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PIC12F508 데이터시트(PDF) 75 Page - Microchip Technology |
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PIC12F508 데이터시트(HTML) 75 Page - Microchip Technology |
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75 / 106 page ![]() © 2007 Microchip Technology Inc. Preliminary DS41236D-page 73 PIC12F508/509/16F505 10.3 Timing Parameter Symbology and Load Conditions – PIC12F508/509/16F505 The timing parameter symbols have been created following one of the following formats: FIGURE 10-3: LOAD CONDITIONS – PIC12F508/509/16F505 FIGURE 10-4: EXTERNAL CLOCK TIMING – PIC12F508/509/16F505 1. TppS2ppS 2. TppS T F Frequency T Time Lowercase subscripts (pp) and their meanings: pp 2to mc MCLR ck CLKOUT osc Oscillator cy Cycle time os OSC1 drt Device Reset Timer t0 T0CKI io I/O port wdt Watchdog Timer Uppercase letters and their meanings: S FFall P Period HHigh R Rise I Invalid (high-impedance) V Valid L Low Z High-impedance CL VSS pin Legend: CL = 50 pF for all pins except OSC2 15 pF for OSC2 in XT, HS or LP modes when external clock is used to drive OSC1 OSC1 Q4 Q1 Q2 Q3 Q4 Q1 13 3 44 2 |
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