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Visitor II
Sep 10, 2025 9:36 AM UTC
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STM32F411VEH6Usuffix

What is the difference between STM32F411VEH6U and STM32F411VEH6? What does the suffix U mean?

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STTwo-32
STTwo-32Best answer
ST Technical Moderator
Sep 10, 2025 9:41 AM UTC

Hello @chenchenchen1122 and welcome to the ST Community

Sorry but i think my first answer was not as clear and complete as it should be. Infact, as mentioned on the paragraph 11.1 of the UM2569:

  • Some boards feature a specific STM32 device version, which allows the operation of any bundled commercial
    stack/library available. This STM32 device shows a “U” marking option at the end of the standard part number
    and is not available for sales.

Best Regards.

STTwo-32

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

1 reply

STTwo-32
STTwo-32Best answer
ST Technical Moderator
Sep 10, 2025 9:41 AM UTC

Hello @chenchenchen1122 and welcome to the ST Community

Sorry but i think my first answer was not as clear and complete as it should be. Infact, as mentioned on the paragraph 11.1 of the UM2569:

  • Some boards feature a specific STM32 device version, which allows the operation of any bundled commercial
    stack/library available. This STM32 device shows a “U” marking option at the end of the standard part number
    and is not available for sales.

Best Regards.

STTwo-32

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.