STM32U575xx USB

joaorego · ‎2025-02-19

Hello,

Does the STM32U575CG/I (48-pin package) support USB communication, or is USB functionality only available on higher pin-count variants?

Thank you.

FBL · ‎2025-02-19

Hi @joaorego

All packages for this family support USB!

575 = STM32U575xx with OTG

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joaorego · ‎2025-02-19

But what about the USB supply voltage? Will it be sourced directly from VDD? Can I still supply VDD with a voltage lower than 3V?

gbm · ‎2025-02-19

USB requires 3.3 V power.

My STM32 stuff on github - compact USB device stack and more: https://github.com/gbm-ii/gbmUSBdevice

FBL · ‎2025-02-19

Hi @joaorego

As explained in the footnote of Table 150. OTG_FS characteristics (continued) in page 304,

USB functionality is ensured down to 2.7V, but some USB electrical characteristics are degraded in 2.7 to 3.0 V range.

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