The JEDEC Solid State Technology Association has published the JESD209-5B, Low Power Double Data Rate 5 (LPDDR5) standard which is both an update to the LPDDR5 standard that is focused on improving performance, power and flexibility, and a new LPDDR5X standard, which is an optional extension to LPDDR5.
Taken together, LPDDR5 and LPDDR5X are designed to significantly boost memory speed and efficiency for a variety of uses including mobile devices, such as 5G smartphones and artificial intelligence (AI) applications. The JESD209-5B has been developed by JEDEC’s JC-42.6 Subcommittee for Low Power Memories.
Key updates to this latest version of LPDDR5 include:
- Speed extension up to 8533 Mbps (versus up to 6400 Mbps in the previous revision)
- Signal Integrity improvements with TX/RX equalization
- Reliability improvements via the new Adaptive Refresh Management feature
The new LPDDR5X component of JESD209-5B is an optional extension intended to offer higher bandwidth and simplified architecture in support of enhanced 5G communication performance, and is designed for applications ranging from automotive to high resolution augmented reality/virtual reality and edge computing using AI.
“As one of the fastest memories in recent memory to move from concept to industry standard, LPDDR5x is not only a turbo-charged pacesetter for the smartphone marketplace,” according to Mian Quddus, JEDEC’s Chairman of the Board of Directors, “but a power-conserving solution that will set the bandwidth bar considerably higher in taking 5G into a wider consumer embrace worldwide.”
Industry Support
- Micron Technology
“As a leader in low-power memory, Micron collaborated closely with other JEDEC members to define LPDDR5X, providing the mobile ecosystem a critical advancement in higher bandwidth,” said Osamu Nagashima, Micron Senior Manager of mobile systems architecture and Vice Chair of the JEDEC low power memories subcommittee. “LPDDR5X’s higher speed interface will open doors to new 5G and AI use cases, delivering better user experiences across memory-intensive applications such as gaming, photography and streaming media.” - Samsung Electronics
“Samsung has joined with others on JEDEC’s JC-42.6 subcommittee in standardizing one of the most eagerly anticipated memory advancements in quite some time — a mobile memory interface that can provide substantial bandwidth expansion with minimal IP change and without compromising power efficiency,” said Doohee Hwang, Principal Engineer for mobile DRAM product planning, Samsung Electronics. “In lockstep with JEDEC’s LPDDR5/5X standardization process, Samsung also has been working closely with leading manufacturers to pave the road for the next generation of smartphones, laptops and other mobile computing devices.” - Synopsys
“Our customers are developing systems that require significantly higher performance memory interfaces at lower power to address the massive bandwidth demands of mobile, automotive and edge computing applications,” said John Koeter, Senior Vice President of marketing and strategy for IP at Synopsys. “As an active member of JEDEC, Synopsys is developing IP with the lowest latency and area for the latest JEDEC standards, including LPDDR5X where we already have early customer adoption.”
Click here to learn more about LPDDR5/5X from JEDEC.
