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MCP809,MCP810

www.ti.com

SNVS165A–JUNE2001–REVISEDMAY2013

MCP809/MCP8103-PinMicroprocessorResetCircuits

CheckforSamples:MCP809,MCP810

1

FEATURES

DESCRIPTION

TheMCP809/810microprocessorsupervisorycircuits

2

•PreciseMonitoringof3V,3.3V,and5VSupply

canbeusedtomonitorthepowersuppliesin

Voltages

microprocessoranddigitalsystems.Theyprovidea

•Fullyspecifiedovertemperature

resettothemicroprocessorduringpower-up,power-

•140msmin.Power-OnResetPulseWidth,

downandbrown-outconditions.

240msTypical

ThefunctionoftheMCP809/810istomonitortheV

CC

–Active-lowRESETOutput(MCP809)

supplyvoltage,andassertaresetsignalwhenever

thisvoltagedeclinesbelowthefactory-programmed

–Active-highRESETOutput(MCP810)

resetthreshold.Theresetsignalremainsassertedfor

•SpecifiedRESETOutputValidforV

CC

≥1V

240msafterV

CC

risesabovethethreshold.The

•LowSupplyCurrent,15µAtypical

MCP809hasanactive-lowRESEToutput,whilethe

MCP810hasanactive-highRESEToutput.

•Powersupplytransientimmunity

Sevenstandardresetvoltageoptionsareavailable,

APPLICATIONS

suitableformonitoring5V,3.3V,and3Vsupply

voltages.

•MicroprocessorSystems

•Computers

Withalowsupplycurrentofonly15µA,the

MCP809/810areidealforuseinportableequipment.

•Controllers

TheMCP809/MCP810areavailableinthe3-pin

•IntelligentInstruments

SOT23package.

•Portable/Battery-PoweredEquipment

•Automotive

TypicalApplicationCircuit

Figure1.TypicalApplicationCircuit

ConnectionDiagram

Figure2.()areforMCP810

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2001–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Produktspecifikationer