Waveshare OpenH743I

The OpenH743I-C is an STM32 development board with STM32H743IIT6. It comes with a rich expansion interface to support access to various peripheral modules.


This board has very poor signal integrity.



The SDMMC1 interface seems not to work correctly with clock frequencies higher than 20 MHz.


The reset pin on the ULPI port must be connected to the PE2 pin of the MCU. If it’s not connected, ULPI interface may not work correctly without power reset.