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Rev. 1.50 190 August 28, 2017 Rev. 1.50 191 August 28, 2017

HT66F0175/HT66F0185

A/D Flash MCU with EEPROM

HT66F0175/HT66F0185

A/D Flash MCU with EEPROM

Mnemonic Description Cycles Flag Affected

Data Move

MOV A,[m] Move Data Memory to ACC 1 None

MOV [m],A Move ACC to Data Memory 1

Note

None

MOV A,x Move immediate data to ACC 1 None

Bit Operation

CLR [m].i Clear bit of Data Memory 1

Note

None

SET [m].i Set bit of Data Memory 1

Note

None

Branch Operation

JMP addr Jump unconditionally 2 None

SZ [m] Skip if Data Memory is zero 1

Note

None

SZA [m] Skip if Data Memory is zero with data movement to ACC 1

Note

None

SZ [m].i Skip if bit i of Data Memory is zero 1

Note

None

SNZ [m].i Skip if bit i of Data Memory is not zero 1

Note

None

SIZ [m] Skip if increment Data Memory is zero 1

Note

None

SDZ [m] Skip if decrement Data Memory is zero 1

Note

None

SIZA [m] Skip if increment Data Memory is zero with result in ACC 1

Note

None

SDZA [m] Skip if decrement Data Memory is zero with result in ACC 1

Note

None

CALL addr Subroutine call 2 None

RET Return from subroutine 2 None

RET A,x Return from subroutine and load immediate data to ACC 2 None

RETI Return from interrupt 2 None

Table Read Operation

TABRD [m] Read table (specic page) to TBLH and Data Memory 2

Note

None

TABRDC [m] Read table (current page) to TBLH and Data Memory 2

Note

None

TABRDL [m] Read table (last page) to TBLH and Data Memory 2

Note

None

Miscellaneous

NOP No operation 1 None

CLR [m] Clear Data Memory 1

Note

None

SET [m] Set Data Memory 1

Note

None

CLR WDT Clear Watchdog Timer 1 TO, PDF

CLR WDT1 Pre-clear Watchdog Timer 1 TO, PDF

CLR WDT2 Pre-clear Watchdog Timer 1 TO, PDF

SWAP [m] Swap nibbles of Data Memory 1

Note

None

SWAPA [m] Swap nibbles of Data Memory with result in ACC 1 None

HALT Enter power down mode 1 TO, PDF

Note:1.Forskipinstructions,iftheresultofthecomparisoninvolvesaskipthentwocyclesarerequired,ifno

skiptakesplaceonlyonecycleisrequired.

2.AnyinstructionwhichchangesthecontentsofthePCLwillalsorequire2cyclesforexecution.

3.Forthe“CLRWDT1”and“CLRWDT2”instructionstheTOandPDFflagsmaybeaffectedbythe

executionstatus.TheTOandPDFflagsareclearedafterboth“CLRWDT1”and“CLRWDT2”

instructionsareconsecutivelyexecuted.OtherwisetheTOandPDFagsremainunchanged.

Brand	Holtek
Model	HT66F0175
Category	Storage
Language	English

Holtek HT66F0175 User Manual

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Holtek HT66F0175 Specifications