https://devzone.nordicsemi.com/f/nordic-q-a/35321/circuit-configuration-for-usb-dongle-using-nrf52840Hi, developers ! We are going to make a USB dongle that configures RF HID using nrf52840. So when I look at the datasheet for circuit configuration, it says &quot;High voltage mode is entered when the supply voltage is only connected to the VDDH pin anden-USTelligent Community 13Wed, 13 Jun 2018 13:26:23 GMThttps://devzone.nordicsemi.com/thread/135946?ContentTypeID=1Wed, 13 Jun 2018 13:26:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2d9a2566-820c-46b5-8378-0972f350540anosebooster<p>In high voltage mode, should I put a capacitor for the vdd pin like c6, c7?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/135945?ContentTypeID=1Wed, 13 Jun 2018 13:25:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fcadd98f-b9af-4fb3-bb7d-b113cb5bebb0nosebooster<p>In high voltage mode, should I put a capacitor for the vdd pin like c6, c7?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/135819?ContentTypeID=1Wed, 13 Jun 2018 02:04:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fbac808a-c420-45ec-9801-78d3b051058enosebooster<p>I know there is no voltage on the vdd pin when in high voltage mode. Do I have to have a capacitor like c6, c7?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/135694?ContentTypeID=1Tue, 12 Jun 2018 08:48:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cb06550f-a46c-4204-a6b2-701b5bafdff4ketiljo<p>The components shown in the product specification, <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52840.ps/ref_circuitry.html?cp=2_0_0_6_2_0#concept_hqh_j22_fq">circuit configuration 1</a>, are the minimum you need:&nbsp;</p> <p><img src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-2d1b3dab14b84deaa2b167de9bba67ba/pastedimage1528793239459v2.png" alt=" " /></p> <p>All the decoupling capacitors must be in place. The 32 kHz crystal is optional though.</p> <p>&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/135675?ContentTypeID=1Tue, 12 Jun 2018 07:31:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:06249fa0-99a7-45a1-a1aa-44296a87d0a1robert<p>When VDDH is connected to 5V (VBUS), VDD should not be connected.&nbsp;Btw, you seem having wrong connections of D+ and D-: &nbsp;D+ is connected to D- and D- to D+.</p><div style="clear:both;"></div>