Solved
STM32H5 overview page is displaying false nr of CANFD instances
Dear ST,
The STM32H5 overview page seems to display the wrong number(1) of CANFD controllers for STM32H5E4 in the line comparison table. The datasheet says it's 3, like for all the others in the STM32H5E/F lines.
Also, I couldn't find anything in the errata sheet about non usable CAN instances.

