HT45FH4M
Lithium Battery Backup Power ASSP MCU
General Description
TheꢀdeviceꢀisꢀaꢀFlashꢀMemoryꢀtypeꢀ8-bitꢀhighꢀperformanceꢀRISCꢀarchitectureꢀmicrocontroller.ꢀ
OfferingꢀusersꢀtheꢀconvenienceꢀofꢀFlashꢀMemoryꢀmulti-programmingꢀfeatures,ꢀthisꢀdeviceꢀalsoꢀ
includesꢀaꢀwideꢀrangeꢀofꢀfunctionsꢀandꢀfeatures.ꢀOtherꢀmemoryꢀincludesꢀanꢀareaꢀofꢀRAMꢀDataꢀ
MemoryꢀasꢀwellꢀasꢀanꢀareaꢀofꢀEEPROMꢀmemoryꢀforꢀstorageꢀofꢀnon-volatileꢀdataꢀsuchꢀasꢀserialꢀ
numbers,ꢀcalibrationꢀdataꢀetc.
Analogꢀfeaturesꢀincludeꢀaꢀmulti-channelꢀ12-bitꢀA/Dꢀconverter,ꢀanꢀoverꢀvoltageꢀprotectionꢀfunction,ꢀ
anꢀoverꢀcurrentꢀprotectionꢀfunctionꢀandꢀaꢀLDOꢀregulator.ꢀMultipleꢀandꢀextremelyꢀflexibleꢀTimerꢀ
Modulesꢀprovideꢀtiming,ꢀpulseꢀgenerationꢀandꢀPWMꢀgenerationꢀfunctions.ꢀProtectiveꢀfeaturesꢀsuchꢀ
asꢀanꢀinternalꢀWatchdogꢀTimer,ꢀLowꢀVoltageꢀResetꢀandꢀLowꢀVoltageꢀDetectorꢀcoupledꢀwithꢀexcellentꢀ
noiseꢀimmunityꢀandꢀESDꢀprotectionꢀensureꢀthatꢀreliableꢀoperationꢀisꢀmaintainedꢀinꢀhostileꢀelectricalꢀ
environments.
AꢀfullꢀchoiceꢀofꢀHIRCꢀandꢀLIRCꢀoscillatorꢀfunctionsꢀareꢀprovidedꢀincludingꢀaꢀfullyꢀintegratedꢀ
systemꢀoscillatorꢀwhichꢀrequiresꢀnoꢀexternalꢀcomponentsꢀforꢀitsꢀimplementation.ꢀTheꢀabilityꢀtoꢀ
operateꢀandꢀswitchꢀdynamicallyꢀbetweenꢀaꢀrangeꢀofꢀoperatingꢀmodesꢀusingꢀdifferentꢀclockꢀsourcesꢀ
givesꢀusersꢀtheꢀabilityꢀtoꢀoptimiseꢀmicrocontrollerꢀoperationꢀandꢀminimizeꢀpowerꢀconsumption.
TheꢀinclusionꢀofꢀflexibleꢀI/Oꢀprogrammingꢀfeatures,ꢀTime-Baseꢀfunctionsꢀalongꢀwithꢀmanyꢀotherꢀ
featuresꢀensureꢀthatꢀtheꢀdeviceꢀwillꢀfindꢀexcellentꢀuseꢀinꢀapplicationsꢀsuchꢀasꢀelectronicꢀmetering,ꢀ
environmentalꢀmonitoring,ꢀhandheldꢀinstruments,ꢀhouseholdꢀappliances,ꢀelectronicallyꢀcontrolledꢀ
tools,ꢀmotorꢀdrivingꢀinꢀadditionꢀtoꢀmanyꢀothers.
Block Diagram
OVP
Rev. 1.10
7
�anꢀaꢁꢂ 1ꢃꢄ ꢅ01ꢆ
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
