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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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HT45F75 데이터시트(PDF) 122 Page - Holtek Semiconductor Inc |
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HT45F75 데이터시트(HTML) 122 Page - Holtek Semiconductor Inc |
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122 / 190 page  Rev. 1.10 1�� De�e��e� 1�� �01� Rev. 1.10 1�3 De�e��e� 1�� �01� HT45F75 Body Fat Scale Flash MCU HT45F75 Body Fat Scale Flash MCU SIMC1 Register Bit 7 6 5 4 3 2 1 0 Na�e HCF HAAS HBB HTX TXAK SRW RNIC RXAK R/W R R R R/W R/W R R/W R POR 1 0 0 0 0 0 0 1 Bit7 HCF:I2CBusdatatransfercompletionflag 0:Dataisbeingtransferred 1:Completionofan8-bitdatatransfer TheHCFflagisthedatatransferflag.Thisflagwillbezerowhendataisbeing transferred.Uponcompletionofan8-bitdatatransfertheflagwillgohighandan interruptwillbegenerated. Bit6 HAAS:I2CBusaddressmatchflag 0:Notaddressmatch 1:Addressmatch TheHASSflagistheaddressmatchflag.Thisflagisusedtodetermineiftheslave deviceaddressisthesameasthemastertransmitaddress.Iftheaddressesmatchthen thisbitwillbehigh,ifthereisnomatchthentheflagwillbelow. Bit5 HBB:I2CBusbusyflag 0:I2CBusisnotbusy 1:I2CBusisbusy TheHBBflagistheI2Cbusyflag.Thisflagwillbe“1”whentheI2Cbusisbusy whichwilloccurwhenaSTARTsignalisdetected.Theflagwillbeclearedtozero whenthebusisfreewhichwilloccurwhenaSTOPsignalisdetected. Bit4 HTX:SelectI2Cslavedeviceistransmitterorreceiver 0:Slavedeviceisthereceiver 1:Slavedeviceisthetransmitter Bit3 TXAK:I2CBustransmitacknowledgeflag 0:Slavesendacknowledgeflag 1:Slavedonotsendacknowledgeflag TheTXAKbitisthetransmitacknowledgeflag.Aftertheslavedevicereceiptof8-bits 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 RNIC:I2CRunningNotusingInternalClock. 0:I2Crunningusinginternalclock 1:I2CrunningNOTusinginternalclock TheI2Cmodulecanrunwithoutusinginternalclock,andgenerateaninterruptifthe SIMinterruptisenabled,whichcanbeusedinsleepmode,idle(slow)modeand normal(slow)mode. Note:ifRNIC=1andMCUisinhalt,slave-receivercanworkwellbutslave- transmitterdoesn’tworksinceitneedssystemclock. |
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