Hi. I&#39;ve developed a PCB with nRF52832 and I&#39;m having problems with the circuit. When I put my hands closelly of P0.00(XL1) and P0.01(XL2) the bahavior of nRF changes... I&#39;m not using external crystal in these pins. I&#39;m using then as IO&#39https://devzone.nordicsemi.com/f/nordic-q-a/58738/hi-i-ve-developed-a-pcb-with-nrf52832-and-i-m-having-problems-with-the-circuit-when-i-put-my-hands-closelly-of-p0-00-xl1-and-p0-01-xl2-the-bahavior-of-nrf-changes-i-m-not-using-external-crystal-in-these-pins-i-m-using-then-asHi. I&#39;ve developed a PCB with nRF52832 and I&#39;m having problems with the circuit. When I put my hands closelly of P0.00(XL1) and P0.01(XL2) the bahavior of nRF changes... I&#39;m not using external crystal in these pins. I&#39;m using then as IO&#39;s. P0.00 as outputen-USTelligent Community 13Tue, 10 Mar 2020 10:16:56 GMTRE: Hi. I've developed a PCB with nRF52832 and I'm having problems with the circuit. When I put my hands closelly of P0.00(XL1) and P0.01(XL2) the bahavior of nRF changes... I'm not using external crystal in these pins. I'm using then as IOhttps://devzone.nordicsemi.com/thread/239045?ContentTypeID=1Tue, 10 Mar 2020 10:16:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ff03bf2a-7538-4ac3-8e6b-f5b8a8f9dad0Marjeris Romero[quote user="Anderson Silva"]So I believe that I should to configure these pins as IO and configure de LFCLKSRC to be a samplerate from HFCLK...[/quote] <p>&nbsp;Hi,</p> <p>Yes, you need to configure the pins as GPIO if you are using them as GPIO, and configure the LFCLKSRC to either use the internal RC oscillator (recommended if using SoftDevice) or synthesized from HLCK.</p><div style="clear:both;"></div>RE: Hi. I've developed a PCB with nRF52832 and I'm having problems with the circuit. When I put my hands closelly of P0.00(XL1) and P0.01(XL2) the bahavior of nRF changes... I'm not using external crystal in these pins. I'm using then as IOhttps://devzone.nordicsemi.com/thread/238579?ContentTypeID=1Fri, 06 Mar 2020 15:35:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5c4beb4f-666a-4928-9365-7548c2e01e1cAnderson Silva<p>Hi.<br />I&#39;ve implemented a firmware (in MBED) that just blink som leds in the pins P0.25 till P0.28. And when I transfer (program)&nbsp;it in the nRF52, the application doesn&#39;t run (nothing happens). So when I put my fingers very close of pins &quot;<span>2-P0.00&quot; and &quot;3-P0.01&quot;</span>&nbsp;the applications runs very well... and the leds bliink perfectly.<br />As I told before I&#39;m not using the LFCLK (lower frequence crystal) in these pins (2-P0.00 e 3-P0.01)... So I believe that I should to configure these pins as IO and configure de LFCLKSRC to be a samplerate from HFCLK...<br />I hope be clear now.</p><div style="clear:both;"></div>RE: Hi. I've developed a PCB with nRF52832 and I'm having problems with the circuit. When I put my hands closelly of P0.00(XL1) and P0.01(XL2) the bahavior of nRF changes... I'm not using external crystal in these pins. I'm using then as IOhttps://devzone.nordicsemi.com/thread/238571?ContentTypeID=1Fri, 06 Mar 2020 15:15:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6f8e922b-5bdd-4333-b354-107718e100edMarjeris Romero<p>Hi,</p> <p>What do you mean when you say that the behaviour of the nRF chip changes? Can you be more specific?</p><div style="clear:both;"></div>