[242] NVMC: NVMC operations during POFWARN cause the CPU to hang

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

It was inherited from the previous IC revision Engineering C.

Symptoms

The CPU hangs.

Conditions

NVMC write or erase operation when POFWARN is asserted, and with low probability when POFWARN is asserted while an NVMC write or erase operation is ongoing.

Consequences

Code execution is halted.

Workaround

Disable POFWARN by writing POFCON before a write or erase operation. Do not attempt to write or erase if EVENTS_POFWARN is already asserted.

Parent topic: New and inherited anomalies