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HT45R2K-C Folha de dados(PDF) 70 Page - Holtek Semiconductor Inc |
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HT45R2K-C Folha de dados(HTML) 70 Page - Holtek Semiconductor Inc |
70 / 105 page Rev. 1.40 70 �a��� 1�� �01� Rev. 1.40 71 �a��� 1�� �01� HT45R2K-C/-B/-A Dual Slope 16K/8K/4K ASSP MCU for Body Fat Scale HT45R2K-C/-B/-A Dual Slope 16K/8K/4K ASSP MCU for Body Fat Scale bit4~2 IAD2~IAD1:ChopperClockSelect IAchopperclockdefinedas: 000:clock=(fSYS/32)/1 001:clock=(fSYS/32)/2 010:clock=(fSYS/32)/4 011:clock=(fSYS/32)/8 100:clock=(fSYS/32)/16 101:clock=(fSYS/32)/32 110:clock=(fSYS/32)/64 111:clock=(fSYS/32)/128 Asuggestedclockspeedhasarangeofaround8-10kHz.NotethatCHOPENmustbe enabled–heretheIAchopperclockisapproximate8k~10k.(7.8125k~11.71875k) andtheADCchopperclockmustbe<8k. bit1 Unimplemented,readas"0" bit0 RSEN:OP5external/internalgainsetupcontrolbit 0:Openloopsetup–gaindefinedbyexternalreisistors. 1:Closedloopsetup–gaindefinedbyG10,G11andG12bitsintheIAC0register. IADAC Register Bit 7 6 5 4 3 2 1 0 Name IADAEN — D� D4 D3 D� D1 D0 R/W R/W — R/W R/W R/W R/W R/W R/W POR 0 0 0 0 0 0 0 0 bit7 IADAEN:IADACenable/disable 0:disable 1:enable bit6 Unimplemented,readas"0" bit5~0 D5~D0:DACOutputVoltageSetupBits Note:TheDACoutputrangeis0V~{VOREG-(VOREG/64)} 1LSB=1digitalcode=VOREG/64 OutputVoltage=VOREG/64*(D[5:0]) Interrupts Interruptsareanimportantpartofanymicrocontrollersystem.Whenanexternaleventoraninternal functionsuchasaTimer/EventCounteroranA/Dconverterrequiresmicrocontrollerattention, theircorrespondinginterruptwillenforceatemporarysuspensionofthemainprogramallowingthe microcontrollertodirectattentiontotheirrespectiveneeds. Thedeviceprovidesanexternalinterruptandmultipleinternalinterrupts.Theexternalinterruptis controlledbytheactionoftheexternalinterruptpin,whiletheinternalinterruptsarecontrolledby theTimer/EventCounters,TouchKeyandA/Dconverter. Interrupt Register Overallinterruptcontrol,whichmeansinterruptenablingandrequestflagsetting,iscontrolledby usingthreeregisters,INTC0,INTC1andMFIC.Bycontrollingtheappropriateenablebitsinthis registerseachindividualinterruptcanbeenabledordisabled.Alsowhenaninterruptoccurs,the correspondingrequestflagwillbesetbythemicrocontroller.Theglobalenableflagifclearedto zerowilldisableallinterrupts. |
Nº de peça semelhante - HT45R2K-C_15 |
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Descrição semelhante - HT45R2K-C_15 |
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