18.8.6 Interrupt Flag Status and Clear

Name: INTFLAG
Offset: 0x6
Reset: 0x00
Property: 

Bit 76543210 
        EW 
Access R/W 
Reset 0 

Bit 0 – EW Early Warning

This flag is set when an Early Warning interrupt occurs, as defined by the EWOFFSET bit group in EWCTRL.

Writing a zero to this bit has no effect.
Writing a one to this bit clears the Early Warning interrupt flag.