HT66F019 datasheet(137/175 Pages) HOLTEK

137 / 175 page

Rev. 1.00

136

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HT66F019

A/D Flash MCU with EEPROM

HT66F019

A/D Flash MCU with EEPROM

Bit5

BRGH:BaudRatespeedselection

0:Lowspeedbaudrate

1:Highspeedbaudrate

ThebitnamedBRGHselectsthehighorlowspeedmodeoftheBaudRateGenerator.

Thisbit,togetherwiththevalueplacedinthebaudrateregisterBRG,controlsthe

BaudRateoftheUART.Ifthisbitisequalto"1",thehighspeedmodeisselected.If

thebitisequalto"0",thelowspeedmodeisselected.

Bit4

ADDEN:Addressdetectfunctionenablecontrol

0:Addressdetectfunctionisdisabled

1:Addressdetectfunctionisenabled

ThebitnamedADDENistheaddressdetectfunctionenablecontrolbit.Whenthis

bitisequalto"1",theaddressdetectfunctionisenabled.Whenitoccurs,ifthe8th

bit,whichcorrespondstoRX7ifBNO=0orthe9thbit,whichcorrespondstoRX8if

BNO=1,hasavalueof"1",thenthereceivedwordwillbeidentifiedasanaddress,

ratherthandata.Ifthecorrespondinginterruptisenabled,aninterruptrequestwillbe

generatedeachtimethereceivedwordhastheaddressbitset,whichisthe8thor9th

bitdependingonthevalueofBNO.Iftheaddressbitknownasthe8thor9thbitofthe

receivedwordis"0"withtheaddressdetectfunctionbeingenabled,aninterruptwill

notbegeneratedandthereceiveddatawillbediscarded.

Bit3

WAKE:RXpinwake-upUARTfunctionenablecontrol

0:RXpinwake-upUARTfunctionisdisabled

1:RXpinwake-upUARTfunctionisenabled

Thisbitisusedtocontrolthewake-upUARTfunctionwhenafallingedgeontheRX

pinoccurs.NotethatthisbitisonlyavailablewhentheUARTclock(fH)isswitched

off.TherewillbenoRXpinwake-upUARTfunctioniftheUARTclock(fH)exists.

IftheWAKEbitissetto1astheUARTclock(fH)isswitchedoff,aUARTwake-

uprequestwillbeinitiatedwhenafallingedgeontheRXpinoccurs.Whenthis

requesthappensandthecorrespondinginterruptisenabled,anRXpinwake-upUART

interruptwillbegeneratedtoinformtheMCUtowakeuptheUARTfunctionby

switchingontheUARTclock(fH)viatheapplicationprogram.Otherwise,theUART

functioncannotresumeevenifthereisafallingedgeontheRXpinwhentheWAKE

bitisclearedto0.

Bit2

RIE:Receiverinterruptenablecontrol

0:Receiverrelatedinterruptisdisabled

1:Receiverrelatedinterruptisenabled

Thisbitenablesordisablesthereceiverinterrupt.Ifthisbitisequalto"1"andwhen

thereceiveroverrunflagOERRorreceivedataavailableflagRXIFisset,theUART

interruptrequestflagwillbeset.Ifthisbitisequalto"0",theUARTinterruptrequest

flagwillnotbeinfluencedbytheconditionoftheOERRorRXIFflags.

Bit1

TIIE:TransmitterIdleinterruptenablecontrol

0:Transmitteridleinterruptisdisabled

1:Transmitteridleinterruptisenabled

Thisbitenablesordisablesthetransmitteridleinterrupt.Ifthisbitisequalto"1"and

whenthetransmitteridleflagTIDLEisset,duetoatransmitteridlecondition,the

UARTinterruptrequestflagwillbeset.Ifthisbitisequalto"0",theUARTinterrupt

requestflagwillnotbeinfluencedbytheconditionoftheTIDLEflag.

Bit0

TEIE:TransmitterEmptyinterruptenablecontrol

0:Transmitteremptyinterruptisdisabled

1:Transmitteremptyinterruptisenabled

Thisbitenablesordisablesthetransmitteremptyinterrupt.Ifthisbitisequalto"1"

andwhenthetransmitteremptyflagTXIFisset,duetoatransmitteremptycondition,

theUARTinterruptrequestflagwillbeset.Ifthisbitisequalto"0",theUART

interruptrequestflagwillnotbeinfluencedbytheconditionoftheTXIFflag.

HT66F019 Datasheet(PDF) 137 Page - Holtek Semiconductor Inc

HT66F019 Datasheet(HTML) 137 Page - Holtek Semiconductor Inc

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