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HT66F4530 Datasheet(PDF) 87 Page - Holtek Semiconductor Inc |
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HT66F4530 Datasheet(HTML) 87 Page - Holtek Semiconductor Inc |
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87 / 224 page  Rev. 1.00 8� De�e��e� �1� �01� Rev. 1.00 87 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 Bit1~0 IFS1~IFS0:RXinputsourcepinselection 00:PB6 01:PA0 10:PA5 11:PB6 Note:IntheSPIMastermode,thePA3andPC0pinseachcanbeusedastheSCSpinafter SIMEN=1andCSEN=1andareindependentoftheIFS[5:4]bits,whilethePA4andPD0pins eachcanbeusedastheSCKpinafterSIMEN=1andareindependentoftheIFS[3:2]bits. I/O Pin Structures TheaccompanyingdiagramillustratestheinternalstructuresoftheI/Ologicfunction.Astheexact logicalconstructionoftheI/Opinwilldifferfromthisdiagram,itissuppliedasaguideonlyto assistwiththefunctionalunderstandingofthelogicfunctionI/Opins.Thewiderangeofpin-shared structuresdoesnotpermitalltypestobeshown. M U X VDD Cont�ol Bit Data Bit Data Bus W�ite Cont�ol Registe� Chip Reset Read Cont�ol Registe� Read Data Registe� W�ite Data Registe� Syste� Wake-up wake-up Sele�t PA only I/O pin Weak Pull-up Pull-high Registe� Sele�t Q D CK Q D CK Q Q S S Logic Function Input/Output Structure Programming Considerations Withintheuserprogram,oneofthefirstthingstoconsiderisportinitialisation.Afterareset,all oftheI/Odataandportcontrolregisterswillbesethigh.ThismeansthatallI/Opinswilldefault toaninputstate,thelevelofwhichdependsontheotherconnectedcircuitryandwhetherpull- highselectionshavebeenchosen.Iftheportcontrolregistersarethenprogrammedtosetupsome pinsasoutputs,theseoutputpinswillhaveaninitialhighoutputvalueunlesstheassociatedport dataregistersarefirstprogrammed.Selectingwhichpinsareinputsandwhichareoutputscanbe achievedbyte-widebyloadingthecorrectvaluesintotheappropriateportcontrolregisterorby programmingindividualbitsintheportcontrolregisterusingthe"SET[m].i"and"CLR[m].i" instructions.Notethatwhenusingthesebitcontrolinstructions,aread-modify-writeoperationtakes place.Themicrocontrollermustfirstreadinthedataontheentireport,modifyittotherequirednew bitvaluesandthenrewritethisdatabacktotheoutputports. PortAhastheadditionalcapabilityofprovidingwake-upfunctions.Whenthesedevicesareinthe SLEEPorIDLEMode,variousmethodsareavailabletowakethesedevicesup.Oneoftheseisa hightolowtransitionofanyofthePortApins.SingleormultiplepinsonPortAcanbesetupto havethisfunction. |
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