The ESP32-S3-Touch-LCD-4.3 (Type B) packs a dual-core Xtensa LX7 processor, 4.3-inch capacitive touchscreen, wireless connectivity, and industrial I/O into a compact form factor. The Type B variant adds a real-time clock, wide voltage input, and optically isolated digital I/O for embedded and industrial applications.
| Parameter | Value |
|---|
| SoC | ESP32-S3 (Xtensa LX7 dual-core) |
| Module | ESP32-S3-WROOM-1-N16R8 |
| Clock Speed | Up to 240 MHz |
| Flash | 16 MB |
| PSRAM | 8 MB (OPI) |
| SRAM | 512 KB |
| ROM | 384 KB |
| Parameter | Value |
|---|
| WiFi | 802.11 b/g/n (2.4 GHz) |
| Bluetooth | 5.0 (LE + Classic) |
| Antenna | Onboard PCB antenna |
| Parameter | Value |
|---|
| Size | 4.3 inches |
| Type | IPS LCD (ST7262 controller) |
| Resolution | 800 x 480 pixels |
| Color Depth | 65K (RGB565, 16-bit) |
| Brightness | 550 cd/m² |
| Viewing Angle | 160 degrees (all directions) |
| Interface | 16-bit RGB parallel |
| Pixel Clock | 21 MHz |
| Parameter | Value |
|---|
| Controller | GT911 |
| Type | Capacitive |
| Points | 5-point multi-touch |
| Interface | I2C (0x5D) |
| Panel | Toughened glass |
| Parameter | Value |
|---|
| CAN | CAN 2.0 via TJA1051T (TWAI peripheral) |
| RS-485 | Half-duplex via SP3485 |
| I2C | Shared bus (GT911, CH422G, PCF85063A) |
| SPI | SD card interface |
| USB (UART) | CH343P bridge (Type-C2, top port) |
| USB (Native) | OTG/Host via FSUSB42 mux (Type-C1, side port) |
The Type B variant extends the standard board with features aimed at industrial and always-on deployments.
| Parameter | Value |
|---|
| RTC | PCF85063A with CR927 backup battery |
| Wide Voltage Input | 7-36V DC |
| Isolated Inputs | 2x optocoupler, 5-36V range |
| Isolated Outputs | 2x open-drain, 5-36V, 450mA max each |
| Parameter | Value |
|---|
| Input Voltage | USB-C 5V or DC 7-36V (Type B) |
| LDO | SGM2212-3.3 (800mA) |
| Battery Charger | CS8501 (Li-Po, 580mA charge current) |
| Battery Connector | MX1.25 2-pin |
| Recommended Battery | 3.7V Li-Po, max 2000mAh |
| Backlight Driver | MP3302DJ boost converter |
| Backlight Current | 580mA default (adjustable via R8) |
| Current Consumption | ~450mA at 5V (display on) |
| Parameter | Value |
|---|
| Board Dimensions | 112.4 x 75.1 mm |
| With Case | 116.3 x 79 mm |
| Display Active Area | 95.54 x 54.36 mm |
| Mounting | M3 mounting holes |
| Parameter | Value |
|---|
| Operating Temperature | 0 to 65 C |
The board includes ESD and transient voltage protection on all external-facing interfaces.
| Interface | Protection Device |
|---|
| USB ESD | LESD8LH5.0CT5G |
| RS-485 TVS | SMAJ12CA |
| CAN TVS | SM24CANB-02HTG |
| LED | Function |
|---|
| PWR | Power supply present |
| CHG | Battery charging active |
| DONE | Battery charge complete |
These figures provide a baseline for display performance expectations when building LVGL-based interfaces.
| Metric | Value |
|---|
| Average FPS (benchmark demo) | ~26 FPS |
| Interface frame rate | 41 FPS |
| PCLK frequency | 21 MHz |
| Test conditions | ESP-IDF v5.3, single-core |
