HT66F4530 datasheet(36/224 Pages) HOLTEK

36 / 224 page

Rev. 1.00

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Rev. 1.00

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HT66F4530/HT66F4540/HT66F4550

A/D Flash MCU with Dual Operational Amplifiers

HT66F4530/HT66F4540/HT66F4550

A/D Flash MCU with Dual Operational Amplifiers

Table Read Program Example

tempreg1 db ? ; temporary register #1

tempreg2 db ? ; temporary register #2

mov a,06h

; initialise low table pointer - note that this address is referenced

mov tblp,a

; to the last page or the page that tbhp pointed

mov a,07h

; initialise high table pointer

mov tbhp,a

tabrd tempreg1 ; transfers value in table referenced by table pointer data at program

; memory address "0706H" transferred to tempreg1 and TBLH

dec tblp

; reduce value of table pointer by one

tabrd tempreg2 ; transfers value in table referenced by table pointer data at program

; memory address "0705H" transferred to tempreg2 and TBLH in this example

; the data "1AH" is transferred to tempreg1 and data "0FH" to register

; tempreg2

org 0700h

; sets initial address of program memory

dc 00Ah, 00Bh, 00Ch, 00Dh, 00Eh, 00Fh, 01Ah, 01Bh

In Circuit Programming – ICP

TheprovisionofFlashtypeProgramMemoryprovidestheuserwithameansofconvenientandeasy

upgradesandmodificationstotheirprogramsonthesamedevice.Asanadditionalconvenience,

Holtekhasprovidedameansofprogrammingthemicrocontrollerin-circuitusinga4-pininterface.

Thisprovidesmanufacturerswiththepossibilityofmanufacturingtheircircuitboardscompletewith

aprogrammedorun-programmedmicrocontroller,andthenprogrammingorupgradingtheprogram

atalaterstage.Thisenablesproductmanufacturerstoeasilykeeptheirmanufacturedproducts

suppliedwiththelatestprogramreleaseswithoutremovalandre-insertionofthesedevices.

TheHoltekFlashMCUtoWriterProgrammingPincorrespondencetableisasfollows:

Holtek Writer Pins

MCU Programming Pins

Pin Description

ICPDA

PA0

P�og�a��ing Se�ial Data/Add�ess

ICPCK

PA�

P�og�a��ing Clo�k

VDD

Powe� Supply

VSS

G�ound

TheProgramMemoryandEEPROMDataMemorycanbeprogrammedseriallyin-circuitusingthis

4-wireinterface.Dataisdownloadedanduploadedseriallyonasinglepinwithanadditionallinefor

theclock.Twoadditionallinesarerequiredforthepowersupply.Thetechnicaldetailsregardingthe

in-circuitprogrammingofthesedevicesarebeyondthescopeofthisdocumentandwillbesupplied

insupplementaryliterature.

Duringtheprogrammingprocess,theusermusttakecareoftheICPDAandICPCKpinsfordata

andclockprogrammingpurposestoensurethatnootheroutputsareconnectedtothesetwopins.

HT66F4530 데이터시트(PDF) 36 Page - Holtek Semiconductor Inc

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