Rev. 1.00

18

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Rev. 1.00

19

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HT45F2002

2-Wire Communication Flash MCU

HT45F2002

2-Wire Communication Flash MCU

Mnemonic

Description

Cycles

Flag Affected

Data Move

MOV A�[m]

Move Data Memor� to ACC

1

None

MOV [m]�A

Move ACC to Data Memor�

None

MOV A�x

Move immediate data to ACC

1

None

Bit Operation

CLR [m].i

C�ear bit of Data Memor�

None

SET [m].i

Set bit of Data Memor�

None

Branch Operation

�MP addr

��mp �nconditiona���

�

None

SZ [m]

Skip if Data Memor� is zero

None

SZA [m]

Skip if Data Memor� is zero with data movement to ACC

None

SZ [m].i

Skip if bit i of Data Memor� is zero

None

SNZ [m].i

Skip if bit i of Data Memor� is not zero

None

SIZ [m]

Skip if increment Data Memor� is zero

None

SDZ [m]

Skip if decrement Data Memor� is zero

None

SIZA [m]

Skip if increment Data Memor� is zero with res��t in ACC

None

SDZA [m]

Skip if decrement Data Memor� is zero with res��t in ACC

None

CALL addr

S�bro�tine ca��

�

None

RET

Ret�rn from s�bro�tine

�

None

RET A�x

Ret�rn from s�bro�tine and �oad immediate data to ACC

�

None

RETI

Ret�rn from interr�pt

�

None

Table Read Operation

TABRD [m]

Read table (specific page) to TBLH and Data Memory

None

TABRDC [m]

Read tab�e (c�rrent page) to TBLH and Data Memor�

None

TABRDL [m]

Read tab�e (�ast page) to TBLH and Data Memor�

None

Miscellaneous

NOP

No operation

1

None

CLR [m]

C�ear Data Memor�

None

SET [m]

Set Data Memor�

None

CLR WDT

C�ear Watchdog Timer

1

TO� PDF

CLR WDT1

Pre-c�ear Watchdog Timer

1

TO� PDF

CLR WDT�

Pre-c�ear Watchdog Timer

1

TO� PDF

SWAP [m]

Swap nibb�es of Data Memor�

None

SWAPA [m]

Swap nibb�es of Data Memor� with res��t in ACC

1

None

HALT

Enter power down mode

1

TO� PDF

Note:1.Forskipinstructions,iftheresultofthecomparisoninvolvesaskipthentwocyclesarerequired,ifno

skiptakesplaceonlyonecycleisrequired.

2.AnyinstructionwhichchangesthecontentsofthePCLwillalsorequire2cyclesforexecution.

3.Forthe“CLRWDT1”and“CLRWDT2”instructionstheTOandPDFflagsmaybeaffectedbythe

executionstatus.TheTOandPDFflagsareclearedafterboth“CLRWDT1”and“CLRWDT2”

instructionsareconsecutivelyexecuted.OtherwisetheTOandPDFflagsremainunchanged.