ATmega328PB interrupt vectors

The 45 vectors at the start of flash, two words each (a JMP). A lower number has the higher priority; vector 0 is reset. In avr-gcc a handler is ISR(NAME_vect).

Vector	Program address	Name	Handler	Source
0	`0x0000`	RESET	reset: `main()` after start-up	External Pin, Power-on Reset, Brown-out Reset and Watchdog Reset
1	`0x0002`	INT0	`INT0_vect`	External Interrupt Request 0
2	`0x0004`	INT1	`INT1_vect`	External Interrupt Request 1
3	`0x0006`	PCINT0	`PCINT0_vect`	Pin Change Interrupt Request 0
4	`0x0008`	PCINT1	`PCINT1_vect`	Pin Change Interrupt Request 1
5	`0x000A`	PCINT2	`PCINT2_vect`	Pin Change Interrupt Request 2
6	`0x000C`	WDT	`WDT_vect`	Watchdog Time-out Interrupt
7	`0x000E`	TIMER2_COMPA	`TIMER2_COMPA_vect`	Timer/Counter2 Compare Match A
8	`0x0010`	TIMER2_COMPB	`TIMER2_COMPB_vect`	Timer/Counter2 Compare Match B
9	`0x0012`	TIMER2_OVF	`TIMER2_OVF_vect`	Timer/Counter2 Overflow
10	`0x0014`	TIMER1_CAPT	`TIMER1_CAPT_vect`	Timer/Counter1 Capture Event
11	`0x0016`	TIMER1_COMPA	`TIMER1_COMPA_vect`	Timer/Counter1 Compare Match A
12	`0x0018`	TIMER1_COMPB	`TIMER1_COMPB_vect`	Timer/Counter1 Compare Match B
13	`0x001A`	TIMER1_OVF	`TIMER1_OVF_vect`	Timer/Counter1 Overflow
14	`0x001C`	TIMER0_COMPA	`TIMER0_COMPA_vect`	TimerCounter0 Compare Match A
15	`0x001E`	TIMER0_COMPB	`TIMER0_COMPB_vect`	TimerCounter0 Compare Match B
16	`0x0020`	TIMER0_OVF	`TIMER0_OVF_vect`	Timer/Counter0 Overflow
17	`0x0022`	SPI0_STC	`SPI0_STC_vect`	SPI Serial Transfer Complete
18	`0x0024`	USART0_RX	`USART0_RX_vect`	USART0 Rx Complete
19	`0x0026`	USART0_UDRE	`USART0_UDRE_vect`	USART0, Data Register Empty
20	`0x0028`	USART0_TX	`USART0_TX_vect`	USART0 Tx Complete
21	`0x002A`	ADC	`ADC_vect`	ADC Conversion Complete
22	`0x002C`	EE_READY	`EE_READY_vect`	EEPROM Ready
23	`0x002E`	ANALOG_COMP	`ANALOG_COMP_vect`	Analog Comparator
24	`0x0030`	TWI0	`TWI0_vect`	Two-wire Serial Interface
25	`0x0032`	SPM_READY	`SPM_READY_vect`	Store Program Memory Read
26	`0x0034`	USART0_START	`USART0_START_vect`	USART0 Start frame detection
27	`0x0036`	PCINT3	`PCINT3_vect`	Pin Change Interrupt Request 3
28	`0x0038`	USART1_RX	`USART1_RX_vect`	USART1 Rx Complete
29	`0x003A`	USART1_UDRE	`USART1_UDRE_vect`	USART1, Data Register Empty
30	`0x003C`	USART1_TX	`USART1_TX_vect`	USART1 Tx Complete
31	`0x003E`	USART1_START	`USART1_START_vect`	USART1 Start frame detection
32	`0x0040`	TIMER3_CAPT	`TIMER3_CAPT_vect`	Timer/Counter3 Capture Event
33	`0x0042`	TIMER3_COMPA	`TIMER3_COMPA_vect`	Timer/Counter3 Compare Match A
34	`0x0044`	TIMER3_COMPB	`TIMER3_COMPB_vect`	Timer/Counter3 Compare Match B
35	`0x0046`	TIMER3_OVF	`TIMER3_OVF_vect`	Timer/Counter3 Overflow
36	`0x0048`	CFD	`CFD_vect`	Clock failure detection interrupt
37	`0x004A`	PTC_EOC	`PTC_EOC_vect`	PTC End of conversion
38	`0x004C`	PTC_WCOMP	`PTC_WCOMP_vect`	PTC Window comparator mode
39	`0x004E`	SPI1_STC	`SPI1_STC_vect`	SPI1 Serial Transfer Complete
40	`0x0050`	TWI1	`TWI1_vect`	TWI Transfer Complete
41	`0x0052`	TIMER4_CAPT	`TIMER4_CAPT_vect`	Timer/Counter4 Capture Event
42	`0x0054`	TIMER4_COMPA	`TIMER4_COMPA_vect`	Timer/Counter4 Compare Match A
43	`0x0056`	TIMER4_COMPB	`TIMER4_COMPB_vect`	Timer/Counter4 Compare Match B
44	`0x0058`	TIMER4_OVF	`TIMER4_OVF_vect`	Timer/Counter4 Overflow