HT68F005 datasheet(47/93 Pages) HOLTEK

47 / 93 page

Rev. 1.00

��to�e� �� 01�

Rev. 1.00

��to�e� �� 01�

HT68F005/HT68F006

Enhanced I/O Flash Type MCU

HT68F005/HT68F006

Enhanced I/O Flash Type MCU

Reset Initial Conditions

Thedifferenttypesofresetdescribedaffecttheresetflagsindifferentways.Theseflags,known

asPDFandTOarelocatedinthestatusregisterandarecontrolledbyvariousmicrocontroller

operations,suchastheSLEEPorIDLEModefunctionorWatchdogTimer.Theresetflagsare

showninthetable:

PDF

RESET Conditions

Powe�-on �eset

LVR �eset du�ing N�RMAL o� SL�W Mode ope�ation

WDT time-out �eset du�ing N�RMAL o� SL�W Mode ope�ation

WDT time-out �eset du�ing IDLE o� SLEEP Mode ope�ation

“u” stands fo� un�hanged

Thefollowingtableindicatesthewayinwhichthevariouscomponentsofthemicrocontrollerare

affectedafterapower-onresetoccurs.

Item

Condition After RESET

P�og�am Counte�

Reset to ze�o

Inte��upts

All inte��upts will �e disa�led

WDT

Clea� afte� �eset� WDT �egins �ounting

Time� Modules

Time� Counte� will �e tu�ned off

Input/�utput Po�ts

I/� po�ts will �e setup as inputs

Sta�k Pointe�

Sta�k Pointe� will point to the top of the sta�k

Thedifferentkindsofresetsallaffecttheinternalregistersofthemicrocontrollerindifferentways.

Toensurereliablecontinuationofnormalprogramexecutionafteraresetoccurs,itisimportantto

knowwhatconditionthemicrocontrollerisinafteraparticularresetoccurs.Thefollowingtable

describeshoweachtypeofresetaffectseachofthemicrocontrollerinternalregisters.Notethatwhere

morethanonepackagetypeexiststhetablewillreflectthesituationforthelargerpackagetype.

HT68F005 датащи(PDF) 47 Page - Holtek Semiconductor Inc