ATMEGA406_0607 datasheet(52/263 Pages) ATMEL

52 / 263 page

2548E–AVR–07/06

ATmega406

Vectors are not used, and regular program code can be placed at these locations. This is also

the case if the Reset Vector is in the Application section while the Interrupt Vectors are in the

Boot section or vice versa.

Note:

1. The Boot Reset Address is shown in Table 27-7 on page 193. For the BOOTRST Fuse “1”

means unprogrammed while “0” means programmed.

The most typical and general program setup for the Reset and Interrupt Vector Addresses in

ATmega406 is:

Table 11-2.

Reset and Interrupt Vectors Placement

(1)

BOOTRST

IVSEL

Reset Address

Interrupt Vectors Start Address

0x0000

0x0002

0x0000

Boot Reset Address + 0x0002

Boot Reset Address

0x0002

Boot Reset Address

Boot Reset Address + 0x0002

Address

Labels

Code

Comments

0x0000

jmp

RESET

; Reset Handler

0x0002

jmp

BPINT

; Battery Protection Interrupt Handler

0x0004

jmp

EXT_INT0

; External Interrupt Request 0 Handler

0x0006

jmp

EXT_INT1

; External Interrupt Request 1 Handler

0x0008

jmp

EXT_INT2

; External Interrupt Request 2 Handler

0x000A

jmp

EXT_INT3

; External Interrupt Request 3 Handler

0x000C

jmp

PCINT0

; Pin Change Interrupt 0 Handler

0x000E

jmp

PCINT1

; Pin Change Interrupt 1 Handler

0x0010

jmp

WDT

; Watchdog Time-out Interrupt

0x0012

jmp

WAKE_UP

; Wake-up Timer Overflow

0x0014

jmp

TIM1_COMP

; Timer1 Compare Handler

0x0016

jmp

TIM1_OVF

; Timer1 Overflow Handler

0X0018

jmp

TIM0_COMPA

; Timer0 CompareA Handler

0x001A

jmp

TIM0_COMPB

; Timer0 CompareB Handler

0x001C

jmp

TIM0_OVF

; Timer0 Overflow Handler

0x001E

jmp

TWI_BUS_CD

; Two-wire Bus Connect/Disconnect Handler

0x0020

jmp

TWI

; Two-wire Serial Interface Handler

0x0022

jmp

VADC

; Voltage ADC Conversion Complete Handler

0x0024

jmp

CCADC_CONV

; CC-ADC Instantaneous Current Conversion Complete Handler

0x0026

jmp

CCADC_REC_CUR

; CC-ADC Regular Current Handler

0x0028

jmp

CCADC_ACC

; CC-ADC Accumulate Current Conversion Complete Handler

0x002A

jmp

EE_RDY

; EEPROM Ready Handler

0x002C

jmp

SPM_RDY

; Store Program Memory Ready Handler

;

0x002E

RESET:

ldi

r16, high(RAMEND)

; Main program start

0x002F

out

SPH,r16

; Set Stack Pointer to top of RAM

0x0030

ldi

r16, low(RAMEND)

0x0031

out

SPL,r16

0x0032

sei

; Enable interrupts

0x0033

<instr>

xxx

0x0034

...

;

ATMEGA406_0607 Datasheet(PDF) 52 Page - ATMEL Corporation

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