DFRobot Fermion 1.8" 128×160 IPS TFT LCD Display Module with MicroSD Slot & GDI Cable

The module uses a 4-wire SPI (Serial Peripheral Interface) protocol for communication with the host microcontroller. This includes SCLK (clock), MOSI (data in), CS (chip select), and DC (data/command) lines, along with separate pins for power (VCC, GND) and backlight control. The SPI interface allows for fast data transfer and is widely supported by platforms like Arduino, ESP32, and Raspberry Pi.

The onboard MicroSD card slot is connected to the display controller and can be accessed via the SPI bus. You can store bitmap (.bmp) image files on a FAT16 or FAT32 formatted SD card. The library provided for the ST7735S driver typically includes functions to read these files and display them directly on the screen, offloading graphic storage from the microcontroller's limited memory.

The included GDI (General Display Interface) FPC cable is designed for plug-and-play connection to DFRobot's FireBeetle series main controllers, simplifying wiring. If you are not using a FireBeetle board, you can ignore the GDI port and connect the module using the standard 10-pin header, following the standard SPI pinout (VCC, GND, SCLK, MOSI, CS, DC, RST, BL) for your specific microcontroller.

The module is designed to operate from a supply voltage (VCC) of 3.3V to 5V DC. The logic levels on the SPI communication pins (SCLK, MOSI, CS, DC) are compatible with the supplied VCC. When powering with 5V, the logic high will be ~5V. For safe operation with a 3.3V logic microcontroller (like ESP32), ensure your setup is level-shifted or that the microcontroller's pins are 5V tolerant.