HT66F019 datasheet(146/175 Pages) HOLTEK

146 / 175 page

Rev. 1.00

146

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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

Interrupts

Interruptsareanimportantpartofanymicrocontrollersystem.Whenanexternaleventoraninternal

functionsuchasaTimerModulerequireoranA/Dconverterrequiresmicrocontrollerattention,

theircorrespondinginterruptwillenforceatemporarysuspensionofthemainprogramallowingthe

microcontrollertodirectattentiontotheirrespectiveneeds.Thedevicecontainsseveralexternal

interruptandinternalinterruptfunctions.Theexternalinterruptisgeneratedbytheactionofthe

externalINTnpin,whiletheinternalinterruptsaregeneratedbyvariousinternalfunctionssuchas

theTMs,Comparator,Timebases,LVD,EEPROM,A/Dconverter,SIMandUART.

Interrupt Registers

Overallinterruptcontrol,whichbasicallymeansthesettingofrequestflagswhencertain

microcontrollerconditionsoccurandthesettingofinterruptenablebitsbytheapplicationprogram,

iscontrolledbyaseriesofregisters,locatedintheSpecialPurposeDataMemory,asshown

intheaccompanyingtable.Thenumberofregistersfallsintothreecategories.Thefirstisthe

INTC0~INTC2registerswhichsetuptheprimaryinterrupts,thesecondistheMFI0~MFI2register

whichsetuptheMulti-functioninterrupt.FinallythereisanINTEGregistertosetuptheexternal

interrupttriggeredgetype.

Eachregistercontainsanumberofenablebitstoenableordisableindividualregistersaswellas

interruptflagstoindicatethepresenceofaninterruptrequest.Thenamingconventionofthese

followsaspecificpattern.Firstislistedanabbreviatedinterrupttype,thenthe(optional)numberof

thatinterruptfollowedbyeitheran"E"forenable/disablebitor"F"forrequestflag.

Function

Enable Bit

Request Flag

Notes

Glo�al

EMI

—

INTn Pin

INTnE

INTnF

n=0~1

Co�pa�ato�

CPE

CPF

—

Multi-fun�tion

MFnE

MFnF

n=0~�

A/D Conve�te�

ADE

ADF

—

Ti�e Base

TBnE

TBnF

n=0~1

LVD

LVE

LVF

—

EEPROM

DEE

DEF

—

SIM

SIME

SIMF

—

UART

URE

URF

—

CTM

CTMPE

CTMPF

—

CTMAE

CTMAF

STM

STMPE

STMPF

—

STMAE

STMAF

PTM

PTMPE

PTMPF

—

PTMAE

PTMAF

Interrupt Register Bit Naming Conventions

HT66F019 Datasheet(PDF) 146 Page - Holtek Semiconductor Inc

HT66F019 Datasheet(HTML) 146 Page - Holtek Semiconductor Inc

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