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HT45F56 датащи(PDF) 25 Page - Holtek Semiconductor Inc |
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HT45F56 датащи(HTML) 25 Page - Holtek Semiconductor Inc |
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25 / 90 page ![]() Rev. 1.11 24 April 11, 2017 Rev. 1.11 25 April 11, 2017 HT45F56 Shock Detector Flash MCU HT45F56 Shock Detector Flash MCU EED Register Bit 7 6 5 4 3 2 1 0 Name D7 D6 D5 D4 D3 D2 D1 D0 R/W 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 Bit7~0 D7~D0:DataEEPROMdatabit7~bit0 EEC Register Bit 7 6 5 4 3 2 1 0 Name — — — — WREN WR RDEN RD R/W — — — — R/W R/W R/W R/W POR — — — — 0 0 0 0 Bit7~4 Unimplemented,readas0. Bit3 WREN:DataEEPROMwriteenable 0:Disable 1:Enable ThisistheDataEEPROMWriteEnableBitwhichmustbesethighbeforeData EEPROMwriteoperationsarecarriedout.ClearingthisbittozerowillinhibitData EEPROMwriteoperations. Bit2 WR:EEPROMwritecontrol 0:Writecyclehasfinished 1:Activateawritecycle ThisistheDataEEPROMWriteControlBitandwhensethighbytheapplication programwillactivateawritecycle.Thisbitwillbeautomaticallyresettozerobythe hardwareafterthewritecyclehasfinished.Settingthisbithighwillhavenoeffectif theWRENhasnotfirstbeensethigh. Bit1 RDEN:DataEEPROMreadenable 0:Disable 1:Enable ThisistheDataEEPROMReadEnableBitwhichmustbesethighbeforeData EEPROMreadoperationsarecarriedout.ClearingthisbittozerowillinhibitData EEPROMreadoperations. Bit0 RD:EEPROMreadcontrol 0:Readcyclehasfinished 1:Activateareadcycle ThisistheDataEEPROMReadControlBitandwhensethighbytheapplication programwillactivateareadcycle.Thisbitwillbeautomaticallyresettozerobythe hardwareafterthereadcyclehasfinished.Settingthisbithighwillhavenoeffectif theRDENhasnotfirstbeensethigh. Note:TheWREN,WR,RDENandRDcannotbesetto“1”atthesametimeinoneinstruction.The WRandRDcannotbesetto“1”atthesametime. |
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