https://devzone.nordicsemi.com/f/nordic-q-a/32106/spim3---best-muxingHi there, SPIM3 running at max speed (32MHz) will be the fastest external interface (along with QSPI) Because I would like to make to most of it, I wondered if you had specific recommendation as to which pins to connect it to? We could maybe reen-USTelligent Community 13Fri, 06 Jul 2018 00:07:09 GMThttps://devzone.nordicsemi.com/thread/139167?ContentTypeID=1Fri, 06 Jul 2018 00:07:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:eff29360-d087-465f-b470-8cff0973f79adavid.drinn<p>I&nbsp;have a board using SPIM3 MISO and SCK on pins&nbsp;marked as &quot;Standard drive, low frequency I/O only&quot; and running at 16 Mbps with no apparent issue. I&#39;ve only done limited testing, though, and I assume perhaps it won&#39;t be very reliable in edge cases... maybe?&nbsp;</p> <p>Can you describe in more detail what this &quot;low frequency I/O only&quot; recommendation means in practice? Is it perhaps in situations where&nbsp;SPIM3 would interfere with other modules trying to use other nearby pins?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/124585?ContentTypeID=1Thu, 15 Mar 2018 13:03:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c3f0730b-c402-49e1-aa68-f77656b4b8d6Mickael<p>Got it - Thanks for that.&nbsp;</p> <p></p> <p>Mickael</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/124522?ContentTypeID=1Thu, 15 Mar 2018 08:58:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d685d8d9-0565-49d9-a23e-509f733397a3haakonsh<p>Hey Michael,</p> <p>You can use any pin labeled as a GPIO and <span style="text-decoration:underline;">not</span> &quot;Standard drive, low frequency I/O only.&quot; in the&nbsp;<a title="Pin assignments" href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52840.ps/pin.html?cp=2_0_0_3#pin_assign">Pin assignments</a>&nbsp;table.&nbsp;</p> <p>Cheers,</p> <p>Håkon.</p><div style="clear:both;"></div>