https://devzone.nordicsemi.com/f/nordic-q-a/74787/nrf5340-qspi-and-micro-sdHi, Is it at all possible to use the QSPI interface of nRF5340 to interface a micro SD card? Is sending custom instructions combined with long frames, as suggested here , the way to go? Best Regards, Göran Nordahlen-USTelligent Community 13Thu, 06 May 2021 11:00:21 GMThttps://devzone.nordicsemi.com/thread/308517?ContentTypeID=1Thu, 06 May 2021 11:00:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5e973b4a-bfc4-4092-9224-6d04921a62cdSimon<p>It does not seem like it is possible to use QSPI with an SD card unfortunately:&nbsp;<a href="https://devzone.nordicsemi.com/support-private/support/264659#permalink=640626">https://devzone.nordicsemi.com/support-private/support/264659#permalink=640626</a></p> <p style="padding-left:30px;"><em>&quot;Using SD card in any other modes than SPI would require a licence from the SD card association,&nbsp;<a href="https://electronics.stackexchange.com/questions/132251/sd-card-4-bit-mode-license">link</a>. Even if we had such an example, we wouldn&#39;t be allowed to publish it. Hence only SPI examples are shown for SD Cards.&quot;</em></p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>