ComparatorComparator
PIC 12F675PIC 12F675
Zdeněk Matěj
72963@mail.muni.cz
ComparatorComparator
►The PIC12F629/675 devices have one analogThe PIC12F629/675 devices have one analog
comparatorcomparator
►Compare two analog valuesCompare two analog values
►On GP0 and GP1 are inputs to theOn GP0 and GP1 are inputs to the
comparatorcomparator
►GP2 can be the comparator outputGP2 can be the comparator output
►Generates interrupt (CMIF)Generates interrupt (CMIF)
Comparator - CMCONComparator - CMCON
Comparator – operation modesComparator – operation modes
Comparator – voltage referenceComparator – voltage reference
►The voltage reference can output 32 distinctThe voltage reference can output 32 distinct
voltage levelsvoltage levels
Comparator – voltage referenceComparator – voltage reference
Comparator - exampleComparator - example
//init//init
// - COUT - CINV CIS CM2 CM1 CM0// - COUT - CINV CIS CM2 CM1 CM0
CMCON=0;CMCON=0;
output=COUT;output=COUT;
ReferencesReferences
Source:Source:
http://ww1.microchip.com/downloads/en/devhttp://ww1.microchip.com/downloads/en/deviicedoc/41190c.pdfcedoc/41190c.pdf