STM32L4R7AI display resulotion support - where can i find it for the LCd-TFT?

[Imen.D]

Hello,

Have you looked at the product Datasheet , in the "LCD-TFT controller (LTDC) characteristics"  section (Table 123. LTDC characteristics)

You have also the AN4861 "LCD-TFT display controller (LTDC) on STM32 MCUs", for more clarification.

You can review the LTDC example with STM32L4R9I-EVAL board (under STM32CubeL4 package) uses LTDC, so it's the perfect example for you to start with:

\STM32Cube_FW_L4_V1.17.0\Projects\STM32L4R9I-EVAL\Examples\LTDC

Hope that helped you!

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Imen

[Tbear.1]

Thank you Imen

yes on both reading material,

however i was looking for something concreate if it does or doesnot support 320x480

and this does not appear in the app notes or the data sheet

i am planning to Use the RGB interface and the MIPI is what exists on the STM32L4R9I-EVAL board, which uses a 390x390 display

so i am stiil not sure this helps me,

is there a place where it is stipulates if it does or does not support this?

thanks

Tzachi

[MM..1]

Your question isnt good defined, in teory you can support 10000x10000 or any number when display used have own framebuffer and you dont need x frames per second.

When you ask does it support 30Hz ... calculation for MCU RAM/CLK/BUS/BPP can aproximate yes or not.

[Hbfdb.1]

Your question isn't always true defined, in idea you could guide 10000x10000 or any range here when display used have own framebuffer and also you do not need x frames in step with 2d.

[Imen.D]

Hi @Tbear.1​ ,

Sorry for my delayed answer.

You mainly need to check the pixel clock of the display to use it, you should match the Table 14. STM32L4+ maximal supported pixel clock (in the AN4861).

And also the used memory bandwidth since it is the main bottleneck of GFX perf.

Imen