ATMEGA325-16AJ ATMEL [ATMEL Corporation], ATMEGA325-16AJ Datasheet - Page 47

• Manufacturer Part Number: ATMEGA325-16AJ
• Description: 8-bit Microcontroller with In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

Interrupts
Interrupt Vectors in ATmega325/3250/645/6450
2570A–AVR–09/04
This section describes the specifics of the interrupt handling as performed in
ATmega325/3250/645/6450. For a general explanation of the AVR interrupt handling,
refer to “Reset and Interrupt Handling” on page 14.
Table 22. Reset and Interrupt Vectors
Notes:
Vector
24
25
No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
1
2
3
4
5
6
7
8
9
(3)
(3)
1. When the BOOTRST Fuse is programmed, the device will jump to the Boot Loader
2. When the IVSEL bit in MCUCR is set, Interrupt Vectors will be moved to the start of
3. PCINT2 and PCINT3 are only present in ATmega3250 and ATmega6450.
Address
Program
0x0000
address at reset, see “Boot Loader Support – Read-While-Write Self-Programming”
on page 242.
the Boot Flash Section. The address of each Interrupt Vector will then be the address
in this table added to the start address of the Boot Flash Section.
0x000A
0x000C
0x000E
0x001A
0x001C
0x001E
0x002A
0x002C
0x002E
0x0002
0x0004
0x0006
0x0008
0x0010
0x0012
0x0014
0x0016
0x0018
0x0020
0x0022
0x0024
0x0026
0x0028
0x0030
(1)
(2)
Source
RESET
TIMER2 COMP
TIMER1 COMPB
ANALOG COMP
NOT_USED
INT0
PCINT0
PCINT1
TIMER2 OVF
TIMER1 CAPT
TIMER1 COMPA
TIMER1 OVF
TIMER0 COMP
TIMER0 OVF
SPI, STC
USART, RX
USART, UDRE
USART, TX
USI START
USI OVERFLOW
ADC
EE READY
SPM READY
PCINT2
PCINT3
ATmega325/3250/645/6450
Interrupt Definition
External Pin, Power-on Reset, Brown-out Reset,
Watchdog Reset, and JTAG AVR Reset
External Interrupt Request 0
Pin Change Interrupt Request 0
Pin Change Interrupt Request 1
Timer/Counter2 Compare Match
Timer/Counter2 Overflow
Timer/Counter1 Capture Event
Timer/Counter1 Compare Match A
Timer/Counter1 Compare Match B
Timer/Counter1 Overflow
Timer/Counter0 Compare Match
Timer/Counter0 Overflow
SPI Serial Transfer Complete
USART, Rx Complete
USART Data Register Empty
USART, Tx Complete
USI Start Condition
USI Overflow
Analog Comparator
ADC Conversion Complete
EEPROM Ready
Store Program Memory Ready
RESERVED
Pin Change Interrupt Request 2
Pin Change Interrupt Request 3
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