66
9151AINDCO07/09
ATA8742
17. Interrupts
This section describes the specifics of the interrupt handling as performed in ATtiny24/44/84.
For a general explanation of the AVR interrupt handling, see Reset and Interrupt Handling on
page 28.
17.1   Interrupt Vectors
If the program never enables an interrupt source, the Interrupt Vectors are not used, and regular
program code can be placed at these locations. The most typical and general program setup for
the Reset and Interrupt Vector Addresses in ATtiny24/44/84 is:
Table 17-1.    Reset and Interrupt Vectors
Vector No.
Program Address
Source
Interrupt Definition
1
0x0000
RESET
External Pin, Power-on Reset,
Brown-out Reset, Watchdog Reset
2
0x0001
INT0
External Interrupt Request 0
3
0x0002
PCINT0
Pin Change Interrupt Request 0
4
0x0003
PCINT1
Pin Change Interrupt Request 1
5
0x0004
WDT
Watchdog Time-out
6
0x0005
TIMER1 CAPT
Timer/Counter1 Capture Event
7
0x0006
TIMER1 COMPA
Timer/Counter1 Compare Match A
8
0x0007
TIMER1 COMPB
Timer/Counter1 Compare Match B
9
0x0008
TIMER1 OVF
Timer/Counter0 Overflow
10
0x0009
TIMER0 COMPA
Timer/Counter0 Compare Match A
11
0x000A
TIMER0 COMPB
Timer/Counter0 Compare Match B
12
0x000B
TIMER0 OVF
Timer/Counter0 Overflow
13
0x000C
ANA_COMP
Analog Comparator
14
0x000D
ADC
ADC Conversion Complete
15
0x000E
EE_RDY
EEPROM Ready
16
0x000F
USI_START
USI START
17
0x0010
USI_OVF
USI Overflow
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