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68HC705SP7 数据表(PDF) 49 Page - Freescale Semiconductor, Inc |
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68HC705SP7 数据表(HTML) 49 Page - Freescale Semiconductor, Inc |
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49 / 230 page ![]() Interrupts Interrupt Processing MC68HC705JJ7/MC68HC705JP7 — Rev. 3.0 General Release Specification Interrupts Figure 4-2. Interrupt Flowchart NO EXTERNAL INTERRUPT? I BIT SET? FROM RESET YES YES CLEAR IRQ LATCH. NO EXECUTE INSTRUCTION. UNSTACK CCR, A, X, PCH, PCL. FETCH NEXT INSTRUCTION. STACK PCL, PCH, X, A, CCR. SET I BIT. LOAD PC WITH INTERRUPT VECTOR. CORE TIMER INTERRUPT? YES NO TIMER INTERRUPT? YES NO SERIAL INTERRUPT? YES NO ANALOG INTERRUPT? YES NO SWI INSTRUCTION? YES NO RTI INSTRUCTION? YES NO Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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