https://devzone.nordicsemi.com/f/nordic-q-a/77475/qspi-large-currentdear simon First of all, thank you very much for your help，Now in my program, I also encountered such a problem，I use NRF_ qspi_ Nor the power consumption of my whole system is about 600 UA. I find that my external flash can&#39;t enter DPD. If I use SPI_en-USTelligent Community 13Thu, 23 Sep 2021 09:32:59 GMThttps://devzone.nordicsemi.com/thread/330783?ContentTypeID=1Thu, 23 Sep 2021 09:32:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b80e0ad2-fa67-4d34-b8ba-5ab1f8d95d59Stian R&#248;ed Hafskjold<p>Yes, the Zephyr driver should handle this automatically. Are you able to confirm if the current is consumed by the QSPI peripheral on the nRF91, or if it is the external flash module that is unable to enter DPD?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/326276?ContentTypeID=1Tue, 24 Aug 2021 06:44:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:878332e1-2056-4966-915b-11218f807674Liuguofeng<p>dear Stian Roed Hafskjold</p> <p>&nbsp; &nbsp;Thank you for your reply, but how can I cancel the initialization function in zephyr?&nbsp;&nbsp;Now my understanding is that after power on and initializing QSPI, I directly operate the flash API without involving the underlying driver.</p> <p>best regards</p> <p>liuguofeng</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/322626?ContentTypeID=1Fri, 30 Jul 2021 10:02:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3e69783a-2396-4fca-b2a5-6cc3ddd08618Stian R&#248;ed Hafskjold<p>Hi, sorry for the late response. Did you find a solution to this? 600 uA indicates that the QSPI is running. You might have to dynamically turn it on and off, before and after the transaction. Use the uninitialize function.</p><div style="clear:both;"></div>