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16F1827 数据表(PDF) 84 Page - Microchip Technology |
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16F1827 数据表(HTML) 84 Page - Microchip Technology |
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84 / 406 page  PIC16(L)F1826/27 DS41391D-page 84 2011 Microchip Technology Inc. FIGURE 8-3: INT PIN INTERRUPT TIMING Q2 Q1 Q3 Q4 Q2 Q1 Q3 Q4 Q2 Q1 Q3 Q4 Q2 Q1 Q3 Q4 Q2 Q1 Q3 Q4 OSC1 CLKOUT INT pin INTF GIE INSTRUCTION FLOW PC Instruction Fetched Instruction Executed Interrupt Latency PC PC + 1 PC + 1 0004h 0005h Inst (0004h) Inst (0005h) Dummy Cycle Inst (PC) Inst (PC + 1) Inst (PC – 1) Inst (0004h) Dummy Cycle Inst (PC) — Note 1: INTF flag is sampled here (every Q1). 2: Asynchronous interrupt latency = 3-5 TCY. Synchronous latency = 3-4 TCY, where TCY = instruction cycle time. Latency is the same whether Inst (PC) is a single cycle or a 2-cycle instruction. 3: CLKOUT not available in all Oscillator modes. 4: For minimum width of INT pulse, refer to AC specifications in Section 30.0 “Electrical Specifications””. 5: INTF is enabled to be set any time during the Q4-Q1 cycles. (1) (2) (3) (4) (5) (1) |
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