标签: boards

IPC-6012F2023EN,QualificationandPerformanceSpecificationforRigidPrintedBoards

IPC-A-600K:2020-AcceptabilityofPrintedBoardsThedefinitiveillustratedguidetoprintedboardacceptability!Thisfour-colordocumentprovidesphotographsandillustrationsofthetarget,acceptableandnonconformingconditionsthatareeitherinternallyorexternallyobservableonbareprintedboards.Makesureyouroperators,inspectors,andengineershavethemostcurrentindustryconsensusinformation.With120neworrevisedphotographsandillustrations,revisionKprovidesnewcoverageontopicssuchasmicroviacontactdimensions,plating,voidingandfill,alongwithupdatedandexpandedcoveragefordielectricremoval(etchback,smearandwicking),platingfolds,surfaceplatingforedgeconnectors,SMTandBGApads,marking,holeregistration,delamination,capplating,viafillandflexiblecircuits.ThedocumentsynchronizestotheacceptabilityrequirementsexpressedinIPC-6012EandIPC-6013D.SupersedesIPC-A-600J.194992286@qq.com

摘要：此应用程序说明讨论技术建设monocolour和bicolour图形留言板使用MAX6952和MAX6953SPI™和I²C5x7矩阵LED显示驱动程序的硬件设计。Maxim/Dallas>AppNotes>DISPLAYDRIVERSKeywords:LEDdisplaydrivers,LEDdrivers,displaydrivers,SPI,I2C,serial,displays,message,messageboard,Mar28,2002noticeboards,noticeboards,wallboards,wallboards,topper,informationdisplaysAPPLICATIONNOTE1033BuildingDotMatrixGraphicPanelswiththeMAX6952andMAX69535x7LEDDriversThisapplicationnotediscusseshardwaredesigntechniquestobuildmonocolourandbicolourgraphicmessageboardsusingtheMAX6952andMAX6953SPIandI2C5x7matrixLEDdisplaydrivers.ThisapplicationnoteisoneoftwoapplicationnotesthatdiscussthesoftwareandprocessorinterfaceissuesintheapplicationoftheMAX6952andMAX6953LEDdriverstobuildanLEDmatrixgraphicpanelformessageboardsandanimatedgraphicdi……

摘要：此应用程序说明讨论技术建设monocolour和bicolour图形留言板使用的MAX6952和MAX6953SPI和I2C5x7矩阵LED显示驱动程序的软件设计。Maxim>AppNotes>DISPLAYDRIVERSKeywords:LEDdisplaydrivers,LEDdrivers,displaydrivers,SPI,I2C,serial,blink,3Vdisplays,message,Mar28,2002messageboard,Noticeboards,Noticeboards,Wallboards,Wallboards,Topper,InformationDisplaysAPPLICATIONNOTE1034SoftwareControloftheMAX6952andMAX6953LEDDriversinGraphicApplicationsAbstract:ThisapplicationnotediscussessoftwaredesigntechniquestobuildmonocolourandbicolourgraphicmessageboardsusingtheMAX6952andMAX6953SPIandI2C5x7matrixLEDdisplaydrivers.ThisapplicationnoteisoneoftwoapplicationnotesthatdiscussthesoftwareandprocessorinterfaceissuesintheapplicationoftheMAX6952andMAX6953LEDdriverstobuildasea-of-dotsLEDmatrixgraphicpanelformessageboards……

PCBStack-Up--Part5-Ten-LayerBoards[pic]PCBStack-UpPart5.Ten-LayerBoardsAten-layerboardshouldbeusedwhensixroutinglayersarerequired. Ten-layerboards,therefore,usuallyhavesixsignallayersandfourplanes. Havingmorethansixsignallayersonaten-layerboardisnotrecommended. Ten-layersisalsothelargestnumberoflayersthatcanusuallybeconvenientlyfabricatedina0.062"thickboard. Occasionallyyouwillseeatwelve-layerboardfabricatedasa0.062"thickboard,butthenumberoffabricatorscapableofproducingitarelimited..Highlayercountboards(ten+)requirethindielectrics(typically0.006"orlessona0.062"thickboard)andthereforetheyautomaticallyhavetightcouplingbetweenlayers. Whenproperlystackedandroutedtheycanmeet……

GroundplanesforlowcostboardsGroundplanesforlowcostboards1EMACservicesGroundplanesforlowcostboardsThegroundplaneapproachiswellestablishedforhigh-value,high-speeddigitalcircuitsforwhichmultilayerPCBsarethenorm.Whatissometimeslessappreciatedisthatitisdirectlyrelevanttolow-costanaloguecircuitsaswell.Addingagroundplanetoacheapsingle-sidedanalogueboardisoftenthesinglemostcosteffectivechangeforimprovingEMC.Despitetheencroachmentofdigitaltechnology,analoguecircuitsarestillwidelyusedforsimple,cost-sensitiveapplications,particularlyintheconsumermarket.Examplesaresecuritysensors,timersandresidualcurrentdetectors.Fortheseproducts,costisthedrivingfactorandbothcomponentcountandassemblytimemustbekepttoaminim……

STM32Nucleo-64boards