HT66F60 datasheet(34/298 Pages) HOLTEK

34 / 298 page

Rev. 1.90

�4

�e��a�� 18� �01�

Rev. 1.90

�5

�e��a�� 18� �01�

HT66F20/HT66F30/HT66F40/HT66F50/HT66F60

HT66FU30/HT66FU40/HT66FU50/HT66FU60

Enhanced A/D Flash Type 8-Bit MCU with EEPROM

HT66F20/HT66F30/HT66F40/HT66F50/HT66F60

HT66FU30/HT66FU40/HT66FU50/HT66FU60

Enhanced A/D Flash Type 8-Bit MCU with EEPROM

In Circuit Programming – ICP

TheprovisionofFlashtypeProgramMemoryprovidestheuserwithameansofconvenientand

easyupgradesandmodificationstotheirprogramsonthesamedevice.

Asanadditionalconvenience,Holtekhasprovidedameansofprogrammingthemicrocontroller

in-circuitusinga5-pininterface.Thisprovidesmanufacturerswiththepossibilityofmanufacturing

theircircuitboardscompletewithaprogrammedorun-programmedmicrocontroller,andthen

programmingorupgradingtheprogramatalaterstage.Thisenablesproductmanufacturerstoeasily

keeptheirmanufacturedproductssuppliedwiththelatestprogramreleaseswithoutremovaland

re-insertionofthedevice.

MCU Programming Pins

Function

PA0

Se�ial Data Inp�t/O�tp�t

PA�

Se�ial Clock

RES

Device Reset

VDD

Powe� S�ppl�

VSS

G�o�nd

TheProgramMemoryandEEPROMdatamemorycanbothbeprogrammedseriallyin-circuitusing

this5-wireinterface.Dataisdownloadedanduploadedseriallyonasinglepinwithanadditional

linefortheclock.Twoadditionallinesarerequiredforthepowersupplyandonelineforthereset.

Thetechnicaldetailsregardingthein-circuitprogrammingofthedevicesarebeyondthescopeof

thisdocumentandwillbesuppliedinsupplementaryliterature.

DuringtheprogrammingprocesstheRESpinwillbeheldlowbytheprogrammerdisablingthe

normaloperationofthemicrocontrollerandtakingcontrolofthePA0andPA2I/Opinsfordata

andclockprogrammingpurposes.Theusermusttheretakecaretoensurethatnootheroutputsare

connectedtothesetwopins.

Wr it er _V DD

RE S

DA TA

CL K

Wr it er _V SS

To o t her C ir cu it

DA TA

CL K

VS S

RE S

VD D

Wr it er C onnec to r

Si g nal s

MC U Pr og ra mm in g

Pi ns

Note:*mayberesistororcapacitor.Theresistanceof*mustbegreater

than1kΩorthecapacitanceof*mustbelessthan1nF.

Programmer Pin

Pins

RES

PB0

DATA

PA0

CLK

PA�

Programmer and MCU Pins

HT66F60 Datasheet(PDF) 34 Page - Holtek Semiconductor Inc

HT66F60 Datasheet(HTML) 34 Page - Holtek Semiconductor Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL