ATMEGA8515L8AU

Manufacturer Part NumberATMEGA8515L8AU
DescriptionTQFP44
ManufacturerATMEL Corporation
ATMEGA8515L8AU datasheet
 

Specifications of ATMEGA8515L8AU

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Page 56/257

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ATmega8515(L)
56
When the BOOTRST Fuse is unprogrammed, the Boot section size set to 2K bytes 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
$000
RESET:
ldi
r16,high(RAMEND); Main program start
$001
out
SPH,r16
$002
ldi
r16,low(RAMEND)
$003
out
SPL,r16
$004
sei
$005
<instr>
;
.org $C02
$C02
rjmp EXT_INT0
$C04
rjmp EXT_INT1
...
....
..
$C2A
rjmp SPM_RDY
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 is:
Address Labels
Code
.org $002
$001
rjmp EXT_INT0
$002
rjmp EXT_INT1
...
....
..
$010
rjmp SPM_RDY
Handler
;
.org $C00
$C00
RESET:
ldi
r16,high(RAMEND); Main program start
$C01
out
SPH,r16
$C02
ldi
r16,low(RAMEND)
$C03
out
SPL,r16
$C04
sei
$C05
<instr>
When the BOOTRST Fuse is programmed, the Boot section size set to 2K bytes 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
.org $C00
$C00
rjmp RESET
$C01
rjmp EXT_INT0
$C02
rjmp EXT_INT1
...
....
..
$C10
rjmp SPM_RDY
Handler
;
$C11
RESET:
ldi
r16,high(RAMEND); Main program start
Comments
; Set Stack Pointer to top of RAM
; Enable interrupts
xxx
; IRQ0 Handler
; IRQ1 Handler
;
; Store Program memory Ready
Comments
; IRQ0 Handler
; IRQ1 Handler
;
; Store Program memory Ready
; Set Stack Pointer to top of RAM
; Enable interrupts
xxx
Comments
; Reset handler
; IRQ0 Handler
; IRQ1 Handler
;
; Store Program memory Ready
2512J–AVR–10/06