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PIC18F010 Datasheet(PDF) 154 Page - Microchip Technology |
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PIC18F010 Datasheet(HTML) 154 Page - Microchip Technology |
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154 / 176 page  PIC18F010/020 DS41142A-page 152 Preliminary 2001 Microchip Technology Inc. 15.4.2 TIMING DIAGRAMS AND SPECIFICATIONS FIGURE 15-6: EXTERNAL CLOCK TIMING TABLE 15-3: EXTERNAL CLOCK TIMING REQUIREMENTS Param. No. Sym Characteristic Min Typ† Max Units Conditions FOSC External CLKIN Frequency (Note 1) DC — 4 MHz RC osc mode DC — 4MHz XT osc mode DC — 25 MHz HS osc mode DC — 40 MHz EC osc mode DC — 200 kHz LP osc mode Oscillator Frequency (Note 1) DC — 4 MHz RC osc mode 0.1 — 4MHz XT osc mode 4 — 25 MHz HS osc mode 4 — 8.25 MHz HS osc mode 5 — 200 kHz LP osc mode 1TOSC External CLKIN Period (Note 1) 250 —— ns RC osc mode 100 —— ns XT osc mode 40 —— ns HS osc mode 120 —— ns HS osc mode 30 —— ns EC osc mode 5 —— µsLP osc mode Oscillator Period (Note 1) 250 —— ns RC osc mode 0.1 — 10 µsXT osc mode 40 — 100 ns HS osc mode 120 — 100 ns HS osc mode 5 —— µsLP osc mode 2TCY Instruction Cycle Time (Note 1) 100 Tcy DC ns TCY = 4/System Clock, 40 MHz max 3 TosL, TosH External Clock in (OSC1) High or Low Time 30 —— ns XT oscillator 2.5 —— µs LP oscillator 10 —— ns HS oscillator 4TosR, TosF External Clock in (OSC1) Rise or Fall Time — — 20 ns XT oscillator — — 50 ns LP oscillator —— 7.5 ns HS oscillator † Data in "Typ" column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only and are not tested. Note 1: Instruction cycle period (TCY) equals four times the input oscillator time-base period. All specified values are based on characterization data for that particular oscillator type under standard operating conditions with the device executing code. Exceeding these specified limits may result in an unstable oscillator operation and/or higher than expected current consumption. All devices are tested to operate at "min." values with an external clock applied to the OSC1/CLKIN pin. When an external clock input is used, the "max." cycle time limit is "DC" (no clock) for all devices. OSC1 CLKOUT Q4 Q1 Q2 Q3 Q4 Q1 1 2 3 3 4 4 |
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