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HT45F2002

2-Wire Communication Flash MCU

HT45F2002

2-Wire Communication Flash MCU

RRA [m]

RotateDataMemoryrightwithresultinACC

Description

DatainthespecifiedDataMemoryisrotatedrightby1bitwithbit0

rotatedintobit7.TherotatedresultisstoredintheAccumulatorandthecontentsofthe

DataMemoryremainunchanged.

Operation

ACC.i←[m].(i+1);(i=0~6)

ACC.7←[m].0

Affectedflag(s)

None

RRC [m]

RotateDataMemoryrightthroughCarry

Description

ThecontentsofthespecifiedDataMemoryandthecarryflagarerotatedrightby1bit.Bit0

replacestheCarrybitandtheoriginalcarryflagisrotatedintobit7.

Operation

[m].i←[m].(i+1);(i=0~6)

[m].7←C

C←[m].0

Affectedflag(s)

C

RRCA [m]

RotateDataMemoryrightthroughCarrywithresultinACC

Description

DatainthespecifiedDataMemoryandthecarryflagarerotatedrightby1bit.Bit0replaces

theCarrybitandtheoriginalcarryflagisrotatedintobit7.Therotatedresultisstoredinthe

AccumulatorandthecontentsoftheDataMemoryremainunchanged.

Operation

ACC.i←[m].(i+1);(i=0~6)

ACC.7←C

C←[m].0

Affectedflag(s)

C

SBC A,[m]

SubtractDataMemoryfromACCwithCarry

Description

ThecontentsofthespecifiedDataMemoryandthecomplementofthecarryflagare

subtractedfromtheAccumulator.TheresultisstoredintheAccumulator.Notethatifthe

resultofsubtractionisnegative,theCflagwillbeclearedto0,otherwiseiftheresultis

positiveorzero,theCflagwillbesetto1.

Operation

ACC←ACC−[m]−C

Affectedflag(s)

OV,Z,AC,C

SBCM A,[m]

SubtractDataMemoryfromACCwithCarryandresultinDataMemory

Description

ThecontentsofthespecifiedDataMemoryandthecomplementofthecarryflagare

subtractedfromtheAccumulator.TheresultisstoredintheDataMemory.Notethatifthe

resultofsubtractionisnegative,theCflagwillbeclearedto0,otherwiseiftheresultis

positiveorzero,theCflagwillbesetto1.

Operation

[m]←ACC−[m]−C

Affectedflag(s)

OV,Z,AC,C

SDZ [m]

SkipifdecrementDataMemoryis0

Description

ThecontentsofthespecifiedDataMemoryarefirstdecrementedby1.Iftheresultis0the

followinginstructionisskipped.Asthisrequirestheinsertionofadummyinstructionwhile

thenextinstructionisfetched,itisatwocycleinstruction.Iftheresultisnot0theprogram

proceedswiththefollowinginstruction.

Operation

[m]←[m]−1

Skipif[m]=0

Affectedflag(s)

None