https://devzone.nordicsemi.com/f/nordic-q-a/90646/about-nrf5340-programming-problemHi Sir, We are a third party programmer manufacturer. We are currently developing the nRF5340 programming software. Encountered the following problems, please help to confirm. The test programming process can be correctly programmed and verifieden-USTelligent Community 13Wed, 03 Aug 2022 10:52:27 GMThttps://devzone.nordicsemi.com/thread/379873?ContentTypeID=1Wed, 03 Aug 2022 10:52:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a675c559-15f7-41eb-91e0-23778417bc3bJared<p>Hi there,</p> <p>A power-on-reset will not erase the board, so I&#39;m guessing that you are somehow sending an erase command during the debug process.&nbsp;</p> [quote user=""]<p>The attachment is our hardware circuit, is there anything that needs to be modified or suggested?</p> <p></p>[/quote] <p>Assuming that it&#39;s the nRF5340 QKAA:</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1659523661137v1.png" alt=" " /></p> <ol> <li>No series resistor is necessary on the SWD lines</li> <li>&nbsp;Decoupling capacitor on reset is not needed</li> <li>No 0hm resistor between XC1 and XC2</li> <li>You need an extra decoupling capacitor on DECRF/DCR node</li> <li>It would be nice if you could specify the size of the decoupling capacitors</li> </ol> <p>Are you using nRF Command Line Tools ( nrfjprog) to program the board?</p> <p></p> <p>regards</p> <p>Jared&nbsp;</p><div style="clear:both;"></div>