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PIC16C71 датащи(PDF) 236 Page - Microchip Technology |
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PIC16C71 датащи(HTML) 236 Page - Microchip Technology |
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236 / 337 page ![]() PIC16C6X DS30234D-page 236 © 1997 Microchip Technology Inc. Applicable Devices 61 62 62A R62 63 R63 64 64A R64 65 65A R65 66 67 21.4 Timing Parameter Symbology The timing parameter symbols have been created following one of the following formats: FIGURE 21-1: LOAD CONDITIONS FOR DEVICE TIMING SPECIFICATIONS 1. TppS2ppS 3. TCC:ST (I2C specifications only) 2. TppS 4. Ts (I2C specifications only) T F Frequency T Time Lowercase letters (pp) and their meanings: pp cc CCP1 osc OSC1 ck CLKOUT rd RD cs CS rw RD or WR di SDI sc SCK do SDO ss SS dt Data in t0 T0CKI io I/O port t1 T1CKI mc MCLR wr WR Uppercase letters and their meanings: S F Fall P Period H High R Rise I Invalid (Hi-impedance) V Valid L Low Z Hi-impedance I2C only AA output access High High BUF Bus free Low Low TCC:ST (I2C specifications only) CC HD Hold SU Setup ST DAT DATA input hold STO STOP condition STA START condition VDD/2 CL RL Pin Pin VSS VSS CL RL = 464 Ω CL = 50 pF for all pins except OSC2/CLKOUT but including D and E outputs as ports 15 pF for OSC2 output Load condition 1 Load condition 2 Note 1: PORTD and PORTE are not imple- mented on the PIC16C63. |
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