23.5.5 Interrupt Flags

Name:	INTFLAGS
Offset:	0x06
Reset:	0x00
Property:	-


Bit	7	6	5	4	3	2	1	0
							OVF	CAPT
Access							R/W	R/W
Reset							0	0

Bit 1 – OVF Overflow Interrupt Flag

This bit is set when an overflow interrupt occurs. The flag is set whenever the timer/counter wraps from MAX to BOTTOM.

The bit is cleared by writing a ‘1’ to the bit position.

Bit 0 – CAPT Capture Interrupt Flag

This bit is set when a capture interrupt occurs. The interrupt conditions are dependent on the Counter Mode (CNTMODE) bit field in the Control B (TCBn.CTRLB) register.

This bit is cleared by writing a ‘1’ to it or when the Capture register is read in Capture mode.

Table 23-6. Interrupt Sources Set Conditions by Counter Mode
Counter Mode	Interrupt Set Condition	TOP Value	CAPT
Periodic Interrupt mode	Set when the counter reaches TOP	CCMP	CNT == TOP
Timeout Check mode	Set when the counter reaches TOP
Single-Shot mode	Set when the counter reaches TOP
Input Capture Frequency Measurement mode	Set on edge when the Capture register is loaded and the counter restarts; the flag clears when the capture is read	--	On Event, copy CNT to CCMP, and restart counting (CNT == BOTTOM)
Input Capture on Event mode	Set when an event occurs and the Capture register is loaded; the flag clears when the capture is read		On Event, copy CNT to CCMP, and continue counting
Input Capture Pulse-Width Measurement mode	Set on edge when the Capture register is loaded; the previous edge initialized the count; the flag clears when the capture is read
Input Capture Frequency and Pulse-Width Measurement mode	Set on the second edge (positive or negative) when the counter is stopped; the flag clears when the capture is read
8-Bit PWM mode	Set when the counter reaches CCMH	CCML	CNT == CCMH