https://devzone.nordicsemi.com/f/nordic-q-a/16613/iram-settings-nrf51822-xxac-sd-s110Hi everyone I am working with nrf51822 sd 110 v.7.1 If I change from XXAA to XXAC, do I have to change the IRAM settings? If yes, which are the correct settings? Thank youen-USTelligent Community 13Fri, 23 Sep 2016 11:27:27 GMThttps://devzone.nordicsemi.com/thread/63549?ContentTypeID=1Fri, 23 Sep 2016 11:27:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:354bd4ac-29cc-42e3-ba19-174ce3fda3f5Silvia<p>Thank you!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/63548?ContentTypeID=1Fri, 23 Sep 2016 07:03:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8a33584f-df8d-45a9-951f-6609dd3289f1bjorn-spockeli<p>Hi Silva,</p> <p>the nRF51822 xxAC variant has 32kB RAM compared to the 16kB of the xxAA variant. Thus, you have to adjust the upper RAM boundary in the memory settings under &quot;Options for Target&quot; --&gt; &quot;C/C++&quot; --&gt; &quot;Read/Write Memory Areas&quot; to the following</p> <pre><code>IRAM1: Start: 0x20002000 Size: 0x6000 </code></pre> <p>-Bjørn</p><div style="clear:both;"></div>