Design Flow Challenged By 3D-IC Process, Thermal Variation

By Karen Heyman - 27 Jun, 2024 - Comments: 0

3D-ICs are proving a challenge even for designers accustomed to dealing with power and performance tradeoffs, but they are considered an inevitable migration path for leading-edge designs due to the compute demands of AI and the continual shrinking of digital logic. 3D-ICs are widely viewed as the way to continue scaling beyond the limits of planar SoCs, and a way to add more heterogeneous d... » read more

Electromigration And IR Drop At Advanced Nodes

By Ed Sperling - 22 May, 2024 - Comments: 0

Manufacturing chips at 3nm and below is a challenge, but it's only part of the problem. Designing chips that can be manufactured and will actually work is potentially an even bigger problem. There is more data to sift through for place-and-route, less margin to pad a design, and there are more physical effects to contend with as transistors get taller, density increases, and chips age. Jeff Wil... » read more

Electromigration Concerns Grow In Advanced Packages

By Laura Peters - 18 Apr, 2024 - Comments: 0

The incessant demand for more speed in chips requires forcing more energy through ever-smaller devices, increasing current density and threatening long-term chip reliability. While this problem is well understood, it's becoming more difficult to contain in leading-edge designs. Of particular concern is electromigration, which is becoming more troublesome in advanced packages with multiple ch... » read more

Using AI/ML To Minimize IR Drop

By Ann Mutschler - 11 Apr, 2024 - Comments: 1

IR drop is becoming a much bigger problem as technology nodes scale and more components are packed into advanced packages. This is partly a result of physics, but it's also the result of how the design flow is structured. In most cases, AI/ML can help. The underlying problem is that moving to advanced process nodes, and now 3D-ICs, is driving current densities higher, while the power envelop... » read more

Backside Power Delivery Adds New Thermal Concerns

By Karen Heyman - 14 Mar, 2024 - Comments: 0

As the semiconductor industry gears up for backside power delivery at the 2nm node, implementation of the technology requires a re-thinking of established design practices. While some EDA tools are already qualified, designers must acquaint themselves with new issues, including making place-and-route more thermal-aware and how to manage heat dissipation with less shielding and thinner substr... » read more

Electromigration Performance Of Fine-Line Cu Redistribution Layer (RDL) For HDFO Packaging

By JiHye Kwon - 18 Jan, 2024 - Comments: 1

The downsizing trend of devices gives rise to continuous demands of increasing input/output (I/O) and circuit density, and these needs encourage the development of a High-Density Fan-Out (HDFO) package with fine copper (Cu) redistribution layer (RDL). For mobile and networking application with high performance, HDFO is an emerging solution because aggressive design rules can be applied to HDFO ... » read more

3D-ICs May Be The Least-Cost Option

By Brian Bailey - 30 Nov, 2023 - Comments: 1

When 2.5D and 3D packaging were first conceived, the general consensus was that only the largest semiconductor houses would be able to afford them, but development costs are quickly coming under control. In some cases, these advanced packages actually may turn out to be the lowest-cost options. With stacked die [1], each die is considered to be a complete functional block or sub-system. In t... » read more

Help, 3D-IC Is Stuck In A Country Song

By John Ferguson - 30 Nov, 2023 - Comments: 0

Every time I focus on three-dimensional (3D) integrated circuit (IC) design, I start hearing the Luke Bryan song “Rain Makes Corn, Corn Makes Whiskey.” Not because I need a strong drink to work with 3D-IC designs, but because there is a similar, although slightly more complicated, series of cause and effect issues that impact 3D-ICs. Pushing electrons through very thin metal wires and switc... » read more

Reliability On The Rise In IC Design

By Andre Lange - 14 Sep, 2023 - Comments: 0

Reliability has been an important factor in the semiconductor industry for decades. A closer look reveals three main priorities: In the area of technology development and optimization, the microscopic mechanisms that lead to degradation must be identified and understood before they can be fixed. Microanalytical methods are used here as well as TCAD simulations. If it’s not possible to... » read more

Mitigating Electromigration In Chip Design

By Akanksha Soni - 20 Jul, 2023 - Comments: 0

From smartphones to laptops, we use a variety of devices every day that rely on integrated circuits (ICs), or chips, to function. These chips are made up of thousands of transistors and interconnects, which transmit electrical signals from one part of the chip to another. But as demand for speed and complexity forces more energy through ever-smaller devices, this concentrated current flow can t... » read more

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Shift Left Is The Tip Of The Iceberg

A transformative change is underway for semiconductor design and EDA. New languages, models, and abstractions will need to be created.

by Brian Bailey

Partitioning In The Chiplet Era

Understanding how chiplets interact under different workloads is critical to ensuring signal integrity and optimal performance in heterogeneous designs.

by Ann Mutschler

NAND Flash Targets 1,000 Layers

New techniques go beyond improved deposition and etching, but challenges stack up, too.

by Bryon Moyer

3.5D: The Great Compromise

Pros and cons of a middle-ground chiplet assembly that combines 2.5D and 3D-IC.

by Ed Sperling

AI’s Role In Chip Design Widens, Drawing In New Startups

Focus is on letting engineers do much more with the same or fewer resources — and less drudgery.

by Karen Heyman

What Comes After HBM For Chiplets

The standard for high-bandwidth memory limits design freedom at many levels, but that is required for interoperability. What freedoms can be taken from other functions to make chiplets possible?

by Brian Bailey

Memory Fundamentals For Engineers

eBook: Nearly everything you need to know about memory, including detailed explanations of the different types of memory; how and where these are used today; what's changing, which memories are successful and which ones might be in the future; and the limitations of each memory type.

by The SE Staff

New AI Processors Architectures Balance Speed With Efficiency

Hot Chips 24: Large language models ratchet up pressure for sustainable computing and heterogeneous integration; data management becomes key differentiator.