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PIC18F258-E/LSQTP Datasheet(PDF) 277 Page - Microchip Technology |
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PIC18F258-E/LSQTP Datasheet(HTML) 277 Page - Microchip Technology |
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277 / 402 page  © 2006 Microchip Technology Inc. DS41159E-page 275 PIC18FXX8 FIGURE 24-2: WAKE-UP FROM SLEEP THROUGH INTERRUPT(1,2) Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 OSC1 CLKO(4) INT pin INTF Flag (INTCON<1>) GIEH bit (INTCON<7>) INSTRUCTION FLOW PC Instruction Fetched Instruction Executed PC PC + 2 PC + 4 Inst(PC) = Sleep Inst(PC – 1) Inst(PC + 2) Sleep Processor in Sleep Interrupt Latency(3) Inst(PC + 4) Inst(PC + 2) Inst(0008h) Inst(000Ah) Inst(0008h) Dummy Cycle PC + 4 0008h 000Ah Dummy Cycle TOST(2) PC + 4 Note 1: XT, HS or LP Oscillator mode assumed. 2: GIE = 1 assumed. In this case, after wake-up, the processor jumps to the interrupt routine. If GIE = 0, execution will continue in-line. 3: TOST = 1024 TOSC (drawing not to scale). This delay will not occur for RC and EC Oscillator modes. 4: CLKO is not available in these oscillator modes but shown here for timing reference. |
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