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HT45F3W Datasheet(PDF) 42 Page - Holtek Semiconductor Inc |
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HT45F3W Datasheet(HTML) 42 Page - Holtek Semiconductor Inc |
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42 / 167 page  Rev. 1.50 4� De�e��e� 01� �01� Rev. 1.50 43 De�e��e� 01� �01� HT45F3W R-Type Blood Pressure Meter Flash MCU HT45F3W R-Type Blood Pressure Meter Flash MCU EED Register Bit 7 6 5 4 3 2 1 0 Na�e D7 D� D5 D4 D3 D� D1 D0 R/W R/W R/W R/W R/W R/W R/W R/W R/W POR x x x x x x x x “x” unknown Bit7~0 D7~D0:DataEEPROMdata DataEEPROMdatabit7~bit0 EEC Register Bit 7 6 5 4 3 2 1 0 Na�e — — — — WREN WR RDEN RD R/W — — — — R/W R/W R/W R/W POR — — — — 0 0 0 0 Bit7~4 Unimplemented,readas“0” 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”atthesametimeinone instruction.TheWRandRDcannotbesetto“1”atthesametime. |
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