HT67F488 datasheet(129/171 Pages) HOLTEK

129 / 171 page

Rev. 1.60

1�9

�ove��e� �� 016

HT67F488/HT67F489

TinyPowerTM A/D Flash MCU with LCD & EEPROM

Interrupts

Interruptsareanimportantpartofanymicrocontrollersystem.Whenanexternaleventoran

internalfunctionsuchasaTimerModuleoranA/Dconverterrequiresmicrocontrollerattention,

theircorrespondinginterruptwillenforceatemporarysuspensionofthemainprogramallowingthe

microcontrollertodirectattentiontotheirrespectiveneeds.Thedevicecontainsseveralexternal

interruptandinternalinterruptsfunctions.Theexternalinterruptisgeneratedbytheactionofthe

externalINT0~INT3pins,whiletheinternalinterruptsaregeneratedbyvariousinternalfunctions

suchasTMs,TimeBase,LVD,EEPROM,UARTandtheA/Dconverter.

Interrupt Registers

Overallinterruptcontrol,whichbasicallymeansthesettingofrequestflagswhencertain

microcontrollerconditionsoccurandthesettingofinterruptenablebitsbytheapplicationprogram,

iscontrolledbyaseriesofregisters,locatedintheSpecialPurposeDataMemory,asshowninthe

accompanyingtable.ThefirstistheINTC0~INTC2registerswhichsetuptheprimaryinterrupts,

thesecondistheMFI0~MFI4registerswhichsetuptheMulti-functioninterrupts.Finallythereisan

INTEGregistertosetuptheexternalinterrupttriggeredgetype.

Eachregistercontainsanumberofenablebitstoenableordisableindividualregistersaswellas

interruptflagstoindicatethepresenceofaninterruptrequest.Thenamingconventionofthese

followsaspecificpattern.Firstislistedanabbreviatedinterrupttype,thenthe(optional)numberof

thatinterruptfollowedbyeitheran“E”forenable/disablebitor“F”forrequestflag.

Function

Enable Bit

Request Flag

Notes

Glo�al

EMI

—

I�Tn Pin

I�TnE

I�TnF

n=0~3

A/D Conve�te�

ADE

ADF

—

Multi-function

MFnE

MFnF

n=0~4

Ti�e Base

TBnE

TBnF

n=0 o� 1

LVD

LVE

LVF

—

EEPROM

DEE

DEF

—

UART

UARE

UARF

—

TnPE

TnPF

n=0~3

TnAE

TnAF

n=0~3

Note:TheEEPROMInterruptisonlyfortheHT67F489.

Interrupt Register Bit Naming Conventions

Name

Bit

I�TEG

I�T3S1

I�T3S0

I�T�S1

I�T�S0

I�T1S1

I�T1S0

I�T0S1

I�T0S0

I�TC0

—

MF0F

I�T1F

I�T0F

MF0E

I�T1E

I�T0E

EMI

I�TC1

ADF

MF3F

MF�F

MF1F

ADE

MF3E

MF�E

MF1E

I�TC�

MF4F

I�T3F

I�T�F

UARF

MF4E

I�T3E

I�T�E

UARE

MFI0

—

T0AF

T0PF

—

T0AE

T0PE

MFI1

—

T1AF

T1PF

—

T1AE

T1PE

MFI�

—

T�AF

T�PF

—

T�AE

T�PE

MFI3

—

T3AF

T3PF

—

T3AE

T3PE

MFI4

TB1F

TB0F

DEF

LVF

TB1E

TB0E

DEE

LVE

Note:TheEEPROMInterruptisonlyfortheHT67F489.

Interrupt Register Contents

HT67F488 Datasheet(PDF) 129 Page - Holtek Semiconductor Inc

HT67F488 Datasheet(HTML) 129 Page - Holtek Semiconductor Inc

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