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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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4553 датащи(PDF) 39 Page - Renesas Technology Corp |
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4553 датащи(HTML) 39 Page - Renesas Technology Corp |
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39 / 145 page  Rev.3.02 Dec 22, 2006 page 39 of 142 REJ03B0024-0302 4553 Group Fig. 28 Timer 2 count start/stop timing (R2L) (R2H) (R2L) Timer 2 count start timing Waveform extension function of CNTR output “H” interval: Invalid (W22 = “0”), CNTR output: valid (W23 = “1”), Count source: XIN input selected (W20 = “0”), Reload register R2L: “0316” Reload register R2H: “0216” Timer 2 count start timing TW2A instruction execution cycle (W21) ← 1 0216 0116 0016 0216 0316 0216 0116 0016 0316 0216 0016 0016 0216 0116 0016 0316 0216 0116 0216 (R2H) (R2L) 0116 (R2H) (Note 1) Notes 1: In order to stop timer 2 at CNTR output valid (W23 = “1”), avoid a timing when timer 2 underflows. If these timings overlap, a hazard may occur in a CNTR output waveform. 2: At CNTR output valid, timer 2 stops after “H” interval of PWM signal set by reload register R2H is output. Mi Mi+1 Mi+2 Mi Mi+1 Mi+2 0116 Timer 2 count value (Reload register) Timer 2 underflow signal PWM signal Machine cycle XIN input (count source selected) System clock f(STCK)=f(XIN)/4 Register W21 q Timer 2 count stop timing TW2A instruction execution cycle (W21) ← 0 Timer 2 count stop timing Timer 2 count value (Reload register) Timer 2 underflow signal PWM signal Machine cycle XIN input (count source selected) System clock f(STCK)=f(XIN)/4 Register W21 |
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