1. Introduction
This manual provides essential information for the proper use, installation, and maintenance of the 2.1 Inch Round TFT LCD Display Module with GC9B72 Driver IC. This module features a 360x360 pixel circular color screen and uses a 4-wire SPI interface, making it suitable for various embedded applications, including those with Arduino platforms.
Figure 1: Front view of the 2.1 Inch Round TFT LCD Display Module
2. Safety & Warnings
Important Safety Information:
This component is intended for use by qualified engineers or technicians. Improper handling or integration may result in product failure, electric shock, or fire hazard.
- Warning: Keep away from children and non-professional users.
- Do not use if the component shows visible damage, such as cracks, deformities, or leakage.
- Avoid exposure to moisture, water, or extreme temperatures. Store in a dry, static-safe environment.
- Handle with care to prevent electrostatic discharge (ESD). Use appropriate ESD protection during installation.
- Do not exceed the specified electrical ratings (voltage, current, temperature, etc.) provided in the datasheet.
- Install and operate only in accordance with the provided technical documentation and applicable standards.
- If integrated into a final product, ensure the end device complies with all relevant safety regulations for the target market.
3. Specifications
Figure 2: Product Information and Specifications
| Parameter | Value |
|---|---|
| Product Name | 2.1-inch TFT LCD screen |
| Model Number | 360x360 |
| Type | TFT |
| Pixel Array / Resolution | 360x360 |
| Interface | 4-wire SPI |
| Display Color | Full color |
| Supply Voltage (V) | 3.3~5 |
| Operating Temperature (°C) | -20~70 |
| Storage Temperature (°C) | -30~80 |
| Driver IC | GC9B72 |
| Outline Dimensions (mm) | 59.24 × 67.47 × 3.51 |
| Display Size (mm) | 52.91 × 52.91 |
| High-concerned chemical | None |
| Customization | Yes |
| Origin | Mainland China |
| Package Weight | 0.01 kg |
| Package Dimensions (L x W x H) | 12 cm x 13 cm x 1 cm |
4. Setup & Installation
4.1. Installation & Integration Guidelines
- Before First Use: Verify compatibility with your target circuit by consulting the product datasheet.
- Handling: Use anti-static wrist straps and mats to prevent Electrostatic Discharge (ESD) damage.
- Mounting/Soldering: Follow recommended soldering profiles and mechanical mounting instructions specific to your application.
- Testing: After integration, perform appropriate electrical and functional tests to ensure correct operation.
- Detailed Specifications: For detailed electrical and mechanical specifications, refer to the product datasheet.
4.2. Pinout Diagram
The module features a 10-pin interface. Refer to the diagram and table below for pin assignments and functions.
Figure 3: Pinout Diagram
| PIN No. | Symbol | Function |
|---|---|---|
| 1 | GND | Power Ground |
| 2 | VCC | Power Positive (3.3V-5V) |
| 3 | SCL | Serial Clock |
| 4 | SDA | Serial Data Input |
| 5 | RST | LCD Reset Pin |
| 6 | DC | Data / Command Select Pin |
| 7 | CS | Chip Select Signal |
| 8 | BL | Backlight Control |
| 9 | SDO | Serial Data Output |
| 10 | TE | Tearing Effect Sync Signal |
4.3. Mechanical Dimensions
For precise integration, refer to the foot position chart detailing the module's dimensions.
Figure 4: Foot Position Chart
5. Operating the Display Module
This 2.1-inch round TFT LCD display module is designed to be controlled via a 4-wire SPI interface. Once properly connected to a microcontroller (e.g., Arduino) and powered within the specified voltage range (3.3V-5V), it can display full-color graphics and text. Programming involves sending commands and data via the SPI bus to the GC9B72 driver IC to control pixel illumination and display content.
Refer to the manufacturer's datasheet and example code (if available) for specific programming instructions and initialization sequences.
6. Maintenance
- Storage: Keep the module in its original packaging until use. Store it in a dry, static-safe environment to prevent damage from moisture or electrostatic discharge.
- Cleaning: If necessary, gently clean the display surface with a soft, lint-free cloth. Avoid using harsh chemicals or abrasive materials.
- Environmental Conditions: Operate and store the module within the specified temperature and humidity ranges to ensure longevity and optimal performance.
7. Troubleshooting
- No Display/Blank Screen:
- Check all power connections (VCC, GND) to ensure they are correctly supplied within the 3.3V-5V range.
- Verify SPI connections (SCL, SDA, CS, DC, RST) are secure and correctly wired according to the pinout.
- Ensure the backlight (BL) pin is correctly controlled and receiving power if applicable.
- Confirm that the initialization code for the GC9B72 driver IC is correctly implemented and executed.
- Garbled/Incorrect Display:
- Double-check your SPI communication protocol and data format.
- Ensure the correct display resolution (360x360) is configured in your software.
- Verify that the data sent to the display matches the expected format for the GC9B72 driver.
- Module Not Responding:
- Check for any short circuits or damaged components on the module or your circuit board.
- Ensure the RST pin is properly toggled during initialization.
8. User Tips
- Programming Libraries: Many users find it helpful to use existing libraries for the GC9B72 driver IC, especially when working with platforms like Arduino. Search for 'GC9B72 Arduino library' to find community-contributed code and examples that can simplify your development process.
- Datasheet Reference: Always keep the official datasheet for the GC9B72 driver IC and the display module handy. It contains crucial timing diagrams, register maps, and electrical characteristics that are vital for advanced programming and debugging.
9. Warranty & Support
9.1. Manufacturer Information
Manufacturer: Shenzhen Baishun Ming core Electronics Co., LTD
Address: 12H-1, City 100 Building, No.4 Zhonghang Road, Huahang Community, Huaqiang North Street, Futian District, Shenzhen, Guangdong Province, China, 518000
Contact: +86-13610198138, chenjq1902@163.com
9.2. Compliance Information
For Electrical/Electronic Components:
- This product complies with the applicable requirements of the RoHS Directive (2011/65/EU) regarding the restriction of hazardous substances in electrical and electronic equipment.
- It may also fall under the scope of the REACH Regulation (EC) No 1907/2006 concerning the registration, evaluation, authorization, and restriction of chemicals.
- If applicable, the product meets the Low Voltage Directive (2014/35/EU) and/or the Electromagnetic Compatibility Directive (2014/30/EU), and carries the CE marking where required.
NOTE:
This product is intended for integration into end-use devices by qualified personnel. The final product in which this component is used must comply with all applicable safety and regulatory requirements in the target market.
9.3. Additional Resources
A detailed user manual in PDF format is available for download. This document contains comprehensive technical details and may include further instructions and specifications. You can access it via the following link: User Manual (PDF)