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Visitor II
November 12, 2025
Solved

stm32H7 LTDC confusion

  • November 12, 2025
  • 1 reply
  • 153 views

Hello, I want to use LTDC on the STM32H743VIT6 microcontroller, but when I enable this peripheral in CUBEMX, it does not activate correctly. For example, the pins for B are from B3-B7, while they should be from B0-B4, and the same goes for R, G.

HOSI_0-1762926289188.png

 

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    Best answer by Issamos

    Hello @HOSI 

    I’m not an LTDC expert. But, think this is normal and no problem with this configuration according to the figure 32 of the AN4861, on a RGB666 display, the B  pins should be from B2 to B7 and not from B0 to B5 as on the display side. Same for G and R pins:

    Issamos_0-1762934863382.png

    Best Regards.

    II

    1 reply

    IssamosAnswer
    Graduate II
    November 12, 2025

    Hello @HOSI 

    I’m not an LTDC expert. But, think this is normal and no problem with this configuration according to the figure 32 of the AN4861, on a RGB666 display, the B  pins should be from B2 to B7 and not from B0 to B5 as on the display side. Same for G and R pins:

    Issamos_0-1762934863382.png

    Best Regards.

    II