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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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HT66F4530 데이터시트(PDF) 147 Page - Holtek Semiconductor Inc |
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HT66F4530 데이터시트(HTML) 147 Page - Holtek Semiconductor Inc |
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147 / 224 page  Rev. 1.00 14� De�e��e� �1� �01� Rev. 1.00 147 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 I2C Bus Data and Acknowledge Signal Thetransmitteddatais8-bitwideandistransmittedaftertheslavedevicehasacknowledgedreceipt ofitsslaveaddress.TheorderofserialbittransmissionistheMSBfirstandtheLSBlast.After receiptof8bitsofdata,thereceivermusttransmitanacknowledgesignal,level"0",beforeitcan receivethenextdatabyte.Iftheslavetransmitterdoesnotreceiveanacknowledgebitsignalfrom themasterreceiver,thentheslavetransmitterwillreleasetheSDAlinetoallowthemastertosend aSTOPsignaltoreleasetheI2CBus.ThecorrespondingdatawillbestoredintheSIMDregister. Ifsetupasatransmitter,theslavedevicemustfirstwritethedatatobetransmittedintotheSIMD register.Ifsetupasareceiver,theslavedevicemustreadthetransmitteddatafromtheSIMD register. Whentheslavereceiverreceivesthedatabyte,itmustgenerateanacknowledgebit,knownas TXAK,onthe9thclock.Theslavedevice,whichissetupasatransmitterwillchecktheRXAKbit intheSIMC1registertodetermineifitistosendanotherdatabyte,ifnotthenitwillreleasethe SDAlineandawaitthereceiptofaSTOPsignalfromthemaster. Sta�t SCL SDA SCL SDA 1 S=Sta�t (1 �it) SA=Slave Add�ess (7 �its) SR=SRW �it (1 �it) M=Slave devi�e send a�knowledge �it (1 �it) D=Data (8 �its) A=ACK (RXAK �it fo� t�ans�itte�� TXAK �it fo� �e�eive�� 1 �it) P=Stop (1 �it) 0 ACK Slave Add�ess SRW Stop Data ACK 11 0 10 10 10 01 01 00 S SA SR M D A D A …… S SA SR M D A D A …… P I2C Communication Timing Diagram Note:*Whenaslaveaddressismatched,thesedevicesmustbeplacedineitherthetransmitmode andthenwritedatatotheSIMDregister,orinthereceivemodewhereitmustimplementa dummyreadfromtheSIMDregistertoreleasetheSCLline. |
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