HT45F5N datasheet(74/202 Pages) HOLTEK

74 / 202 page

Rev. 1.00

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Rev. 1.00

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HT45F5N/HT45FH5N

Power Bank ASSP Flash MCU

HT45F5N/HT45FH5N

Power Bank ASSP Flash MCU

TM Input/Output Pin Selection

SelectingtohaveaTMinput/outputorwhethertoretainitsothersharedfunctionisimplemented

usingtherelevantpin-sharedfunctionselectionregisters,withthecorrespondingselectionbitsin

eachpin-sharedfunctionregistercorrespondingtoaTMinput/outputpin.Configuringtheselection

bitscorrectlywillsetupthecorrespondingpinasaTMinput/output.Thedetailsofthepin-shared

functionselectionaredescribedinthePin-sharedFunctionsection.

STM

STCK

STP

CCR captu�e input

CCR output

TCK input

STM Function Pin Control Block Diagram

PTM

PTCK

PTP

CCR captu�e input

CCR output

CCR captu�e input

TCK input

PTM Function Pin Control Block Diagram

Programming Considerations

TheTMCounterRegistersandtheCapture/CompareCCRAandCCRPregisters,allhavealow

andhighbytestructure.Thehighbytescanbedirectlyaccessed,butasthelowbytescanonlybe

accessedviaaninternal8-bitbuffer,readingorwritingtotheseregisterpairsmustbecarriedoutin

aspecificway.Theimportantpointtonoteisthatdatatransfertoandfromthe8-bitbufferandits

relatedlowbyteonlytakesplacewhenawriteorreadoperationtoitscorrespondinghighbyteis

executed.

AstheCCRAandCCRPregistersareimplementedinthewayshowninthefollowingdiagram

andaccessingtheregisteriscarriedoutinaspecificwaydescribedabove,itisrecommendedto

usethe"MOV"instructiontoaccesstheCCRAandCCRPlowbyteregisters,namedxTMALand

PTMRPL,usingthefollowingaccessprocedures.AccessingtheCCRAorCCRPlowbyteregister

withoutfollowingtheseaccessprocedureswillresultinunpredictablevalues.

HT45F5N Datasheet(PDF) 74 Page - Holtek Semiconductor Inc