[SOLVED] JTAG_TRST

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  • [SOLVED] JTAG_TRST

    Hi

    I need some help regarding the JTAG_TRST signal.
    I would like to know if the signal is used during programming, as I understand is the pin mostly used during debugging but can can't find anywhere it says it isn't used during programming.
    By programming I mean the segger function "#auto" and by "used" I mean is the signal pull low by the segger flasher ATE during programming?
    I hope you understand my question.

    Kind regards,
    Jakob
  • Hi Jakob,

    There are 2 signals that sound very similar:
    nRST
    This is the reset pin of the MCU.
    This signal is used during programming.

    nTRST
    Test-logic-reset. Nowadays, most MCus do not even provide this signal. It is not really used during programming. So you can usually safely leave out this signal.