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HT45F2002

2-Wire Communication Flash MCU

HT45F2002

2-Wire Communication Flash MCU

CALL addr

Subroutinecall

Description

Unconditionallycallsasubroutineatthespecifiedaddress.TheProgramCounterthen

incrementsby1toobtaintheaddressofthenextinstructionwhichisthenpushedontothe

stack.Thespecifiedaddressisthenloadedandtheprogramcontinuesexecutionfromthis

newaddress.Asthisinstructionrequiresanadditionaloperation,itisatwocycleinstruction.

Operation

Stack←ProgramCounter+1

ProgramCounter←addr

Affectedflag(s)

None

CLR [m]

ClearDataMemory

Description

EachbitofthespecifiedDataMemoryisclearedto0.

Operation

[m]←00H

Affectedflag(s)

None

CLR [m].i

ClearbitofDataMemory

Description

BitiofthespecifiedDataMemoryisclearedto0.

Operation

[m].i←0

Affectedflag(s)

None

CLR WDT

ClearWatchdogTimer

Description

TheTO,PDFflagsandtheWDTareallcleared.

Operation

WDTcleared

TO←0

PDF←0

Affectedflag(s)

TO,PDF

CLR WDT1

Pre-clearWatchdogTimer

Description

TheTO,PDFflagsandtheWDTareallcleared.Notethatthisinstructionworksin

conjunctionwithCLRWDT2andmustbeexecutedalternatelywithCLRWDT2tohave

effect.RepetitivelyexecutingthisinstructionwithoutalternatelyexecutingCLRWDT2will

havenoeffect.

Operation

WDTcleared

TO←0

PDF←0

Affectedflag(s)

TO,PDF

CLR WDT2

Pre-clearWatchdogTimer

Description

TheTO,PDFflagsandtheWDTareallcleared.Notethatthisinstructionworksinconjunction

withCLRWDT1andmustbeexecutedalternatelywithCLRWDT1tohaveeffect.

RepetitivelyexecutingthisinstructionwithoutalternatelyexecutingCLRWDT1willhaveno

effect.

Operation

WDTcleared

TO←0

PDF←0

Affectedflag(s)

TO,PDF

CPL [m]

ComplementDataMemory

Description

EachbitofthespecifiedDataMemoryislogicallycomplemented(1′scomplement).Bitswhich

previouslycontaineda1arechangedto0andviceversa.

Operation

[m]←[m]

Affectedflag(s)

Z