https://devzone.nordicsemi.com/f/nordic-q-a/122526/nrf5340-stereo-pdm-microphone-speaker-wiringHello, I am working on a hardware design with two MEMS PDM microphones and a mono speaker. I think I have the peripherals allocated and wired correctly but wanted to run it by the forum for a sanity check. MEMS Microphones This is simply wired asen-USTelligent Community 13Thu, 26 Jun 2025 15:02:39 GMThttps://devzone.nordicsemi.com/thread/540613?ContentTypeID=1Thu, 26 Jun 2025 15:02:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:46c9ff41-c543-46a9-942d-45729197d99fSeattleChris<p>OK, and yes, understood on the pin assignments. Thank you Amanda!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/540588?ContentTypeID=1Thu, 26 Jun 2025 13:26:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:032f6a47-5039-4377-a46d-21f840ee85ddAmanda Hsieh<p>Hi,&nbsp;</p> <p><span>P0.02 and P0.03 are NFC pins by default. To use them as normal GPIO&#39;s you need to&nbsp;disable the NFC feature in&nbsp;</span><a href="https://infocenter.nordicsemi.com/topic/ps_nrf5340/chapters/uicr/doc/uicr.html?cp=4_0_0_4_3_2_0_6#register.NFCPINS">UICR.NFCPINS</a><span>. See <a href="https://devzone.nordicsemi.com/f/nordic-q-a/96605/nrf5340-p0-03-not-working-as-uart-rx/409489">this post</a>&nbsp;and&nbsp;</span><a href="https://docs.nordicsemi.com/bundle/ps_nrf5340/page/chapters/pin.html">Pin assignments</a>. The other pins should be fine.&nbsp;</p> <p>Regards,<br />Amanda H.</p> <p><span>&nbsp;</span></p> <div></div><div style="clear:both;"></div>