HT45F39 datasheet(20/102 Pages) HOLTEK

20 / 102 page

Rev. 1.10

July 01, 2016

Rev. 1.10

July 01, 2016

HT45F39/HT45F391

Ultrasonic Distance Measurement 8-bit Flash MCU

HT45F39/HT45F391

Ultrasonic Distance Measurement 8-bit Flash MCU

Wr it er _V DD

IC PD A

IC PC K

Wr it er _ VSS

To o th er C ir cu it

PA0

PA2

VSS

VD D

Wr it er C onne ct or

Si gnal s

Pr og ra mm in g Pi ns

Note:*mayberesistororcapacitor.Theresistanceof*mustbegreaterthan1korthecapacitance

of*mustbelessthan1nF.

On-Chip Debug Support – OCDS

ThereisanEVchipnamedHT45V39/HT45V391whichisusedtoemulatetherealHT45F39/HT45F391

device.TheEVchipalsoprovidesthe"On-ChipDebug"functiontodebugtherealMCUduring

developmentprocess.TherealMCUandEVchiparealmostfunctionalcompatibleexceptthe"On-

ChipDebug"functionandpackagetypes.UserscanusetheEVchiptoemulatetherealMCUdevice

behaviorsbyconnectingtheOCDSDAandOCDSCKpinstotheHoltekHT-IDEdevelopmenttools.

TheOCDSDApinistheOCDSData/Addressinput/outputpinwhiletheOCDSCKpinistheOCDS

clockinputpin.WhenusersusetheEVchipfordebugging,thecorrespondingpinfunctionsshared

withtheOCDSDAandOCDSCKpinsintherealMCUdevicewillhavenoeffectintheEVchip.

However,thetwoOCDSpinswhicharepin-sharedwiththeICPprogrammingpinsarestillused

astheFlashMemoryprogrammingpinsforICP.FormoredetailedOCDSinformation,refertothe

correspondingdocumentnamed"Holteke-Linkfor8-bitMCUOCDSUser’sGuide".

Holtek e-Link Pins

EV Chip Pins

Pin Description

OCDSDA

On-Chip Debug Support Data/Address input/output

OCDSCK

On-Chip Debug Support Clock input

VDD

Power Supply

GND

VSS

Ground

HT45F39 Datasheet(PDF) 20 Page - Holtek Semiconductor Inc

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