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41594B 数据表(PDF) 81 Page - Microchip Technology |
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41594B 数据表(HTML) 81 Page - Microchip Technology |
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81 / 372 page  2011-2012 Microchip Technology Inc. Preliminary DS41594B-page 81 PIC12LF1840T48A FIGURE 8-4: 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 31.0 “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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