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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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HT67F488 bảng dữ liệu(PDF) 55 Page - Holtek Semiconductor Inc |
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HT67F488 bảng dữ liệu(HTML) 55 Page - Holtek Semiconductor Inc |
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55 / 171 page  Rev. 1.60 55 �ove��e� ��� �016 HT67F488/HT67F489 TinyPowerTM A/D Flash MCU with LCD & EEPROM Reset Initial Conditions Thedifferenttypesofresetdescribedaffecttheresetflagsindifferentways.Theseflags,known asPDFandTOarelocatedinthestatusregisterandarecontrolledbyvariousmicrocontroller operations,suchastheSLEEPorIDLEModefunctionorWatchdogTimer.Theresetflagsare showninthetable: TO PDF Reset Conditions 0 0 Powe�-on �eset u u LVR �eset du�ing �o��al o� SLOW Mode ope�ation 1 u WDT ti�e-out �eset du�ing �o��al o� SLOW Mode ope�ation 1 1 WDT ti�e-out �eset du�ing IDLE o� SLEEP Mode ope�ation �ote: “u” stands fo� unchanged Thefollowingtableindicatesthewayinwhichthevariouscomponentsofthemicrocontrollerare affectedafterapower-onresetoccurs. Item Condition after Reset P�og�a� Counte� Reset to ze�o Inte��upts All inte��upts will �e disa�led WDT Clea� afte� �eset� WDT �egins counting Ti�e�/Event Counte� Ti�e� Counte� will �e tu�ned off Input/Output Po�ts I/O po�ts will �e setup as inputs and A�0~A�9 as A/D input pins Stack Pointe� Stack Pointe� will point to the top of the stack Thedifferentkindsofresetsallaffecttheinternalregistersofthemicrocontrollerindifferentways. Toensurereliablecontinuationofnormalprogramexecutionafteraresetoccurs,itisimportantto knowwhatconditionthemicrocontrollerisinafteraparticularresetoccurs.Thefollowingtable describeshoweachtypeofresetaffectseachofthemicrocontrollerinternalregisters.Notethat wheremorethanonepackagetypeexiststhetablewillreflectthesituationforthelargerpackage type. Register Power On Reset LVR Reset WDT Time-out (Normal Operation) WDT Time-out (HALT) IAR0 xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu MP0 xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu IAR1 xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu MP1L xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu MP1H xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu IAR� xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu MP�L xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu MP�H xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu ACC xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu PCL 0000 0000 0000 0000 0000 0000 0000 0000 TBLP xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu TBLH xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu TBHP ---x xxxx ---u uuuu ---u uuuu ---u uuuu STATUS xx00 xxxx uuuu uuuu uu1u uuuu uu11 uuuu SMOD 000- 0011 000- 0011 000- 0011 uuu- uuuu LVDC --00 -000 --00 -000 --00 -000 --uu -uuu LVRC 0101 0101 0101 0101 0101 0101 uuuu uuuu CTRL 0--- 0x00 0--- uuuu 0--- uuuu 0--- uuuu I�TEG 0000 0000 0000 0000 0000 0000 uuuu uuuu |
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