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HT46R004 Fiches technique(PDF) 30 Page - Holtek Semiconductor Inc

No de pièce HT46R004
Description  Cost-Effective A/D 8-Bit OTP MCU
Download  84 Pages
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Fabricant  HOLTEK [Holtek Semiconductor Inc]
Site Internet  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT46R004 Fiches technique(HTML) 30 Page - Holtek Semiconductor Inc

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Rev. 1.30
30
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HT46R004
Cost-Effective A/D 8-Bit OTP MCU
Reset Initial Conditions
Thedifferenttypesofresetdescribedaffecttheresetflagsindifferentways.Theseflags,known
asPDFandTOarelocatedinthestatusregisterandarecontrolledbyvariousmicrocontroller
operations,suchastheSleepModefunctionorWatchdogTimer.Theresetflagsareshowninthe
table:
TO
PDF
RESET Conditions
0
0
Powe�-on �eset
RES o� LVR �eset d��ing NORMAL Mode ope�ation
1
WDT time-o�t �eset d��ing NORMAL Mode ope�ation
1
1
WDT time-o�t �eset d��ing Sleep Mode ope�ation
Note: “�” stands fo� �nchanged
Thefollowingtableindicatesthewayinwhichthevariouscomponentsofthemicrocontrollerare
affectedafterapower-onresetoccurs.
Item
Condition After RESET
P�og�am Co�nte�
Reset to ze�o
Inte���pts
All inte���pts will be disabled
WDT
Clea� afte� �eset� WDT begins co�nting
Time�/Event Co�nte�
Time� Co�nte� will be t��ned off
Inp�t/O�tp�t Po�ts
I/O po�ts will be set as inp�ts
Stack Pointe�
Stack Pointe� will point to the top of the stack
Thedifferentkindsofresetsallaffecttheinternalregistersofthemicrocontrollerindifferentways.
Toensurereliablecontinuationofnormalprogramexecutionafteraresetoccurs,itisimportantto
knowwhatconditionthemicrocontrollerisinafteraparticularresetoccurs.Thefollowingtable
describeshoweachtypeofresetaffectsthemicrocontrollerinternalregisters.


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