https://devzone.nordicsemi.com/f/nordic-q-a/71176/spi-mosi-pulldown-resistorI&#39;m working on an application with SD card, and I&#39;ve noticed what I think is strange behavior on MOSI. SD has pullup on every pin (10k), per the spec. Whichever pin I choose as MOSI floats to around 1.7V on SPI initialization, and can&#39;t pull the signalen-USTelligent Community 13Mon, 01 Feb 2021 19:48:07 GMThttps://devzone.nordicsemi.com/thread/292344?ContentTypeID=1Mon, 01 Feb 2021 19:48:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d660710e-ad65-4c94-b073-aa2cfd4d9767SmallerPond<p>Apparently there was a short on that module board that I didn&#39;t see at first.&nbsp; Everything is good.&nbsp; Sorry for the noise.</p><div style="clear:both;"></div>