tag: LPDDR

Choosing The Correct High-Bandwidth Memory
By Ann Mutschler - 25 Jan, 2023 - Comments: 0

The number of options for how to build high-performance chips is growing, but the choices for attached memory have barely budged. To achieve maximum performance in automotive, consumer, and hyperscale computing, the choices come down to one or more flavors of DRAM, and the biggest tradeoff is cost versus speed. DRAM remains an essential component in any of these architectures, despite years ... » read more

How Memory Design Optimizes System Performance
By John Koon - 21 Sep, 2022 - Comments: 0

Exponential increases in data and demand for improved performance to process that data has spawned a variety of new approaches to processor design and packaging, but it also is driving big changes on the memory side. While the underlying technology still looks very familiar, the real shift is in the way those memories are connected to processing elements and various components within a syste... » read more

More Errors, More Correction in Memories
By Bryon Moyer - 09 Nov, 2021 - Comments: 1

As memory bit cells of any type become smaller, bit error rates increase due to lower margins and process variation. This can be dealt with using error correction to account for and correct bit errors, but as more sophisticated error-correction codes (ECC) are used, it requires more silicon area, which in turn drives up the cost. Given this trend, the looming question is whether the cost of ... » read more

What Designers Need to Know About Error Correction Code (ECC) In DDR Memories
By Vadhiraj Sankaranarayanan - 10 Dec, 2020 - Comments: 2

As with any electronic system, errors in the memory subsystem are possible due to design failures/defects or electrical noise in any one of the components. These errors are classified as either hard-errors (caused by design failures) or soft-errors (caused by system noise or memory array bit flips due to alpha particles, etc.). To handle these memory errors during runtime, the memory subsyst... » read more

Memory Access In AI Systems
By Ed Sperling - 27 Jul, 2020 - Comments: 0

Memory access is a key consideration in AI system design. Ron Lowman, strategic marketing manager for IP at Synopsys, talks about how memory affects overall power consumption, why partitioning of on-chip and off-chip is so critical to performance and power, and how this changes from the cloud to the edge. » read more

What Is DRAM’s Future?
By Bryon Moyer - 09 Apr, 2020 - Comments: 0

Memory — and DRAM in particular — has moved into the spotlight as it finds itself in the critical path to greater system performance. This isn't the first time DRAM has been the center of attention involving performance. The problem is that not everything progresses at the same rate, creating serial bottlenecks in everything from processor performance to transistor design, and even the t... » read more

New Architectural Issues Facing Auto Ecosystem
By Ann Mutschler - 05 Mar, 2020 - Comments: 0

As chips bound for the automotive world move to small process nodes, including 5nm and below, the automotive ecosystem is wrestling with both scaling issues and challenges related to architecting safety-critical systems using fewer chips. This may sound counterintuitive, because one of the main reasons automotive chip providers are moving to smaller nodes is to reduce the number of chips in ... » read more

LPDDR4/4X DRAM Variants and Possible System Configurations
By Synopsys - 26 Feb, 2020 - Comments: 0

LPDDR is the de-facto standard for main-memory targeting mobile applications such as smartphones and tablets. Low-Power Double Data Rate Synchronous Dynamic Random Access Memories (LPDDR SDRAMs) or DRAMS offer high-performance while consuming significantly lower power than standard DDR memories, such as DDR5/4/3, which are ideal for systems requiring large memory capacity. For this reason, LPDD... » read more

Tradeoffs In Embedded Vision SoCs
By Ed Sperling - 28 Jan, 2020 - Comments: 0

Gordon Cooper, product marketing manager for embedded vision processors at Synopsys, talks with Semiconductor Engineering about the need for more performance in these devices, how that impacts power, and what can be done to optimize both prior to manufacturing. » read more

GDDR6 Drilldown: Applications, Tradeoffs And Specs
By Ed Sperling - 15 Nov, 2019 - Comments: 0

Frank Ferro, senior director of product marketing for IP cores at Rambus, drills down on tradeoffs in choosing different DRAM versions, where GDDR6 fits into designs versus other types of DRAM, and how different memories are used in different vertical markets. » read more

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