4.0″ High-Brightness UART HMI Display for Embedded Control
The ND040SSG480480-A01 is a compact 4.0-inch UART HMI touch display designed for embedded control, industrial interfaces, smart equipment, and interactive display applications. It combines a 480×480 IPS TFT display, 1000 cd/m² brightness, capacitive touch, an LT7689 HMI controller, and TTL UART or RS-232 communication options in a compact open-frame module. RS-485 communication can be added based on project requirements.
4.0″ UART HMI Touch Display Technical Specifications
| Model | ND040SSG480480-A01 |
|---|---|
| Display | 4.0″ IPS TFT, 480 × 480 |
| Brightness | 1000 cd/m² |
| Touch | Capacitive Touchscreen |
| Touch Controller | GT911 |
| HMI Controller | LT7689 |
| Communication Protocol | UART Serial Protocol |
| Interface Options | TTL UART or RS-232 |
| Optional Interface | RS-485 expansion |
| Power Input | 5 V DC |
| USB Type-C | Power Input |
| Communication Connector | 6-Pin Connector |
| Audio | Speaker Output |
| RTC | External Battery Connector |
| Overall Dimensions | 77.0 × 80.0 × 15.31 mm |
| Active Area | 72.56 × 70.88 mm |
| Mounting | Open-Frame / Embedded Integration |
| Operating Temperature | −30°C to +70°C |
Display Drawing
Interface Definition
Confirm the selected TTL UART, RS-232, or optional RS-485 hardware configuration before wiring.
| ①Communication port: CON1:Molex:53261-0671 | ||||||
|---|---|---|---|---|---|---|
| NO. | SYMBOL | DISCRIPTION | I/O | |||
| 1 | 5V | Power supply. | P | |||
| 2 | GND | Ground. | P | |||
| 3 | 232_TXD | RS-232 driver output. | O | |||
| 4 | 232_RXD | RS-232 receiver input. | I | |||
| 5 | BUSY | No function. | / | |||
| 6 | GND | Ground. | P | |||
| ②Speaker port: CON2:Molex:533980271 | ||||||
| NO. | SYMBOL | DISCRIPTION | I/O | |||
| 1 | SPK+ | Speaker positive. | O | |||
| 2 | SPK- | Speaker cathode. | 0 | |||
| ③RTC battery port: CON3:Molex:533980271 | ||||||
| NO. | SYMBOL | DISCRIPTION | I/O | |||
| 1 | BAT+ | Battery positive. | P | |||
| 2 | GND | Battery cathode. | P | |||
| ④Type C conne ctor only for power supply. | ||||||
Customization Options
Hardware Customization
Optional customization includes display brightness, touch solution, PCBA functions, connector layout, power input, speaker output, RTC functions, and mechanical structure.
Interface Customization
Available communication options include TTL UART and RS-232. RS-485, CAN, or other interfaces may be developed based on project requirements and technical evaluation.
Software & UI Customization
Optional services include GUI development, communication protocol customization, multilingual fonts, boot screens, icons, themes, and application-specific interface design.
Environmental Customization
Optional enhancements may include optical bonding, customized cover glass or enclosures, EMC improvements, and upgraded environmental protection. Final specifications are subject to engineering evaluation.
