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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC16F684 датащи(PDF) 143 Page - Microchip Technology |
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PIC16F684 датащи(HTML) 143 Page - Microchip Technology |
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143 / 192 page  © 2007 Microchip Technology Inc. DS41202F-page 141 PIC16F684 FIGURE 15-5: CLKOUT AND I/O TIMING Fosc CLKOUT I/O pin (Input) I/O pin (Output) Q4 Q1 Q2 Q3 OS11 OS19 OS13 OS15 OS18, OS19 OS20 OS21 OS17 OS16 OS14 OS12 OS18 Old Value New Value Write Fetch Read Execute Cycle TABLE 15-3: CLKOUT AND I/O TIMING PARAMETERS Standard Operating Conditions (unless otherwise stated) Operating Temperature -40°C ≤ TA ≤ +125°C Param No. Sym Characteristic Min Typ† Max Units Conditions OS11 TOSH2CKLFOSC ↑ to CLKOUT↓ (1) — — 70 ns VDD = 5.0V OS12 TOSH2CKHFOSC ↑ to CLKOUT↑ (1) — — 72 ns VDD = 5.0V OS13 TCKL2IOVCLKOUT ↓ to Port out valid(1) — — 20 ns OS14 TIOV2CKH Port input valid before CLKOUT ↑(1) TOSC + 200 ns — — ns OS15 TOSH2IOVFOSC ↑ (Q1 cycle) to Port out valid — 50 70* ns VDD = 5.0V OS16 TOSH2IOIFOSC ↑ (Q2 cycle) to Port input invalid (I/O in hold time) 50 — — ns VDD = 5.0V OS17 TIOV2OSH Port input valid to FOSC ↑ (Q2 cycle) (I/O in setup time) 20 — — ns OS18 TIOR Port output rise time(2) — — 15 40 72 32 ns VDD = 2.0V VDD = 5.0V OS19 TIOF Port output fall time(2) — — 28 15 55 30 ns VDD = 2.0V VDD = 5.0V OS20* TINP INT pin input high or low time 25 — — ns OS21* TRAP PORTA interrupt-on-change new input level time TCY —— ns * These parameters are characterized but not tested. † Data in ‘Typ’ column is at 5.0V, 25 °C unless otherwise stated. Note 1: Measurements are taken in RC mode where CLKOUT output is 4 x TOSC. 2: Includes OSC2 in CLKOUT mode. |
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