HT68F005 datasheet(19/93 Pages) HOLTEK

19 / 93 page

Rev. 1.00

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Rev. 1.00

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HT68F005/HT68F006

Enhanced I/O Flash Type MCU

HT68F005/HT68F006

Enhanced I/O Flash Type MCU

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

PA7

VSS

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*mustbegreater

than1kΩorthecapacitanceof*mustbelessthan1nF.

On-Chip Debug Support – OCDS

ThereisanEVchipwhichisusedtoemulatetheHT68F00xdeviceseries.TheEVchipdevice

alsoprovidesan“On-ChipDebug”functiontodebugthedevicesduringthedevelopmentprocess.

TheEVchipandtheactualMCUdevicesarealmostfunctionallycompatibleexceptfor“On-Chip

Debug”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

�CDSDA

�n-Chip De�ug Suppo�t Data/Add�ess input/output

�CDSCK

�n-Chip De�ug Suppo�t Clo�k input

VDD

Powe� Supply

GND

VSS

G�ound

HT68F005 Datasheet(PDF) 19 Page - Holtek Semiconductor Inc

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