参数资料
型号: ST72T774S9T1
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP44
封装: TQFP-44
文件页数: 61/144页
文件大小: 1280K
代理商: ST72T774S9T1
ST72774/ST727754/ST72734
23/144
INTERRUPTS (Cont’d)
Figure 13. 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
I BIT SET?
N
Y
IRET?
FETCH NEXT INSTRUCTION
Y
N
THIS CLEARS I BIT BY DEFAULT
VR01172D
TRAP?
N
Y
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