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CBoye.1
Associate
April 10, 2022
Question

Can I control a 1bpp, 8 bit parallel ,LCD with LTDC on an STM32H750?

  • April 10, 2022
  • 1 reply
  • 922 views

I have spent a couple hours going through the STM32H750 data sheet and haven't been able to come to a conclusion. The display in question is an el.640.200.sk panel that is 1bpp monochrome with a dual 4 bit parallel interface and takes PCLK, VSYNC, and HSYNC. I am wanting to use the LTDC pared with DMA2D as the display has a high refresh rate of 240hz.

So far I have looked at using CLUT with L8 format and leaving pins floating on the 16 bit RGB outputs but it is a huge waste of memory space and gpio pins. Is there a way to configure the LTDC output to 8 bit parallel with the 3 clock/sync signals?

Any help is appreciated.

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1 reply

MM..1
Chief III
April 10, 2022

LTDC is for 16/24 RGB.

Your LCD maybe can use FMC/FSMC

CBoye.1
CBoye.1Author
Associate
April 10, 2022

That looks promising, cheers. Also, any idea if the graphics library works with it?