ATMEGA640 datasheet(101/436 Pages) MICROCHIP

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101

ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET]

DS40002211A

14. Interrupts

This section describes the specifics of the interrupt handling as performed in ATmega640/1280/1281/2560/2561.

For a general explanation of the AVR interrupt handling, refer to “Reset and Interrupt Handling” on page 17.

14.1 Interrupt Vectors in ATmega640/1280/1281/2560/2561

Table 14-1.

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

PCINT0

Pin Change Interrupt Request 0

$0014

PCINT1

Pin Change Interrupt Request 1

$0016(3)

PCINT2

Pin Change Interrupt Request 2

$0018

WDT

Watchdog Time-out Interrupt

$001A

TIMER2 COMPA

Timer/Counter2 Compare Match A

$001C

TIMER2 COMPB

Timer/Counter2 Compare Match B

$001E

TIMER2 OVF

Timer/Counter2 Overflow

$0020

TIMER1 CAPT

Timer/Counter1 Capture Event

$0022

TIMER1 COMPA

Timer/Counter1 Compare Match A

$0024

TIMER1 COMPB

Timer/Counter1 Compare Match B

$0026

TIMER1 COMPC

Timer/Counter1 Compare Match C

$0028

TIMER1 OVF

Timer/Counter1 Overflow

$002A

TIMER0 COMPA

Timer/Counter0 Compare Match A

$002C

TIMER0 COMPB

Timer/Counter0 Compare match B

$002E

TIMER0 OVF

Timer/Counter0 Overflow

$0030

SPI, STC

SPI Serial Transfer Complete

$0032

USART0 RX

USART0 Rx Complete

$0034

USART0 UDRE

USART0 Data Register Empty

$0036

USART0 TX

USART0 Tx Complete

$0038

ANALOG COMP

Analog Comparator

$003A

ADC

ADC Conversion Complete

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