2.5-inch Resolution 240x240 Square Interface MCU/SPI View Direction Full/IPS LCD Display Guide
For 2.5-inch, 240x240 pixel resolution square LCD displays, especially those with MCU or SPI interfaces and IPS panel technology, here are the key information and usage guidelines you need to know. These displays are widely used in portable electronic devices, smart home controllers, and other small electronic products.
1. Product Overview
Size: 2.5 inches diagonal
Resolution: 240x240 pixels (QVGA)
Shape: Square
Interface Type: Supports MCU interface and SPI (Serial Peripheral Interface), providing reliable data transmission8
Display Technology: IPS (In-Plane Switching), providing wider viewing angle and better color performance5
Viewing Angle: Full View, which means that the image quality is maintained at different viewing angles5
2. Main Features
High resolution and small size: Provides clear and delicate picture display in a limited space, especially suitable for small devices that require fine graphics.
Wide viewing angle: IPS technology ensures clear, color-free images, even from the side5
Low power consumption: Designed for battery-powered devices, helps extend battery life9
Easy integration: The SPI interface allows for easy connection to a microcontroller (MCU) or other embedded system, supporting fast data transfer7
Touchscreen options: Some models support capacitive or resistive touchscreens for added interactivity3
It is worth noting that 2.5-inch 240x240 resolution IPS LCD displays are not as common in the market as other sizes, but there are indeed some specific application scenarios, such as customized industrial control panels or special consumer electronics1
In addition, such screens are also suitable for products that require a certain display area while maintaining a compact design.
3. Hardware connection
SPI interface pin definition:
MOSI (Master Out Slave In): data input
MISO (Master In Slave Out): data output (usually not used for LCD)
SCLK (Serial Clock): clock signal
CS (Chip Select): chip select signal
DC (Data/Command): data/command selection
RST (Reset): reset signal
BL (Backlight Control): backlight control (if applicable)
Power supply requirements:
VCC: usually 3.3V, depending on the model8
GND: ground
4. Driver and programming
Initialization settings:
Before you start displaying content, you must initialize the LCD correctly. This usually includes sending a series of configuration instructions to set parameters such as display mode, brightness, etc.
Graphics library support:
Many development boards and microcontroller platforms (such as Arduino, ESP32, STM32, etc.) provide ready-made graphics libraries, such as Adafruit GFX Library or u8g2lib, which simplify drawing operations.
