nrf52832 Taking power on UART Lines

[kamran_iosite]

nrf52832 is connected to the main controller of the circuit on uart lines (RX and TX).

We have observed that even when we completely cut-off the power of nrf52832 then also it does not switch off. And it continues to be and running. And it draws power from the main controller through UART lines. Is this normal behavior? What can be done to avoid this?

Thnx for the help

[awneil]

kamran_iosite said:

Is this normal behavior?

Yes. For any chip - not just nRF.

kamran_iosite said:

What can be done to avoid this

You need to ensure that signal lines are either disconnected, or put into a suitable state.