[81] GPIO: PIN_CNF is not retained when in debug interface mode

This anomaly applies to IC Rev. Rev 1, build codes QIAA-Cx0, CKAA-Cx0.

It was inherited from the previous IC revision Engineering C nRF52840.

Symptoms

GPIO pin configuration is reset on wakeup from System OFF.

Conditions

The system is in debug interface mode.

Consequences

GPIO state unreliable until PIN_CNF is reconfigured.