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[SOLVED] Is there a lower limit on the reference voltage for the J-Link?

Verner - Aug 26th 2021, 10:45am - J-Link/Flasher related
Post

Hi Thanks for the response. i managed to locate the problem. The mating connector on my board had been mirrored, and I got around it by making a custom cable. Everything is working fine now. Best Regards Verner
[SOLVED] Is there a lower limit on the reference voltage for the J-Link?

Verner - Aug 25th 2021, 2:33pm - J-Link/Flasher related
Post

Hi I have built a board using the NRF52840 chip. When trying to connect to it, I get the message "Target Voltage Too Low". The NRF chip has a default reference voltage of 1.8V before it's set otherwise in the software. I have measured the voltage from the chip all the way to the input pin of the Jlink. So it should be able to read it. Is there a lower limit for the reference voltage? Is 1.8V too low? Or is there anything else I need to check? All help appreciated.