https://devzone.nordicsemi.com/f/nordic-q-a/48557/how-to-modify-the-mdk-of-sdkI am using QSPI of nRF52480 with freqency 2M Hz. Now I want to reduce to 1M Hz, but QSPI_CONFIG_FREQUENCY min value is 15 // &lt;o&gt; QSPI_CONFIG_FREQUENCY - Frequency divider. // &lt;0=&gt; 32MHz/1 // &lt;1=&gt; 32MHz/2 // &lt;2=&gt; 32MHz/3 // &lt;3=&gt; 32MHz/4 // &lt;4=&gt; 32MHzen-USTelligent Community 13Mon, 17 Jun 2019 12:22:49 GMThttps://devzone.nordicsemi.com/thread/193172?ContentTypeID=1Mon, 17 Jun 2019 12:22:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:95c28b0d-af00-4318-9dd3-7703671af6c6ovrebekk<p>Hi&nbsp;</p> <p>This is a limitation in the QSPI hardware module, it is not something you can change in software.&nbsp;</p> <p>If you look at the <a href="https://infocenter.nordicsemi.com/topic/ps_nrf52840/qspi.html?cp=3_0_0_5_18_9_26#register.IFCONFIG1">IFCONFIG1 specification</a> in the data sheet you will see that the SCKFREQ field is limited to values in the 0-15 range.&nbsp;</p> <p>Is there any particular reason you can&#39;t run the QSPI at 2MHz?</p> <p>Best regards<br />Torbjørn</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/192638?ContentTypeID=1Thu, 13 Jun 2019 10:54:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7fb51cd7-c377-4cb9-bcd0-d50a7d14d33fawneil<p>How to properly post source code:</p> <p><img alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/8407._5F00_Insert-Code-_2D00_-Nordic.png" /></p><div style="clear:both;"></div>