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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC12CE67X датащи(PDF) 90 Page - Microchip Technology |
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PIC12CE67X датащи(HTML) 90 Page - Microchip Technology |
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90 / 116 page  PIC12CE67X DS40181B-page 90 Preliminary © 1998 Microchip Technology Inc. 12.6 Timing Diagrams and Specifications FIGURE 12-2: EXTERNAL CLOCK TIMING TABLE 12-2: CLOCK TIMING REQUIREMENTS Parameter No. Sym Characteristic Min Typ† Max Units Conditions Fosc External CLKIN Frequency (Note 1) DC — 4 MHz XT and EXTRC osc mode DC — 4 MHz HS osc mode (PIC12CE67X-04) DC — 10 MHz HS osc mode (PIC12CE67X-10) DC — 200 kHz LP osc mode Oscillator Frequency (Note 1) DC — 4 MHz EXTRC osc mode .455 — 4 MHz XT osc mode 4 — 4 MHz HS osc mode (PIC12CE67X-04) 4 — 10 MHz HS osc mode (PIC12CE67X-10) 5 — 200 kHz LP osc mode 1 Tosc External CLKIN Period (Note 1) 250 — — ns XT and EXTRC osc mode 250 — — ns HS osc mode (PIC12CE67X-04) 100 — — ns HS osc mode (PIC12CE67X-10) 5 — — µs LP osc mode Oscillator Period (Note 1) 250 — — ns EXTRC osc mode 250 — 10,000 ns XT osc mode 250 — 250 ns HS osc mode (PIC12CE67X-04) 100 — 250 ns HS osc mode (PIC12CE67X-10) 5 — — µs LP osc mode 2 TCY Instruction Cycle Time (Note 1) 400 — DC ns TCY = 4/FOSC 3 TosL, TosH External Clock in (OSC1) High or Low Time 50 — — ns XT oscillator 2.5 — — µs LP oscillator 10 — — ns HS oscillator 4 TosR, TosF External Clock in (OSC1) Rise or Fall Time — — 25 ns XT oscillator — — 50 ns LP oscillator — — 15 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 con- sumption. 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. OSC2 is disconnected (has no loading) for the PIC12CE67X. OSC1 CLKOUT Q4 Q1 Q2 Q3 Q4 Q1 1 2 3 3 4 4 |
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