ATMEGA32_14 Datasheet, PDF (46/346 Pages) ATMEL Corporation – High Endurance Non-volatile Memory segments

2503Q–AVR–02/11
ATmega32(L)
When the BOOTRST Fuse is unprogrammed, the Boot section size set to 4 Kbytes and the
IVSEL bit in the GICR Register is set before any interrupts are enabled, the most typical and
general program setup for the Reset and Interrupt Vector Addresses is:
Address Labels Code
Comments
$000
RESET: ldi r16,high(RAMEND) ; Main program start
$001
out SPH,r16
; Set Stack Pointer to top of RAM
$002
ldi r16,low(RAMEND)
$003
out SPL,r16
$004
sei
; Enable interrupts
$005
<instr> xxx
;
.org $3802
$3802
jmp EXT_INT0
; IRQ0 Handler
$3804
jmp EXT_INT1
; IRQ1 Handler
...
....
..
;
$3828
jmp SPM_RDY
; Store Program Memory Ready Handler
When the BOOTRST Fuse is programmed and the Boot section size set to 4Kbytes, the most
typical and general program setup for the Reset and Interrupt Vector Addresses is:
Address Labels
Code
Comments
.org $002
$002
jmp EXT_INT0
; IRQ0 Handler
$004
jmp EXT_INT1
; IRQ1 Handler
...
....
..
;
$028
jmp SPM_RDY
; Store Program Memory Ready Handler
;
.org $3800
$3800 RESET: ldi r16,high(RAMEND) ; Main program start
$3801
out SPH,r16
; Set Stack Pointer to top of RAM
$3802
ldi r16,low(RAMEND)
$3803
out SPL,r16
$3804
sei
; Enable interrupts
$3805
<instr> xxx
When the BOOTRST Fuse is programmed, the Boot section size set to 4Kbytes and the IVSEL
bit in the GICR Register is set before any interrupts are enabled, the most typical and general
program setup for the Reset and Interrupt Vector Addresses is:
Address Labels Code
Comments
.org $3800
$3800
$3802
jmp RESET
jmp EXT_INT0
; Reset handler
; IRQ0 Handler
$3804
jmp EXT_INT1
; IRQ1 Handler
...
....
..
;
$3828
jmp SPM_RDY
; Store Program Memory Ready Handler
;
$382A RESET: ldi r16,high(RAMEND) ; Main program start
$382B
out SPH,r16
; Set Stack Pointer to top of RAM
$382C
ldi r16,low(RAMEND)
$382D
out SPL,r16
$382E
sei
; Enable interrupts
$382F
<instr> xxx
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