HT69F360 datasheet(91/235 Pages) HOLTEK

91 / 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

Pull-high Resistors

Manyproductapplicationsrequirepull-highresistorsfortheirswitchinputsusuallyrequiringthe

useofanexternalresistor.Toeliminatetheneedfortheseexternalresistors,allI/Opins,when

configuredasaninputhavethecapabilityofbeingconnectedtoaninternalpull-highresistor.These

pull-highresistorsareselectedusingregisterPAPU~PHPU,andareimplementedusingweakPMOS

transistors.

Theseriesofdevicesprovidetworesistorselections,whichcanbe60kΩinnormalvoltagemode

or15kΩinlowvoltagemode.TheresistorselectionisexecutedusingtheLVPUbitintheLVDC

LVPU Bit

Pull-high Resistor

60kΩ (Normal Mode)

15kΩ (Low voltage Mode)

Port A Wake-up

TheHALTinstructionforcesthemicrocontrollerintotheSLEEPorIDLEModewhichpreserves

power,afeaturethatisimportantforbatteryandotherlow-powerapplications.Variousmethods

existtowake-upthemicrocontroller,oneofwhichistochangethelogicconditionononeofthePort

Apinsfromhightolow.Thisfunctionisespeciallysuitableforapplicationsthatcanbewokenup

viaexternalswitches.EachpinonPortAcanbeselectedindividuallytohavethiswake-upfeature

usingthePAWUregister.

PAWU Register

Bit

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PAWU7

PAWU�

PAWU5

PAWU4

PAWU3

PAWU�

PAWU1

PAWU0

R/W

POR

Bit7~0

I/OPortAbit7~bit0WakeUpControl

0:Disable

1:Enable

I/O Port Control Registers

EachI/OporthasitsowncontrolregisterknownasPAC~PHC,tocontroltheinput/output

configuration.Withthiscontrolregister,eachI/Opinwithorwithoutpull-highresistorscanbe

reconfigureddynamicallyundersoftwarecontrol.EachpinoftheI/Oportsisdirectlymappedtoa

bitinitsassociatedportcontrolregister.FortheI/Opintofunctionasaninput,thecorresponding

bitofthecontrolregistermustbewrittenasa“1”.Thiswillthenallowthelogicstateoftheinput

pintobedirectlyreadbyinstructions.Whenthecorrespondingbitofthecontrolregisteriswritten

asa“0”,theI/OpinwillbesetupasaCMOSoutput.Ifthepiniscurrentlysetupasanoutput,

instructionscanstillbeusedtoreadtheoutputregister.

However,itshouldbenotedthattheprogramwillinfactonlyreadthestatusoftheoutputdatalatch

andnottheactuallogicstatusoftheoutputpin.

HT69F360 データシート(PDF) 91 Page - Holtek Semiconductor Inc

HT69F360 データシート(HTML) 91 Page - Holtek Semiconductor Inc

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