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Explorer II
November 6, 2023
Solved

what/where is USB tSTARTUP of STM32H563 ?

  • November 6, 2023
  • 5 replies
  • 1226 views

The ref manual (RM0481 page 2585) says: "This circuit has a defined startup time (tSTARTUP specified in the datasheet) during which the behavior of the USB transceiver is not defined.". I searched for USB and tSTARTUP but could not find anything in the datasheet (DS14258 Rev 1). Is it missing or mentioned differently ?

    This topic has been closed for replies.
    Best answer by KDJEM.1

    Hello @mete ,

     

    The USB tSTARTUP is missing in the datasheet.

    I reported this issue internally.

    Internal ticket number165751  (This is an internal tracking number and is not accessible or usable by customers).

    Thank you.

    Kaouthar

    5 replies

    Technical Moderator
    November 6, 2023

    Hello @mete ,

    Thank you for bringing this issue to our attention.

    I will check internally and I will get back to you with more details as soon as possible.

    Thank you.

    Kaouthar

    KDJEM.1Answer
    Technical Moderator
    November 7, 2023

    Hello @mete ,

     

    The USB tSTARTUP is missing in the datasheet.

    I reported this issue internally.

    Internal ticket number165751  (This is an internal tracking number and is not accessible or usable by customers).

    Thank you.

    Kaouthar

    meteAuthor
    Explorer II
    November 7, 2023

    Thanks. I have seen it is written in the datasheet of STM32H503, and it is 1us. Can I assume it is going to be the same for H563 as well ?

    Technical Moderator
    November 8, 2023

    Hello @mete ,

    Yes, the STM32H563 has the same USB tSTARTUP  "1µs" as STM32H503.

    Thank you for your contribution in STCommunity.

    Kaouthar 

    Technical Moderator
    October 15, 2025

    Hello @mete ;

     

    The issue is fixed in DS14258.

     

    Thank you.

    Kaouthar