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ATMEGA16-16MC Datasheet(PDF) 43 Page - ATMEL Corporation

Part No. ATMEGA16-16MC
Description  8-bit AVR Microcontroller with 16K Bytes In-System Programmable Flash
Download  315 Pages
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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ATMEGA16-16MC Datasheet(HTML) 43 Page - ATMEL Corporation

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43
ATmega16(L)
2466E–AVR–10/02
Note:
1. The Boot Reset Address is shown in Table 99 on page 252. 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 ATmega16 is:
Address
Labels
Code
Comments
$000
jmp
RESET
; Reset Handler
$002
jmp
EXT_INT0
; IRQ0 Handler
$004
jmp
EXT_INT1
; IRQ1 Handler
$006
jmp
TIM2_COMP
; Timer2 Compare Handler
$008
jmp
TIM2_OVF
; Timer2 Overflow Handler
$00A
jmp
TIM1_CAPT
; Timer1 Capture Handler
$00C
jmp
TIM1_COMPA
; Timer1 CompareA Handler
$00E
jmp
TIM1_COMPB
; Timer1 CompareB Handler
$010
jmp
TIM1_OVF
; Timer1 Overflow Handler
$012
jmp
TIM0_OVF
; Timer0 Overflow Handler
$014
jmp
SPI_STC
; SPI Transfer Complete Handler
$016
jmp
USART_RXC
; USART RX Complete Handler
$018
jmp
USART_UDRE
; UDR Empty Handler
$01A
jmp
USART_TXC
; USART TX Complete Handler
$01C
jmp
ADC
; ADC Conversion Complete Handler
$01E
jmp
EE_RDY
; EEPROM Ready Handler
$020
jmp
ANA_COMP
; Analog Comparator Handler
$022
jmp
TWSI
; Two-wire Serial Interface Handler
$024
jmp
EXT_INT2
; IRQ2 Handler
$026
jmp
TIM0_COMP
; Timer0 Compare Handler
$028
jmp
SPM_RDY
; Store Program Memory Ready Handler
;
$02A
RESET:
ldi
r16,high(RAMEND) ; Main program start
$02B
out
SPH,r16
; Set stack pointer to top of RAM
$02C
ldi
r16,low(RAMEND)
$02D
out
SPL,r16
$02E
sei
; Enable interrupts
$02F
<instr>
xxx
...
...
...
Table 19. Reset and Interrupt Vectors Placement(1)
BOOTRST
IVSEL
Reset address
Interrupt Vectors Start Address
1
0
$0000
$0002
1
1
$0000
Boot Reset Address + $0002
0
0
Boot Reset Address
$0002
0
1
Boot Reset Address
Boot Reset Address + $0002


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