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What Is the ST7735? Color TFT Display Controller and Uses

October 25, 2026 4 min read
Quick answer

The ST7735 is a display controller that drives small color TFT LCD screens. It is found in the most common 1.8" 128×160 (65K color) modules and connects over SPI (VCC/GND/SCK/SDA/RES/DC/CS/BLK, 3.3 V). Unlike the SSD1306 it is color; it is driven with Adafruit ST7735/TFT_eSPI.

The ST7735 is a display controller that drives small color TFT LCD screens. It is found in the most common 1.8" 128×160 (65K color) modules and connects to an MCU over SPI. For the concept, see what is a TFT display.

What is the ST7735 used for?

A small, colorful graphic interface: menus, dashboards, small images and graphics. Unlike the SSD1306 OLED it is color; unlike the HD44780 it can draw graphics. It is driven with the Adafruit ST7735 / TFT_eSPI libraries on Arduino.

Connection (SPI)

Typical pins: VCC, GND, SCK, SDA(MOSI), RES, DC, CS, BLK (backlight). 3.3 V logic; on 5 V boards a level shifter is recommended.

Specifications

ParameterValue
TypeColor TFT LCD controller
Resolution128×160 (65K color)
InterfaceSPI
Supply3.3 V (module may have a regulator)

Equivalents

  • ST7789: a higher-resolution (240×240) TFT.
  • ILI9341: 240×320, a larger screen.
  • SSD1306: a monochrome OLED.

Find it in our catalog

Use the ST7735 search.

Frequently Asked Questions

What is the ST7735?+
The ST7735 is a display controller that drives small color TFT LCD screens. It is found in the most common 1.8" 128×160 (65K color) modules and connects over SPI.
How is the ST7735 wired?+
Over SPI: VCC, GND, SCK, SDA(MOSI), RES, DC, CS, BLK. 3.3 V logic; on a 5 V board a level shifter is recommended. It is driven with the Adafruit ST7735/TFT_eSPI libraries.
What is the difference between the ST7735 and the SSD1306?+
The ST7735 is a color TFT (graphics/images); the SSD1306 is a monochrome OLED. Use the ST7735 for a color interface, the SSD1306 for low power/simple text.
What is an equivalent to the ST7735?+
The higher-resolution ST7789 (240×240); the larger ILI9341 (240×320); the monochrome SSD1306.