HT45F3830 datasheet(22/149 Pages) HOLTEK

22 / 149 page

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HT45F3830

Ultrasonic Atomizer Flash MCU

HT45F3830

Ultrasonic Atomizer Flash MCU

In Circuit Programming

TheprovisionofFlashtypeProgramMemoryprovidestheuserwithameansofconvenientandeasy

upgradesandmodificationstotheirprogramsonthesamedevice.Asanadditionalconvenience,

Holtekhasprovidedameansofprogrammingthemicrocontrollerin-circuitusinga4-pininterface.

Thisprovidesmanufacturerswiththepossibilityofmanufacturingtheircircuitboardscompletewith

aprogrammedorun-programmedmicrocontroller,andthenprogrammingorupgradingtheprogram

atalaterstage.Thisenablesproductmanufacturerstoeasilykeeptheirmanufacturedproducts

suppliedwiththelatestprogramreleaseswithoutremovalandre-insertionofthedevice.

TheHoltekFlashMCUtoWriterProgrammingPincorrespondencetableisasfollows:

Holtek Write Pins

MCU Programming Pins

Function

ICPDA

PA0

P�og�amming Se�ial Data/Add�ess

ICPCK

PA�

P�og�amming Clock

VDD

Powe� S�ppl�

VSS

G�o�nd

TheProgramMemoryandEEPROMdatamemorycanbothbeprogrammedseriallyin-circuitusing

this4-wireinterface.Dataisdownloadedanduploadedseriallyonasinglepinwithanadditional

linefortheclock.Twoadditionallinesarerequiredforthepowersupply.Thetechnicaldetails

regardingthein-circuitprogrammingofthedevicearebeyondthescopeofthisdocumentandwill

besuppliedinsupplementaryliterature.

Duringtheprogrammingprocess,theusermusttakecareoftheICPDAandICPCKpinsfordata

andclockprogrammingpurposetoensurethatnootheroutputsareconnectedtothesetwopins.

Wr it er _V DD

IC PD A

IC PC K

Wr it er _V SS

To o th er C ir cu it

PA 0

PA2

VS S

VD D

Wr it er C onne ct or

Si gnal s

MC U Pr og ra mm in g

Pi ns

Note:*mayberesistororcapacitor.Theresistanceof*mustbegreaterthan1kΩorthecapacitance

of*mustbelessthan1nF.

On-Chip Debug Support – OCDS

ThedevicehasanEVchipnamedHT45V3830whichisusedtoemulatetheHT45F3830device.

ThisEVchipdevicealsoprovidesan"On-ChipDebug"functiontodebugtherealMCUdevice

duringthedevelopmentprocess.TheEVchipandtherealMCUdevicearealmostfunctionally

compatibleexceptforthe"On-ChipDebug"function.UserscanusetheEVchipdevicetoemulate

therealchipdevicebehaviorbyconnectingtheOCDSDAandOCDSCKpinstotheHoltekHT-

IDEdevelopmenttools.TheOCDSDApinistheOCDSData/Addressinput/outputpinwhilethe

OCDSCKpinistheOCDSclockinputpin.WhenusersusetheEVchipfordebugging,other

HT45F3830 Datasheet(PDF) 22 Page - Holtek Semiconductor Inc

HT45F3830 Datasheet(HTML) 22 Page - Holtek Semiconductor Inc

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