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MC68HC705P9CS Fiches technique(PDF) 77 Page - Freescale Semiconductor, Inc |
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MC68HC705P9CS Fiches technique(HTML) 77 Page - Freescale Semiconductor, Inc |
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77 / 160 page ![]() Low Power Modes Stop Mode MC68HC705P9 — Rev. 4.0 Technical Data MOTOROLA Low Power Modes 77 Figure 6-2 shows the sequence of events caused by the STOP instruction. Figure 6-2. STOP Instruction Flowchart STOP CLEAR I BIT IN CCR RESET? YES TURN ON OSCILLATOR EXTERNAL NO (1) LOAD PC WITH RESET VECTOR OR (2) SERVICE INTERRUPT a. SAVE CPU REGISTERS ON STACK b. SET I BIT IN CCR c. LOAD PC WITH INTERRUPT VECTOR DELAY 4064 CYCLES TO STABILIZE INTERRUPT? CLEAR TIMER INTERRUPT FLAGS AND TIMER INTERRUPT ENABLE BITS CLEAR TIMER PRESCALER TURN OFF OSCILLATOR YES NO Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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