Module Introduction
1.28-inch circular TFT display module with built-in GC9A01 driver chip, using SPI interface communication, with a resolution of 240x240,65K color display, allowing the screen to display color images clearly

Parameter Introduction
Screen type: IPS
Working voltage: 3.3/5V
Communication interface: 4-wire SPI
Resolution: 240x240
Pixel size: 0 135x0. 135mm
Display area: 32.4mm in the middle
Driver chip: GC9A01
Working current:
20ma (typical)
Interface model: PH2.0-8P/FPCO. 5-8P
Equipped with a PH2.0 DuPont female wire
Positioning method: M3 screw (fixed to copper pillar)
Module weight: 24g
Module size: 36 40 9.4mm

GND: Negative power supply, ground
VCC: 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

Precautions
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 has been found that for arduino cannot work when using 3.3V power supply for 5V level communication, while ESP323 and ESP323 have no abnormalities when using 5V and 3.3V power supply for 3V level communication.

The screw used to fix the copper pillar is M3 screw. It should be noted that since the copper pillar is a through-hole and the bottom of the screen is a metal shell, the user's screw should not exceed 6mm when screwing into the copper pillar, otherwise it will cause the screen to tilt or the edge to crack.