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HT45F75 Datasheet(PDF) 134 Page - Holtek Semiconductor Inc |
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HT45F75 Datasheet(HTML) 134 Page - Holtek Semiconductor Inc |
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134 / 190 page  Rev. 1.10 13� De�e��e� 1�� �01� Rev. 1.10 135 De�e��e� 1�� �01� HT45F75 Body Fat Scale Flash MCU HT45F75 Body Fat Scale Flash MCU IftheTXENbitisequalto"1"andtheUARTENbitisalsoequalto"1",the transmitterwillbeenabledandtheTXpinwillbecontrolledbytheUART.Clearing theTXENbitduringatransmissionwillcausethedatatransmissiontobeabortedand willresetthetransmitter.Ifthissituationoccurs,theTXpinwillbeusedasanI/Oor otherpin-sharedfunctionalpin. Bit6 RXEN:UARTReceiverenabledcontrol 0:UARTreceiverisdisabled 1:UARTreceiverisenabled ThebitnamedRXENistheReceiverEnableBit.Whenthisbitisequalto"0",the receiverwillbedisabledwithanypendingdatareceptionsbeingaborted.Inaddition thereceivebufferswillbereset.InthissituationtheRXpinwillbeusedasanI/Oor otherpin-sharedfunctionalpin.IftheRXENbitisequalto"1"andtheUARTENbit isalsoequalto"1",thereceiverwillbeenabledandtheRXpinwillbecontrolledby theUART.ClearingtheRXENbitduringareceptionwillcausethedatareceptionto beabortedandwillresetthereceiver.Ifthissituationoccurs,theRXpinwillbeused asanI/Oorotherpin-sharedfunctionalpin. 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:RXpinfallingedgewake-upfunctionenablecontrol 0:RXpinwake-upfunctionisdisabled 1:RXpinwake-upfunctionisenabled Thebitenablesordisablesthereceiverwake-upfunction.Ifthisbitisequalto1and thedeviceisinIDLE0orSLEEPmode,afallingedgeontheRXpinwillwakeupthe device.Ifthisbitisequalto0andthedeviceisinIDLEorSLEEPmode,anyedge transitionsontheRXpinwillnotwakeupthedevice. 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. |
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