31.2.22.1 Write Error (INTFLAG.WRERR)

The FCW Finite State Machine (FSM) set the WRERR flag only if the FSM aborts a Write/Erase operation (i.e. an NVMOP command). The FSM sets the flag on the detection of an error which is before it clears BUSY and sets DONE. WRERR is only set if there is possible corruption of the flash due to the NVMOP abort.