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PIC16F753 数据表(PDF) 188 Page - Microchip Technology |
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PIC16F753 数据表(HTML) 188 Page - Microchip Technology |
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188 / 230 page  PIC16F753/HV753 DS40001709C-page 188 2013-2015 Microchip Technology Inc. FIGURE 22-5: CLKOUT AND I/O TIMING FOSC CLKOUT I/O pin (Input) I/O pin (Output) Q4 Q1 Q2 Q3 OS19 OS13 OS15 OS18, OS19 OS20 OS21 OS17 OS16 OS14 OS18 Old Value New Value Write Fetch Read Execute Cycle TABLE 22-10: CLKOUT AND I/O TIMING PARAMETERS Standard Operating Conditions (unless otherwise stated) Param No. Sym. Characteristic Min. Typ† Max. Units Conditions 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 setup 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 — — 40 15 72 32 ns ns VDD = 2.0V VDD = 5.0V OS19* TIOF Port output fall time — — 28 15 55 30 ns ns VDD = 2.0V VDD = 5.0V OS20* TINP INT pin input high or low time 25 — — ns OS21* TIOC 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. |
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