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HT46R068B Folha de dados(PDF) 43 Page - Holtek Semiconductor Inc |
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HT46R068B Folha de dados(HTML) 43 Page - Holtek Semiconductor Inc |
43 / 135 page Rev. 1.50 4� �e���a�� 05� �015 Rev. 1.50 43 �e���a�� 05� �015 HT46R068B/HT46R069B Enhanced A/D 8-Bit OTP MCU HT46R068B/HT46R069B Enhanced A/D 8-Bit OTP MCU MoreinformationregardingexternalresetcircuitsislocatedinApplicationNoteHA0075Eonthe Holtekwebsite. • RESPinReset ThistypeofresetoccurswhenthemicrocontrollerisalreadyrunningandtheRESpinisforcefully pulledlowbyexternalhardwaresuchasanexternalswitch.Inthiscaseasinthecaseofother reset,theProgramCounterwillresettozeroandprogramexecutioninitiatedfromthispoint. RE S In te r nal R es et 0. 9 V DD 0. 4 V DD t RS TD + t SST RES Reset Timing Chart Note:tRSTDispower-ondelay,typicaltime=100ms • LowVoltageReset—LVR Themicrocontrollercontainsalowvoltageresetcircuitinordertomonitorthesupplyvoltageof thedevice.TheLVRfunctionisselectedviaaconfigurationoption.Ifthesupplyvoltageofthe devicedropstowithinarangeof0.9V~VLVRsuchasmightoccurwhenchangingthebattery,the LVRwillautomaticallyresetthedeviceinternally.ForavalidLVRsignal,alowsupplyvoltage, i.e.,avoltageintherangebetween0.9V~VLVRmustexistforatimegreaterthanthatspecified bytLVRintheA.C.characteristics.Ifthelowsupplyvoltagestatedoesnotexceedthisvalue,the LVRwillignorethelowsupplyvoltageandwillnotperformaresetfunction.TheactualVLVR valuecanbeselectedviaconfigurationoptions. LV R In te r nal R es et t RS TD + t SST Low Voltage Reset Timing Chart Note:tRSTDispower-ondelay,typicaltime=100ms • WatchdogTime-outResetduringNormalOperation TheWatchdogtime-outResetduringnormaloperationisthesameasahardwareRESpinreset exceptthattheWatchdogtime-outflagTOwillbesetto"1". t RS TD + t SST WD T Ti me - out In te r nal R es et WDT Reset during Normal Operation Timing Chart Note:tRSTDispower-ondelay,typicaltime=100ms |
Nº de peça semelhante - HT46R068B_15 |
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Descrição semelhante - HT46R068B_15 |
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