0.91" IIC I2C Serial SPI OLED LCD Display 128x32 3.3V/5V AVR PIC STM32 Arduino Features: Driver IC: SSD1306 Size: 0.91 inch OLED Resolution: 128 x 32 Font Color: white Voltage: DC 3.3-5V PIN Interface: IIC or SPI optional OLED display, no need backlight, self-illumination, the display performance is better than the traditional LCD display, also lower consumption. IIC Pin definition: GND: Power Ground. VCC: Power + (DC 3.3 ~5v). SCL: Clock Line. SDA: Data Line. SPI Pin definition: GND: Power ground VCC: Power CLK: Clock line MOSI: Data cable RES: Reset line DC: Data/commands CS: Chip select (when not use can be grounded directly) Packaged included: 1* 0.91? OLED LCD Display Module