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CF745 数据表(PDF) 99 Page - Microchip Technology |
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CF745 数据表(HTML) 99 Page - Microchip Technology |
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99 / 217 page  © 1998 Microchip Technology Inc. Preliminary DS30453B-page 99 PIC16CR54A PIC16C5X FIGURE 13-3: CLKOUT AND I/O TIMING - PIC16CR54A TABLE 13-3: CLKOUT AND I/O TIMING REQUIREMENTS - PIC16CR54A AC Characteristics Standard Operating Conditions (unless otherwise specified) Operating Temperature 0 °C ≤ TA ≤ +70°C (commercial) –40 °C ≤ TA ≤ +85°C (industrial) –40 °C ≤ TA ≤ +125°C (extended) Operating Voltage VDD range is described in Section 13.1, Section 13.2 and Section 13.3. Parameter No. Sym Characteristic Min Typ (1) Max Units 10 TosH2ckL OSC1 ↑ to CLKOUT↓(2) — 15 30** ns 11 TosH2ckH OSC1 ↑ to CLKOUT↑(2) — 15 30** ns 12 TckR CLKOUT rise time (2) — 5.0 15** ns 13 TckF CLKOUT fall time (2) — 5.0 15** ns 14 TckL2ioV CLKOUT ↓ to Port out valid(2) — — 40** ns 15 TioV2ckH Port in valid before CLKOUT ↑(2) 0.25 TCY +30* — — ns 16 TckH2ioI Port in hold after CLKOUT ↑(2) 0* — — ns 17 TosH2ioV OSC1 ↑ (Q1 cycle) to Port out valid(3) — — 100* ns 18 TosH2ioI OSC1 ↑ (Q2 cycle) to Port input invalid (I/O in hold time) TBD — — ns 19 TioV2osH Port input valid to OSC1 ↑ (I/O in setup time) TBD — — ns 20 TioR Port output rise time (3) — 10 25** ns 21 TioF Port output fall time (3) — 10 25** ns * These parameters are characterized but not tested. ** These parameters are design targets and are not tested. No characterization data available at this time. Note 1: Data in the Typical (“Typ”) column is at 5.0V, 25 °C unless otherwise stated. These parameters are for design guidance only and are not tested. 2: Measurements are taken in RC Mode where CLKOUT output is 4 x TOSC. 3: See Figure 13-1 for loading conditions. OSC1 CLKOUT I/O Pin (input) I/O Pin (output) Q4 Q1 Q2 Q3 10 14 17 20, 21 18 15 11 16 Old Value New Value Note: All tests must be done with specified capacitive loads (see data sheet) 50 pF on I/O pins and CLKOUT. 19 12 13 |
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