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HT45F2002

2-Wire Communication Flash MCU

HT45F2002

2-Wire Communication Flash MCU

RET A,x

ReturnfromsubroutineandloadimmediatedatatoACC

Description

TheProgramCounterisrestoredfromthestackandtheAccumulatorloadedwiththespecified

immediatedata.Programexecutioncontinuesattherestoredaddress.

Operation

ProgramCounter←Stack

ACC←x

Affectedflag(s)

None

RETI

Returnfrominterrupt

Description

TheProgramCounterisrestoredfromthestackandtheinterruptsarere-enabledbysettingthe

EMIbit.EMIisthemasterinterruptglobalenablebit.Ifaninterruptwaspendingwhenthe

RETIinstructionisexecuted,thependingInterruptroutinewillbeprocessedbeforereturning

tothemainprogram.

Operation

ProgramCounter←Stack

EMI←1

Affectedflag(s)

None

RL [m]

RotateDataMemoryleft

Description

ThecontentsofthespecifiedDataMemoryarerotatedleftby1bitwithbit7rotatedintobit0.

Operation

[m].(i+1)←[m].i;(i=0~6)

[m].0←[m].7

Affectedflag(s)

None

RLA [m]

RotateDataMemoryleftwithresultinACC

Description

ThecontentsofthespecifiedDataMemoryarerotatedleftby1bitwithbit7rotatedintobit0.

TherotatedresultisstoredintheAccumulatorandthecontentsoftheDataMemoryremain

unchanged.

Operation

ACC.(i+1)←[m].i;(i=0~6)

ACC.0←[m].7

Affectedflag(s)

None

RLC [m]

RotateDataMemoryleftthroughCarry

Description

ThecontentsofthespecifiedDataMemoryandthecarryflagarerotatedleftby1bit.Bit7

replacestheCarrybitandtheoriginalcarryflagisrotatedintobit0.

Operation

[m].(i+1)←[m].i;(i=0~6)

[m].0←C

C←[m].7

Affectedflag(s)

C

RLCA [m]

RotateDataMemoryleftthroughCarrywithresultinACC

Description

DatainthespecifiedDataMemoryandthecarryflagarerotatedleftby1bit.Bit7replacesthe

Carrybitandtheoriginalcarryflagisrotatedintothebit0.Therotatedresultisstoredinthe

AccumulatorandthecontentsoftheDataMemoryremainunchanged.

Operation

ACC.(i+1)←[m].i;(i=0~6)

ACC.0←C

C←[m].7

Affectedflag(s)

C

RR [m]

RotateDataMemoryright

Description

ThecontentsofthespecifiedDataMemoryarerotatedrightby1bitwithbit0rotatedintobit7.

Operation

[m].i←[m].(i+1);(i=0~6)

[m].7←[m].0

Affectedflag(s)

None