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HT45F75 Datasheet(PDF) 105 Page - Holtek Semiconductor Inc |
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HT45F75 Datasheet(HTML) 105 Page - Holtek Semiconductor Inc |
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105 / 190 page  Rev. 1.10 10� De�e��e� 1�� �01� Rev. 1.10 105 De�e��e� 1�� �01� HT45F75 Body Fat Scale Flash MCU HT45F75 Body Fat Scale Flash MCU ADRL Register Bit 7 6 5 4 3 2 1 0 Na�e D7 D� D5 D� D3 D� D1 D0 R/W R R R R R R R R POR x x x x x x x x “x” unknown Bit7~0 A/DconversiondataRegisterbit7~bit0 A/D Converter Control Registers – ADCR0, ADCR1, ADCS TocontrolthefunctionandoperationoftheA/Dconverter,threecontrolregistersknownasADCR0, ADCR1andADCSareprovided.These8-bitregistersdefinefunctionssuchastheselectionof whichreferencesourceisusedtotheinternalADC,theADCclocksource,theADCoutputdatarate aswellascontrollingthepower-upfunctionandmonitoringtheADCendofconversionstatus. ADCR0 Register Bit 7 6 5 4 3 2 1 0 Na�e ADRST ADSLP ADOFF ADOR� ADOR1 ADOR0 — VREFS R/W R/W R/W R/W R/W R/W R/W — R/W POR 0 0 1 0 0 0 — 0 Bit7 ADRST:ADCsoftwareresetcontrolbit. 0:Disable 1:Enable ThisbitisusedtoresettheADCinternaldigitalSINCfilter.Thebitisnormallylow butifsethighandthenclearedlowagain,theA/Dconverterwillinitiateaconversion processdata. Bit6 ADSLP:ADCsleepmodecontrolbit 0:Normalmode 1:Sleepmode ThisbitisusedforADCsleepmodecontrolbit.TosetthisbithighwillforcetheADC entersleepmodewhichcanreducethepowerconsumptionandpreventtheADCstart- uptime. Bit5 ADOFF:ADCmodulepoweron/offcontrolbit 0:ADCmodulepoweron 1:ADCmodulepoweroff ThisbitcontrolsthepoweroftheADCmodule.Thisbitshouldbeclearedtozero toenabletheA/Dconverter.IfthebitissethighthentheADCwillbeswitched offreducingthedevicepowerconsumption.AstheADCwillconsumealimited amountofpower,evenwhennotexecutingaconversion,thismaybeanimportant considerationinpowersensitivebatterypoweredapplications. Note:1.ItisrecommendedtosetADOFF=1beforeenteringIDLE/SLEEPModefor savingpower. 2.ADOFF=1willpowerdowntheADCmodule,nomatterthesettingsof ADSLPandADRSTbits. 3.Therelationshipaboutthesebits,ADOFF,ADSLPandADRSTwillbe furtherdescribedelsewhere. Bit4~2 ADOR2~ADOR0:Outputdatarateselection NormalMode:OutputDataRate 000:CHOP=2,OSR=16384 001:CHOP=2,OSR=8192 010:CHOP=2,OSR=4096 011:CHOP=2,OSR=2048 |
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