11.13.19 PIR1

Peripheral Interrupt Request Register 1

Note:

Interrupt flag bits get set when an interrupt condition occurs, regardless of the state of its corresponding enable bit, or the global enable bit. User software must ensure the appropriate interrupt flag bits are clear prior to enabling an interrupt.
The external interrupt GPIO pin is selected by the INTxPPS register.

Name:	PIR1
Address:	0x4B4


Bit	7	6	5	4	3	2	1	0
	SMT1PWAIF	SMT1PRAIF	SMT1IF	CM1IF	ACTIF	ADIF	ZCDIF	INT0IF
Access	R/W/HS	R/W/HS	R/W/HS	R/W/HS	R/W/HS	R/W/HS	R/W/HS	R/W/HS
Reset	0	0	0	0	0	0	0	0

Bit 7 – SMT1PWAIF SMT1 Pulse-Width Acquisition Interrupt Flag

Value	Description
1	Interrupt has occurred (must be cleared by software)
0	Interrupt event has not occurred

Bit 6 – SMT1PRAIF SMT1 Period Acquisition Interrupt Flag

Value	Description
1	Interrupt has occurred (must be cleared by software)
0	Interrupt event has not occurred

Bit 5 – SMT1IF SMT1 Interrupt Flag

Value	Description
1	Interrupt has occurred (must be cleared by software)
0	Interrupt event has not occurred

Bit 4 – CM1IF CMP1 Interrupt Flag

Value	Description
1	Interrupt has occurred (must be cleared by software)
0	Interrupt event has not occurred

Bit 3 – ACTIF Active Clock Tuning Interrupt Flag

Value	Description
1	Interrupt has occurred (must be cleared by software)
0	Interrupt event has not occurred

Bit 2 – ADIF ADC Interrupt Flag

Value	Description
1	Interrupt has occurred (must be cleared by software)
0	Interrupt event has not occurred

Bit 1 – ZCDIF ZCD Interrupt Flag

Value	Description
1	Interrupt has occurred (must be cleared by software)
0	Interrupt event has not occurred

Bit 0 – INT0IF External Interrupt 0 Interrupt Flag⁽²⁾

Value	Description
1	Interrupt has occurred (must be cleared by software)
0	Interrupt event has not occurred

Interrupt flag bits get set when an interrupt condition occurs, regardless of the state of its corresponding enable bit, or the global enable bit. User software must ensure the appropriate interrupt flag bits are clear prior to enabling an interrupt. The external interrupt GPIO pin is selected by the INTxPPS register.