https://devzone.nordicsemi.com/f/nordic-q-a/83109/case-about-nrf52840-qspiHi, 1. Does nRF52840 CKAA WLCSP support QSPI 32MHz? 2. What should qSPI 32MHz measured CLK waveform look like? 3. Is there a 32M QSPI CLK sample diagram actually measured? 4. What are the time requirements for rising edge and falling edge ofen-USTelligent Community 13Mon, 27 Dec 2021 11:16:35 GMThttps://devzone.nordicsemi.com/thread/345090?ContentTypeID=1Mon, 27 Dec 2021 11:16:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:57f69ab2-e9f6-4368-8b31-d5b37bf83600Didrik Rokhaug<p>H</p> <p>Yes.</p> [quote user=""]<p><span>2. What should qSPI 32MHz measured CLK waveform look like?</span></p> <p><span>3. Is there a 32M QSPI CLK sample diagram actually measured?</span></p> <p><span>4. What are the time requirements for rising edge and falling edge of CLK?</span></p> <p><span>5. I don&#39;t find relevant requirements on NRF52840_PS_V1.1, do you have corresponding requirements on QSPI 32MHz waveform data?</span></p> <p></p>[/quote] <p>You can find some information and waveforms in the Product Specification:</p> <p><a href="https://infocenter.nordicsemi.com/topic/ps_nrf52840/qspi.html">https://infocenter.nordicsemi.com/topic/ps_nrf52840/qspi.html</a></p> <p>Best regards,</p> <p>Didrik</p><div style="clear:both;"></div>