HT45F12 datasheet(7/104 Pages) HOLTEK

7 / 104 page

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HT45F12

8-Bit Flash MCU with Op Amps & Comparators

HT45F12

8-Bit Flash MCU with Op Amps & Comparators

General Description

ThedeviceisFlashMemoryTinypowerType8-bithighperformanceRISCarchitecturemicrocontroller.

OfferinguserstheconvenienceofFlashMemorymulti-programmingfeatures,thisdevicealso

includesawiderangeoffunctionsandfeatures.OthermemoryincludesanareaofRAMData

MemoryaswellasanareaofEEPROMmemoryforstorageofnon-volatiledatasuchascalibration

dataetc.

AnalogfeaturesincludedualOperationalAmplifiers,dualComparatorsandoneinternal2.4Vor

3.3VLDO(LowDropOut)forvoltageregulator.ProtectivefeaturessuchasaninternalWatchdog

TimerandLowVoltageResetensurethatreliableoperationismaintainedinhostileelectrical

environments.

AfullchoiceofHXT,ERC,HIRCandLIRCoscillatorfunctionsareprovidedincludingafully

integratedsystemoscillatorwhichrequiresnoexternalcomponentsforitsimplementation.The

uniqueHoltekTinyPowertechnologyalsogivesthedeviceextremelylowcurrentconsumption

characteristics,anextremelyimportantconsiderationinthepresenttrendforlowpowerbattery

poweredapplications.TheusualHoltekMCUfeaturessuchaspowerdownandwake-upfunctions,

oscillatoroptions,programmablefrequencydivider,etc.combinetoensureuserapplicationsrequire

aminimumofexternalcomponents.

TheinclusionofflexibleI/Oprogrammingfeatures,Time-Basefunctionsalongwithmanyother

featuresensurethatthedevicewillfindexcellentuseinapplicationssuchaselectronicmetering,

environmentalmonitoring,handheldinstruments,electronicallycontrolledtools,motordrivingand

manyothers.

Block Diagram

Thefollowingblockdiagramillustratesthemainfunctionalblocks.

Fl as h/ EEPR OM

Pr ogr a mmi ng

Ci rc ui tr y (I CP )

Wa tc hdog

Ti me r

8- bi t

RI SC

MC U

Co re

Re se t

Ci rc ui t

In te rr up t

Co nt ro lle r

E RC/ HX T

Os ci ll at or

LI RC

Os c ill at or

HI RC

Os ci ll at or

EEP RO M

Da ta

Me mo ry

Fl as h

Pr og ra m

Me mo ry

RA M

Da ta

Me mo ry

I/ OT im er

Co mp ar at or s

OP As

Ti me

Ba se 0/ 1

PF D/ Bu zze r

Dr iv er

LD O

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