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参数资料
型号： MB9AF314NBGL
元件分类： 微控制器/微处理器
英文描述： 32-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PBGA112
封装： 0.80 MM PITCH, PLASTIC, FBGA-112
文件页数： 61/114页
文件大小： 1357K
代理商： MB9AF314NBGL
ATmega48PA/88PA/168PA [DATASHEET]
9223F–AVR–04/14
50
12.
Interrupts
This section describes the specifics of the interrupt handling as performed in the Atmel ATmega48PA/88PA/168PA. For a
general explanation of the AVR interrupt handling, refer to Section 7.7 “Reset and Interrupt Handling” on page 14.
The interrupt vectors in the Atmel ATmega48PA, Atmel ATmega88PA, and ATmega168PA are generally the same, with the
following differences:
●
Each interrupt vector occupies two instruction words in Atmel ATmega168PA and one instruction word in the Atmel
ATmega48PA and Atmel ATmega88PA.
●
Atmel ATmega48PA does not have a separate boot loader section. In the Atmel ATmega88PA, and Atmel
ATmega168PA, the reset vector is affected by the BOOTRST fuse, and the interrupt vector start address is affected
by the IVSEL bit in MCUCR.
12.1
Interrupt Vectors in Atmel ATmega48PA
Table 12-1. Reset and Interrupt Vectors in ATmega48PA
Vector No. Program Address Source
Interrupt Definition
1
0x000
RESET
External pin, power-on reset, brown-out reset and watchdog system
reset
2
0x001
INT0
External interrupt request 0
3
0x002
INT1
External interrupt request 1
4
0x003
PCINT0
Pin change interrupt request 0
5
0x004
PCINT1
Pin change interrupt request 1
6
0x005
PCINT2
Pin change interrupt request 2
7
0x006
WDT
Watchdog time-out interrupt
8
0x007
TIMER2 COMPA Timer/Counter2 compare match A
9
0x008
TIMER2 COMPB Timer/Counter2 compare match B
10
0x009
TIMER2 OVF
Timer/Counter2 overflow
11
0x00A
TIMER1 CAPT
Timer/Counter1 capture event
12
0x00B
TIMER1 COMPA Timer/Counter1 compare match A
13
0x00C
TIMER1 COMPB Timer/coutner1 compare match B
14
0x00D
TIMER1 OVF
Timer/Counter1 overflow
15
0x00E
TIMER0 COMPA Timer/Counter0 compare match A
16
0x00F
TIMER0 COMPB Timer/Counter0 compare match B
17
0x010
TIMER0 OVF
Timer/Counter0 overflow
18
0x011
SPI, STC
SPI serial transfer complete
19
0x012
USART, RX
USART Rx complete
20
0x013
USART, UDRE
USART, data register empty
21
0x014
USART, TX
USART, Tx complete
22
0x015
ADC
ADC conversion complete
23
0x016
EE READY
EEPROM ready
24
0x017
ANALOG COMP
Analog comparator
25
0x018
TWI
2-wire serial interface
26
0x019
SPM READY
Store program memory ready
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