Global Standards for the Microelectronics Industry
Main Memory: DDR4 & DDR5 SDRAM
Semiconductor memory plays an essential role in the development and functions of countless electronic devices ranging from computers and servers to gaming consoles to televisions and telecommunications products. JEDEC standards encompass virtually every key standard for semiconductor memory in the market today.
JEDEC DDR5
JEDEC published its widely-anticipated JESD79-5 DDR5 SDRAM standard in July 2020, and the most recent update, JESD79-5C, in April 2024. This latest update includes the addition of features designed to improve reliability and security and to enhance performance in a wide range of applications from high-performance servers to emerging technologies such as AI and machine learning. JESD79-5C DDR5 is available for download from the JEDEC website.
JEDEC DDR4
JC-42 Committee
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Recent Documents
DDR5 SDRAM | JESD79-5C.01 | Jul 2024 |
LPDDR5/5X Serial Presence Detect (SPD) Contents | JESD406-5 | Jun 2024 |
Low Power Double Data Rate 4 (LPDDR4) | JESD209-4E | Jun 2024 |
DDR5 Registering Clock Driver Definition (DDR5RCD04) | JESD82-514.01 | Jun 2024 |
Graphics Double Data Rate 7 SGRAM Standard (GDDR7) | JESD239.01 | Apr 2024 |
DDR5 Clock Driver Definition (DDR5CKD01) | JESD82-531A.01 | Feb 2024 |
DDR5 Clocked Unbuffered Dual Inline Memory Module (CUDIMM) Common Specification | JESD323 | Jan 2024 |
DDR5 Unbuffered Dual Inline Memory Module (UDIMM) Common Standard | JESD308A | Jan 2024 |
DDR5 Clocked Small Outline Dual Inline Memory Module (CSODIMM) Common Specification | JESD324 | Jan 2024 |
JEDEC Module Sideband Bus (SidebandBus) | JESD403-1C | Dec 2023 |
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JC-16,40,42,45,63,64 | Montreal | 26 - 29 Aug 2024 |
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JC-16,40,42,45,63,64 | Vancouver | 25 - 28 Aug 2025 |