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PIC16F753 データシート(PDF) 127 Page - Microchip Technology |
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PIC16F753 データシート(HTML) 127 Page - Microchip Technology |
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127 / 230 page  2013-2015 Microchip Technology Inc. DS40001709C-page 127 PIC16F753/HV753 15.10 Zero Latency Filter In high-speed operation, and under proper circuit conditions, it is possible for the comparator output to oscillate. This oscillation can have adverse effects on the hardware and software relying on this signal. Therefore, a digital filter has been added to the comparator output to suppress the comparator output oscillation. Once the comparator output changes, the output is prevented from reversing the change for a nominal time of 20 ns. This allows the comparator output to stabilize without affecting other dependent devices. Refer to Figure 15-3. FIGURE 15-3: COMPARATOR ZERO LATENCY FILTER OPERATION CxOUT From Comparator CxOUT From ZLF TZLF Output waiting for TZLF to expire before an output change is allowed TZLF has expired so output change of ZLF is immediate based on comparator output change |
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