Maximum baud rate USART protocol used in the STM32U5 bootloader

Hammer1 · ‎2025-08-25

Akkording to AN3155, July 2025: "The highest tested baud rate (BHigh) is 115200."

Have tried with 921600 and that seems to work fine.

Is the recommodation from ST that not use above 115200?

mƎALLEm · ‎2025-08-25

Hello,

I'm checking that internally and get back to you when I have any feedback.

(Internal ticket number 216214)

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