
54
7530J–AVR–03/12
Atmel ATmega48/88/168 Automotive
Address Labels Code
Comments
0x000
rjmp
RESET
; Reset Handler
0x001
rjmp
EXT_INT0
; IRQ0 Handler
0x002
rjmp
EXT_INT1
; IRQ1 Handler
0x003
rjmp
PCINT0
; PCINT0 Handler
0x004
rjmp
PCINT1
; PCINT1 Handler
0x005
rjmp
PCINT2
; PCINT2 Handler
0x006
rjmp
WDT
; Watchdog Timer Handler
0x007
rjmp
TIM2_COMPA
; Timer2 Compare A Handler
0x008
rjmp
TIM2_COMPB
; Timer2 Compare B Handler
0x009
rjmp
TIM2_OVF
; Timer2 Overflow Handler
0x00A
rjmp
TIM1_CAPT
; Timer1 Capture Handler
0x00B
rjmp
TIM1_COMPA
; Timer1 Compare A Handler
0x00C
rjmp
TIM1_COMPB
; Timer1 Compare B Handler
0x00D
rjmp
TIM1_OVF
; Timer1 Overflow Handler
0x00E
rjmp
TIM0_COMPA
; Timer0 Compare A Handler
0x00F
rjmp
TIM0_COMPB
; Timer0 Compare B Handler
0x010
rjmp
TIM0_OVF
; Timer0 Overflow Handler
0x011
rjmp
SPI_STC
; SPI Transfer Complete Handler
0x012
rjmp
USART_RXC
; USART, RX Complete Handler
0x013
rjmp
USART_UDRE
; USART, UDR Empty Handler
0x014
rjmp
USART_TXC
; USART, TX Complete Handler
0x015
rjmp
ADC
; ADC Conversion Complete Handler
0x016
rjmp
EE_RDY
; EEPROM Ready Handler
0x017
rjmp
ANA_COMP
; Analog Comparator Handler
0x018
rjmp
TWI
; 2-wire Serial Interface Handler
0x019
rjmp
SPM_RDY
; Store Program Memory Ready Handler
;
0x01ARESET:
ldi
r16, high(RAMEND); Main program start
0x01B
out
SPH,r16
; Set Stack Pointer to top of RAM
0x01C
ldi
r16, low(RAMEND)
0x01D
out
SPL,r16
0x01E
sei
; Enable interrupts
0x01F
<instr>
xxx
...
9.2
Interrupt Vectors in ATmega88
Table 9-2.
Reset and Interrupt Vectors in ATmega88
Vector
No.
Program
Source
Interrupt Definition
RESET
External Pin, Power-on Reset, Brown-out Reset and Watchdog
System Reset
2
0x001
INT0
External Interrupt Request 0
3
0x002
INT1
External Interrupt Request 1
4
0x003
PCINT0
Pin Change Interrupt Request 0