參數(shù)資料
型號(hào): MC68HC05P18MDW
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, PDSO28
封裝: SOIC-28
文件頁數(shù): 84/144頁
文件大?。?/td> 1348K
代理商: MC68HC05P18MDW
Advance Information
MC68HC(8)05P18 — Rev. 2.0
44
Interrupts
MOTOROLA
Interrupts
Figure 4-1. Interrupt Processing Flowchart
IS I BIT
SET?
FROM RESET
LOAD PC FROM:
SWI: $3FFC, $3FFD
IRQ: $3FFA–$3FFB
TIMER: $3FF8–$3FF9
SET
I BIT IN CCR
STACK
PC, X, A, CC
CLEAR IRQ
REQUEST
LATCH
RESTORE RESISTERS
FROM STACK
CC, A, X, PC
Y
N
EXECUTE INSTRUCTION
FETCH NEXT
INSTRUCTION
IRQ
INTERRUPT?
Y
N
TIMER
INTERRUPT?
Y
N
SWI
INSTRUCTION?
Y
N
RTI
INSTRUCTION?
Y
N
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