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I need fastest MCU that can drive GPIO pins but not with timers or DMA, just from source. I need to take fast data from a FPGA device. One of determination is max frequency of toggling pin:I try STM32H562 to toggle pin mode max frequency is around 31...
I use STM32H562 and/or STM32H503 (nucleo board). When try in loop only this line: while (1) {   GPIOB->ODR ^= GPIO_PIN_6;     } The frequency on pin is only 12.5 mhz. I use external quartz 8mhz (and 24mhz on nucleo) I config  to 250mhz (with build...