CAn you use internal pull-ups/downs on STM32F7 on SWDIO and SWCLK pins

[anonymous.8]

Posted on December 07, 2017 at 19:44

Hi, I have a Segger-Jink Plus and they recommend the STM32 SWDIO pin to be pulled up to VDD and SWCLK pin to be pulled down to VSS when they are otherwise open and unused. If I configured those pins to be inputs with internal pull-up and pull-down respectively, would they then still function as SWDIO and SWCLK pins or would the chip be bricked as far as the SWD interface goes?

Thanks.

[Tesla DeLorean]

Posted on December 07, 2017 at 19:52

I would avoid fiddling with the pins. When you break the interface you have the 'Connect under Reset' options if you provide the NRST pin on the debug header to getting into a 'bricked' device.