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PIC16 Datasheet(PDF) 337 Page - Microchip Technology |
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PIC16 Datasheet(HTML) 337 Page - Microchip Technology |
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337 / 418 page  2011-2013 Microchip Technology Inc. DS40001609C-page 337 PIC16(L)F1508/9 FIGURE 29-5: CLOCK TIMING TABLE 29-7: CLOCK OSCILLATOR TIMING REQUIREMENTS Standard Operating Conditions (unless otherwise stated) Param. No. Sym. Characteristic Min. Typ† Max. Units Conditions OS01 FOSC External CLKIN Frequency(1) DC — 0.5 MHz External Clock (ECL) DC — 4 MHz External Clock (ECM) DC — 20 MHz External Clock (ECH) Oscillator Frequency(1) — 32.768 — kHz LP Oscillator 0.1 — 4 MHz XT Oscillator 1 — 4 MHz HS Oscillator 1 — 20 MHz HS Oscillator, VDD > 2.7V DC — 4 MHz EXTRC, VDD > 2.0V OS02 TOSC External CLKIN Period(1) 27 — µs LP Oscillator 250 — ns XT Oscillator 50 — ns HS Oscillator 50 — ns External Clock (EC) Oscillator Period(1) — 30.5 — µs LP Oscillator 250 — 10,000 ns XT Oscillator 50 — 1,000 ns HS Oscillator 250 — — ns EXTRC 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 3.0V, 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 CLKIN pin. When an external clock input is used, the “max” cycle time limit is “DC” (no clock) for all devices. CLKIN CLKOUT Q4 Q1 Q2 Q3 Q4 Q1 OS02 OS03 (CLKOUT mode) Note 1: See Table 29-9. OS11 OS12 |
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