參數(shù)資料
型號: MC68HC05J1AP
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP20
封裝: PLASTIC, DIP-20
文件頁數(shù): 72/128頁
文件大小: 1279K
代理商: MC68HC05J1AP
Technical Data
MC68HC05J1A — Rev. 3.0
48
Interrupts
MOTOROLA
Interrupts
Figure 4-4 shows the sequence of events caused by an interrupt.
Figure 4-4. Interrupt Flowchart
EXTERNAL
INTERRUPT?
I BIT SET?
FROM
RESET
TIMER
INTERRUPT?
FETCH NEXT
INSTRUCTION
SWI
INSTRUCTION?
RTI
INSTRUCTION?
STACK PCL, PCH, X, A, CCR
SET I BIT
LOAD PC WITH INTERRUPT VECTOR
YES
UNSTACK CCR, A, X, PCH, PCL
EXECUTE INSTRUCTION
CLEAR IRQ LATCH
NO
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