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参数资料
型号： MB9AF312NPMC
元件分类： 微控制器/微处理器
英文描述： 32-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PQFP100
封装： 0.50 MM PITCH, PLASTIC, LQFP-100
文件页数： 64/114页
文件大小： 1357K
代理商： MB9AF312NPMC
53
ATmega48PA/88PA/168PA [DATASHEET]
9223F–AVR–04/14
Table 12-3 shows reset and interrupt vectors placement for the various combinations of BOOTRST and IVSEL settings. If the
program never enables an interrupt source, the interrupt vectors are not used, and regular program code can be placed at
these locations. This is also the case if the reset vector is in the application section while the interrupt vectors are in the boot
section or vice versa.
The most typical and general program setup for the reset and interrupt vector addresses in the Atmel ATmega88PA is:
AddressLabels
Code
Comments
0x000
rjmp
RESET
; Reset Handler
0x001
rjmp
EXT_INT0
; IRQ0 Handler
0x002
rjmp
EXT_INT1
; IRQ1 Handler
0x003
rjmp
PCINT0
; PCINT0 Handler
0x004
rjmp
PCINT1
; PCINT1 Handler
0x005
rjmp
PCINT2
; PCINT2 Handler
0x006
rjmp
WDT
; Watchdog Timer Handler
0x007
rjmp
TIM2_COMPA
; Timer2 Compare A Handler
0X008
rjmp
TIM2_COMPB
; Timer2 Compare B Handler
0x009
rjmp
TIM2_OVF
; Timer2 Overflow Handler
0x00A
rjmp
TIM1_CAPT
; Timer1 Capture Handler
0x00B
rjmp
TIM1_COMPA
; Timer1 Compare A Handler
0x00C
rjmp
TIM1_COMPB
; Timer1 Compare B Handler
0x00D
rjmp
TIM1_OVF
; Timer1 Overflow Handler
0x00E
rjmp
TIM0_COMPA
; Timer0 Compare A Handler
0x00F
rjmp
TIM0_COMPB
; Timer0 Compare B Handler
0x010
rjmp
TIM0_OVF
; Timer0 Overflow Handler
0x011
rjmp
SPI_STC
; SPI Transfer Complete Handler
0x012
rjmp
USART_RXC
; USART, RX Complete Handler
0x013
rjmp
USART_UDRE
; USART, UDR Empty Handler
0x014
rjmp
USART_TXC
; USART, TX Complete Handler
0x015
rjmp
ADC
; ADC Conversion Complete Handler
0x016
rjmp
EE_RDY
; EEPROM Ready Handler
0x017
rjmp
ANA_COMP
; Analog Comparator Handler
0x018
rjmp
TWI
; 2-wire Serial Interface Handler
0x019
rjmp
SPM_RDY
; Store Program Memory Ready Handler
0x01A
RESET:
ldi
r16, high(RAMEND); Main program start
0x01B
out
SPH,r16
; Set Stack Pointer to top of RAM
0x01C
ldi
r16, low(RAMEND)
0x01D
out
SPL,r16
0x01E
sei
; Enable interrupts
0x01F
<instr> xxx
Table 12-3. Reset and Interrupt Vectors Placement in the Atmel ATmega88PA(1)
BOOTRST
IVSEL
Reset Address
Interrupt Vectors Start Address
1
0
0x000
0x001
1
0x000
Boot reset address + 0x001
0
Boot reset address
0x001
0
1
Boot reset address
Boot reset address + 0x001
Note:
1.
The Boot reset address is shown in Table 27-7 on page 247. For the BOOTRST fuse “1” means unpro-
grammed while “0” means programmed.
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