HT45F75 datasheet(145/190 Pages) HOLTEK

145 / 190 page

Rev. 1.10

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HT45F75

Body Fat Scale Flash MCU

HT45F75

Body Fat Scale Flash MCU

Interrupts

Interruptsareanimportantpartofanymicrocontrollersystem.Whenanexternaleventoran

internalfunctionsuchasaTimerModuleoranA/Dconverterrequiresmicrocontrollerattention,

theircorrespondinginterruptwillenforceatemporarysuspensionofthemainprogramallowingthe

microcontrollertodirectattentiontotheirrespectiveneeds.Thedevicecontainsseveralexternal

interruptandinternalinterruptsfunctions.Theexternalinterruptsaregeneratedbytheactionofthe

externalINT0~INT1pins,whiletheinternalinterruptsaregeneratedbyvariousinternalfunctions

suchastheTMs,TimeBase,LVD,EEPROMandtheA/Dconverter.

Interrupt Registers

Overallinterruptcontrol,whichbasicallymeansthesettingofrequestflagswhencertain

microcontrollerconditionsoccurandthesettingofinterruptenablebitsbytheapplicationprogram,

iscontrolledbyaseriesofregisters,locatedintheSpecialPurposeDataMemory.Thefirstisthe

INTC0~INTC2registerswhichsetuptheprimaryinterrupts,thesecondistheMFI0~MFI3registers

whichsetuptheMulti-functioninterrupts.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

Multi-fun�tion

MFnE

MFnF

n=0~3

A/D Conve�te�

ADE

ADF

—

Ti�e Base

TBnE

TBnF

n=0~1

LVD

LVE

LVF

—

EEPROM

DEE

DEF

—

SIM

SIE

SIF

—

I�C ti�e out

I�CTOE

I�CTOF

—

UART

UIE

UIF

—

TnPE

TnPF

n=0~�

TnAE

TnAF

Interrupt Register Bit Naming Conventions

HT45F75 Datasheet(PDF) 145 Page - Holtek Semiconductor Inc

HT45F75 Datasheet(HTML) 145 Page - Holtek Semiconductor Inc

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