https://devzone.nordicsemi.com/f/nordic-q-a/127140/qspiI am attempting to use the nRF52840 QSPI periphery to communicate with an SRAM chip. The chip is IS66WVS8M8FBLL-104NLI. I am unable to communicate with it using QSPI. I am successful at using regular SPI, but the QSPI is not working. I believe all 6 pinsen-USTelligent Community 13Wed, 25 Feb 2026 12:57:59 GMThttps://devzone.nordicsemi.com/thread/562038?ContentTypeID=1Wed, 25 Feb 2026 12:57:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:488dfcfa-cf50-4cea-a06e-e5e68d17ea29H&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>The nRF52840 QSPI peripheral is setup in hardware to target NOR based flash devices.</p> <p>Using it for other types of memory will be problematic.</p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/561960?ContentTypeID=1Tue, 24 Feb 2026 14:19:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e7f43e74-45b1-4b24-aeef-4413dc64d045Claude<p>Is there any known SRAM chip that is compatible with the nRF52840?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/561904?ContentTypeID=1Tue, 24 Feb 2026 06:45:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5644bf6a-61f7-439a-a4b6-626d0625bc6bTurbo J<p>Read the QSPI chapter carefully in the PS document. Its very picky about command and communication structure (most of which is hard wired).</p> <p>So anything that is not from the family of NOR flash chips like on the DK is highly unlikely to work. A few minor exceptions exist though.</p><div style="clear:both;"></div>