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HT45FM2C Datasheet(PDF) 64 Page - Holtek Semiconductor Inc |
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HT45FM2C Datasheet(HTML) 64 Page - Holtek Semiconductor Inc |
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64 / 171 page  Rev. 1.10 64 �a� �0� �01� Rev. 1.10 65 �a� �0� �01� HT45FM2C Brushless DC Motor Flash Type 8-Bit MCU HT45FM2C Brushless DC Motor Flash Type 8-Bit MCU Preliminar� Compact TM Operation Atitscoreisa10-bitor16-bitcount-upcounterwhichisdrivenbyauserselectableinternalor externalclocksource.Therearealsotwointernalcomparatorswiththenames,ComparatorAand ComparatorP.ThesecomparatorswillcomparethevalueinthecounterwithCCRPandCCRA registers.TheCCRPisthreebitswidewhosevalueiscomparedwiththehighestthreebitsoreight bitsinthecounterwhiletheCCRAisthetenbitsorsixteenbitsandthereforecompareswithall counterbits. Theonlywayofchangingthevalueofthe10-bitor16-bitcounterusingtheapplicationprogram, istoclearthecounterbychangingtheTnONbitfromlowtohigh.Thecounterwillalsobecleared automaticallybyacounteroverfloworacomparematchwithoneofitsassociatedcomparators. Whentheseconditionsoccur,aTMinterruptsignalwillalsousuallybegenerated.TheCompact TypeTMcanoperateinanumberofdifferentoperationalmodes,canbedrivenbydifferentclock sourcesincludinganinputpinandcanalsocontrolanoutputpin.Alloperatingsetupconditionsare selectedusingrelevantinternalregisters. Compact Type TM Register Description OveralloperationoftheCompactTMiscontrolledusingsixregisters.Areadonlyregisterpair existstostoretheinternalcounter10-bitor16-bitvalue,whilearead/writeregisterpairexiststo storetheinternal10-bitor16-bitCCRAvalue.Theremainingtworegistersarecontrolregisters whichsetupthedifferentoperatingandcontrolmodesaswellasthethreeoreightCCRPbits. Name Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 T�nC0 TnPAU TnCK� TnCK1 TnCK0 TnON TnRP� TnRP1 TnRP0 T�nC1 Tn�1 Tn�0 TnIO1 TnIO0 TnOC TnPOL TnDPX TnCCLR T�nDL D7 D6 D5 D4 D� D� D1 D0 T�nDH — — — — — — D9 D8 T�nAL D7 D6 D5 D4 D� D� D1 D0 T�nAH — — — — — — D9 D8 10-bit Compact TM Register List(n=0, 1, 2, 3) Name Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 T�5C0 T5PAU T5CK� T5CK1 T5CK0 T5ON T5RP� T5RP1 T5RP0 T�5C1 T5�1 T5�0 T5IO1 T5IO0 T5OC T5POL T5DPX T5CCLR T�5DL D7 D6 D5 D4 D� D� D1 D0 T�5DH D15 D14 D1� D1� D11 D10 D9 D8 T�5AL D7 D6 D5 D4 D� D� D1 D0 T�5AH D15 D14 D1� D1� D11 D10 D9 D8 T�5RP D7 D6 D5 D4 D� D� D1 D0 16-bit Compact TM Register List TMnDL Register(n=0, 1, 2, 3) — 10-bit CTM Bit 7 6 5 4 3 2 1 0 Name D7 D6 D5 D4 D� D� D1 D0 R/W R R R R R R R R POR 0 0 0 0 0 0 0 0 Bit 7~0 TMnDL: TMnCounterLowByteRegisterbit7~bit0 TMn10-bitCounterbit7~bit0 |
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