參數(shù)資料
型號(hào): ST72121J2T3/XXX
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP44
封裝: PLASTIC, TQFP-44
文件頁數(shù): 10/87頁
文件大小: 1365K
代理商: ST72121J2T3/XXX
18/87
ST72121
INTERRUPTS (Cont’d)
Figure 14. Interrupt Processing Flowchart
FROM RESET
EXECUTE INSTRUCTION
STACK PC, X, A, CC
SET I BIT
LOAD PC FROM INTERRUPT VECTOR
RESTORE PC, X, A, CC FROM STACK
INTERRUPT
N
Y
BIT I SET
N
Y
IRET
FETCH NEXT INSTRUCTION
Y
N
THIS CLEARS I BIT BY DEFAULT
VR01172D
18
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