HT45F39 datasheet(45/102 Pages) HOLTEK

45 / 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

A/D Input/Output Structure

Timer Modules – TM

Oneofthemostfundamentalfunctionsinanymicrocontrollerdeviceistheabilitytocontroland

measuretime.ToimplementtimerelatedfunctionseachdeviceincludesseveralTimerModules,

abbreviatedtothenameTM.TheTMsaremulti-purposetimingunitsandservetoprovide

operationssuchasTimer/Counter,InputCapture,CompareMatchOutputandSinglePulseOutput

aswellasbeingthefunctionalunitforthegenerationofPWMsignals.EachoftheTMshastwo

individualinterrupts.TheadditionofinputandoutputpinsforeachTMensuresthatusersare

providedwithtimingunitswithawideandflexiblerangeoffeatures.

ThecommonfeaturesofthedifferentTMtypesaredescribedherewithmoredetailedinformation

providedintheindividualCompactandStandardTMsections.

Introduction

ThedevicescontaintwoTMshavingareferencenameofTM0andTM1,whichcanbecategorised

asacertaintype,namelyCompactTypeTM.Althoughsimilarinnature,thedifferentTMtypes

varyintheirfeaturecomplexity.ThedetailedoperationregardingeachoftheTMtypeswillbe

describedinseparatesections.ThemainfeaturesanddifferencesbetweenthetwotypesofTMsare

summarisedintheaccompanyingtable.

Function

CTM

Timer/Counter

Compare Match Output

PWM Channels

PWM Alignment

Edge

PWM Adjustment Period & Duty

Duty or Period

TM Function Summary

HT45F39 Datasheet(PDF) 45 Page - Holtek Semiconductor Inc