ATMEGA261 View Datasheet(PDF) - Atmel Corporation
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'ATMEGA261' PDF : 226 Pages View PDF
10. Interrupts
This section describes the specifics of the interrupt handling as performed in ATtiny261/461/861.
For a general explanation of the AVR interrupt handling, refer to “Reset and Interrupt Handling”
on page 15.
10.1 Interrupt Vectors in ATtiny261/461/861
Table 10-1. 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
PCINT
Pin Change Interrupt Request
4
0x0003
TIMER1_COMPA
Timer/Counter1 Compare Match A
5
0x0004
TIMER1_COMPB
Timer/Counter1 Compare Match B
6
0x0005
TIMER1_OVF
Timer/Counter1 Overflow
7
0x0006
TIMER0_OVF
Timer/Counter0 Overflow
8
0x0007
USI_START
USI Start
9
0x0008
USI_OVF
USI Overflow
10
0x0009
EE_RDY
EEPROM Ready
11
0x000A
ANA_COMP
Analog Comparator
12
0x000B
ADC
ADC Conversion Complete
13
0x000C
WDT
Watchdog Time-out
14
0x000D
INT1
External Interrupt Request 1
15
0x000E
TIMER0_COMPA
Timer/Counter0 Compare Match A
16
0x000F
TIMER0_COMPB
Timer/Counter0 Compare Match B
17
0x0010
TIMER0_CAPT
Timer/Counter1 Capture Event
18
0x0011
TIMER1_COMPD
Timer/Counter1 Compare Match D
19
0x0012
FAULT_PROTECTION Timer/Counter1 Fault Protection
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 ATtiny261/461/861 is:
50 ATtiny261/ATtiny461/ATtiny861
7753E–AVR–06/10
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