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HT66F0182 Datasheet(PDF) 39 Page - Holtek Semiconductor Inc |
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HT66F0182 Datasheet(HTML) 39 Page - Holtek Semiconductor Inc |
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39 / 116 page  Rev. 1.00 38 De�e��e� 1�� �01� Rev. 1.00 39 De�e��e� 1�� �01� HT66F0182 A/D 8-Bit Flash MCU HT66F0182 A/D 8-Bit Flash MCU • CTRL Register Bit 7 6 5 4 3 2 1 0 Na�e FSYSON — — — — LVRF LRF WRF R/W R/W — — — — R/W R/W R/W POR 0 — — — — x 0 0 “x” unknown Bit7 FSYSON:fSYSControlinIDLEMode Describedelsewhere. Bit6~3 Unimplemented,readas“0” Bit2 LVRF:LVRfunctionresetflag 0:Notoccur 1:Occurred Thisbitissetto1whenaspecificLowVoltageResetsituationconditionoccurs.This bitcanonlybeclearedto0bytheapplicationprogram. Bit1 LRF:LVRControlregistersoftwareresetflag 0:Notoccur 1:Occurred Thisbitissetto1iftheLVRCregistercontainsanynon-definedLVRvoltageregister values.Thisineffectactslikeasoftwareresetfunction.Thisbitcanonlybeclearedto 0bytheapplicationprogram. Bit0 WRF:WDTControlregistersoftwareresetflag Describedelsewhere. Watchdog Time-out Reset during Normal Operation TheWatchdogtime-outResetduringnormaloperationisthesameasahardwareLVRresetexcept thattheWatchdogtime-outflagTOwillbesetto“1”. WDT Ti�e-out Inte�nal Reset tRSTD + tSST WDT Time-out Reset during Normal Operation Timing Chart Watchdog Time-out Reset during SLEEP or IDLE Mode TheWatchdogtime-outResetduringSLEEPorIDLEModeisalittledifferentfromotherkinds ofreset.MostoftheconditionsremainunchangedexceptthattheProgramCounterandtheStack Pointerwillbeclearedto“0”andtheTOflagwillbesetto“1”.RefertotheA.C.Characteristicsfor tSSTdetails. WDT Ti�e-out Inte�nal Reset tSST WDT Time-out Reset during Sleep Timing Chart |
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