Hello everyone,
I am working with an STM32H7 device using the DSI host interface and would like some clarification regarding supported display resolutions.
As per the STM32H7 datasheet, it is mentioned that:
“Extended resolutions beyond the DPI standard maximum resolution of 800×480 pixels; the maximum resolution is limited by the available DSI physical link bandwidth.”
Based on this statement, I would like to confirm the following:
Can a 640×480 display be reliably connected to the STM32H7 using the DSI interface?
Are there any practical limitations related to DSI lane count, lane speed, or refresh rate that would prevent using 640×480, even though it is below 800×480?
Has anyone successfully driven a 640×480 display (at 60 Hz or other refresh rates) on STM32H7 using DSI + LTDC?
Is the limitation purely bandwidth-based, or are there additional constraints in the STM32 DSI/LTDC implementation?
Attaching the clock configuration of STM32CubeMX of DSI.
Any insights, calculations, or real-world experience would be greatly appreciated.
Thank you in advance.
Best regards,
Shivani
