Global Standards for the Microelectronics Industry
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Title | Document # | Date |
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SPD Annex K - Serial Presence Detect (SPD) for DDR3 SDRAM Modules, Release 6 |
SPD4.1.2.11 | Feb 2014 |
Release No. 24. Item 2065.47A Committee(s): JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required. |
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SPD Annex L, Serial Presence Detect (SPD) for DDR4 SDRAM Modules, Release 4Release Number: 27A |
SPD4.1.2.L-4 | Aug 2019 |
This annex describes the serial presence detect (SPD) values for all DDR4 modules covered in Document Release 4. Differences between module types are encapsulated in subsections of this annex. These presence detect values are those referenced in the SPD standard document for ‘Specific Features’. Item 2220.01G. This is an editorial revision to the publication in January 2017. Committee(s): JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required. |
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SPD Annex L: Serial Presence Detect (SPD) for DDR4 SDRAM Modules, Release 5Release Number: 29 |
SPD4.1.2.L-5 | Aug 2019 |
This annex describes the serial presence detect (SPD) values for all DDR4 modules covered in Document Release 5. Differences between module types are encapsulated in subsections of this annex. These presence detect values are those referenced in the SPD standard document for ‘Specific Features’. Item 2276.05. Committee(s): JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required. |
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SPD Annex L: Serial Presence Detect (SPD) for DDR4 SDRAM Modules, Release 6Release Number: 30 |
SPD4.1.2.L-6 | Nov 2020 |
This annex describes the serial presence detect (SPD) values for all DDR4 modules covered in Document Release 6. Differences between module types are encapsulated in subsections of this annex. These presence detect values are those referenced in the SPD standard document for ‘Specific Features’. Item 2220.01H.
Committee(s): JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required. |
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DDR3 SDRAM STANDARD |
JESD79-3F | Jul 2012 |
This document defines the DDR3 SDRAM standard, 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 512 Mb through 8 Gb for x4, x8, and x16 DDR3 SDRAM devices. This document was created based on the DDR2 standard (JESD79-2) and some aspects of the DDR standard (JESD79). Each aspect of the changes for DDR3 SDRAM operation were considered and approved by committee ballots). The accumulation of these ballots were then incorporated to prepare this standard (JESD79-3), replacing whole sections and incorporating the changes into Functional Description and Operation. Item 1627.14 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-42.3 Available for purchase: $247.00 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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SPD Annex L: Serial Presence Detect (SPD) for DDR4 SDRAM Modules, Release 3Release Number: 25 |
SPD4.1.2.L-3 | Sep 2015 |
This annex describes the serial presence detect (SPD) values for all DDR4 modules. Differences between module types are encapsulated in subsections of this annex. These presence detect values are those referenced in the SPD standard document for ‘Specific Features’. The following SPD fields will be documented in the order presented in section 1.1 with the exception of bytes 128~255 which are documented in separate annexes, one for each family of module types. Further description of Byte 2 is found in Annex A of the SPD standard. Item 2220.01F. Committee(s): JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required. |
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Annex M: Serial Presence Detect (SPD) for LPDDR3 and LPDDR4 SDRAM Modules, Release 1Release Number: 25 |
SPD4.1.2.M-1 | Nov 2015 |
Committee Document Reference Title: LPDDR3 and LPDDR4 SPD Document Release 1 This Annex describes the serial presence detect (SPD) values for all LPDDR modules. Differences between module types are encapsulated in subsections of this annex. These presence detect values are those referenced in the SPD standard document for ‘Specific Features’. The following SPD fields will be documented in the order presented in Section 2, with the exception of bytes 128~255 which are documented in separate sections, one for each family of module types. Further description of Byte 2 is found in Annex A of the SPD standard. Item 2254.01 Committee(s): JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required. |
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Annex A: Differences between JESD21C Release 29 and its predecessor JESD21C, Release 28.Release Number: 29 |
AnnexA - JESD21C | Jan 2020 |
This table briefly describes the changes made to this standard, JESD21-C, Release 29, compared to its predecessor, JESD21C, Release 28. Committee(s): JC-42.2, JC-42.3 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required. |
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Annex M, Serial Presence Detect (SPD) for LPDDR3 and LPDDR4 SDRAM Modules, Document Release 2Release Number: 28 |
SPD4.1.2.M-2 | Aug 2018 |
This annex describes the serial presence detect (SPD) values for all LPDDR modules covered in Document Release 2. Differences between module types are encapsulated in subsections of this annex. These presence detect values are those referenced in the SPD standard document for ‘Specific Features’. Item 2254.02A Committee(s): JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required. |
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LPDDR5/5X Serial Presence Detect (SPD) ContentsRelease Number: 1.0 |
JESD406-5A | Nov 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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SPD General Standard. |
SPD4.1.2 | Jul 2008 |
Release No. 19. Item 2065.26 Committee(s): JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required. |
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SPD Annex L: Serial Presence Detect (SPD) for DDR4 SDRAM Modules, Release 1Release Number: 23 |
SPD4.1.2.L-1 | Nov 2013 |
This annex describes the serial presence detect (SPD) values for all DDR4 modules covered in Document Release 1. Differences between module types are encapsulated in subsections of this annex. These presence detect values are those referenced in the SPD standard document for ‘Specific Features’. Item 2220.01 Committee(s): JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required. |
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SPD Annex L: Serial Presence Detect (SPD) for DDR4 SDRAM Modules, Release 2Release Number: 23A |
SPD4.1.2.L-2 | Jan 2014 |
This annex describes the serial presence detect (SPD) values for all DDR4 modules covered in Document Release 2. Differences between module types are encapsulated in subsections of this annex. These presence detect values are those referenced in the SPD standard document for ‘Specific Features’. (This release is editorial changes only). Committee(s): JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required. |
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204-Pin DDR3 SDRAM Unbuffered SODIMM Design Specification |
MODULE4.20.18 | May 2014 |
Release No. 24; Item 2114.44 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required. |
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Addendum No. 3 to JESD79-3, 3D STACKED SDRAM |
JESD79-3-3 | Dec 2013 |
This addendum to JESD79-3 defines the 3DS DDR3 SDRAM specification, 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 compliant 8Gbit through 64Gbit x4 and x8 3DS DDR3 SDRAM devices. This document was created based on the E revision of the DDR standard (JESD79). Each aspect of the changes for 3DS DDR3 SDRAM operation was considered. Committee(s): JC-42.3 Free download. Registration or login required. |
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DDR3 DIMM Label |
PRN09-NM4 | Oct 2009 |
Preliminary publication of BoD-approved ballot material, prior to its inclusion in the next release of the appropriate JEDEC Standard. Item 2099.01b Committee(s): JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required. |
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LRDIMM DDR3 MEMORY BUFFER (MB) |
JESD82-30.01 | Jan 2023 |
Terminology update. The Load Reduced DIMM (LRDIMM) Memory Buffer (MB) supports DDR3 SDRAM main memory. The Memory Buffer allows buffering of memory traffic to support large memory capacities. Unlike DDR3 Register Buffer (SSTE32882), which only buffers Command, Address, Control and Clock, the LRDIMM Memory Buffer also buffers the Data (DQ) interface between the Memory Controller and the DRAM components. Free download. Registration or login required. |
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DEFINITION OF THE SSTE32882 REGISTERING CLOCK DRIVER WITH PARITY AND QUAD CHIP SELECTS FOR DDR3/DDR3L/DDR3U RDIMM 1.5 V/1.35 V/1.25 V APPLICATIONS |
JESD82-29A.01 | Jan 2023 |
Terminology update. The purpose is to provide a standard for the SSTE32882 (see Note) logic device, for uniformity, multiplicity of sources, elimination of confusion, ease of device specification, and ease of use. Committee(s): JC-40, JC-40.3, JC-40.4 Free download. Registration or login required. |
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144-Pin EP3-3200/EP3-4200/EP3-5300/EP3-6400 Unbuffered 32b-SO-DIMM Design Specification |
MODULE4.20.22 | Feb 2012 |
Release 22 Committee(s): JC-45.3 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required. |