40.7.13 Interrupt Flag Status and Clear

Note: Interrupt flags must be cleared and then read back to confirm they are cleared before exiting the ISR to avoid double interrupts.

Table 40-22. Register Bit Attribute Legend
Symbol	Description	Symbol	Description	Symbol	Description
R	Readable bit	HC	Cleared by Hardware	(Grey cell)	Unimplemented
W	Writable bit	HS	Set by Hardware	X	Bit is unknown at Reset
K	Write to clear	S	Software settable bit	—	—

Name:	INTFLAG
Offset:	0x2C
Reset:	0x00000000
Property:	RW


Bit	31	30	29	28	27	26	25	24

Access
Reset


Bit	23	22	21	20	19	18	17	16
	MC[7:0]
Access
Reset	0	0	0	0	0	0	0	0


Bit	15	14	13	12	11	10	9	8
	FAULT1	FAULT0	FAULTB	FAULTA	DFS	UFS
Access
Reset	0	0	0	0	0	0


Bit	7	6	5	4	3	2	1	0
					ERR	CNT	TRG	OVF
Access
Reset					0	0	0	0

Bits 23:16 – MC[7:0] Match or Capture x

Bit 15 – FAULT1 Non-Recoverable Fault 1

This flag is set and resynchronized on the APB clock after a Non-Recoverable Fault 1 occurs.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the Non-Recoverable Fault 1 interrupt flag.

Bit 14 – FAULT0 Non-Recoverable Fault 0

This flag is set and resynchronized on the APB clock after a Non-Recoverable Fault 0 occurs.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the Non-Recoverable Fault 0 interrupt flag.

Value	Description
0	The Non-Recoverable Fault y interrupt is disabled.
1	The Non-Recoverable Fault y interrupt is enabled.

Bit 13 – FAULTB Recoverable Fault B

This flag is set and resynchronized on the APB clock after a Recoverable Fault B occurs.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the Recoverable Fault B interrupt flag.

Bit 12 – FAULTA Recoverable Fault A

This flag is set and resynchronized on the APB clock after a Recoverable Fault B occurs.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the Recoverable Fault B interrupt flag.

Bit 11 – DFS Non-Recoverable Debug Fault

This flag is set and resynchronized on the APB clock after an Debug Fault State occurs.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the Debug Fault State interrupt flag.

Bit 10 – UFS Non-Recoverable Update Fault

This flag is set when the Ramp index changes and the Lock Update bit is set (CTRLBSET.LUPD(CTRLBSET<1>)).

Writing a zero to this bit has no effect.

Writing a one to this bit clears the Non-Recoverable Update Fault interrupt flag.

Note: This bit is only available on variant L devices. Refer to the Configuration Summary for more information.

Bit 3 – ERR Error

This flag is set if a new capture occurs on a channel when the corresponding Match or Capture Channel y interrupt flag is one. In which case there is nowhere to store the new capture.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the error interrupt flag.

Bit 2 – CNT Counter

This flag is set and resynchronized on the APB clock after a counter event occurs.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the CNT interrupt flag.

Bit 1 – TRG Retrigger

This flag is set and resynchronized on the APB clock after a counter retrigger occurs.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the re-trigger interrupt flag.

Bit 0 – OVF Overflow

This flag is set and resynchronized on the APB clock after an overflow condition occurs.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit clears the Overflow interrupt flag.