https://devzone.nordicsemi.com/f/nordic-q-a/23940/nrf51824-automotive-design.pdf d051cefddbc197cd7d) Hello All, I am working on Automotive project using nrf51824 SOC(QFN package) and designing the custom board for the same ,I mainly using RXDen-USTelligent Community 13Tue, 01 Aug 2017 10:36:02 GMThttps://devzone.nordicsemi.com/thread/94265?ContentTypeID=1Tue, 01 Aug 2017 10:36:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3d727bb9-58e4-441c-81ff-6a99d41c980cbjorn-spockeli<ol> <li> <p>The programming pins of the nRF51824 are static and the pin numbers are stated in the nRF51824 Product Specification. If you do not have the nRF51824 Product Specification, then please contact your local Nordic Semiconductor sales representative.</p> </li> <li> <p>If you are referring to the UART TX and RX pins, then any digital I/O pin</p> </li> <li> <p>I cannot see any attachment, but if you want us to review your schematic and layout, then please provide the schematic as a PDF and the layout as Gerbers. We recommend that you use the antenna layout from reference designs, e.g. the <a href="https://www.nordicsemi.com/eng/nordic/download_resource/38675/6/62047365/64338">nRF51 DK</a> or the <a href="https://www.nordicsemi.com/eng/nordic/download_resource/38683/4/11385138/64342">nRF51 Dongle</a>.</p> </li> </ol><div style="clear:both;"></div>