The 1.28-inch circular touch TFT display module is equipped with a built-in GC9A01 driver chip, which uses SPI interface communication. Its resolution reaches 240x240, and the 65K color display color allows the screen to display color images clearly. The touch function can be driven using the CST816D dedicated capacitive touch chip and IIC.
Screen type: IPS
Working voltage: 3.3/5V
Communication interface: 4-wire SPI
Resolution: 240x240
Display area: 32.4mm in the middle
Driver chip: GC9A01
Working current: 20ma (typical)
Interface model: mx1 25-8P + mx1. 25-4P； Equipped with an mx1.25-8P and mx1.25-4P to DuPont female wire
Positioning method: M2 screw (fixed to copper pillar)
Module weight: 17.2g
Module size: 42.1 * 43 * 11 5mm

GND: Negative power supply, ground
VIN: Positive power supply, 3.3-5V, needs to be consistent with the communication level
SCL: SPI clock signal input port
SDA: SPI data input port
RES: Reset, low level enable
DC: Data/Command Selection, Low Level Command, High Level Data
CS: Chip selection, low-level enable
BLK: Backlight, suspended to ground off, default pull-up to 3 3V
TP_SCL: Touch Function IIC Communication Clock Port
TP_SDA: Touch Function IIC Communication Data Port
TP-RST: Touch reset pin, low level valid
TP-INT: Touch interrupt pin, output high level

matters needing attention
The module is compatible with 3.3V and 5V power supply, and is equipped with a level conversion chip on the board. However, it should be clarified that the user communication level and power supply voltage need to be consistent. After testing, it was found that using 3.3V power supply for Arduino 5V level communication will not work, while ESP323.3V level communication using 5V and 3.3V power supply tests showed no abnormalities. The height of the M2 copper pillar is 4.5mm, so the screw you are using cannot exceed this height.