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HT46R068B Folha de dados(PDF) 43 Page - Holtek Semiconductor Inc

Nome de Peças HT46R068B
Descrição Electrónicos  Enhanced A/D 8-Bit OTP MCU
Download  135 Pages
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Fabricante Electrônico  HOLTEK [Holtek Semiconductor Inc]
Página de início  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT46R068B Folha de dados(HTML) 43 Page - Holtek Semiconductor Inc

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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


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