[208] QSPI: PPI Deactivate task does not switch off all resources

This anomaly applies to IC Rev. Engineering C, build codes QIAA-CA0, CKAA-CA0.

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

Symptoms

Current consumption is higher than expected after triggering TASKS_DEACTIVATE from the PPI.

Conditions

QSPI was running and was stopped by triggering TASKS_DEACTIVATE from the PPI.

Consequences

Current consumption higher than expected.

Workaround

Use software to write to the TASKS_DEACTIVATE register instead of triggering TASKS_DEACTIVATE from the PPI.