nRF52840 System OFF mode

[theinoo]

What is the voltage level at VDD pin output when nRF52840 device is in System OFF mode?

[Stian Røed Hafskjold]

Hi, it's the same as when it's in system ON mode.

[theinoo]

In order to reduce the current consumption to the other devices connected with VDD_nRF power supply, VDD pin is needed to shut down the power (zero voltage level). In this case, can VDD pin be set zero voltage level in system ON mode? 

[Stian Røed Hafskjold]

The nRF52 chip itself is powered by the output of REG0, VDD. So if VDD was 0 volt the nRF52 would have been completely shut down as well. So it's not possible.