Features: Support for single chip microcomputer straight plug, without any wiring. The integrated voltage regulator IC, supports 5V or 3.3V power supply. On-board level translation programs truly perfectly compatible 5V / 3.3V IO level, supports a variety of single-chip IO connection. The integrated backlight control circuit, can be controlled on-off or PWM dimming. The integrated SD card expansion circuit, reserved Serial Peripheral Interface FLASH font circuits to facilitate the expansion application. Specifications: Screen size:: 2.2 inch Resolution: 176 * 220 Driver IC: ILI9225 Size: 7 * 4.5cm / 2.76 * 1.77in Weight: 22g Package included: 1 x LCD Display Module 1、Support for single chip microcomputer straight plug, without any wiring 2、The integrated voltage regulator IC, supports 5V or 3.3V power supply. 3、On-board level translation programs truly perfectly compatible 5V / 3.3V IO level, supports a variety of single-chip IO connection. 4、The integrated backlight control circuit, can be controlled on-off or PWM dimming. 5、The integrated SD card expansion circuit, reserved Serial Peripheral Interface FLASH font circuits to facilitate the expansion application.