ETIC 2230 Guia do Utilizador descarregar pdf (Página 123)

Rev. 1.10 122 November 14, 2014 Rev. 1.10 123 November 14, 2014

HT66FW2230

Wireless Charger A/D Flash 8-Bit MCU

Multi-function Interrupt

WithinthisdevicethereareuptothreeMulti-functioninterrupts.Unliketheotherindependent

interrupts,theseinterruptshavenoindependentsource,butratherareformedfromotherexisting

interruptsources,namelytheTMInterrupts,LVDinterruptandEEPROMInterrupt.

AMulti-functioninterruptrequestwilltakeplacewhenanyoftheMulti-functioninterruptrequest

ags,MF0F~MF2Fareset.TheMulti-functioninterruptagswillbesetwhenanyoftheirincluded

functionsgenerateaninterruptrequestag.Toallowtheprogramtobranchtoitsrespectiveinterrupt

vectoraddress,whentheMulti-functioninterruptisenabledandthestackisnotfull,andeitherone

oftheinterruptscontainedwithineachofMulti-functioninterruptoccurs,asubroutinecalltooneof

theMulti-functioninterruptvectorswilltakeplace.Whentheinterruptisserviced,therelatedMulti-

Functionrequestag,willbeautomaticallyresetandtheEMIbitwillbeautomaticallyclearedto

disableotherinterrupts.

However,itmustbenotedthat,althoughtheMulti-functionInterruptagswillbeautomatically

resetwhentheinterruptisserviced,therequestflagsfromtheoriginalsourceoftheMulti-

functioninterrupts,namelytheTMInterrupts,LVDinterruptandEEPROMInterruptwillnotbe

automaticallyresetandmustbemanuallyresetbytheapplicationprogram.

OCP Interrupt

TheOCPInterruptiscontrolledbydetectingahugecurrent.AnOCPInterruptrequestwilltake

placewhentheOCPInterruptrequestflag,OCPF,isset,whichoccurswhenahugecurrentis

detected.Toallowtheprogramtobranchtoitsrespectiveinterruptvectoraddress,theglobal

interruptenablebit,EMI,andOCPInterruptenablebit,OCPE,mustrstbeset.Whentheinterrupt

isenabled,thestackisnotfullandahugecurrentisdetected,asubroutinecalltotheOCPInterrupt

vector,willtakeplace.Whentheinterruptisserviced,theOCPInterruptflag,OCPF,willbe

automaticallycleared.TheEMIbitwillalsobeautomaticallyclearedtodisableotherinterrupts.

Demodulation Interrupt

TheDemodulationInterruptiscontrolledbythedemodulationprocess.AdemodulationInterrupt

requestwilltakeplacewhentheDemodulationInterruptrequestag,DEMF,isset,whichoccurs

whentheDemodulationprocessnishes.Toallowtheprogramtobranchtoitsrespectiveinterrupt

vectoraddress,theglobalinterruptenablebit,EMI,andDemodulationInterruptenablebit,DEME,

mustrstbeset.Whentheinterruptisenabled,thestackisnotfullandDemodulationprocesshas

ended,asubroutinecalltotheDemodulationInterruptvector,willtakeplace.Whentheinterruptis

serviced,theDemodulationInterruptag,DEMF,willbeautomaticallycleared.TheEMIbitwill

alsobeautomaticallyclearedtodisableotherinterrupts.

A/D Converter Interrupt

TheA/DConverterInterruptiscontrolledbytheterminationofanA/Dconversionprocess.AnA/

DConverterInterruptrequestwilltakeplacewhentheA/DConverterInterruptrequestag,ADF,

isset,whichoccurswhentheA/Dconversionprocessnishes.Toallowtheprogramtobranchtoits

respectiveinterruptvectoraddress,theglobalinterruptenablebit,EMI,andA/DInterruptenablebit,

ADE,mustrstbeset.Whentheinterruptisenabled,thestackisnotfullandtheA/Dconversion

processhasended,asubroutinecalltotheA/DConverterInterruptvector,willtakeplace.Whenthe

interruptisserviced,theA/DConverterInterruptag,ADF,willbeautomaticallycleared.TheEMI

bitwillalsobeautomaticallyclearedtodisableotherinterrupts.

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