ATmega128 datasheet(60/386 Pages) ATMEL

60 / 386 page

2467S–AVR–07/09

ATmega128

Interrupts

This section describes the specifics of the interrupt handling as performed in ATmega128. For a

general explanation of the AVR interrupt handling, refer to “Reset and Interrupt Handling” on

page 15.

Interrupt Vectors

in ATmega128

Table 23. Reset and Interrupt Vectors

Vector

No.

Program

Address(2)

Source

Interrupt Definition

$0000(1)

RESET

External Pin, Power-on Reset, Brown-out Reset,

Watchdog Reset, and JTAG AVR Reset

$0002

INT0

External Interrupt Request 0

$0004

INT1

External Interrupt Request 1

$0006

INT2

External Interrupt Request 2

$0008

INT3

External Interrupt Request 3

$000A

INT4

External Interrupt Request 4

$000C

INT5

External Interrupt Request 5

$000E

INT6

External Interrupt Request 6

$0010

INT7

External Interrupt Request 7

$0012

TIMER2 COMP

Timer/Counter2 Compare Match

$0014

TIMER2 OVF

Timer/Counter2 Overflow

$0016

TIMER1 CAPT

Timer/Counter1 Capture Event

$0018

TIMER1 COMPA

Timer/Counter1 Compare Match A

$001A

TIMER1 COMPB

Timer/Counter1 Compare Match B

$001C

TIMER1 OVF

Timer/Counter1 Overflow

$001E

TIMER0 COMP

Timer/Counter0 Compare Match

$0020

TIMER0 OVF

Timer/Counter0 Overflow

$0022

SPI, STC

SPI Serial Transfer Complete

$0024

USART0, RX

USART0, Rx Complete

$0026

USART0, UDRE

USART0 Data Register Empty

$0028

USART0, TX

USART0, Tx Complete

$002A

ADC

ADC Conversion Complete

$002C

EE READY

EEPROM Ready

$002E

ANALOG COMP

Analog Comparator

$0030(3)

TIMER1 COMPC

Timer/Countre1 Compare Match C

$0032(3)

TIMER3 CAPT

Timer/Counter3 Capture Event

$0034(3)

TIMER3 COMPA

Timer/Counter3 Compare Match A

$0036(3)

TIMER3 COMPB

Timer/Counter3 Compare Match B

$0038(3)

TIMER3 COMPC

Timer/Counter3 Compare Match C

$003A(3)

TIMER3 OVF

Timer/Counter3 Overflow

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