2025-08-24 8:23 AM
Hi,
I'm working on a design containing a STM32U535. I need to connect it to a SDHC interface (µSDHC connector).
The STM32U5 documentation talks about a SDMMC1_CKIN signal. It is not clear to me if this signal is always required or not. I think the documentation is not clear on this.
I do not use external transceiver and I don't need UHS-1 speed (1.8V mode).
Is there a reference design with a STM32U5 and a (µ)SDHC connector ? I have not been able to find one.
Nicolas