Global Standards for the Microelectronics Industry
Standards & Documents Search
Title | Document # | Date |
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DDR5 SDRAMRelease Number: Version 1.31 |
JESD79-5C.01 | Jul 2024 |
Version 1.31 This standard defines the DDR5 SDRAM specification, including features, functionalities, AC and DC characteristics, packages, and ball/signal assignments. The purpose of this Standard is to define the minimum set of requirements for JEDEC compliant 8 Gb through 32 Gb for x4, x8, and x16 DDR5 SDRAM devices. This standard was created based on the DDR4 standards (JESD79-4) and some aspects of the DDR, DDR2, DDR3, and LPDDR4 standards (JESD79, JESD79-2, JESD79-3, and JESD209-4). Available for purchase: $423.00 Add to Cart Paying JEDEC Members may login for free access. |
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DDR5 SERIAL PRESENCE DETECT (SPD) CONTENTSRelease Number: Release 1.3 |
JESD400-5C | Sep 2024 |
This standard describes the serial presence detect (SPD) values for all DDR5 memory modules. In this context, “modules” applies to memory modules like traditional Dual In-line Memory Modules (DIMMs) or solder-down motherboard applications. The SPD data provides critical information about all modules on the memory channel and is intended to be use by the system's BIOS in order to properly initialize and optimize the system memory channels. Committee(s): JC-45 Free download. Registration or login required. |
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LOW POWER DOUBLE DATA RATE (LPDDR) 5/5X |
JESD209-5C | Jul 2023 |
This document defines the LPDDR5/LPDDR5X standard, including features, functionalities, AC and DC characteristics, packages, and ball/signal assignments. The purpose of this specification is to define the minimum set of requirements for a JEDEC compliant x16 one channel SDRAM device and x8 one channel SDRAM device. LPDDR5/LPDDR5X device density ranges from 2 Gb through 32 Gb. This document was created using aspects of the following standards: DDR2 (JESD79-2), DDR3 (JESD79-3), DDR4 (JESD79-4), LPDDR (JESD209), LPDDR2 (JESD209-2), LPDDR3 (JESD209-3), and LPDDR4 (JESD209-4). Available for purchase: $459.00 Add to Cart Paying JEDEC Members may login for free access. |
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DDR5 DIMM Labels |
JESD401-5B.01 | May 2024 |
This standard defines the labels that shall be applied to all DDR5 memory modules to fully describe the key attributes of the module. The label can be in the form of a stick-on label, silk screened onto the assembly, or marked using an alternate customer-readable format. A readable point size should be used, and the number can be printed in one or more rows on the label. Hyphens may be dropped when lines are split, or when font changes sufficiently. Committee(s): JC-45 Free download. Registration or login required. |
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DDR5 Registering Clock Driver Definition (DDR5RCD03)Release Number: 1.00 |
JESD82-513 | Feb 2023 |
This standard defines standard specifications of DC interface parameters, switching parameters, and test loading for definition of the DDR5 Registering Clock Driver (RCD) with parity for driving address and control nets on DDR5 RDIMM and LRDIMM applications. The DDR5RCD03 Device ID is DID = 0x0053. Free download. Registration or login required. |
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DDR5 Registering Clock Driver Definition (DDR5RCD04) |
JESD82-514.01 | Jun 2024 |
This document defines standard specifications of DC interface parameters, switching parameters, and test loading for definition of the DDR5 Registering Clock Driver (RCD) with parity for driving address and control nets on DDR5 RDIMM applications. The DDR5RCD04 Device ID is DID = 0x0054. Free download. Registration or login required. |
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DDR5 Registering Clock Driver Definition (DDR5RCD02)Release Number: Rev. 1.00 |
JESD82-512 | Feb 2023 |
This standard defines specifications of DC interface parameters, switching parameters, and test loading for definition of the DDR5 Registering Clock Driver (RCD) with parity for driving address and control nets on DDR5 RDIMM and LRDIMM applications. The DDR5RCD02 Device ID is DID = 0x0052. Free download. Registration or login required. |
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DDR5 REGISTERING CLOCK DRIVER DEFINITION (DDR5RCD01) |
JESD82-511 | Aug 2021 |
This document defines standard specifications of DC interface parameters, switching parameters, and test loading for definition of the DDR5 Registering Clock Driver (RCD) with parity for driving address and control nets on DDR5 RDIMM and LRDIMM applications. The DDR5RCD01 Device ID is DID = 0x0051. Committee(s): JC-40.4 Free download. Registration or login required. |
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Compression Attached Memory Module (CAMM2) Common Standard |
JESD318 Ver. 1.02 | Nov 2023 |
This standard defines the electrical and mechanical requirements for Double Data Rate, Synchronous DRAM Compression-Attached Memory Modules (DDR5 SDRAM CAMM2s) and Low Power Double Data Rate, Synchronous DRAM Compression-Attached Memory Modules (LPDDR5/5X SDRAM CAMM2s). Committee(s): JC-45 Free download. Registration or login required. |
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LPDDR5/5X Serial Presence Detect (SPD) ContentsRelease Number: 1.0 |
JESD406-5 | Jun 2024 |
This publication describes the serial presence detect (SPD) values for all LPDDR5/5X memory modules. In this context, “modules” applies to memory modules like traditional Dual In-line Memory Modules (DIMMs) or solder-down motherboard applications. The SPD data provides critical information about all modules on the memory channel and is intended to be use by the system's BIOS in order to properly initialize and optimize the system memory channels. The storage capacity of the SPD non-volatile memory is limited, so a number of techniques are employed to optimize the use of these bytes, including overlays and run length limited coding. Committee(s): JC-45 Free download. Registration or login required. |
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DDR5 Buffer Definition (DDR5DB01) - Rev. 1.1 |
JESD82-521 | Dec 2021 |
This standard defines standard specifications for features and functionality, DC & AC interface parameters and test loading for definition of the DDR5 data buffer for driving DQ and DQS nets on DDR5 LRDIMM applications. The purpose is to provide a standard for the DDR5DB01 (see Note) logic device, for uniformity, multiplicity of sources, elimination of confusion, ease of device specification, and ease of use. Item 323.98K Committee(s): JC-40.4 Free download. Registration or login required. |
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GRAPHICS DOUBLE DATA RATE (GDDR5) SGRAM STANDARDRelease Number: C.01 - Terminology update |
JESD212C.01 | Jan 2023 |
Terminology update. Patents(): A complete list of Assurance/Disclosure Forms is available to JEDEC members in the Members Area. Non-members can obtain individual Assurance/Disclosure Forms on request from the JEDEC office. Committee(s): JC-42.3C Free download. Registration or login required. |
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JEDEC® Memory Controller Standard – for Compute Express Link® (CXL®) |
JESD319 | Sep 2024 |
This standard defines the overall specifications, interface parameters, signaling protocols, and features for a CXL® Memory Controller ASIC. The standard includes pinout information, functional description, and configuration interface. This standard, along with other Referenced Specifications, should be treated as a whole for the purposes of defining overall functionality for CXL® Memory Controller (referred to as CMC). Committee(s): JC-40 Free download. Registration or login required. |
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DDR5 262 Pin SODIMM Connector Performance Standard |
PS-006B | Sep 2024 |
This standard defines the form, fit and function of SODIMM DDR5 connectors for modules supporting channels with transfer rates 6.4 GT/S and beyond. It contains mechanical, electrical and reliability requirements for a one-piece connector mated to a module with nominal thickness of 1.20 mm. The intent of this document is to provide performance standards to enable connector, system designers and manufacturers to build, qualify and use the SODIMM DDR5 connectors in client and server platforms. Item 14-226 Free download. Registration or login required. |
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LPDDR5 CAMM2 Connector Performance Standard |
PS-007A | Jul 2024 |
LPDDR5 CAMM2 Connector Performance Standard Free download. Registration or login required. |
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DDR5 Clocked Unbuffered Dual Inline Memory Module (CUDIMM) Common SpecificationRelease Number: Version 1.0 |
JESD323 | Jan 2024 |
This standard defines the electrical and mechanical requirements for 288-pin, 1.1 V (VDD), Clocked, Unbuffered, Double Data Rate, Synchronous DRAM Dual In-Line Memory Modules (DDR5 SDRAM CUDIMMs). These DDR5 Clocked Unbuffered DIMMs (CUDIMMs) are intended for use as main memory when installed in Computers. Free download. Registration or login required. |
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DDR5 Clocked Small Outline Dual Inline Memory Module (CSODIMM) Common SpecificationRelease Number: Version 1.0 |
JESD324 | Jan 2024 |
This standard defines the electrical and mechanical requirements for 262-pin, 1.1 V (VDD), Clocked Small Outline, Double Data Rate, Synchronous DRAM Dual In-Line Memory Modules (DDR5 SDRAM CSODIMMs). These DDR5 CSODIMMs are intended for use as main memory when installed in Computers, laptops and other systems. Free download. Registration or login required. |
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STANDARD - DDR5 288 Pin U/R/LR DIMM Connector Performance Standard, DDR5 |
PS-005B | Oct 2022 |
This standard defines the form, fit and function of DDR5 connectors for U/R/LR modules supporting channels with transfer rates up to 6.4 GT/S. It contains mechanical, electrical and reliability requirements for connector mated to a module with nominal thickness of 1.27 mm. The intent of this document is to provide Performance Standards to enable connector, system designers and manufacturers to build, qualify and use the DDR5 connectors in client and server platforms. Item 11.14-213S Committee(s): JC-11.14 Free download. Registration or login required. |
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DDR5 Unbuffered Dual Inline Memory Module (UDIMM) Common StandardRelease Number: Version 1.1 |
JESD308A | Jan 2024 |
This standard defines the electrical and mechanical requirements for 288-pin, 1.1 V (VDD), Unbuffered, Double Data Rate, Synchronous DRAM Dual In-Line Memory Modules (DDR5 SDRAM UDIMMs). These DDR5 Unbuffered DIMMs (UDIMMs) are intended for use as main memory when installed in Computers. Free download. Registration or login required. |
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GRAPHICS DOUBLE DATA RATE (GDDR5X) SGRAM STANDARD |
JESD232A.01 | Mar 2023 |
Terminology update. This standard defines the Graphics Double Data This standard defines the GDDR5X SGRAM memory standard, including features, device operation, electrical characteristics, timings, signal pin assignments, and package Committee(s): JC-42.3, JC-42.3C Free download. Registration or login required. |
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DDR5 Small Outline Dual Inline Memory Module (SODIMM) Common Standard |
JESD309 | May 2022 |
This standard defines the electrical and mechanical requirements for 262-pin, 1.1 V (VDD), Small Outline, Double Data Rate, Synchronous DRAM Dual In-Line Memory Modules (DDR5 SDRAM SODIMMs). These DDR5 SODIMMs are intended for use as main memory when installed in Computers, laptops and other systems. Item 2262.06B Free download. Registration or login required. |
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DDR5 Clock Driver Definition (DDR5CKD01)Release Number: Version 1.1 |
JESD82-531A.01 | Feb 2024 |
This document defines standard specifications of DC interface parameters, switching parameters, and test loading for definition of the DDR5 Clock Driver (CKD) for re-driving the DCK for CUDIMM, CSODIMM and CAMM applications. The DDR5CKD01 Device ID is DID = 0x0531. (5 = DDR5, Free download. Registration or login required. |
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JEDEC® Memory Module Reference Base Standard – for Compute Express Link® (CXL®) |
JESD317A | Mar 2024 |
This standard defines the specifications of interface parameters, signaling protocols, environmental requirements, packaging, and other features as reference for specific target implementations of CXL-attached memory modules. Committee(s): JC-45 Free download. Registration or login required. |
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DDR5 SODIMM Raw Card Annex E |
JESD309-S4-RCE | Jun 2022 |
This annex JESD309-S4-RCE, DDR5 Small Outline Dual Inline Memory Module with 4-bit ECC (EC4SODIMM) Raw Card E Annex" defines the design detail of x8, 2 Package Ranks DDR5 ECC SODIMM. The common feature of DDR5 SODIMM such as the connector pinout can be found in the JESD309, DDR5 Small Outline Dual Inline Memory Module (SODIMM) Common Standard. Free download. Registration or login required. |
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DDR5 Load Reduced (LRDIMM) and Registered Dual Inline Memory Module (RDIMM) Common Specification |
JESD305 | Jan 2022 |
This standard defines the electrical and mechanical requirements for 288-pin, 1.1 Volt (VDD and VDDQ), DDR5 Registered (RDIMM) and Load Reduced (LRDIMM), Double Data Rate (DDR), Synchronous DRAM Dual In-Line Memory Modules (DIMM). These 288-pin Registered and Load Reduced DDR5 SDRAM DIMMs are intended for use in server, workstation, and database environments. Item 2273.07. Committee(s): JC-45.1 Free download. Registration or login required. |
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DDR5 SODIMM Raw Card Annex B. Version 1.0 |
JESD309-S0-RCB | Aug 2022 |
This annex JESD309-S0-RCB, DDR5 Small Outline Dual Inline Memory Module with 0-bit ECC (EC0 SODIMM) Raw Card B Annex" defines the design detail of x8, 2 Package Ranks DDR5 NECC SODIMM. The common feature of DDR5 SODIMM such as the connector pinout can be found in the JESD309, DDR5 Small Outline Dual Inline Memory Module (SODIMM) Common Standard. Committee(s): JC-45.3 Free download. Registration or login required. |
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DDR5 SODIMM Raw Card Annex A Version 1 |
JESD309-S0-RCA | Jun 2022 |
This annex JESD309-S0-RCA, DDR5 Small Outline Dual Inline Memory Module (SODIMM) Raw Card A Annex defines the design detail of x8, 1 Package Rank DDR5 SODIMM. The common feature of DDR5 SODIMM such as the connector pinout can be found in the JESD309, DDR5 Small Outline Dual Inline Memory Module (SODIMM) Common Standard. Free download. Registration or login required. |
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DDR5 UDIMM Raw Card Annex BRelease Number: Version 1.0 |
JESD308-U0-RCB | Jul 2022 |
This annex JESD308-U0-RCB, DDR5 Unbuffered Dual Inline Memory Module (UDIMM) Raw Card B Annex defines the design detail of x8, 2 Package Ranks DDR5 UDIMM. The common feature of DDR5 UDIMM such as the connector pinout can be found in the JESD308, DDR5 Unbuffered Dual Inline Memory Module (UDIMM) Common Standard. Item 2265.11A Committee(s): JC-45.3 Free download. Registration or login required. |
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DDR5 UDIMM Raw Card Annex ERelease Number: Version 1.0 |
JESD308-U4-RCE | Jul 2022 |
This annex JESD308-U4-RCE, DDR5 Unbuffered Dual Inline Memory Module (UDIMM) with 4-bit ECC (EC4 SODIMM) Raw Card E Annex" defines the design detail of x8, 2 Package Ranks DDR5 ECC UDIMM. The common feature of DDR5 UDIMM such as the connector pinout can be found in the JESD308, DDR5 Unbuffered Dual Inline Memory Module (UDIMM) Common Standard. Item 2265.12A Committee(s): JC-45.3 Free download. Registration or login required. |
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DDR5 SODIMM Raw Card Annex D Version 1.0 |
JESD309-S4-RCD | Jun 2022 |
This annex JESD309-S4-RCD, DDR5 Small Outline Dual Inline Memory Module with 4-bit ECC (EC4 SODIMM) Raw Card D Annex defines the design detail of x8, 1 Package Rank DDR5 SODIMM with 4-bit ECC. The common feature of DDR5 SODIMM such as the connector pinout can be found in the JESD309, DDR5 Small Outline Dual Inline Memory Module (SODIMM) Common Standard. Committee(s): JC-45.3 Free download. Registration or login required. |
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DDR5 SODIMM Raw Card Annex C Version 1 |
JESD309-S0-RCC | Jun 2022 |
This annex JESD309-S0-RCC, DDR5 Small Outline Dual Inline Memory Module (SODIMM) Raw Card Free download. Registration or login required. |
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DDR5 UDIMM Raw Card Annex ARelease Number: Version 1.0 |
JESD308-U0-RCA | Jul 2022 |
This annex JESD308-U0-RCA, DDR5 Unbuffered Dual Inline Memory Module (UDIMM) Raw Card A Annex defines the design detail of x8, 1 Package Rank DDR5 UDIMM. The common feature of DDR5 UDIMM such as the connector pinout can be found in the JESD308, DDR5 Unbuffered Dual Inline Memory Module (UDIMM) Common Standard. Item 2265.13A Committee(s): JC-45.3 Free download. Registration or login required. |
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DDR5 UDIMM Raw Card Annex ARelease Number: Version 1.0 |
JESD308-U0-RCA | Jul 2022 |
This annex JESD308-U0-RCA, DDR5 Unbuffered Dual Inline Memory Module (UDIMM) Raw Card A Annex defines the design detail of x8, 1 Package Rank DDR5 UDIMM. The common feature of DDR5 UDIMM such as the connector pinout can be found in the JESD308, DDR5 Unbuffered Dual Inline Memory Module (UDIMM) Common Standard. Item 2265.13A Committee(s): JC-45.3 Free download. Registration or login required. |
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DDR5 UDIMM Raw Card Annex DRelease Number: Version 1.0 |
JESD308-U4-RCD | Jul 2022 |
This annex JESD308-U4-RCD, DDR5 Unbuffered Dual Inline Memory Module with 4-bit ECC (EC4 UDIMM) Raw Card D Annex defines the design detail of x8, 1 Package Rank DDR5 UDIMM with 4-bit ECC. The common feature of DDR5 UDIMM such as the connector pinout can be found in the JESD308, DDR5 Unbuffered Dual Inline Memory Module (UDIMM) Common Standard. Item 2265.14A Free download. Registration or login required. |
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DDR5 RDIMM Standard Annex ERelease Number: Version 1.0 |
JESD305-R8-RCE | Apr 2022 |
This standard, JESD305-R8-RCE, DDR5 Registered Dual Inline Memory Module with 8-bit ECC (EC8 RDIMM) Raw Card E Annex, defines the design detail of x8, 2 Package Ranks DDR5 RDIMM with 8-bit ECC. The common feature of DDR5 RDIMM, such as the connector pinout, can be found in the JESD305, DDR5 Load Reduced (LRDIMM) and Registered Dual Inline Memory Module (RDIMM) Common Standard. Item 2273.13. Committee(s): JC-45.1 Free download. Registration or login required. |
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DDR5 RDIMM Standard, Annex CRelease Number: Version 1.0 |
JESD305-R8-RCC | Apr 2022 |
This standard, JESD305-R8-RCC, DDR5 Registered Dual Inline Memory Module with 8-bit ECC (EC8 RDIMM) Raw Card C Annex, defines the design detail of x4, 1 Package Rank DDR5 RDIMM with 8-bit ECC. The common feature of DDR5 RDIMM, such as the connector pinout, can be found in the JESD305, DDR5 Load Reduced (LRDIMM) and Registered Dual Inline Memory Module (RDIMM) Common Standard. Item 2273.12. Committee(s): JC-45.1 Free download. Registration or login required. |
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Registration - 262 Pin DDR5 SODIMM, 0.50 mm Pitch Socket |
SO-024A | Apr 2019 |
Item 14-193 Committee(s): JC-11.14 Free download. Registration or login required. |
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DDR5 RDIMM Standard, Annex FRelease Number: Version 1.0 |
JESD305-R4-RCF | Apr 2022 |
This standard, JESD305-R4-RCF, DDR5 Registered Dual Inline Memory Module with 4-bit ECC (EC4 RDIMM) Raw Card F Annex, defines the design detail of x4, 1 Package Rank DDR5 RDIMM with 4-bit ECC. The common feature of DDR5 RDIMM, such as the connector pinout, can be found in the JESD305, DDR5 Load Reduced (LRDIMM) and Registered Dual Inline Memory Module (RDIMM) Common Standard. Item 2273.10. Committee(s): JC-45.1 Free download. Registration or login required. |
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DDR5 RDIMM Standard Annex BRelease Number: Version 1.0 |
JESD305-R4-RCB | Apr 2022 |
This standard, JESD305-R4-RCB, DDR5 Registered Dual Inline Memory Module with 4-bit ECC (EC4 RDIMM) Raw Card B Annex, defines the design detail of x4, 2 Package Ranks DDR5 RDIMM with 4-bit ECC. The common feature of DDR5 RDIMM, such as the connector pinout, can be found in the JESD305, DDR5 Load Reduced (LRDIMM) and Registered Dual Inline Memory Module (RDIMM) Common Standard. Item 2273.14. Committee(s): JC-45.1 Free download. Registration or login required. |
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DDR5 UDIMM Raw Card Annex CRelease Number: Version 1.0 |
JESD308-U0-RCC | Jul 2022 |
This annex JESD308-U0-RCC, “DDR5 Unbuffered Dual Inline Memory Module (UDIMM) Raw Card C Annex” defines the design detail of x16, 1 Package Ranks DDR5 UDIMM. The common feature of DDR5 UDIMM such as the connector pinout can be found in the JESD308, DDR5 Unbuffered Dual Inline Memory Module (UDIMM) Common Standard. Item 2265.08A Committee(s): JC-45.3 Free download. Registration or login required. |