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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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HT66F4530 数据表(PDF) 140 Page - Holtek Semiconductor Inc |
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HT66F4530 数据表(HTML) 140 Page - Holtek Semiconductor Inc |
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140 / 224 page  Rev. 1.00 140 De�e��e� �1� �01� Rev. 1.00 141 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 Interface TheI2Cinterfaceisusedtocommunicatewithexternalperipheraldevicessuchassensors, EEPROMmemoryetc.OriginallydevelopedbyPhilips,itisatwolinelowspeedserialinterface forsynchronousserialdatatransfer.Theadvantageofonlytwolinesforcommunication,relatively simplecommunicationprotocolandtheabilitytoaccommodatemultipledevicesonthesamebus hasmadeitanextremelypopularinterfacetypeformanyapplications. Devi�e Slave Devi�e Maste� Devi�e Slave VDD SDA SCL I2C Master Slave Bus Connection I2C Interface Operation TheI2Cserialinterfaceisatwolineinterface,aserialdataline,SDA,andserialclockline,SCL.As manydevicesmaybeconnectedtogetheronthesamebus,theiroutputsarebothopendraintypes. Forthisreasonitisnecessarythatexternalpull-highresistorsareconnectedtotheseoutputs.Note thatnochipselectlineexists,aseachdeviceontheI2Cbusisidentifiedbyauniqueaddresswhich willbetransmittedandreceivedontheI2Cbus. WhentwodevicescommunicatewitheachotheronthebidirectionalI2Cbus,oneisknownasthe masterdeviceandoneastheslavedevice.Bothmasterandslavecantransmitandreceivedata, however,itisthemasterdevicethathasoverallcontrolofthebus.Forthesedevices,whichonly operateinslavemode,therearetwomethodsoftransferringdataontheI2Cbus,theslavetransmit modeandtheslavereceivemode. Shift Registe� T�ans�it/ Re�eive Cont�ol Unit fSYS fSUB Data Bus I�C Add�ess Registe� (SIMA) I�C Data Registe� (SIMD) Add�ess Co�pa�ato� Read/W�ite Slave SRW Dete�t Sta�t o� Stop HBB Ti�e-out Cont�ol SIMTOF Add�ess Mat�h– HAAS I�C Inte��upt De�oun�e Ci��uit�y SCL Pin M U X TXAK Data out MSB SIMTOEN Add�ess Mat�h SIMDEB[1:0] SDA Pin Data in MSB Di�e�tion Cont�ol HTX 8-�it Data T�ansfe� Co�plete– HCF I2C Block Diagram |
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