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SMSCCOM20019IPage1Rev.
09-25-07PRODUCTPREVIEWCOM20019ICostCompetitiveARCNET(ANSI878.
1)Controllerwith2Kx8On-ChipRAMDataBriefProductFeaturesNewFeatures:DataRatesupto312.
5KbpsProgrammableReconfigurationTimes28PinPLCCand48PinTQFPPackages;Lead-freeRoHSCompliantPackagesalsoAvailableIdealforIndustrial/Factory/BuildingAutomationandTransportationApplicationsDeterministic,(ANSI878.
1),TokenPassingARCNETProtocolMinimalMicrocontrollerandMediaInterfaceLogicRequiredFlexibleInterfaceForUseWithAllMicrocontrollersorMicroprocessorsAutomaticallyDetectsTypeofMicrocontrollerInterface2Kx8On-ChipDualPortRAMCommandChainingforPacketQueuingSequentialAccesstoInternalRAMSoftwareProgrammableNodeIDEight,256BytePagesAllowFourPagesTXandRXPlusScratch-PadMemoryNextIDReadableInternalClockScalerforAdjustingNetworkSpeedOperatingTemperatureRangeof-40oCto+85oCSelf-ReconfigurationProtocolSupportsupto255NodesSupportsVariousNetworkTopologies(Star,Tree,Bus.
.
.
)CMOS,Single+5VSupplyDuplicateNodeIDDetectionPowerfulDiagnosticsReceiveAllPacketsModeFlexibleMediaInterface:RS485DifferentialDriverInterfaceForLowCost,LowPower,HighReliabilityORDERINGINFORMATIONOrderNumbers:COM20019ILJPfor28pinPLCCpackage;COM20019I-DZDfor28pinPLCClead-freeRoHSCompliantpackageCOM20019I-HDfor48pinTQFPpackage;COM20019I-HTfor48pinTQFPlead-freeRoHSCompliantpackageRev.
09-25-07Page2SMSCCOM20019IPRODUCTPREVIEW80ARKAYDRIVE,HAUPPAUGE,NY11788(631)435-6000,FAX(631)273-3123Copyright2007SMSCoritssubsidiaries.
Allrightsreserved.
CircuitdiagramsandotherinformationrelatingtoSMSCproductsareincludedasameansofillustratingtypicalapplications.
Consequently,completeinformationsufficientforconstructionpurposesisnotnecessarilygiven.
Althoughtheinformationhasbeencheckedandisbelievedtobeaccurate,noresponsibilityisassumedforinaccuracies.
SMSCreservestherighttomakechangestospecificationsandproductdescriptionsatanytimewithoutnotice.
ContactyourlocalSMSCsalesofficetoobtainthelatestspecificationsbeforeplacingyourproductorder.
TheprovisionofthisinformationdoesnotconveytothepurchaserofthedescribedsemiconductordevicesanylicensesunderanypatentrightsorotherintellectualpropertyrightsofSMSCorothers.
AllsalesareexpresslyconditionalonyouragreementtothetermsandconditionsofthemostrecentlydatedversionofSMSC'sstandardTermsofSaleAgreementdatedbeforethedateofyourorder(the"TermsofSaleAgreement").
Theproductmaycontaindesigndefectsorerrorsknownasanomalieswhichmaycausetheproduct'sfunctionstodeviatefrompublishedspecifications.
Anomalysheetsareavailableuponrequest.
SMSCproductsarenotdesigned,intended,authorizedorwarrantedforuseinanylifesupportorotherapplicationwhereproductfailurecouldcauseorcontributetopersonalinjuryorseverepropertydamage.
AnyandallsuchuseswithoutpriorwrittenapprovalofanOfficerofSMSCandfurthertestingand/ormodificationwillbefullyattheriskofthecustomer.
CopiesofthisdocumentorotherSMSCliterature,aswellastheTermsofSaleAgreement,maybeobtainedbyvisitingSMSC'swebsiteathttp://www.
smsc.
com.
SMSCisaregisteredtrademarkofStandardMicrosystemsCorporation("SMSC").
Productnamesandcompanynamesarethetrademarksoftheirrespectiveholders.
SMSCDISCLAIMSANDEXCLUDESANYANDALLWARRANTIES,INCLUDINGWITHOUTLIMITATIONANYANDALLIMPLIEDWARRANTIESOFMERCHANTABILITY,FITNESSFORAPARTICULARPURPOSE,TITLE,ANDAGAINSTINFRINGEMENTANDTHELIKE,ANDANYANDALLWARRANTIESARISINGFROMANYCOURSEOFDEALINGORUSAGEOFTRADE.
INNOEVENTSHALLSMSCBELIABLEFORANYDIRECT,INCIDENTAL,INDIRECT,SPECIAL,PUNITIVE,ORCONSEQUENTIALDAMAGES;ORFORLOSTDATA,PROFITS,SAVINGSORREVENUESOFANYKIND;REGARDLESSOFTHEFORMOFACTION,WHETHERBASEDONCONTRACT;TORT;NEGLIGENCEOFSMSCOROTHERS;STRICTLIABILITY;BREACHOFWARRANTY;OROTHERWISE;WHETHERORNOTANYREMEDYOFBUYERISHELDTOHAVEFAILEDOFITSESSENTIALPURPOSE,ANDWHETHERORNOTSMSCHASBEENADVISEDOFTHEPOSSIBILITYOFSUCHDAMAGES.
SMSCCOM20019IPage3Rev.
09-25-07PRODUCTPREVIEWGeneralDescriptionSMSC'sCOM20019IisamemberofthefamilyofEmbeddedARCNETControllersfromStandardMicrosystemsCorporation.
Thedeviceisageneralpurposecommunicationscontrollerfornetworkingmicrocontrollersandintelligentperipheralsinindustrial,automotive,andembeddedcontrolenvironmentsusinganARCNETprotocolengine.
Theflexiblemicrocontrollerandmediainterfaces,eight-pagemessagesupport,andextendedtemperaturerangeoftheCOM20019Imakeittheonlytruenetworkcontrolleroptimizedforuseinindustrial,embedded,andautomotiveapplications.
UsinganARCNETprotocolengineistheidealsolutionforembeddedcontrolapplicationsbecauseitprovidesadeterministictoken-passingprotocol,ahighlyreliableandprovennetworkingscheme,andadatarateofupto312.
5KbpswhenusingtheCOM20019I.
Atoken-passingprotocolprovidespredictableresponsetimesbecauseeachnetworkeventoccurswithinapredeterminedtimeinterval,baseduponthenumberofnodesonthenetwork.
ThedeterministicnatureofARCNETisessentialinrealtimeapplications.
Theintegrationofthe2Kx8RAMbufferon-chip,theCommandChainingfeature,themaximumdatarate,andtheinternaldiagnosticsmaketheCOM20019Ithehighestperformanceembeddedcommunicationsdeviceavailable.
WithonlyoneCOM20019Iandonemicrocontroller,acompletecommunicationsnodemaybeimplemented.
Rev.
09-25-07Page4SMSCCOM20019IPRODUCTPREVIEWBlockDiagramFigure1-InternalBlockDiagramMICRO-SEQUENCERANDWORKINGREGISTERSSTATUS/COMMANDREGISTERRESETLOGICRECONFIGURATIONTIMERNODEIDLOGICOSCILLATORTX/RXLOGICADDITIONALREGISTERSADDRESSDECODINGCIRCUITRY2Kx8AD0-AD2,BUSARBITRATIONCIRCUITRYnPULSE1nPULSE2nTXENnINTRnRESETRAMA0/nMUXA1A2/BALEnRD/nDSnWR/DIRnCSD3-D7RXINXTAL1XTAL2SMSCCOM20019IPage5Rev.
09-25-07PRODUCTPREVIEWPackageOutlines28-PinPLCCPackageOutlineandParametersAA1BB1CDD1D2D3EFGR.
160-.
180.
090-.
120.
013-.
021.
026-.
032.
020-.
045.
485-.
495.
450-.
456.
390-.
430.
300REF.
050BSC.
042-.
056.
042-.
048.
025-.
045DIM28LJ.
000-.
020NOTES:Alldimensionsareininches.
Circleindicatingpin1canappearonatopsurfaceasshownonthedrawingorrightaboveitonabevelededge.
1.
2.
PINNO.
1GEJD3JD1DJB1BAA1CD2FRBasePlaneSeatingPlaneRev.
09-25-07Page6SMSCCOM20019IPRODUCTPREVIEW48-PinTQFPPackageOutlineandParametersMINNOMINALMAXREMARKA~~1.
6OverallPackageHeightA10.
050.
100.
15StandoffA21.
351.
401.
45BodyThicknessD8.
809.
009.
20XSpanD/24.
404.
504.
601/2XSpanMeasurefromCenterlineD16.
907.
007.
10XbodySizeE8.
809.
009.
10YSpanE/24.
404.
504.
601/2YSpanMeasurefromCenterlineE16.
907.
007.
10YbodySizeH0.
09~0.
20LeadFrameThicknessL0.
450.
600.
75LeadFootLengthfromCenterlineL1~1.
00~LeadLengthe0.
50BasicLeadPitchθ0o~7oLeadFootAngleW0.
17~0.
27LeadWidthR10.
08~~LeadShoulderRadiusR20.
08~0.
20LeadFootRadiusccc~~0.
0762Coplanarity(Assemblers)ccc~~0.
08Coplanarity(TestHouse)Note:ControllingUnit:millimeterMouserElectronicsAuthorizedDistributorClicktoViewPricing,Inventory,Delivery&LifecycleInformation:Microchip:COM20019I-DZD-TRCOM20019I-DZD
09-25-07PRODUCTPREVIEWCOM20019ICostCompetitiveARCNET(ANSI878.
1)Controllerwith2Kx8On-ChipRAMDataBriefProductFeaturesNewFeatures:DataRatesupto312.
5KbpsProgrammableReconfigurationTimes28PinPLCCand48PinTQFPPackages;Lead-freeRoHSCompliantPackagesalsoAvailableIdealforIndustrial/Factory/BuildingAutomationandTransportationApplicationsDeterministic,(ANSI878.
1),TokenPassingARCNETProtocolMinimalMicrocontrollerandMediaInterfaceLogicRequiredFlexibleInterfaceForUseWithAllMicrocontrollersorMicroprocessorsAutomaticallyDetectsTypeofMicrocontrollerInterface2Kx8On-ChipDualPortRAMCommandChainingforPacketQueuingSequentialAccesstoInternalRAMSoftwareProgrammableNodeIDEight,256BytePagesAllowFourPagesTXandRXPlusScratch-PadMemoryNextIDReadableInternalClockScalerforAdjustingNetworkSpeedOperatingTemperatureRangeof-40oCto+85oCSelf-ReconfigurationProtocolSupportsupto255NodesSupportsVariousNetworkTopologies(Star,Tree,Bus.
.
.
)CMOS,Single+5VSupplyDuplicateNodeIDDetectionPowerfulDiagnosticsReceiveAllPacketsModeFlexibleMediaInterface:RS485DifferentialDriverInterfaceForLowCost,LowPower,HighReliabilityORDERINGINFORMATIONOrderNumbers:COM20019ILJPfor28pinPLCCpackage;COM20019I-DZDfor28pinPLCClead-freeRoHSCompliantpackageCOM20019I-HDfor48pinTQFPpackage;COM20019I-HTfor48pinTQFPlead-freeRoHSCompliantpackageRev.
09-25-07Page2SMSCCOM20019IPRODUCTPREVIEW80ARKAYDRIVE,HAUPPAUGE,NY11788(631)435-6000,FAX(631)273-3123Copyright2007SMSCoritssubsidiaries.
Allrightsreserved.
CircuitdiagramsandotherinformationrelatingtoSMSCproductsareincludedasameansofillustratingtypicalapplications.
Consequently,completeinformationsufficientforconstructionpurposesisnotnecessarilygiven.
Althoughtheinformationhasbeencheckedandisbelievedtobeaccurate,noresponsibilityisassumedforinaccuracies.
SMSCreservestherighttomakechangestospecificationsandproductdescriptionsatanytimewithoutnotice.
ContactyourlocalSMSCsalesofficetoobtainthelatestspecificationsbeforeplacingyourproductorder.
TheprovisionofthisinformationdoesnotconveytothepurchaserofthedescribedsemiconductordevicesanylicensesunderanypatentrightsorotherintellectualpropertyrightsofSMSCorothers.
AllsalesareexpresslyconditionalonyouragreementtothetermsandconditionsofthemostrecentlydatedversionofSMSC'sstandardTermsofSaleAgreementdatedbeforethedateofyourorder(the"TermsofSaleAgreement").
Theproductmaycontaindesigndefectsorerrorsknownasanomalieswhichmaycausetheproduct'sfunctionstodeviatefrompublishedspecifications.
Anomalysheetsareavailableuponrequest.
SMSCproductsarenotdesigned,intended,authorizedorwarrantedforuseinanylifesupportorotherapplicationwhereproductfailurecouldcauseorcontributetopersonalinjuryorseverepropertydamage.
AnyandallsuchuseswithoutpriorwrittenapprovalofanOfficerofSMSCandfurthertestingand/ormodificationwillbefullyattheriskofthecustomer.
CopiesofthisdocumentorotherSMSCliterature,aswellastheTermsofSaleAgreement,maybeobtainedbyvisitingSMSC'swebsiteathttp://www.
smsc.
com.
SMSCisaregisteredtrademarkofStandardMicrosystemsCorporation("SMSC").
Productnamesandcompanynamesarethetrademarksoftheirrespectiveholders.
SMSCDISCLAIMSANDEXCLUDESANYANDALLWARRANTIES,INCLUDINGWITHOUTLIMITATIONANYANDALLIMPLIEDWARRANTIESOFMERCHANTABILITY,FITNESSFORAPARTICULARPURPOSE,TITLE,ANDAGAINSTINFRINGEMENTANDTHELIKE,ANDANYANDALLWARRANTIESARISINGFROMANYCOURSEOFDEALINGORUSAGEOFTRADE.
INNOEVENTSHALLSMSCBELIABLEFORANYDIRECT,INCIDENTAL,INDIRECT,SPECIAL,PUNITIVE,ORCONSEQUENTIALDAMAGES;ORFORLOSTDATA,PROFITS,SAVINGSORREVENUESOFANYKIND;REGARDLESSOFTHEFORMOFACTION,WHETHERBASEDONCONTRACT;TORT;NEGLIGENCEOFSMSCOROTHERS;STRICTLIABILITY;BREACHOFWARRANTY;OROTHERWISE;WHETHERORNOTANYREMEDYOFBUYERISHELDTOHAVEFAILEDOFITSESSENTIALPURPOSE,ANDWHETHERORNOTSMSCHASBEENADVISEDOFTHEPOSSIBILITYOFSUCHDAMAGES.
SMSCCOM20019IPage3Rev.
09-25-07PRODUCTPREVIEWGeneralDescriptionSMSC'sCOM20019IisamemberofthefamilyofEmbeddedARCNETControllersfromStandardMicrosystemsCorporation.
Thedeviceisageneralpurposecommunicationscontrollerfornetworkingmicrocontrollersandintelligentperipheralsinindustrial,automotive,andembeddedcontrolenvironmentsusinganARCNETprotocolengine.
Theflexiblemicrocontrollerandmediainterfaces,eight-pagemessagesupport,andextendedtemperaturerangeoftheCOM20019Imakeittheonlytruenetworkcontrolleroptimizedforuseinindustrial,embedded,andautomotiveapplications.
UsinganARCNETprotocolengineistheidealsolutionforembeddedcontrolapplicationsbecauseitprovidesadeterministictoken-passingprotocol,ahighlyreliableandprovennetworkingscheme,andadatarateofupto312.
5KbpswhenusingtheCOM20019I.
Atoken-passingprotocolprovidespredictableresponsetimesbecauseeachnetworkeventoccurswithinapredeterminedtimeinterval,baseduponthenumberofnodesonthenetwork.
ThedeterministicnatureofARCNETisessentialinrealtimeapplications.
Theintegrationofthe2Kx8RAMbufferon-chip,theCommandChainingfeature,themaximumdatarate,andtheinternaldiagnosticsmaketheCOM20019Ithehighestperformanceembeddedcommunicationsdeviceavailable.
WithonlyoneCOM20019Iandonemicrocontroller,acompletecommunicationsnodemaybeimplemented.
Rev.
09-25-07Page4SMSCCOM20019IPRODUCTPREVIEWBlockDiagramFigure1-InternalBlockDiagramMICRO-SEQUENCERANDWORKINGREGISTERSSTATUS/COMMANDREGISTERRESETLOGICRECONFIGURATIONTIMERNODEIDLOGICOSCILLATORTX/RXLOGICADDITIONALREGISTERSADDRESSDECODINGCIRCUITRY2Kx8AD0-AD2,BUSARBITRATIONCIRCUITRYnPULSE1nPULSE2nTXENnINTRnRESETRAMA0/nMUXA1A2/BALEnRD/nDSnWR/DIRnCSD3-D7RXINXTAL1XTAL2SMSCCOM20019IPage5Rev.
09-25-07PRODUCTPREVIEWPackageOutlines28-PinPLCCPackageOutlineandParametersAA1BB1CDD1D2D3EFGR.
160-.
180.
090-.
120.
013-.
021.
026-.
032.
020-.
045.
485-.
495.
450-.
456.
390-.
430.
300REF.
050BSC.
042-.
056.
042-.
048.
025-.
045DIM28LJ.
000-.
020NOTES:Alldimensionsareininches.
Circleindicatingpin1canappearonatopsurfaceasshownonthedrawingorrightaboveitonabevelededge.
1.
2.
PINNO.
1GEJD3JD1DJB1BAA1CD2FRBasePlaneSeatingPlaneRev.
09-25-07Page6SMSCCOM20019IPRODUCTPREVIEW48-PinTQFPPackageOutlineandParametersMINNOMINALMAXREMARKA~~1.
6OverallPackageHeightA10.
050.
100.
15StandoffA21.
351.
401.
45BodyThicknessD8.
809.
009.
20XSpanD/24.
404.
504.
601/2XSpanMeasurefromCenterlineD16.
907.
007.
10XbodySizeE8.
809.
009.
10YSpanE/24.
404.
504.
601/2YSpanMeasurefromCenterlineE16.
907.
007.
10YbodySizeH0.
09~0.
20LeadFrameThicknessL0.
450.
600.
75LeadFootLengthfromCenterlineL1~1.
00~LeadLengthe0.
50BasicLeadPitchθ0o~7oLeadFootAngleW0.
17~0.
27LeadWidthR10.
08~~LeadShoulderRadiusR20.
08~0.
20LeadFootRadiusccc~~0.
0762Coplanarity(Assemblers)ccc~~0.
08Coplanarity(TestHouse)Note:ControllingUnit:millimeterMouserElectronicsAuthorizedDistributorClicktoViewPricing,Inventory,Delivery&LifecycleInformation:Microchip:COM20019I-DZD-TRCOM20019I-DZD
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CloudCone在月初发了个邮件，表示上新了一个系列VPS主机，采用SSD缓存磁盘，支持下单购买额外的CPU、内存和硬盘资源，最低年付17.99美元起。CloudCone成立于2017年，提供VPS和独立服务器租用，深耕洛杉矶MC机房，最初提供按小时计费随时退回，给自己弄回一大堆中国不能访问的IP，现在已经取消了随时删除了，不过他的VPS主机价格不贵，支持购买额外IP，还支持购买高防IP。下面列...
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