallel) over RGB565 Parallel (DPI).
Does the Sunton (CYD) ESP32-8048S043C 4.3" have a touchscreen?
Yes — GT911 (I2C) — C variant. There is also an XPT2046 resistive (R) version, which uses a different driver..
Which ESP32 chip and how much memory does it have?
ESP32-S3 (ESP32-S3-WROOM-1) at 240 MHz, 16 MB flash, 8 MB PSRAM.
Which GPIOs are free for my own sensors or relays?
5 GPIOs are free: GPIO 0, GPIO 17, GPIO 18, GPIO 43/TX, GPIO 44/RX.
Can I use LVGL on the Sunton (CYD) ESP32-8048S043C 4.3"?
Yes. LCD Ultra Pro has a ready-made LVGL 8.4 display driver for this board (Compile-tested). Design the UI in the browser and export a ready-to-compile Arduino project.
Sources
Specifications cross-checked against the manufacturer’s documentation (last checked 2026-10-27):
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