AT90PWM2 datasheet(59/365 Pages) ATMEL

59 / 365 page

AT90PWM2/3

4317B–AVR–02/05

When the BOOTRST Fuse is programmed and the Boot section size set to 2K bytes, the

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

AT90PWM2/3 is:

Address

Labels Code

Comments

.org 0x001

0x001

rjmp

PSC2_CAPT

; PSC2 Capture event Handler

0x002

rjmp

PSC2_EC

; PSC2 End Cycle Handler

...

;

0x01F

rjmp

SPM_RDY

; Store Program Memory Ready

Handler

;

.org 0xC00

0xC00

RESET: ldi

r16,high(RAMEND); Main program start

0xC01

out

SPH,r16

; Set Stack Pointer to top of

RAM

0xC02

ldi

r16,low(RAMEND)

0xC03

out

SPL,r16

0xC04

sei

; Enable interrupts

0xC05

<instr>

xxx

When the BOOTRST Fuse is programmed, the Boot section size set to 2K bytes and the

IVSEL bit in the MCUCR Register is set before any interrupts are enabled, the most typ-

ical and general program setup for the Reset and Interrupt Vector Addresses in

AT90PWM2/3 is:

Address

Labels Code

Comments

;

.org 0xC00

0xC00

rjmp

RESET

; Reset handler

0xC01

rjmp

PSC2_CAPT

; PSC2 Capture event Handler

0xC02

rjmp

PSC2_EC

; PSC2 End Cycle Handler

...

;

0xC1F

rjmp

SPM_RDY

; Store Program Memory Ready

Handler

;

0xC20

RESET: ldi

r16,high(RAMEND); Main program start

0xC21

out

SPH,r16

; Set Stack Pointer to top of

RAM

0xC22

ldi

r16,low(RAMEND)

0xC23

out

SPL,r16

0xC24

sei

; Enable interrupts

0xC25

<instr>

xxx

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