ATA6612_10 Datasheet, PDF (82/364 Pages) ATMEL Corporation – Very Low Current Consumption in Sleep Mode

When the BOOTRST Fuse is unprogrammed, 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 typical and
general program setup for the Reset and Interrupt Vector Addresses in ATA6612 is:
Address Labels Code
Comments
0x000 RESET: ldi r16,high(RAMEND); Main program start
0x001
out SPH,r16
; Set Stack Pointer to top of RAM
0x002
ldi r16,low(RAMEND)
0x003
0x004
out SPL,r16
sei
; Enable interrupts
0x005
<instr> xxx
;
.org 0xC01
0xC01
rjmp EXT_INT0
; IRQ0 Handler
0xC02
rjmp EXT_INT1
; IRQ1 Handler
...
... ...
;
0xC19
rjmp SPM_RDY
; Store Program Memory Ready Handler
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 ATA6612 is:
Address Labels Code
Comments
.org 0x001
0x001
rjmp EXT_INT0
; IRQ0 Handler
0x002
rjmp EXT_INT1
; IRQ1 Handler
...
... ...
;
0x019
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
0xC04
out SPL,r16
sei
; Enable interrupts
0xC05
<instr> xxx
82 ATA6612/ATA6613
9111G–AUTO–05/10