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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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HT45R4U Fiches technique(PDF) 69 Page - Holtek Semiconductor Inc |
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HT45R4U Fiches technique(HTML) 69 Page - Holtek Semiconductor Inc |
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69 / 105 page  Rev. 1.10 68 �a��� 1�� �01� Rev. 1.10 69 �a��� 1�� �01� HT45R4U TinyPowerTM A/D Type e-Banking ASSP OTP MCU with LCD • LVRC Register Bit 7 6 5 4 3 2 1 0 Name LVS7 LVS6 LVS� LVS4 LVS3 LVS� LVS1 LVS0 R/W R/W R/W R/W R/W R/w R/w R/W R/W POR 0 1 0 1 0 1 0 1 Bit7~0 LVS7~LVS0:LVRvoltageselect 01010101:2.1V 00110011:2.1V 10011001:2.1V 10101010:2.1V Anyothervalues:GeneratesMCUreset–registerisresettoPORvalue Whenanactuallowvoltageconditionoccurs,asspecifiedbythedefinedLVRvoltage valuesabove,anMCUresetwillbegenerated.Theresetoperationwillbeactivated after2~3fLIRCclockcycles.Inthissituationtheregistercontentswillremainthesame aftersucharesetoccurs. Anyregistervalue,otherthanthefourdefinedregistervaluesabove,willalsoresultin thegenerationofanMCUreset.Theresetoperationwillbeactivatedafter2~3fLIRCclock cycles.HoweverinthissituationtheregistercontentswillberesettothePORvalue. • SMOD1 Register Bit 7 6 5 4 3 2 1 0 Name 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:notoccurred 1:occurred Thisbitissetto1whenaspecificLowVoltageResetsituationconditionoccurs.This bitcanonlybeclearedto0bytheapplicationprogram. Bit1 LRF:LVRControlregistersoftwareresetflag 0:notoccurred 1:occurred Thisbitissetto1iftheLVRCregistercontainsanynondefinedLVRvoltageregister values.Thisineffectactslikeasoftware-resetfunction.Thisbitcanonlybeclearedto 0bytheapplicationprogram. bit0 WRF:WDTControlregistersoftwareresetflag Describedelsewhere. Watchdog Time-out Reset during Normal Operation TheWatchdogtime-outResetduringnormaloperationisthesameasahardwareRESpinreset exceptthattheWatchdogtime-outflagTOwillbesetto″1″. WD T Ti me - out SS T Ti me - out Ch ip R es et t RS TD WDT Time-out Reset during Normal Operation Timing Chart |
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Description similaire - HT45R4U |
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