https://devzone.nordicsemi.com/f/nordic-q-a/4737/nrf51822-standalone-programmingHi I have PCA10005 module disassembled from mother board and with VCC_nrf, GND connected to external supply. The chip is able to work with pre-programmed data. Is anyone can let me know how can I program nrf51822 without mother board, WDIO,SWDCLKen-USTelligent Community 13Mon, 08 Dec 2014 13:20:16 GMThttps://devzone.nordicsemi.com/thread/16769?ContentTypeID=1Mon, 08 Dec 2014 13:20:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:793aa358-e040-4162-9914-14e6ee3ab11bNguyen Hoan Hoang<p>From the connector of the answer by MH. Connect VTref to your VCC , pin 3 to GND. If not working correctly connect also pin 5 &amp; 9 to GND. Do not connect pin 10. nRF51x22 has shared SWDIO &amp; nReset. The Jtag does not power your board. You need to power it separately. VTref is for the jtag to sense the voltage on your board not to power it. You also need a 100K pulldown on the SWCLK.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/16768?ContentTypeID=1Mon, 08 Dec 2014 13:01:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:388a9869-b037-43f0-afa2-01b9bf712c92jjww<p>Hi I have updated the post</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/16771?ContentTypeID=1Mon, 08 Dec 2014 09:31:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fd4121fc-7b6d-46bc-9809-baf136d82920Inspectron<p>I have also troubles with the segger programmer module(J-LINK Lite). The nRFGo Studio seems not to recognize the segger programmer module when I connect it with my PCA 100004 board.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/16772?ContentTypeID=1Mon, 08 Dec 2014 06:06:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0a0a4f9a-4709-4273-8356-2931fb45370ejjww<p>The PCA10005 module has ground connected to segger module. Is this due to RST signal ？</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/16770?ContentTypeID=1Sun, 07 Dec 2014 06:08:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f86eae61-8278-462b-9700-b7ddc195664fMH<p>Try Connecting VCC and GND of the Module to the VTref and GND of the segger programmer, and SWDIO and SWCLK of the module to the same pin of the segger programmer.</p> <p>Below Picture is the J-Link pinout</p> <p><img src="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/J_2D00_Link_5F00_9_2D00_pin_5F00_Cortex_2D00_M_5F00_Adapter.png" alt="J-Link Pinout" /></p><div style="clear:both;"></div>