HT69F360 datasheet(103/235 Pages) HOLTEK

103 / 235 page

Rev. 1.30

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Rev. 1.30

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HT69F340/HT69F350/HT69F360

TinyPowerTM I/O Flash MCU with LCD & EEPROM

HT69F340/HT69F350/HT69F360

TinyPowerTM I/O Flash MCU with LCD & EEPROM

I/O Pin Structures

TheaccompanyingdiagramsillustratetheinternalstructuresofsomegenericI/Opintypes.As

theexactlogicalconstructionoftheI/Opinwilldifferfromthesedrawings,theyaresuppliedasa

guideonlytoassistwiththefunctionalunderstandingoftheI/Opins.Thewiderangeofpin-shared

structuresdoesnotpermitalltypestobeshown.

V DD

Wa ke - up Se le ct

S yst em W ak e- up

R ead Da ta R egi st er

Co nt ro l Bi t

Da ta B us

Wr it e C ont ro l Re gi st er

Ch ip R es et

Re ad C on tr ol R eg is te r

Wr it e Da ta R egi st er

Da ta B it

I/ O pi n

We ak

Pu ll- up

Pu ll- Hi gh

Re gi st er

Se le ct

PA o nl y

Generic Input/Output Structure

Programming Considerations

Withintheuserprogram,oneofthefirstthingstoconsiderisportinitialisation.Afterareset,all

oftheI/Odataandportcontrolregisterswillbesethigh.ThismeansthatallI/Opinswilldefault

toaninputstate,thelevelofwhichdependsontheotherconnectedcircuitryandwhetherpull-

highselectionshavebeenchosen.Iftheportcontrolregistersarethenprogrammedtosetupsome

pinsasoutputs,theseoutputpinswillhaveaninitialhighoutputvalueunlesstheassociatedport

dataregistersarefirstprogrammed.Selectingwhichpinsareinputsandwhichareoutputscanbe

achievedbyte-widebyloadingthecorrectvaluesintotheappropriateportcontrolregisterorby

programmingindividualbitsintheportcontrolregisterusingthe“SET[m].i”and“CLR[m].i”

instructions.Notethatwhenusingthesebitcontrolinstructions,aread-modify-writeoperationtakes

place.Themicrocontrollermustfirstreadinthedataontheentireport,modifyittotherequirednew

bitvaluesandthenrewritethisdatabacktotheoutputports.

PortAhastheadditionalcapabilityofprovidingwake-upfunctions.Whenthedeviceisinthe

SLEEPorIDLEMode,variousmethodsareavailabletowakethedeviceup.Oneoftheseisahigh

tolowtransitionofanyofthePortApins.SingleormultiplepinsonPortAcanbesetuptohavethis

function.

HT69F360 データシート(PDF) 103 Page - Holtek Semiconductor Inc

HT69F360 データシート(HTML) 103 Page - Holtek Semiconductor Inc

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