The 1.28-inch 240x240 resolution circular SPI interface full-color/IPS LCD display is a small-size display designed for compact devices. It not only has high resolution and wide viewing angles, but also is suitable for specific application scenarios due to its circular design. Here are some key information and technical details about this display:
Technical Specifications
Screen Size: With a diameter of 1.28 inches (about 32.5 mm), this circular screen is ideal for wearable devices or other products that require a unique form factor design.
Resolution: 240x240 pixels provide clear text and image display, especially suitable for menu navigation, icons, and small-scale graphic content.
Interface Type: SPI (Serial Peripheral Interface) is a synchronous serial communication protocol that allows efficient data transfer between microcontrollers and peripheral devices. For developers, this means easier integration into existing systems and data exchange can be achieved with fewer pins.
Display Technology: IPS (In-Plane Switching) screen technology ensures a wide viewing angle and excellent color reproduction, allowing for a good visual experience when viewed from different angles. In addition, IPS panels generally have better contrast and brightness characteristics.
Color Depth: If it is a "full color" screen, it supports at least 65K colors (16-bit color depth), which can display rich colors for vivid and realistic images.
Display Features
Built-in driver chip: Most of these displays are equipped with a dedicated LCD driver chip, such as GC9A01, which simplifies hardware design and reduces the need for external components.
Backlight control: With LED backlight, users can adjust the brightness according to ambient lighting conditions to optimize visibility and power consumption.
Touch function (optional): Some models may also integrate capacitive or resistive touch screens, increasing the possibility of user interaction and improving the user experience.
Application Areas
This type of display is widely used in many fields, including but not limited to:
Smart watches and other wearable devices
Small medical instruments
Internet of Things (IoT) devices
Home automation control panels
Portable payment terminals such as mobile POS machines
Development Considerations
Power Management: Considering the issues of portability and battery life, an effective power management system is essential to extend the working time of the device.
Development tools and support: It is very important to choose products with good documentation and technical support. Sample code, library functions, and development boards provided by the manufacturer can help speed up the development process.
Graphics library: To simplify the development process, you can use existing graphics libraries (such as LVGL, uGFX, etc.), which provide functions such as drawing lines, rectangles, texts, and even support more complex GUI elements.
Physical connection: Make sure that the main control board has enough pins to connect the SPI interface, and pay attention to the impact of signal line length on signal integrity. For example, the module size is about 35.6 (H) x 38.1 (V) x 1.5 Max (D) mm, and the specific size should refer to the product manual to ensure correct installation.
