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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT67F488 датащи(PDF) 34 Page - Holtek Semiconductor Inc |
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HT67F488 датащи(HTML) 34 Page - Holtek Semiconductor Inc |
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34 / 171 page  Rev. 1.60 34 �ove��e� ��� �016 HT67F488/HT67F489 TinyPowerTM A/D Flash MCU with LCD & EEPROM EED Register Bit 7 6 5 4 3 2 1 0 �a�e D7 D6 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 0 0 0 0 0 0 0 0 Bit7~0 D7~D0:DataEEPROMdata DataEEPROMdatabit7~bit0 EEC Register Bit 7 6 5 4 3 2 1 0 �a�e — — — — WRE� WR RDE� 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”atthesametimeinoneinstruction.The WRandRDcannotbesetto“1”atthesametime. |
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