[237] SAADC: TASKS_CALIBRATEOFFSET shall only be used before TASKS_START or after EVENTS_END

nRF52805 Revision 2 Errata

This anomaly applies to Revision 2, build code CAAA-Bxx.

It was inherited from the previous SoC revision Revision 1.

Symptoms

Unexpected samples are written to RAM.

Conditions

TASKS_CALIBRATEOFFSET is triggered between TASKS_START and EVENTS_END.

Consequences

The values written to RAM does not represent the sampled SAADC input level.

Workaround

TASKS_CALIBRATEOFFSET shall be used only before TASKS_START or after EVENTS_END.