GC9D01

TESTED TFT MODULES

(The images may not accurately represent the screen's colors due to the limitations of a low-end camera)

• 160x160 pixels
• 0.71 inch
• 16b RGB565 support
• SDA single uni-directional line
• TFT screen write only
• 5v supply but works on 3.3v supply
• Round TFT glass
• Module specific driver 0
• Note(1)

• 160x50 pixels
• 1.12 inch
• 16b RGB565 support
• SDA single uni-directional line
• TFT screen write only
• 3.3v supply
• Needs pixel offset
• No PCB
• Module specific driver 1
• Note(1)

ER-TFT1.12-1.pdf

• Note(1) - If you came looking for information about this terrible IC driver, because there's practically no information online, took me a while to figure this out, here's what you should know:
• You can't use Memory Access Control (36h) register to rotate displays.
• There's only one reliably working Memory Access Control (36h) setting - 0x10.
• You cannot reliably use window mode to burst multiple pixels.
• You should send only single pixel, repeated 4 times for the rectangle GC9D01 50x160 and 3 times for the round GC9D01 160x160 display, otherwise the pixel will not be displayed, regardless how much you lower the SPI rate, yep.
• Screen rotation is software based, recalculate the single pixel coordinates to implement the orientation rotation.
• Specific, module oriented driver for each from both displays is required.