A while ago I purchased some FGD280E3725 TFT LCD Touch displays at eCyberspaces, see 2.8 inch 37P TFT LCD Screen ST7781R TP I received the connector pinout but did not know if the display had a 16 or 8-bit databus width. The ST7781R uses Interface Mode Select bits to set the interface type. Since the display has either an 8-bit or 16-bit interface I assume that pin IM0 is wired to the FPC. The display has an FPC type FPC2803725 0r FPC2803715 depending on the display. This FPC contains two resistors R1 and R2. Only one Resistor is populated. R1 is connected to VCCI and R2 to Ground. So currently my device is set to a 16-bit bus width since R2 is populated so IM0=0. I’ll remove R2 and place R1 and then I assume the Interface Width is set to 8-bit. I’ll test this when my test PCB arrives.