HT66F017L datasheet(21/128 Pages) HOLTEK

21 / 128 page

Rev. 1.00

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Rev. 1.00

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HT66F016L/HT66F017L

0.9V Battery Flash A/D Type 8-Bit MCU

VD D

IC PD A

IC PC K

VS S

To o th er C ir cu it

PA 2

PA 7

VSS

VD D

Wr it er

Co nnec to r Si gnal s

MC U

Pr og ra mm in g Pi ns

Note:*mayberesistororcapacitor.Theresistanceof*mustbegreater

than1kΩorthecapacitanceof*mustbelessthan1nF.

On-Chip Debug Support – OCDS

ThereisanEVchipwhichisusedtoemulatetheHT66F01xLdevicesseries.TheEVchipdevice

alsoprovidesan“On-ChipDebug”functiontodebugthedevicesduringthedevelopmentprocess.

TheEVchipandtheactualMCUdevicesarealmostfunctionallycompatibleexceptfor“On-

ChipDebug”function.UserscanusetheEVchipdevicetoemulatetherealchipdevicebehavior

byconnectingtheOCDSDAandOCDSCKpinstotheHoltekHT-IDEdevelopmenttools.The

OCDSDApinistheOCDSData/Addressinput/outputpinwhiletheOCDSCKpinistheOCDS

clockinputpin.WhenusersusetheEVchipfordebugging,otherfunctionswhicharesharedwith

theOCDSDAandOCDSCKpinsintheactualMCUdevicewillhavenoeffectintheEVchip.

However,thetwoOCDSpinswhicharepin-sharedwiththeICPprogrammingpinsarestillused

astheFlashMemoryprogrammingpinsforICP.FormoredetailedOCDSinformation,refertothe

correspondingdocumentnamed“Holteke-Linkfor8-bitMCUOCDSUser’sGuide”.

Holtek e-Link Pins

EV Chip Pins

Pin Description

OCDSDA

On-Chip Deb�g S�pport Data/Address inp�t/o�tp�t

OCDSCK

On-Chip Deb�g S�pport C�ock inp�t

VDD

Power S�pp��

GND

VSS

Gro�nd

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