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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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HT66F4530 데이터시트(PDF) 144 Page - Holtek Semiconductor Inc |
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HT66F4530 데이터시트(HTML) 144 Page - Holtek Semiconductor Inc |
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144 / 224 page  Rev. 1.00 144 De�e��e� �1� �01� Rev. 1.00 145 De�e��e� �1� �01� HT66F4530/HT66F4540/HT66F4550 A/D Flash MCU with Dual Operational Amplifiers HT66F4530/HT66F4540/HT66F4550 A/D Flash MCU with Dual Operational Amplifiers Bit3 TXAK:I2CBustransmitacknowledgeflag 0:Slavesendacknowledgeflag 1:Slavedonotsendacknowledgeflag TheTXAKbitisthetransmitacknowledgeflag.Aftertheslavedevicereceiptof8bits ofdata,thisbitwillbetransmittedtothebusonthe9thclockfromtheslavedevice. TheslavedevicemustalwayssetTXAKbitto"0"beforefurtherdataisreceived. Bit2 SRW:I2CSlaveRead/Writeflag 0:Slavedeviceshouldbeinreceivemode 1:Slavedeviceshouldbeintransmitmode TheSRWflagistheI2CSlaveRead/Writeflag.Thisflagdetermineswhether themasterdevicewishestotransmitorreceivedatafromtheI2Cbus.Whenthe transmittedaddressandslaveaddressismatch,thatiswhentheHAASflagissethigh, theslavedevicewillchecktheSRWflagtodeterminewhetheritshouldbeintransmit modeorreceivemode.IftheSRWflagishigh,themasterisrequestingtoreaddata fromthebus,sotheslavedeviceshouldbeintransmitmode.WhentheSRWflag iszero,themasterwillwritedatatothebus,thereforetheslavedeviceshouldbein receivemodetoreadthisdata. Bit1 IAMWU:I2CAddressMatchWake-upcontrol 0:Disable 1:Enable Thisbitshouldbesetto1toenabletheI2CaddressmatchwakeupfromtheSLEEP orIDLEMode.IftheIAMWUbithasbeensetbeforeenteringeithertheSLEEPor IDLEmodetoenabletheI2Caddressmatchwakeup,thenthisbitmustbeclearedby theapplicationprogramafterwake-uptoensurecorrectiondeviceoperation. Bit0 RXAK:I2CBusReceiveacknowledgeflag 0:Slavereceiveacknowledgeflag 1:Slavedoesnotreceiveacknowledgeflag TheRXAKflagisthereceiveracknowledgeflag.WhentheRXAKflagis"0",it meansthataacknowledgesignalhasbeenreceivedatthe9thclock,after8bitsofdata havebeentransmitted.Whentheslavedeviceinthetransmitmode,theslavedevice checkstheRXAKflagtodetermineifthemasterreceiverwishestoreceivethenext byte.TheslavetransmitterwillthereforecontinuesendingoutdatauntiltheRXAK flagis"1".Whenthisoccurs,theslavetransmitterwillreleasetheSDAlinetoallow themastertosendaSTOPsignaltoreleasetheI2CBus. |
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