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HT45FM2C Datasheet(PDF) 51 Page - Holtek Semiconductor Inc |
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HT45FM2C Datasheet(HTML) 51 Page - Holtek Semiconductor Inc |
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51 / 171 page  Rev. 1.10 50 �a� �0� �01� Rev. 1.10 51 �a� �0� �01� HT45FM2C Brushless DC Motor Flash Type 8-Bit MCU HT45FM2C Brushless DC Motor Flash Type 8-Bit MCU Preliminar� Reset Initial Conditions Thedifferenttypesofresetdescribedaffecttheresetflagsindifferentways.Theseflags,known asPDFandTOarelocatedinthestatusregisterandarecontrolledbyvariousmicrocontroller operations,suchastheSLEEPorIDLEModefunctionorWatchdogTimer.Theresetflagsare showninthetable: TO PDF RESET Conditions 0 0 Power-on reset u u LVR reset during NOR�AL or SLOW �ode operation 1 u WDT time-out reset during NOR�AL or SLOW �ode operation 1 1 WDT time-out reset during IDLE or SLEEP �ode operation “u” stands for unchanged Thefollowingtableindicatesthewayinwhichthevariouscomponentsofthemicrocontrollerare affectedafterapower-onresetoccurs. Item Condition After RESET Program Counter Reset to zero Interrupts All interrupts will be disabled WDT Clear after reset� WDT begins counting Timer/Event Counter T� modules will be turned off Input/Output Ports I/O ports will be setup as inputs� and AN0~AN7 is as A/D input pin. Stack Pointer Stack Pointer will point to the top of the stack Thedifferentkindsofresetsallaffecttheinternalregistersofthemicrocontrollerindifferentways. Toensurereliablecontinuationofnormalprogramexecutionafteraresetoccurs,itisimportantto knowwhatconditionthemicrocontrollerisinafteraparticularresetoccurs.Thefollowingtable describeshoweachtypeofresetaffectseachofthemicrocontrollerinternalregisters.Notethat wheremorethanonepackagetypeexiststhetablewillreflectthesituationforthelargerpackage type. Register Reset (Power On) WDT Time-out (Normal Operation) LVR Reset WDT Time-out (IDLE) �P0 xxxx xxxx xxxx xxxx xxxx xxxx uuuu uuuu �P1 xxxx xxxx xxxx xxxx xxxx xxxx uuuu uuuu BP ---- ---0 ---- ---0 ---- ---0 ---- ---u ACC xxxx xxxx uuuu uuuu xxxx xxxx uuuu uuuu PCL 0000 0000 0000 0000 0000 0000 0000 0000 TBLP xxxx xxxx uuuu uuuu xxxx xxxx uuuu uuuu TBLH -xxx xxxx -uuu uuuu -xxx xxxx -uuu uuuu TBHP ---- xxxx ---- uuuu ---- xxxx ---- uuuu STATUS --00 xxxx --1u uuuu --uu xxxx --11 uuuu S�OD 0000 0011 0000 0011 0000 0011 uuuu uuuu LVDC --00 -000 --00 -000 --00 -000 --uu –uuu LVRC 0101 0101 0101 0101 0101 0101 uuuu uuuu WDTC 0101 0011 0101 0011 0101 0011 uuuu uuuu TBC 0011 0111 0011 0111 0011 0111 uuuu uuuu INTC0 -000 0000 -000 0000 -000 0000 -uuu uuuu INTC1 0000 0000 0000 0000 0000 0000 uuuu uuuu INTC� 0000 0000 0000 0000 0000 0000 uuuu uuuu INTC� 0000 0000 0000 0000 0000 0000 uuuu uuuu �FI0 -000 -000 -000 -000 -000 -000 -uuu -uuu |
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