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PIC16LC71 датащи(PDF) 118 Page - Microchip Technology |
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PIC16LC71 датащи(HTML) 118 Page - Microchip Technology |
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118 / 176 page ![]() PIC16C71X DS30272A-page 118 © 1997 Microchip Technology Inc. Applicable Devices 710 71 711 715 13.5 Timing Diagrams and Specifications FIGURE 13-2: EXTERNAL CLOCK TIMING TABLE 13-2: CLOCK TIMING REQUIREMENTS Parameter No. Sym Characteristic Min Typ† Max Units Conditions Fos External CLKIN Frequency (Note 1) DC — 4 MHz XT osc mode DC — 4 MHz HS osc mode (PIC16C715-04) DC — 20 MHz HS osc mode (PIC16C715-20) DC — 200 kHz LP osc mode Oscillator Frequency (Note 1) DC — 4 MHz RC osc mode 0.1 — 4 MHz XT osc mode 4 — 4 MHz HS osc mode (PIC16C715-04) 4 4 5 — — — 10 20 200 MHz MHz kHz HS osc mode (PIC16C715-10) HS osc mode (PIC16C715-20) LP osc mode 1 Tosc External CLKIN Period (Note 1) 250 — — ns XT osc mode 250 — — ns HS osc mode (PIC16C715-04) 100 — — ns HS osc mode (PIC16C715-10) 50 — — ns HS osc mode (PIC16C715-20) 5 — — µs LP osc mode Oscillator Period (Note 1) 250 — — ns RC osc mode 250 — 10,000 ns XT osc mode 250 — 250 ns HS osc mode (PIC16C715-04) 100 50 — — 250 250 ns ns HS osc mode (PIC16C715-10) HS osc mode (PIC16C715-20) 5 — — µs LP osc mode 2 TCY Instruction Cycle Time (Note 1) 200 — 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 PIC16C715. OSC1 CLKOUT Q4 Q1 Q2 Q3 Q4 Q1 1 2 3 3 4 4 |
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