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LChio
LChio
Visitor II
August 10, 2018
Question

STM32 Nucleo F103 pinout and Reference Manual mismatch for Usart1 RX/TX

  • August 10, 2018
  • 3 replies
  • 1131 views

On Reference Manual RM0008, pag 186, bit 2, Alternate Function I/O Remap, it stats that the only available pairs for Usart 1 RX/TX can be PA9/PA10 or PB6/PB7, but on the pinout image for the same NUCLEO-F103RB the Usart 1 pinout is on PA2/PA3.

Which one of the two is wrong?

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    3 replies

    Tesla DeLorean
    Tesla DeLorean
    Guru
    August 10, 2018

    USART2 uses PA2/PA3

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    I
    Imen.D
    ST Technical Moderator
    August 10, 2018

    Hello,

    On the pinout: USART2_TX is on PA2 and USART2_RX is on  PA3.

    You can also check the pin definitions in the STM32F103 datasheet.

    With Regards,

    Imen

    In order to give better visibility on the answered topics, please click on 'Best answer' on the reply which solved your issue or answered your question. Thanks
    I
    Imen.D
    ST Technical Moderator
    August 10, 2018

    Hello,

    On the pinout: USART2_TX is on PA2 and USART2_RX is on  PA3.

    You can also check the pin definitions in the STM32F103 datasheet.

    With Regards,

    Imen

    In order to give better visibility on the answered topics, please click on 'Best answer' on the reply which solved your issue or answered your question. Thanks
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