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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC16F631 датащи(PDF) 240 Page - Microchip Technology |
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PIC16F631 датащи(HTML) 240 Page - Microchip Technology |
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240 / 294 page  PIC16F631/677/685/687/689/690 DS41262D-page 238 © 2007 Microchip Technology Inc. 17.7 AC Characteristics: PIC16F631/677/685/687/689/690 (Industrial, Extended) FIGURE 17-4: CLOCK TIMING TABLE 17-1: CLOCK OSCILLATOR TIMING REQUIREMENTS Standard Operating Conditions (unless otherwise stated) Operating temperature -40°C ≤ TA ≤ +125°C Param No. Sym Characteristic Min Typ† Max Units Conditions OS01 FOSC External CLKIN Frequency(1) DC — 37 kHz LP Oscillator mode DC — 4 MHz XT Oscillator mode DC — 20 MHz HS Oscillator mode DC — 20 MHz EC Oscillator mode Oscillator Frequency(1) — 32.768 — kHz LP Oscillator mode 0.1 — 4 MHz XT Oscillator mode 1 — 20 MHz HS Oscillator mode DC — 4 MHz RC Oscillator mode OS02 TOSC External CLKIN Period(1) 27 — ∞μs LP Oscillator mode 250 — ∞ ns XT Oscillator mode 50 — ∞ ns HS Oscillator mode 50 — ∞ ns EC Oscillator mode Oscillator Period(1) — 30.5 — μs LP Oscillator mode 250 — 10,000 ns XT Oscillator mode 50 — 1,000 ns HS Oscillator mode 250 — — ns RC Oscillator mode OS03 TCY Instruction Cycle Time(1) 200 TCY DC ns TCY = 4/FOSC OS04* TOSH, TOSL External CLKIN High, External CLKIN Low 2— — μs LP oscillator 100 — — ns XT oscillator 20 — — ns HS oscillator OS05* TOSR, TOSF External CLKIN Rise, External CLKIN Fall 0— ∞ ns LP oscillator 0— ∞ ns XT oscillator 0— ∞ ns HS oscillator * These parameters are characterized but not tested. † 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 OSC1 pin. When an external clock input is used, the ‘max’ cycle time limit is ‘DC’ (no clock) for all devices. OSC1/CLKIN OSC2/CLKOUT Q4 Q1 Q2 Q3 Q4 Q1 OS02 OS03 OS04 OS04 OSC2/CLKOUT (LP,XT,HS Modes) (CLKOUT Mode) |
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