This OLED display has white pixels on a black background. The display communicates over SPI / I2C and can be powered with 3.3V. OLED (Organic Light-Emitting Diode) means that the screen consists of all small LEDs (each pixel equals 1 LED). As a result, the display does not require a backlight and is much more economical to use. In addition, this gives a much higher contrast, making this display very clear and legible despite its size. Specifications * Control chip: SSD1306 * Display area: 21.744 x 10864mm * Physical size: 27.3 x 27.8mm * Interface type: by Default 7-wire SPI * Switchable rear resistor to use 3-wire SPI, IIC interfaces * Number of pins: 7 * Display color: White * Working temperature: -40 -70°C Interface * GND (Power ground) * VCC (Power 3.3V - 5V) * D0 (SPI clock line for SPI interface and IIC clock line for IIC interface) * D1 (SPI data line for SPI interface and IIC data line for IIC interface) * RES (OLED reset, OLED needs to be reset once after power-on) * DC (SPI data/command selection pin, used to set IIC address when IIC interface) * CS (OLED SPI chip select, active low, if you do not want to use must be grounded) Connection * Method 1: MCU hardware SPI connection method: If there is only one device on the SPI bus, you can directly ground the CS of the OLED screen, which saves an IO. * Method 2: MCU IO analog SPI connection mode: If there is only one device on the SPI bus, you can directly ground the CS of the OLED screen, which saves an IO. * Method 3: MCU analog IIC connection method: IIC address: DC is low = 0x78 DC is high = 0x7A * Method 4: MCU hardware IIC connection method: IIC address: DC is low = 0x78 DC is high = 0x7A https://elecena.pl/product/27738369/opencircuit-oled-display-128-x-64-spi-white 2025-01-22 https://elecena.pl/product/27738369/opencircuit-oled-display-128-x-64-spi-white 2025-04-17 https://elecena.pl/product/27738369/opencircuit-oled-display-128-x-64-spi-white 2025-04-19 https://elecena.pl/product/27738369/opencircuit-oled-display-128-x-64-spi-white 2025-04-20 https://elecena.pl/product/27738369/opencircuit-oled-display-128-x-64-spi-white 2025-07-18 https://elecena.pl/product/27738369/opencircuit-oled-display-128-x-64-spi-white 2025-07-19 https://elecena.pl/product/27738369/opencircuit-oled-display-128-x-64-spi-white 2025-11-06 https://elecena.pl/product/27738369/opencircuit-oled-display-128-x-64-spi-white 2026-01-05 https://elecena.pl/product/27738369/opencircuit-oled-display-128-x-64-spi-white 2026-01-08 https://elecena.pl/product/27738369/opencircuit-oled-display-128-x-64-spi-white 2026-02-23 https://elecena.pl/product/27738369/opencircuit-oled-display-128-x-64-spi-white 2026-02-28 https://elecena.pl/product/27738369/opencircuit-oled-display-128-x-64-spi-white 2026-04-14