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PIC16LC554 数据表(PDF) 73 Page - Microchip Technology |
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PIC16LC554 数据表(HTML) 73 Page - Microchip Technology |
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73 / 96 page ![]() © 1997 Microchip Technology Inc. Preliminary DS40143B-page 73 PIC16C55X(A) 10.4 Timing Parameter Symbology The timing parameter symbols have been created with one of the following formats: FIGURE 10-1: LOAD CONDITIONS 1. TppS2ppS 2. TppS T F Frequency T Time Lowercase subscripts (pp) and their meanings: pp ck CLKOUT os OSC1 io I/O port t0 T0CKI mc MCLR 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 VDD/2 CL RL Pin Pin VSS VSS CL RL = 464 Ω CL = 50 pF for all pins except OSC2 15 pF for OSC2 output Load condition 1 Load condition 2 |
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