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HT45F39 Datasheet(PDF) 90 Page - Holtek Semiconductor Inc |
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HT45F39 Datasheet(HTML) 90 Page - Holtek Semiconductor Inc |
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90 / 102 page  Rev. 1.10 90 July 01, 2016 Rev. 1.10 91 July 01, 2016 HT45F39/HT45F391 Ultrasonic Distance Measurement 8-bit Flash MCU HT45F39/HT45F391 Ultrasonic Distance Measurement 8-bit Flash MCU 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 1Note None MOV A,x Move immediate data to ACC 1 None Bit Operation CLR [m].i Clear bit of Data Memory 1Note None SET [m].i Set bit of Data Memory 1Note None Branch JMP addr Jump unconditionally 2 None SZ [m] Skip if Data Memory is zero 1Note None SZA [m] Skip if Data Memory is zero with data movement to ACC 1Note None SZ [m].i Skip if bit i of Data Memory is zero 1Note None SNZ [m].i Skip if bit i of Data Memory is not zero 1Note None SIZ [m] Skip if increment Data Memory is zero 1Note None SDZ [m] Skip if decrement Data Memory is zero 1Note None SIZA [m] Skip if increment Data Memory is zero with result in ACC 1Note None SDZA [m] Skip if decrement Data Memory is zero with result in ACC 1Note 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 TABRD [m] Read table to TBLH and Data Memory 2Note None TABRDL [m] Read table (last page) to TBLH and Data Memory 2Note None Miscellaneous NOP No operation 1 None CLR [m] Clear Data Memory 1Note None SET [m] Set Data Memory 1Note 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 1Note None SWAPA [m] Swap nibbles of Data Memory with result 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. |
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