TFT 4 Inch Display with Touch SPI - ST7796 Chipset

This TFT display is 4-inch diagonal with a bright 4 white-LED backlight with a resolution of 480x320. It has way more resolution than a black and white 128x64 display. As a bonus, this display comes with a resistive touchscreen attached to it already, so you can use the stylus on the screen.

To use a 4-inch ST7796 display with Arduino, you'll need a compatible library, as it often supports displays with ILI9488 controllers. Ensure you have this library installed in your Arduino IDE before using the following example code. You can install the ILI9488 library through the Arduino Library Manager.

Quick Spec

• Screen Size: 4.0"
• Type: TFT
• Driver IC: ST7796
• Resolution: 480 x 320 (Pixel)
• Module Interface: 4-wire SPI interface
• Active Area: 48.6 x 64.8mm
• Module Dimensions: 55.68x83.52mm
• Operating Temperature: -20℃ ~ +60℃
• Storage Temperature: -30℃ ~ +70℃
• VCC Power Voltage: 3.3V ~ 5V
• Logic IO port voltage: 3.3V

Pinout

• VCC: 5V/3.3V power input
• GND: Ground
• CS: LCD chip select signal, low level enable
• RESET: LCD reset signal, low level reset
• DC/RS: LCD register / data selection signal, high level: register, low level: data
• SDI (MOSI): SPI bus write data signal
• SCK: SPI bus clock signal
• LED: Backlight control, high level lighting, if not controlled, connect 3.3V always bright
• SDO (MISO): SPI bus read data signal, if you do not need to the read function, you can not connect it
• T_CLK: Touch SPI bus clock signal
• T_CS: Touch screen chip select signal, low level enable
• T_DIN: Touch SPI bus input
• T_DO: Touch SPI bus output
• T_IRQ: Touch screen interrupt signal, low level when touch is detected

Resources

• ST7796 Datasheet
• User Manual
• Linrary (ILI9XXX Library is Compatible with the ST7796)

Shipping List

• 1 x TFT 4 Inch Display with Touch SPI - ST7796 Chipset
• 1 x Stylus