https://devzone.nordicsemi.com/f/nordic-q-a/121935/nrf9151-custom-uicrI used to use UICR to store the serial number information during the production with nRF52832. I am working on new project with nRF9151, but when I check the datasheet, nRF9151 doesn&#39;t seem to have a reserved area for custom UICR similar to nRF52832en-USTelligent Community 13Mon, 02 Jun 2025 03:59:00 GMThttps://devzone.nordicsemi.com/thread/537577?ContentTypeID=1Mon, 02 Jun 2025 03:59:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:213e21a6-6772-44a1-aef8-a425c7ccdadalammobile<p>From&nbsp;</p> <div class="mantine-Modal-header mantine-1y2g7r4"> <div class="mantine-Group-root mantine-1v2n7j0"> <div class="mantine-Group-root mantine-1c34sce"> <h3 class="mantine-Text-root mantine-Title-root mantine-e6gq63">Nordic Semiconductor AI</h3> </div> <div class="mantine-Group-root mantine-1v5jpi4"><span>The&nbsp;</span><code class="mantine-Code-root mantine-fkl7uc" dir="ltr">UICR-&gt;OTP</code><span>&nbsp;refers to the One-Time Programmable (OTP) region within the User Information Configuration Registers (UICR) on certain Nordic Semiconductor devices. This region is a special part of non-volatile memory that allows data to be written only once (per halfword), and is typically used to store static configuration values that should not change during the product&#39;s lifetime, such as device IDs or cryptographic keys.</span></div> </div> </div> <div id="mantine-qi3ojw1is-body" class="mantine-Modal-body mantine-1gngn6k"> <div class="scrollable-container"> <div> <div class="mantine-r3r7vl"> <div class="mantine-Group-root mantine-1qj7haw"></div> </div> </div> </div> </div><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/537576?ContentTypeID=1Mon, 02 Jun 2025 03:55:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9aba99b9-607c-47b1-9e99-e0a5c87a81b2toto cho<p>Ah, is this OTP for the custom data? I thought that this has different purpose.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/537575?ContentTypeID=1Mon, 02 Jun 2025 03:52:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b4b29e86-d6e6-4644-b78c-fe26ec292265lammobile<p><a href="https://devzone.nordicsemi.com/members/toto-cho">toto cho</a>&nbsp;, Did you try this one?<br /><br /><a id="" href="https://docs.nordicsemi.com/bundle/ps_nrf9151/page/uicr.html">https://docs.nordicsemi.com/bundle/ps_nrf9151/page/uicr.html</a><br /><span>UICR-&gt;OTP</span></p><div style="clear:both;"></div>