The HKT050ATA-C Topway LCD is a 5 inch smart TFT display module that talks to your controller over a simple serial link, so the screen handles the graphics while your board handles the logic. It is built as a 5 inch RS232 TFT LCD display with 800x480 resolution and a resistive touch panel, which makes it a practical choice for control panels, machine interfaces and engineering graduation projects.
Specifications
- Internal Reference: HKT050ATA.C
- Resolution: 800x480
- Interface: RS232
- Voltage: 6V~26V
- Temperature: -20°C ~ 70°C
- Outline: 160mm x 105mm x 27mm
- Size: 5"
- Protocol: Topway
- Active Area: 108mm x 64.8mm
- Touch Screen: RTP
- Casing: PC/ABS
Specifications Details
| Parameter | Specification |
|---|---|
| Manufacturer | TOPWAY Technology Co., Ltd. |
| Model | HKT050ATA-C |
| Product Type | Smart TFT LCD HMI Module |
| Screen Size | 5.0 inches |
| Resolution | 800 × 480 pixels |
| Color Depth | 65K colors (16-bit) |
| Pixel Configuration | RGB Stripe |
| Display Mode | Transmissive / Normally White |
| Viewing Direction | 6H (grayscale inverse) / 12H (normal) |
| Active Area | 108.0 × 64.8mm |
| Outline Dimensions | 160.0 × 105.0 × 27.0mm (maximum) |
| Touch Panel | Resistive Touch Panel |
| Backlight | LED |
| Surface Treatment | Glare Treatment (Anti-UV) |
| Typical Luminance | 650cd/m² |
| Typical Contrast Ratio | 600:1 |
| Typical Viewing Angle | 80° left, 80° right, 60° top, 80° bottom |
| Response Time | 20ms typical, 30ms maximum |
| Main Controller | Integrated 32-bit MCU |
| Graphics Engine | Onboard |
| Flash Memory | 256MB |
| Communication Interface | RS232 |
| USB Interface | USB |
| USB Function | File transfer / USB-drive mode |
| Input Voltage | 6–26V DC |
| Typical Supply Voltage | 12V DC |
| Operating Current | 210mA typical at 12V |
| USB Operating Current | 230mA typical |
| RTC | Supported, without battery |
| Buzzer | Built-in |
| Script Support | Lua script engine |
| Display Rotation | 90-degree rotation support |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -30°C to +80°C |
Technical Information
1. Display and Touch Panel
The HKT050ATA-C features a 5-inch TFT LCD with an 800 × 480 pixel resolution and 65K colors.
Its transmissive, normally white display uses LED backlighting and a glare-treated, anti-UV surface.
The integrated resistive touch panel enables direct interaction with the graphical interface, supporting touch coordinates and touch-key responses through the serial interface.
According to the manufacturer's optical specifications:
- Typical luminance: 650cd/m².
- Typical contrast ratio: 600:1.
- Typical horizontal viewing angles: 80° left and 80° right.
- Typical vertical viewing angles: 60° top and 80° bottom.
- Typical response time: 20ms.
2. Integrated MCU and Graphics Engine
The module includes an onboard 32-bit MCU and graphics engine to manage display operations and graphical content.
It supports TOPWAY SGTools for creating and preloading graphical interfaces, allowing the display to operate with stored interface resources without requiring the host controller to continuously generate the graphics.
Supported resources and functions include:
- TML graphical interface files.
- Picture and icon files.
- Custom flash memory.
- VP variables stored in RAM.
- Touch response and interface control.
- Lua script engine support.
3. RS232 Serial Communication
The primary communication interface is RS232, allowing the HKT050ATA-C to communicate with an external host controller or PC.
The accompanying SMART LCD Command Manual specifies a default serial configuration of 115200bps, 8 data bits, no parity, and 1 stop bit (8N1).
The K1 connector provides the following signals:
| Pin | Signal | Function |
|---|---|---|
| 1 | VDD | Power supply input |
| 2 | RX | Serial data input |
| 3 | TX | Serial data output |
| 4 | RTS (BUSY) | Request-to-send / busy signal |
| 5 | NC | Not connected |
| 6 | VSS | Ground |
Hardware flow control is recommended by the manufacturer.
Important: This is an RS232 electrical interface, not a standard 3.3V or 5V TTL UART. A suitable RS232 level converter is required when connecting it to common microcontrollers such as Arduino or ESP32.
4. USB Interface
The HKT050ATA-C provides a USB interface for transferring graphical resources from a PC.
The K3 connector includes:
- VUSB: 5V USB supply.
- D-: USB differential data negative.
- D+: USB differential data positive.
- ID: USB identification.
- VSS: Ground.
The USB interface supports loading TML files and image resources into the module using USB-drive functionality. An appropriate OTG cable is used for the download process.
During file transfer, other display functions are suspended.
5. Power Supply and Electrical Characteristics
The module operates from a DC supply between 6V and 26V, with 12V specified as the typical operating voltage.
| Parameter | Specification |
|---|---|
| Minimum Input Voltage | 6V DC |
| Typical Input Voltage | 12V DC |
| Maximum Input Voltage | 26V DC |
| Typical Operating Current | 210mA at 12V |
| Typical USB Operating Current | 230mA |
| RTC Battery Supply Current | 2µA typical |
The current specifications are typical values under the conditions stated in the manufacturer's datasheet.
6. Built-In Functions and Memory
The HKT050ATA-C provides several integrated functions for embedded HMI applications:
- 256MB Flash Memory: Stores preloaded graphical interfaces, pictures, icons, and other resources.
- RTC: Provides real-time clock functionality. The datasheet specifies RTC without a battery.
- Buzzer: Supports audible notifications and user feedback.
- Lua Script Engine: Provides additional scripting capabilities.
- 90-Degree Rotation: Supports alternative display orientations.
- Custom Memories: Flash memory areas accessible through the host interface.
- VP Variables: RAM-based variables that can be accessed by the host controller and displayed through the graphical interface.
7. Development and Programming
The HKT050ATA-C supports graphical interface development using TOPWAY SGTools.
A typical development workflow is:
- Install TOPWAY SGTools.
- Design the graphical interface and import pictures and icons.
- Download the interface resources to the display using USB and an appropriate OTG cable.
- Power on the display and run the preloaded interface.
- Connect an external host controller through RS232 to exchange commands and real-time data.
The accompanying SMART LCD Command V5.04 manual documents the communication protocol, including display control, touch responses, memory access, VP variable operations, RTC commands, buzzer control, and backlight adjustment.
Features
- IP65 waterproof and dustproof bezel, anti-UV coating, suitable for outdoor environment
- Wide operating voltage
- Upgradable through PC or USB OTG
- Stable and reliable resistive touch
- Smart LCD Module Development Tool - SGTools
5 Inch RS232 TFT LCD Display With 800x480 Resolution
This 5 inch RS232 TFT LCD display gives you an 800x480 pixel area of 108 x 64.8 mm, enough room for gauges, buttons, status text and icons on one screen. According to the manufacturer's datasheet, the panel shows 65k colors (16-bit), reaches a typical brightness of 650 cd/m² and has a contrast ratio of 600 (typical), with an anti-UV glare treatment on the surface. The 800x480 resolution keeps small text readable, and the resistive touch panel responds to a finger, a stylus or a gloved hand.
Industrial Smart TFT LCD Module for Serial Control
As an industrial smart TFT LCD module, the HKT050ATA-C does not need your controller to draw every pixel. You design the screens in advance with the SGTools development tool, load them into the module, and then your controller only sends short serial commands over RS232 to change what is shown. The datasheet lists a default serial setting of 115200 bps, 8N1, and projects can be downloaded from a PC or from a USB drive using an OTG cable. This approach keeps your main code simple and works with any controller that can send serial data, as long as the signal levels match.
Resistive Touch TFT LCD 800x480: Power and Mounting
The resistive touch TFT LCD 800x480 module accepts a wide supply of 6V to 26V, with 12V as the typical value, and the datasheet gives a typical operating current of about 210 mA. The serial connector exposes VDD, RX, TX, RTS (BUSY) and VSS, so wiring is limited to power, ground and the data lines. Before connecting it to a 3.3V or 5V microcontroller, check the logic level of your controller against the RS232 interface of the module and use a level converter if needed. The casing measures 160 x 105 x 27 mm, and the operating temperature range is -20°C to 70°C.
Looking for a different screen size in the same Topway family? See the HKT070DTA-1C 7" Topway LCD or the HKT104ATA-C 10.4" Topway LCD, or browse the full UART smart TFT LCD category.
Frequently Asked Questions
What interface does the HKT050ATA-C use?
It uses an RS232 serial command interface with the Topway protocol. The default setting is 115200 bps, 8N1.
What is the resolution and size of this display?
It is a 5 inch TFT display with an 800x480 resolution and an active area of 108 x 64.8 mm.
Is the HKT050ATA-C resistive or capacitive touch?
It uses a resistive touch panel (RTP).
How to power a Topway smart LCD like this one?
The module accepts 6V to 26V, with 12V typical. Connect VDD and VSS to your power source and RX/TX to your controller's serial lines.
How to update a Topway smart LCD with new screens?
You can download your project from a PC or from a USB drive with an OTG cable. The screens are prepared in advance with the SGTools development tool.
Can I use it with a microcontroller board?
Yes, any controller that can send serial commands can drive it. Check that the logic levels match, and add a level converter when required.
What temperature range does it support?
Its operating temperature range is -20°C to 70°C.
The HKT050ATA-C Topway LCD combines an 800x480 screen, resistive touch, a wide 6V to 26V supply and simple serial control in one compact module. If you are building a control panel or planning engineering graduation projects this term, RAM Electronics offers the HKT050ATA-C in Egypt along with the rest of the Topway smart LCD range. Contact us if you need help choosing the right screen size.