Introduction
This manual provides detailed instructions for the SURENOO 4.3-5.0 inch 800x480 LT7381 MCU Parallel TFT IPS LCD Module. It covers various configurations including modules without touch panels (NTP), with resistive touch panels (RTP), with capacitive touch panels (CTP), and with larger capacitive touch panels (LTP). Please read this manual carefully before using the module to ensure proper functionality and longevity.
Product Variants
The LT7381 MCU Parallel TFT LCD Module is available in several configurations:
- SMC0500C-800480-NTP-IPS: 5.0" 800*480 MCU Parallel TFT LCD Module Without Touch Panel (IPS Display).
Figure 2: 5.0" 800*480 NTP-IPS Module (Outline Size: 120.04mm x 78.96mm). - SMC0500C-800480-RTP-IPS: 5.0" 800*480 MCU Parallel TFT LCD Module with Resistive Touch Panel (IPS Display).
Figure 3: 5.0" 800*480 RTP-IPS Module (Outline Size: 120.7mm x 75.8mm). - SMC0500C-800480-CTP-IPS: 5.0" 800*480 MCU Parallel TFT LCD Module with Capacitive Touch Panel (IPS Display).
Figure 4: 5.0" 800*480 CTP-IPS Module (Outline Size: 120.7mm x 75.8mm). - SMC0500C-800480-LTP-IPS: 5.0" 800*480 MCU Parallel TFT LCD Module with Larger Capacitive Touch Panel (IPS Display).
Figure 5: 5.0" 800*480 LTP-IPS Module (Outline Size: 129.28mm x 86.08mm). - SMC0430C-800480-NTP-IPS: 4.3" 800*480 MCU Parallel TFT LCD Module Without Touch Panel (IPS Display).
Figure 6: 4.3" 800*480 NTP-IPS Module. - SMC0430C-800480-RTP-IPS: 4.3" 800*480 MCU Parallel TFT LCD Module with Resistive Touch Panel (IPS Display).
Figure 7: 4.3" 800*480 RTP-IPS Module. - SMC0430C-800480-CTP-IPS: 4.3" 800*480 MCU Parallel TFT LCD Module with Capacitive Touch Panel (IPS Display).
Figure 8: 4.3" 800*480 CTP-IPS Module. - SMC0430C-800480-LTP-IPS: 4.3" 800*480 MCU Parallel TFT LCD Module with Larger Capacitive Touch Panel (IPS Display).
Figure 9: 4.3" 800*480 LTP-IPS Module.
Specifications
| Feature | Description |
|---|---|
| Brand Name | SURENOO |
| Display Size | 4.3-5.0 inches |
| Resolution | 800x480 pixels |
| Controller | LT7381 |
| Interface | MCU Parallel |
| Display Type | IPS TFT LCD |
| Touch Panel Options | No Touch (NTP), Resistive Touch (RTP), Capacitive Touch (CTP), Larger Capacitive Touch (LTP) |
| Display Mode | NC (Normally Black) |
| Customization | Yes |
Setup and Connection
Interface Pinout
The module utilizes a 40P/0.5 connector for its main interface. An optional 2*17P/2.54 pin header is also available, often used with a PCB adapter.
40P/0.5 Connector Pinout
This diagram details the pin assignments for the 40-pin, 0.5mm pitch connector, including data lines (DB0-DB15), control signals (CS, RS, WR, RD, LCD_RST, BL_CTRL), power (VCC5V), and ground (GND). For touch panel versions, CTP_SDA, CTP_SCL, CTP_INT, and CTP_RST pins are also present.
2*17P/2.54 Pin Header Pinout
This pin header provides an alternative connection method, often used with development boards. It mirrors many of the signals found on the 40P/0.5 connector.
PCB Adapter (MCU 34P to 40P)
A PCB adapter is available to facilitate connection between the 40P/0.5 connector on the display module and development boards that use a 2*17P/2.54 (34-pin) MCU interface, such as Alientek STM32, EmbedFire STM32, or Surenoo GD32 boards.
Connection Example: Alientek STM32 Development Board
The module can be easily integrated with Alientek STM32 development boards using the "MCU 34P to 40P" PCB Adapter. This setup allows for rapid prototyping and development.
Operating Instructions
- Power On: Ensure all connections are secure before applying power. The module typically requires a 5V power supply.
- Initialization: The display controller (LT7381) needs to be initialized by your microcontroller (e.g., STM32) according to its datasheet. This involves setting up display parameters like resolution, refresh rate, and color depth.
- Displaying Graphics: Data can be sent to the display buffer via the MCU parallel interface. Refer to the LT7381 controller datasheet for specific commands and data formats.
- Touch Panel (RTP/CTP/LTP variants):
- Resistive Touch (RTP): Requires an ADC (Analog-to-Digital Converter) to read X and Y coordinates.
- Capacitive Touch (CTP/LTP): Typically uses an I2C or SPI interface to communicate with the touch controller, providing digital X/Y coordinates and touch events.
- Backlight Control: The BL_CTRL pin can be used to control the backlight brightness, often via PWM (Pulse Width Modulation) from your microcontroller.
Maintenance
- Cleaning: Use a soft, lint-free cloth slightly dampened with water or a specialized screen cleaner. Avoid harsh chemicals or abrasive materials.
- Handling: Always handle the module by its edges. Avoid touching the display surface or the exposed PCB components unnecessarily.
- Storage: Store the module in a dry, dust-free environment, away from direct sunlight and extreme temperatures.
- ESD Protection: Always use proper ESD (Electrostatic Discharge) precautions when handling the module to prevent damage to sensitive electronic components.
Troubleshooting
- No Display / Blank Screen:
- Check power supply connections and ensure correct voltage (5V).
- Verify all data and control lines are correctly connected and not loose.
- Ensure the display controller (LT7381) is properly initialized in your software.
- Check backlight control (BL_CTRL pin) to ensure it's enabled.
- Garbled or Incorrect Display:
- Confirm correct data format and timing parameters in your software, matching the LT7381 datasheet.
- Check for loose or incorrect data line connections.
- Ensure the correct display resolution (800x480) is configured.
- Touch Panel Not Responding (RTP/CTP/LTP):
- RTP: Verify ADC readings and calibration.
- CTP/LTP: Check I2C/SPI connections and communication protocol. Ensure the touch controller is initialized.
- Ensure the touch panel's interrupt pin (CTP_INT) is correctly connected and handled by your MCU.
User Tips
- Always refer to the LT7381 controller datasheet for detailed register settings and timing diagrams specific to your application.
- When using the PCB adapter, ensure the pin orientation is correct to avoid damage to the module or development board.
- For optimal performance, consider using shielded cables for longer connections to minimize noise interference.
Warranty and Support
This product is manufactured by SURENOO Display. For technical support, detailed datasheets, or further inquiries, please visit the official SURENOO Display website or contact their customer service. Keep your purchase records for any warranty claims.
