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HT45F65 Datasheet(PDF) 193 Page - Holtek Semiconductor Inc |
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HT45F65 Datasheet(HTML) 193 Page - Holtek Semiconductor Inc |
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193 / 231 page  Rev. 1.60 19� �ove��e� ��� �01� Rev. 1.60 193 �ove��e� ��� �01� HT45F65/HT45F66/HT45F67 Glucose Meter 8-Bit Flash MCU Bit6 RXEN:UARTReceiverenablecontrol 0:UARTReceiverisdisabled 1:UARTReceiverisenabled ThebitnamedRXENistheReceiverEnableBit.Whenthisbitisequalto“0”,the receiverwillbedisabledwithanypendingdatareceptionsbeingaborted.Inaddition thereceiverbufferswillbereset.InthissituationtheRXpinwillbeusedasanI/Oor otherpin-sharedfunctionalpin.IftheRXENbitisequalto“1”andtheUARTENbit isalsoequalto1,thereceiverwillbeenabledandtheRXpinwillbecontrolledbythe UART.ClearingtheRXENbitduringareceptionwillcausethedatareceptiontobe abortedandwillresetthereceiver.Ifthissituationoccurs,theRXpinwillbeusedas anI/Oorotherpin-sharedfunctionalpin. Bit5 BRGH:BaudRatespeedselection 0:Lowspeedbaudrate 1:Highspeedbaudrate ThebitnamedBRGHselectsthehighorlowspeedmodeoftheBaudRateGenerator. Thisbit,togetherwiththevalueplacedinthebaudrateregister,BRG,controlsthe baudrateoftheUART.Ifthebitisequalto0,thelowspeedmodeisselected. Bit4 ADDEN:Addressdetectfunctionenablecontrol 0:Addressdetectionfunctionisdisabled 1:Addressdetectionfunctionisenabled ThebitnamedADDENistheaddressdetectionfunctionenablecontrolbit.Whenthis bitisequalto1,theaddressdetectionfunctionisenabled.Whenitoccurs,ifthe8th bit,whichcorrespondstoRX7ifBNO=0,orthe9thbit,whichcorrespondstoRX8 ifBNO=1,hasavalueof“1”,thenthereceivedwordwillbeidentifiedasanaddress, ratherthandata.Ifthecorrespondinginterruptisenabled,aninterruptrequestwillbe generatedeachtimethereceivedwordhastheaddressbitset,whichisthe8thor9th bitdependingonthevalueoftheBNObit.Iftheaddressbitknownasthe8thor9th bitofthereceivedwordis“0”withtheaddressdetectionfunctionbeingenabled,an interruptwillnotbegeneratedandthereceiveddatawillbediscarded. Bit3 WAKE:RXpinfallingedgewake-upfunctionenablecontrol 0:RXpinwake-upfunctionisdisabled 1:RXpinwake-upfunctionisenabled Thebitenablesordisablesthereceiverwake-upfunction.Ifthisbitisequalto1and thedeviceisinIDLEorSLEEPmode,afallingedgeontheRXpinwillwakeupthe device.Ifthisbitisequalto0andthedeviceisinIDLEorSLEEPmode,anyedge transitionsontheRXpinwillnotwakeupthedevice. Bit2 RIE:Receiverinterruptenablecontrol 0:Receiverrelatedinterruptisdisabled 1:Receiverrelatedinterruptisenabled Thebitenablesordisablesthereceiverinterrupt.Ifthisbitisequalto1andwhenthe receiveroverrunflagOERRorreceiveddataavailableflagRXIFisset,theUART interruptrequestflagwillbeset.Ifthisbitisequalto0,theUARTinterruptrequest flagwillnotbeinfluencedbytheconditionoftheOERRorRXIFflags. |
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