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Comparatie intre PIC18F2550 si PIC18F26K80


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Am numarat impulsuri anlogice externe pana la o frecventa de 5.5 MHz folosind comparatorul analogic C1 si numaratorul T3 ale unui PIC18F2550 lucrand la o frecventa de 48MHz, care este si frecventa sa de lucru maxima. Pentru a numara impulsuri analogice externe la o frecventa de 6.5 MHz am achizitionat un PIC18F26K80, l-am programat sa lucreze la 64MHz si am folosit tot C1 si T3. Din pacate la impulsuri peste 2MHz comparatorul sau C1 nu mai raspunde. Am gresit eu undeva sau acest PIC18F26K80 este mai putin performant decat PIC18F2550 desi este de o generatie mai noua?

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