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Abin
Abin
Associate III
August 2, 2023
Question

Showing clock incompatibility while selecting USB_OTG_FS in STM32F205VE

  • August 2, 2023
  • 5 replies
  • 1792 views

Hai ,

I enabled USB_OTG_HS in STM32F205VE and default frequency as 15 MHz. At this situation , It is showing the Error in the clock configuration and when we select the option "Resolve clock issue Automatically" then the Clock becomes 120 MHz. Don't this protocol work in lower frequency?

In addition to that , I need to use SPI and FSMC in the same controller. Whether any issue will arise in future? Can anybody help me?

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    5 replies

    TDK
    TDK
    August 2, 2023

    USB requires a reliable 48 MHz clock. You can typically use a PLL to generate this from common crystal frequencies.

    Using SPI, FSMC and USB together poses no issues. SPI and FSMC clocks do not need to be exact unlike the USB.

    "If you feel a post has answered your question, please click ""Accept as Solution""."
      Abin
      AbinAuthor
      Associate III
      August 3, 2023

      Thank You So Much for your reply! I will check this.

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