https://test-devzone.nordicsemi.com/f/nordic-q-a/88654/nrf52810-running-slower-abou-28mhzSo, i just got some modules from minew, those are MS50SFB2 ( https://www.minew.com/product/nrf52810-ms50sfb2/ ) based on nRF52810. I uploaded the blinky example on one of those and hooked an LED to the pin 2. For my surprise the led started blinking anen-USTelligent Community 13 Non-ProductionTue, 07 Jun 2022 07:04:44 GMThttps://test-devzone.nordicsemi.com/thread/371037?ContentTypeID=1Tue, 07 Jun 2022 07:04:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:288b69a6-727d-4889-abfe-bddc91bf462fuser4240<p>Hello,</p> <p>The correct fix is to remove &quot;DEVELOP_IN_NRF52832&quot; and &quot;NRFX_COREDEP_DELAY_US_LOOP_CYCLES&quot; flags as explained here: <span><a title="Transferring the project to nRF52810 hardware" href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.1.0/nrf52810_user_guide.html?cp=8_1_5_0_3#ug_52810_project">Transferring the project to nRF52810 hardware</a>. The CPU frequency is fixed at 64 MHz, so NRFX_DELAY_CPU_FREQ_MHZ should be changed back to the default.</span></p> [quote user=""](the&nbsp;pca10040 just crashes and jumps to the&nbsp;HardFault_Handler.[/quote] <p>Please note that the &quot;pca10040&quot; configuration is made to run on the nRF52832, not the nRF52810. The reason you get a hardfault is that the project will try to use RAM that is not available on your chip.</p> <p><span>Best regards,</span></p> <p><span><span>Vidar</span></span></p><div style="clear:both;"></div>