JEDECSTANDARDHighBandwidthMemoryDRAM(HBM3)JESD238A(RevisionofJESD238,January2022)JANUARY2023JEDECSOLDSTATETECHNOLOGYASSOCIATIONNOTICEJEDECstandardsandpublicationscontainmaterialthathasbeenprepared,reviewed,andapprovedthroughtheJEDECBoardofDirectorslevelandsubsequentlyreviewedandapprovedbytheJEDEClegalcounsel.JEDECstandardsandpublicationsaredesignedtoservethepublicinterestthrougheliminatingmisunderstandingsbetweenmanufacturersandpurchasers,facilitatinginterchangeabilityandimprovementofproducts,andassistingthepurchaserinselectingandobtainingwithminimumdelaytheproperproductforusebythoseotherthanJEDECmembers,whetherthestandardistobeusedeitherdomesticallyorinternationally.JEDECstandardsandpublicationsareadoptedwithoutregardtowhetherornottheiradoptionmayinvolvepatentsorarticles,materials,orprocesses.BysuchactionJEDECdoesnotassumeanyliabilitytoanypatentowner,nordoesitassumeanyobligationwhatevertopartiesadoptingtheJEDECstandardsorpublications.TheinformationincludedinJEDECstandardsandpublicationsrepresentsasoundapproachtoproductspecificationandapplication,principallyfromthesolidstatedevicemanufacturerviewpoint.WithintheJEDECorganizationthereareprocedureswherebyaJEDECstandardorpublicationmaybefurtherprocessedandultimatelybecomeanANSIstandard.Noclaimstobeinconformancewiththisstandardmaybemadeunlessallrequirementsstatedinthestandardaremet.Inquiries,comments,andsuggestionsrelativetothecontentofthisJEDECstandardorpublicationshouldbeaddressedtoJEDECattheaddressbelow,orrefertowww.jedec.orgunderStandardsandDocumentsforalternativecontactinformation.Publishedby©JEDECSolidStateTechnologyAssociation20233103NorthIOthStreetSuite240SouthArlington,VA22201-2108JEDECretainsthecopyrightonthismaterial.Bydownloadingthisfiletheindividualagreesnottochargefororreselltheresultingmaterial.PRICE;ContactJEDECPrintedintheU.S.A.AllrightsreservedPLEASE!DON,TVIOLATETHELAW!ThisdocumentiscopyrightedbyJEDECandmaynotbereproducedwithoutpermission.Forinformation,contact;JEDECSolidStateTechnologyAssociation3103North10lhStreetSuite240SouthArlington,VA22201-2107orrefertowww.jedec.orgunderStandards-DocumentsZCopyrightInformation.ThispageintentionallyleftblankHIGHBANDWIDTHMEMORYDRAM(HBM3)ContentsPages1Scope......................................................................................................................................................12Features..................................................................................................................................................13Organization.............................................................................................................................................23.1ChannelDefinition...................................................................................................................................33.1.1SummaryofPer-ChanneISignals............................................................................................................33.1.2PseudoChannel........................................................................................................................................43.1.3DualCommandInterfaces........................................................................................................................53.2ChannelAddressing.............................................................
