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LMI2
Visitor II
October 24, 2020
Solved

What to do with pin 9/T_JCLK of STLINK-V3MINIs 14pin connector

  • October 24, 2020
  • 2 replies
  • 1808 views

I have STM32H750 100pin chip and STLINK-V3MINI. Pin 9 of mini 14 pin connector has no obvious place on the chip. There is already a JTCK/SWCLK signal between 6/14 and PA14/STM32H.

I am using AN4938 table 6 and UM2502 also table 6 to connect debug pins.

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

    On the typical ARM 10-pin, that's the KEY pin (missing), perhaps there is a JTAG variant of the cable/connector where this is the same as JTCK, or it provides a second clock for another chain/device.

    I'd focus on SWCLK, SWDIO, SWO and NRST signals.

    2 replies

    T
    Tesla DeLoreanAnswer
    Graduate II
    October 25, 2020

    On the typical ARM 10-pin, that's the KEY pin (missing), perhaps there is a JTAG variant of the cable/connector where this is the same as JTCK, or it provides a second clock for another chain/device.

    I'd focus on SWCLK, SWDIO, SWO and NRST signals.

    L
    LMI2Author
    Visitor II
    October 25, 2020

    Yes, I have SWCLK, SWDIO, SWO and NRST signals handled. T_JCLK is just last "unhandled exception" in that connector.

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