參數(shù)資料
型號(hào): MC68HC05C8AFBE
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁數(shù): 42/116頁
文件大小: 781K
代理商: MC68HC05C8AFBE
External Interrupt (IRQ)
MC68HC05C8A MC68HCL05C8A MC68HSC05C8A Data Sheet, Rev. 5.1
Freescale Semiconductor
31
Figure 4-1. Interrupt Flowchart
INTERNAL
TIMER
INTERRUPT
?
INTERNAL
SCI
INTERRUPT
?
N
RESTORE REGISTERS
FROM STACK:
CCR, A, X, PC
IRQ
EXTERNAL
INTERRUPT
?
LOAD PC FROM:
SWI: $1FFC-$1FFD
IRQ: $1FFA-$1FFB
TIMER: $1FF8-$1FF9
SCI: $1FF6-$1FF7
SET I BIT IN
CC REGISTER
STACK
PC, X, A, CCR
CLEAR IRQ
REQUEST LATCH
FETCH NEXT
INSTRUCTION
EXECUTE
INSTRUCTION
N
Y
N
I BIT
IN CCR SET?
INTERNAL
SPI
INTERRUPT
?
SWI
INSTRUCTION
?
N
Y
RTI
INSTRUCTION
?
Y
FROM
RESET
N
Y
N
Y
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