DRAM Scaling Challenges Grow


DRAM makers are pushing into the next phase of scaling, but they are facing several challenges as the memory technology approaches its physical limit. DRAM is used for main memory in systems, and today’s most advanced devices are based on roughly 18nm to 15nm processes. The physical limit for DRAM is somewhere around 10nm. There are efforts in R&D to extend the technology, and ultimate... » read more

New Trends In Wafer Bonding


Unable to scale horizontally, due to a combination of lithography delays and power constraints, manufacturers are stacking devices vertically. This has become essential as the proliferation of mobile devices drives demand for smaller circuit footprints, but the transition isn't always straightforward. Three-dimensional integration schemes take many forms, depending on the required interconne... » read more

Planning For Panel-Level Fan-out


Several companies are developing or ramping up panel-level fan-out packaging as a way to reduce the cost of advanced packaging. Wafer-level fan-out is one of several advanced packaging types where a package can incorporate dies, MEMS and passives in an IC package. This approach has been in production for years, and is produced in a round wafer format in 200mm or 300mm wafer sizes. Fan-out... » read more

Why Standard Memory Choices Are So Confusing


System architects increasingly are developing custom memory architectures based upon specific use cases, adding to the complexity of the design process even though the basic memory building blocks have been around for more than half a century. The number of tradeoffs has skyrocketed along with the volume of data. Memory bandwidth is now a gating factor for applications, and traditional memor... » read more

RISC-V Markets, Security And Growth Prospects


Semiconductor Engineering sat down to discuss open instruction set hardware with Ben Levine, senior director of product management in Rambus' Security Division; Jerry Ardizzone, vice president of worldwide sales at Codasip; Megan Wachs, vice president of engineering at SiFive; and Rishiyur Nikhil, CTO of Bluespec. What follows are excerpts of that conversation.  Part one of this discussion is ... » read more

The Challenge Of Defining Worst Case


Worst case conditions within a chip are impossible to define. But what happens if you missed a corner case that causes chip failure? As the semiconductor market becomes increasingly competitive — startups and systems companies are now competing with established chipmakers — no one can afford to consider theoretical worst cases. Instead, they must intelligently prune the space to make sur... » read more

Speeding Up 3D Design


2.5D and 3D designs have garnered a lot of attention recently, but when should these solutions be considered and what are the dangers associated with them? Each new packaging option trades off one set of constraints and problems for a different set, and in some cases the gains may not be worth it. For other applications, they have no choice. The tooling in place today makes it possible to de... » read more

Power Complexity On The Rise


New chip architectures and custom applications are adding significant challenges to chip design and verification, and the problems are becoming much more complex as low power is added into the mix. Power always has been a consideration in design, but in the past it typically involved different power domains that were either on, off, or in some level of sleep mode. As hardware architectures s... » read more

Addressing Pain Points In Chip Design


Semiconductor Engineering sat down to discuss the impact of multi-physics and new market applications on chip design with John Lee, general manager and vice president of ANSYS' Semiconductor Business Unit; Simon Burke, distinguished engineer at Xilinx, Duane Boning, professor of electrical engineering and computer science at MIT; and Thomas Harms, director EDA/IP Alliance at Infineon. What foll... » read more

Different Ways To Improve Chip Reliability


A push toward greater reliability in safety- and mission-critical applications is prompting some innovative approaches in semiconductor design, manufacturing, and post-production analysis of chip behavior. While quality over time has come under intensive scrutiny in automotive, where German carmakers require chips to last 18 years with zero defects, it isn't the only market demanding extende... » read more

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