HMT150ATA-D Smart TFT LCD Module – 15.0" Capacitive Touch Display - TOPWAY

Product Description

The TOPWAY HMT150ATA-D is a 15-inch Smart TFT LCD module designed for industrial control systems, instrumentation, medical electronics, power equipment, and embedded applications.

Featuring a 1024 × 768 resolution and 65K colors (16-bit), this display provides a large viewing area for graphical interfaces, system monitoring, and equipment control. It incorporates a capacitive touchscreen (CTP), allowing users to interact directly with on-screen menus, buttons, and other graphical elements.

The module integrates an onboard 32-bit MCU and graphics engine, reducing the processing workload required from an external host controller. It supports TOPWAY SGTools for designing and preloading graphical user interfaces, allowing the display to execute predefined interface operations independently while exchanging real-time data with a host controller.

A key feature of the HMT150ATA-D is its combination of three interfaces:

• HDMI: Accepts HDMI video signals at 1024 × 768 resolution and 60Hz.
• RS232-C: Supports serial communication with an external host controller.
• USB: Supports downloading TML files and image resources, as well as the capacitive touchscreen connection.

Additional features include 256MB Flash memory, a Lua script engine, RTC functionality, a built-in buzzer, 90-degree screen rotation, and an anti-glare (AG) surface treatment.

With its large 15-inch screen, integrated processing capabilities, and multiple connectivity options, the HMT150ATA-D is suitable for industrial applications requiring a versatile graphical display and touchscreen interface.

Specifications

Technical Information

1. Display and Capacitive Touchscreen

The HMT150ATA-D features a 15-inch TFT LCD panel with 1024 × 768 resolution and 65K colors.

The capacitive touchscreen supports direct interaction with the graphical interface. The AG surface treatment helps reduce reflections from ambient lighting.

2. HDMI Video Interface

The HMT150ATA-D provides an HDMI signal terminal (K19) for connecting an HDMI video source.

• HDMI video input.
• Supported resolution: 1024 × 768 pixels.
• Refresh rate: 60Hz.
• Dedicated HDMI signal connector.

This interface allows the module to receive video from compatible HDMI equipment, providing an alternative to displaying graphics generated through the onboard Smart LCD interface.

Important: The HDMI connection is a video input. The datasheet identifies the terminal as an HDMI receiver and specifies 1024 × 768 @ 60Hz. It should not be described as an HDMI output.

3. Integrated MCU and Graphics Engine

The module incorporates an onboard 32-bit MCU and an integrated display function controller with a graphics engine.

This architecture allows the display to manage graphical operations and execute predefined interface functions internally, reducing the processing requirements of an external host controller.

The controller supports:

• Graphical interface execution.
• Display page control.
• Touch panel interaction.
• Real-time variable updates.
• Host commands and responses.
• Reporting touch-key information to the host.

4. TOPWAY SGTools and Graphical Interface Development

The HMT150ATA-D supports TOPWAY SGTools for designing and preparing graphical user interfaces.

The general development process involves:

1. Install the TOPWAY Graphics Editor.
2. Import pictures and design the user interface flow.
3. Download the project to the Smart LCD using a USB drive.
4. Power on the module to execute the preloaded interface.
5. Connect an external host controller to exchange real-time application data.

TML files, picture files, and icon files are stored in the module's internal Flash memory. The preloaded interface controls the display flow and touch responses, while the host controller can update variables and access custom memory through the serial interface.

5. RS232-C Communication Interface

The module provides an RS232-C interface through connector K1 for communication with an external host controller.

The default serial communication configuration is:

• Baud rate: 115200 bps.
• Data format: 8N1.
• Electrical standard: RS232-C.

Hardware handshaking is recommended by the manufacturer.

Important: The serial interface uses RS232-C electrical signal levels, not standard 3.3V or 5V TTL UART signals. An appropriate RS232-to-TTL converter is required when connecting the display to microcontrollers such as Arduino or ESP32.

6. USB Interface and Project Download

The module provides a USB interface through connector K20.

The USB connector includes:

According to the datasheet, the USB interface supports:

• Preloading TML graphical interface files.
• Preloading picture files.
• Capacitive touchscreen connection.

The USB interface is used for project and resource transfer. It should not be assumed to provide general-purpose USB host functionality for arbitrary peripherals.

7. Internal Memory and Data Handling

The HMT150ATA-D includes 256MB of internal Flash memory for graphical resources and application data.

The module supports:

• Storage of TML graphical interface files.
• Storage of picture and icon files.
• Custom Flash memory access through the host interface.
• Real-time variable access through the serial interface.
• Host-controlled display updates.
• Touch-key response reporting.

The display can execute its preloaded graphical interface independently, while an external host controller handles application data and real-time system communication.

8. Lua Script Engine, RTC and Buzzer

The HMT150ATA-D includes additional functions for embedded interface development:

• Lua Script Engine: Supports Lua scripting functionality within the module.
• RTC: Provides real-time clock functionality. The manual specifies RTC without a battery.
• Buzzer: Supports buzzer operation and touch sound control.
• 90-Degree Rotation: Supports 90-degree screen rotation.

These functions are useful when developing graphical interfaces with additional control and interaction requirements.

Optical Characteristics

Viewing-angle specifications are based on a contrast ratio of CR ≥ 10. The manufacturer also specifies different viewing-direction characteristics at 6H and 12H depending on the displayed content.

Electrical Characteristics

The module should be operated within its specified voltage range. The typical current is specified under normal display conditions at 12V DC and 25°C.

Features

• 15-Inch TFT Display: Large screen with 1024 × 768 resolution.
• Capacitive Touchscreen: Supports interactive touch-based operation.
• 65K Colors: 16-bit color display.
• HDMI Video Input: Supports HDMI video at 1024 × 768 @ 60Hz.
• Integrated 32-bit MCU: Handles display operations internally.
• Built-in Graphics Engine: Reduces host-controller processing requirements.
• TOPWAY SGTools Support: Allows graphical interface design and project preparation.
• 256MB Flash Memory: Stores graphical resources and application files.
• RS232-C Interface: Supports serial communication with an external host controller.
• USB Interface: Supports project downloads and touchscreen connection.
• Lua Script Engine: Provides scripting functionality.
• RTC Functionality: Supports real-time clock operations.
• Built-in Buzzer: Supports audible feedback and touch sounds.
• 90-Degree Rotation: Supports screen orientation changes.
• Anti-Glare Surface: AG treatment helps reduce reflections.
• Wide Operating Temperature: Supports operation from -20°C to +70°C.

Applications

• Industrial control panels.
• Machine monitoring and control systems.
• Industrial instrumentation.
• Medical electronic equipment.
• Power electronics equipment.
• Automation systems.
• Embedded system user interfaces.
• Smart control terminals.
• Measurement and testing equipment.
• HDMI-based display applications.
• Custom touchscreen interfaces for electronic products.

Frequently Asked Questions (FAQ)

1. What is the TOPWAY HMT150ATA-D?

The HMT150ATA-D is a 15-inch Smart TFT LCD module with a 1024 × 768 resolution, capacitive touchscreen, integrated 32-bit MCU, and HDMI, RS232-C, and USB interfaces.

2. What is the display resolution?

It features a resolution of 1024 × 768 pixels and supports 65K colors (16-bit).

3. Does the HMT150ATA-D have a touchscreen?

Yes. It incorporates a capacitive touchscreen (CTP) for direct interaction with graphical menus and interface elements.

4. Does this display support HDMI?

Yes. The module provides an HDMI video input supporting 1024 × 768 resolution at 60Hz.

5. Can I connect the HMT150ATA-D directly to an Arduino or ESP32?

Not directly through a standard TTL UART connection. The module uses RS232-C electrical signal levels. An appropriate RS232-to-TTL converter is required when interfacing with Arduino, ESP32, or other TTL-based microcontrollers.

6. Can the display operate without an external controller?

Yes. The module can execute its preloaded graphical interface and manage touch responses internally. An external host controller is used when the application requires real-time data exchange or additional control.

7. What is the operating voltage of the HMT150ATA-D?

The specified operating voltage range is 11.5–12.5V DC, with a typical supply voltage of 12V DC. The typical operating current is 1000mA.

8. What additional functions does this Smart LCD module support?

It supports a Lua script engine, RTC functionality, a built-in buzzer, 256MB Flash memory, and 90-degree screen rotation.

Download

• Datasheet & Software
• LCD Choice & Comparison Guide