reg0 different output

[atrons]

Hi, 

       We designed 3 different hardware board, and got different reg0 output:

Why we got such 3 reg0 output?

[Marjeris Romero]

Hi,

Are you using high voltage mode? How are you measuring the output voltage from REG0? Have you configured the output voltage from REG0 in the UICR? https://infocenter.nordicsemi.com/index.jsp?topic=%2Fps_nrf52840%2Fuicr.html&anchor=register.REGOUT0