HT66F019 datasheet(154/175 Pages) HOLTEK

154 / 175 page

Rev. 1.00

154

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Rev. 1.00

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HT66F019

A/D Flash MCU with EEPROM

HT66F019

A/D Flash MCU with EEPROM

Bit5~4

TB11~TB10:TimeBase1Time-outPeriodselection

00:212/fTB

01:213/fTB

10:214/fTB

11:215/fTB

Bit3

LXTLP:LXTLowPowerControl

0:Disable(LXTquickstart-up)

1:Enable(LXTslowstart-up)

Bit2~0

TB02~TB00:TimeBase0time-outperiodselection

000:28/fTB

001:29/fTB

010:210/fTB

011:211/fTB

100:212/fTB

101:213/fTB

110:214/fTB

111:215/fTB

Serial Interface Module Interrupt

AnSIMInterruptrequestwilltakeplacewhentheSIMInterruptrequestflag,SIMF,isset,which

occurswhenabyteofdatahasbeenreceivedortransmittedbytheSIMinterface,anI2Cslave

addressmatchorI2Cbustime-outoccurrence.Toallowtheprogramtobranchtoitsrespective

interruptvectoraddress,theglobalinterruptenablebit,EMI,andtheSerialInterfaceInterrupt

enablebit,SIME,mustfirstbeset.Whentheinterruptisenabled,thestackisnotfullandanyof

theabovedescribedsituationsoccurs,willtakeplace.WhentheSerialInterfaceModuleInterruptis

serviced,theinterruptrequestflag,SIMF,willbeautomaticallyresetandtheEMIbitwillbecleared

todisableotherinterrupts.

UART Transfer Interrupt

TheUARTTransferInterruptiscontrolledbyseveralUARTtransferconditions.Whenoneofthese

conditionsoccurs,aninterruptpulsewillbegeneratedtogettheattentionofthemicrocontroller.

Theseconditionsareatransmitterdataregisterempty,transmitteridle,receiverdataavailable,

receiveroverrun,addressdetectandanRXpinwake-up.Toallowtheprogramtobranchtoits

respectiveinterruptvectoraddress,theglobalinterruptenablebit,EMI,andUARTInterrupt

enablebit,URE,mustfirstbeset.Whentheinterruptisenabled,thestackisnotfullandanyofthe

conditionsdescribedaboveoccurs,asubroutinecalltotheUARTInterruptvector,willtakeplace.

Whentheinterruptisserviced,theUARTInterruptflag,URF,willbeautomaticallycleared.The

EMIbitwillalsobeautomaticallyclearedtodisableotherinterrupts.

EEPROM Write Interrupt

TheEEPROMWriteInterruptiscontainedwithintheMulti-functionInterrupt.AnEEPROM

WriteInterruptrequestwilltakeplacewhentheEEPROMWriteInterruptrequestflag,DEF,isset,

whichoccurswhenanEEPROMWritecycleends.Toallowtheprogramtobranchtoitsrespective

interruptvectoraddress,theglobalinterruptenablebit,EMI,EEPROMWriteInterruptenablebit,

DEE,andassociatedMulti-functioninterruptenablebitmustfirstbeset.Whentheinterruptis

enabled,thestackisnotfullandanEEPROMWritecycleends,asubroutinecalltotherespective

Multi-functionInterruptvectorwilltakeplace.WhentheEEPROMWriteInterruptisserviced,the

EMIbitwillbeautomaticallyclearedtodisableotherinterrupts.However,onlytheMulti-function

interruptrequestflagwillbeautomaticallycleared.AstheDEFflagwillnotbeautomatically

cleared,ithastobeclearedbytheapplicationprogram.

HT66F019 Datasheet(PDF) 154 Page - Holtek Semiconductor Inc

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