https://devzone.nordicsemi.com/f/nordic-q-a/81929/program-nrf52840-using-nrf53-dkHello, Is it possible to program a Fanstel BT840 (nRF52840) module using the nRF53 DK? Please let me know. Thanksen-USTelligent Community 13Mon, 22 Nov 2021 11:48:54 GMThttps://devzone.nordicsemi.com/thread/340033?ContentTypeID=1Mon, 22 Nov 2021 11:48:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d28e0736-91a0-4351-9005-a5d4e9d223d0Amanda Hsieh<p>Hi,&nbsp;</p> <p><span>The&nbsp;</span><span>nRF5340 DK</span><span>&nbsp;supports programming and debugging external boards with nRF51 Series</span><span>, nRF52 Series, or nRF53 Series</span><span>&nbsp;</span><a title="A microchip that integrates all the necessary electronic circuits and components of a computer or other electronic systems on a single integrated circuit." href="https://infocenter.nordicsemi.com/topic/ug_nrf5340_dk/dita_common/glossary/glossary.html#soc"><dfn>System on Chip (SoC)</dfn></a><span>s. To debug an external board with SEGGER J-Link OB IF, connect to the <a title="Debug output" href="https://infocenter.nordicsemi.com/topic/ug_nrf5340_dk/UG/dk/hw_debug_out.html?cp=3_0_4_3_9">Debug output</a> connector (</span><span>P19</span><span>) with a 10-pin cable the same as nRF52DK and nRF52840DK.&nbsp;Please make sure to provide the power both for the DK and the Fanstel BT840 (nRF52840) module. You also could take a look at</span><span>&nbsp;some <a href="https://devzone.nordicsemi.com/search?q=BT840">similar cases</a> on Devzone.&nbsp;</span></p> <p><span>Regards,<br />Amanda</span></p><div style="clear:both;"></div>