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Explorer II
July 1, 2023
Solved

STM32G431CBU6 has UART4 !

  • July 1, 2023
  • 3 replies
  • 1618 views
Hi, 
as advertised
of course , but no :
- no UART4 as the datasheet , page 14/200 (false because UFQFPN48 has 4 more pins than LQFP48 ?)
- no UART4 as CubeMx : PC10 and PC11 are present , but no UART4
I have got a STM32G431CBU6 from an chinese board maker , nice board with amazing MCU
tried UART4 as STM32duino's Serial4 : it works , so USART4 is present , officially or not ...
(didn't try the handshaking lines)
    This topic has been closed for replies.
    Best answer by KDJEM.1

    Hello @mwalt.3 ,

    The issue is fixed in DS12589 Rev 6 and in STM32CubeMX 6.11.0.

    Thank you for your contribution in STCommunity.

    Kaouthar

    3 replies

    Super User
    July 2, 2023

    as page 14 shows, STM32G431CBU6 should have the uart, only in lqfp48 not.

    (lqfp48 has more vdd/vss pins, so pc10/11 missing)

    AScha3_0-1688281791502.png

     

    mwalt.3Author
    Explorer II
    July 2, 2023
    oh right , thanks , I had (don't now why) Rev 2 , but its actually Rev 6
    still the issue with CubeMx
    Technical Moderator
    July 5, 2023

    Hello @mwalt.3 ,

    I confirm this issue in the STM32CubeMX 6.8.1 version.

    I reported this issue internally. 

    Internal ticket number: 146117 (This is an internal tracking number and is not accessible or usable by customers).

    When your question is answered, please close this topic by choosing "Accept as Solution". This will help other users find that answer faster

    Thank you.

    Kaouthar

    KDJEM.1Answer
    Technical Moderator
    March 22, 2024

    Hello @mwalt.3 ,

    The issue is fixed in DS12589 Rev 6 and in STM32CubeMX 6.11.0.

    Thank you for your contribution in STCommunity.

    Kaouthar