1. Introduction
This manual provides comprehensive instructions for the DWIN 4.3 Inch 480x800 TFT LCD HMI Display Module. It covers product features, hardware overview, technical specifications, setup procedures, operating principles, maintenance guidelines, troubleshooting tips, and support information. This module is designed for various human-machine interface applications, offering a versatile display solution with optional touch capabilities.
2. Key Features
- Based on self-designed T5L1 ASIC, offering 16.7M colors and 24-bit depth.
- 480x800 pixel TFT LCD resolution.
- Available with no touch screen, resistive touch screen, or capacitive touch screen options.
- TTL Interface with a 10Pin 1.0mm FCC connection wire.
- Supports program download via SD card or online serial port.
- Easy-to-use DWIN DGUS II GUIs Development, requiring no coding skills.
- Dual Development System: DGUS II / TA (Instruction set).
- IPS Wide Viewing Angle: 85°/85°/85°/85° (Left/Right/Up/Down).
- Resilient against hot and cold environments, operating from -10°C to 60°C.
- Features a T5L ASIC, DWIN's self-developed HMI IC with dual-core 8051 chips.
- Upgraded version for simplified control and enhanced functionality.
3. Hardware Overview
The DWIN HMI Display Module integrates essential components for robust performance. Below is a diagram illustrating the main hardware elements and interfaces.

The module also features reserved interfaces for WiFi and USB modules, enabling quick response to networking needs and configuration file updates.

The module comes with various accessories to facilitate development and integration:

4. Specifications
Detailed technical specifications for the DWIN 4.3 Inch HMI Display Module are provided below.

4.1 Display Parameters
| Parameter | Value |
|---|---|
| LCD Type | IPS, TFT LCD |
| Viewing Angle | Wide viewing angle, 85°/85°/85°/85° (L/R/U/D) |
| Resolution | 480x800 pixels (support 0°/90°/180°/270°) |
| Color | 24-bit 8R8G8B |
| Active Area (A.A.) | 56.16mm (W) × 93.6mm (H) |
| View Area (V.A.) | WTC: 56.6mm (W) × 94.0mm (H) WTR&WN: - |
| Backlight Mode | LED |
| Backlight Service Life | >10000 hours (Time of the brightness decaying to 50% on the condition of continuous working with the maximum brightness) |
| Brightness | WTC: 250nit WTR: 250nit WN: 300nit |
| Brightness Control | 0~100 grade (When the brightness is adjusted to 1%~30% of the maximum brightness, flickering may occur and is not recommended to use in this range) |
4.2 Serial Interface Parameters
| Parameter | Value |
|---|---|
| Mode | UART2: ON=TTL/CMOS UART4: ON=TTL/CMOS (Only available after OS configuration) |
| Voltage Level | Output 1, Iout = -4mA: Min 3.0V, Typ 3.3V Output 0, Iout = 4mA: Typ 0V, Max 0.3V Input 1: Min 2.4V, Typ 3.3V, Max 5.0V Input 0: Min 0V, Max 0.5V |
| Baud Rate | 3150~3225600bps, typical value of 115200bps |
| Data Format | UART2: N81 UART4: N81/E81/O81/N82, 4 modes (OS configuration) |
| Interface Cable | 10Pin_1.0mm |
4.3 Electrical Specifications
| Parameter | Value |
|---|---|
| Rated Power | <5W |
| Operating Voltage | 4.5~5.5V, typical value of 5V |
| Operating Current | 260mA (VCC=5V, max backlight) 80mA (VCC=5V, backlight off) |
| Recommended Power Supply | 5V 1A DC |
4.4 Operating Environment
| Parameter | Value |
|---|---|
| Operating Temperature | -10℃~60℃ (5V @ 60% RH) |
| Storage Temperature | -20℃~70℃ |
| Conformal Coating | None |
| Operating Humidity | 10%~90%RH, typical value of 60% RH |
4.5 Electrostatic Discharge Test
Test temperature: 25°C. Test humidity: 50%RH. The product was tested for contact and air discharge on the serial screen iron frame and display area. Performance is in line with GB/T 17626.2 B level and above.
| Discharge Type | Discharge Value | Result |
|---|---|---|
| Contact discharge | ±4KV | Normal operation |
| Air discharge | ±4KV | Normal operation |
4.6 Packaging & Dimensions
| Parameter | Value |
|---|---|
| Form Factor | WTC: 63.0mm (W) × 120.7mm (H) × 14.1mm (T) WTR: 63.0mm (W) × 120.7mm (H) × 13.8mm (T) WN: 63.0mm (W) × 120.7mm (H) × 12.3mm (T) |
| Installation Dimensions | WTC: Positioning hole: 103.7(+0.3mm) × 63.0(+0.3mm) WTR&WN: Positioning hole: 103.7(+0.3mm) × 62.0(+0.3mm) |
| Net Weight | WTC: 105g WTR: 100g WN: 80g |
5. Setup and Development
To begin development with your DWIN LCD Module, follow these steps:
- Check Software Platform: Refer to the datasheet to identify the specific software platform required for your screen.
- Develop with SDK: Use the correct development SDK (Software Development Kit) corresponding to your platform to complete your application development.
- Update and Test: Update the developed software program to the LCD module and perform thorough testing.
- Final Assembly: Once testing is successful, you can proceed to assemble the module into your machine or system.
The UI development process involves several key steps to bring your interface to life:

6. Operating Instructions
The DWIN HMI Display Module operates on a principle of UART communication with a Microcontroller Unit (MCU). The smart TFT display, equipped with its own CPU, receives instructions from any MCU controller via UART to interact with the connected equipment.

The module supports a wide range of touch and display functions, enabling rich UI functionality without complex coding.

Watch this video for a demonstration of the touch and display functions:
7. Maintenance
To ensure the longevity and optimal performance of your DWIN LCD module, adhere to the following environmental and handling guidelines:
7.1 Environmental Conditions
- Operating Temperature: Maintain an ambient temperature between -10℃ and 60℃ (at 5V and 60% RH).
- Storage Temperature: Store the module in temperatures ranging from -20℃ to 70℃.
- Operating Humidity: Ensure the operating humidity is between 10% and 90% RH, with a typical value of 60% RH.
- Conformal Coating: This module does not have conformal coating. Protect it from moisture and corrosive environments.
7.2 Electrostatic Discharge (ESD) Precautions
The module has been tested for ESD resistance and performs normally under ±4KV contact and air discharge. However, it is always recommended to take standard ESD precautions when handling the module to prevent potential damage:
- Wear an anti-static wrist strap.
- Work on an anti-static mat.
- Avoid touching the display surface or electronic components directly.
8. Troubleshooting
8.1 Common Issues and Solutions
- Issue: LCD module does not function correctly after assembly.
- Solution: It is crucial to update the program to the LCD module *before* final assembly. Ensure you have followed the setup steps: checked the software platform, used the correct development SDK, updated the software program, and tested it thoroughly before integrating it into your machine.
9. User Tips
- Pre-Assembly Programming: Always update the program to the LCD module before final assembly into your machine to avoid potential functionality issues.
- Flexible Procurement: There is no Minimum Order Quantity (MOQ) for standard DWIN products, allowing for flexible purchasing based on your project needs.
- Development Resources: Utilize the extensive online resources provided by DWIN, including developer forums, international websites, development tools, and video tutorials, to streamline your project development.
10. Warranty and Support
DWIN provides comprehensive technical support for its products. If you encounter any issues or require assistance, please use the following contact methods:

10.1 Technical Support Channels
- Whatsapp: +86 19192113166 (Free one-to-one technical support, working hours: PST 16:30-6:00 every day)
- Customer Service Email: dwinhmi@dwin.com.cn
- DWIN Developer Forum: https://forums.dwin-global.com/ (For documents, software, demo downloads, FAQs, and community exchange)
- International Website: https://www.dwin-global.com/
- Development Tool Page: https://www.dwin-global.com/tool-page/
- Development Guide: https://www.dwin-global.com/development-guide/
- DGUS Video Tutorial: https://www.dwin-global.com/t5l-dgus-v7-6-video-tutorial/
- AliExpress Messages: You can also leave messages directly on AliExpress for support.


