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HT66F4530 Datasheet(PDF) 143 Page - Holtek Semiconductor Inc |
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HT66F4530 Datasheet(HTML) 143 Page - Holtek Semiconductor Inc |
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143 / 224 page  Rev. 1.00 14� De�e��e� �1� �01� Rev. 1.00 143 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 Bit4 Unimplemented,readas"0" Bit3~2 SIMDEB1~SIMDEB0:I2CDebounceTimeSelection 00:Nodebounce 01:2systemclockdebounce 1x:4systemclockdebounce ThesebitsareusedtoselecttheI2CdebouncetimewhentheSIMisconfiguredasthe I2CinterfacefunctionbysettingtheSIM2~SIM0bitsto"110". Bit1 SIMEN:SIMEnableControl 0:Disable 1:Enable Thebitistheoverallon/offcontrolfortheSIMinterface.WhentheSIMENbitis clearedtozerotodisabletheSIMinterface,theSDI,SDO,SCKandSCS,orSDAand SCLlineswilllosetheirSPIorI2CfunctionandtheSIMoperatingcurrentwillbe reducedtoaminimumvalue.WhenthebitishightheSIMinterfaceisenabled.Ifthe SIMisconfiguredtooperateasanSPIinterfaceviatheSIM2~SIM0bits,thecontents oftheSPIcontrolregisterswillremainattheprevioussettingswhentheSIMENbit changesfromlowtohighandshouldthereforebefirstinitialisedbytheapplication program.IftheSIMisconfiguredtooperateasanI2CinterfaceviatheSIM2~SIM0 bitsandtheSIMENbitchangesfromlowtohigh,thecontentsoftheI2Ccontrolbits suchasHTXandTXAKwillremainattheprevioussettingsandshouldthereforebe firstinitialisedbytheapplicationprogramwhiletherelevantI2CflagssuchasHCF, HAAS,HBB,SRWandRXAKwillbesettotheirdefaultstates. Bit0 SIMICF:SIMSPIIncompleteFlag TheSIMICFbitisonlyusedintheSPImodeandthedetaileddefinitionisdescribed intheSPIsection. • SIMC1 Register Bit 7 6 5 4 3 2 1 0 Na�e HCF HAAS HBB HTX TXAK SRW IAMWU 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 TheHAASflagistheaddressmatchflag.Thisflagisusedtodetermineiftheslave deviceaddressisthesameasthemastertransmitaddress.Iftheaddressesmatchthen thisbitwillbehigh,ifthereisnomatchthentheflagwillbelow. Bit5 HBB:I2CBusbusyflag 0:I2CBusisnotbusy 1:I2CBusisbusy TheHBBflagistheI2Cbusyflag.Thisflagwillbe"1"whentheI2Cbusisbusywhich willoccurwhenaSTARTsignalisdetected.Theflagwillbesetto"0"whenthebusis freewhichwilloccurwhenaSTOPsignalisdetected. Bit4 HTX:I2Cslavedeviceistransmitterorreceiverselection 0:Slavedeviceisthereceiver 1:Slavedeviceisthetransmitter |
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