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MBC
MBC
Associate III
October 5, 2023
Solved

USART3 bootloader pins not avaible in some packages, are they remapped?

  • October 5, 2023
  • 2 replies
  • 1075 views

STM32H5x3 / VQFN68 package

Has USART3 but AN2606 lists using PD8/PD9 that this package does not have.

AN2606 has a lot of remapping mentions for specific packages. Is this one of them, or does USART3 and bootloader not work for this package?

This topic has been closed for replies.
Best answer by Tesla DeLorean

Understand that there is frequently one die and one software package, how this bonds out depends on the number of pins on a given device. Some options will be physically excluded where those pins don't escape. 

2 replies

Tesla DeLorean
Tesla DeLoreanBest answer
Guru
October 5, 2023

Understand that there is frequently one die and one software package, how this bonds out depends on the number of pins on a given device. Some options will be physically excluded where those pins don't escape. 

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    KDJEM.1
    KDJEM.1
    ST Technical Moderator
    October 6, 2023

    Hello @MBC ,

    A similar question is already asked here.

    For STM32H573 and STM32H563, you can activate the USART3 bootloader with only by PD8/PD9 pins.

    Thank you.

    Kaouthar

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