Author's Latest Posts


Packetized Scan Test


Bus-based packetized scan data decouples test delivery and core-level DFT requirements so core-level compression configuration can be defined completely independently of chip I/O limitations. Grouping cores for concurrent testing is selected programmatically, not hard-wired. This concept dramatically reduces the DFT planning and implementation effort. The Siemens solution for packetized deli... » read more

Peeling The Onion Of An Automotive IC Digital Twin


This paper defines the modern digital twin in the context of the automotive industry and as it applies to the ICs being deployed therein. Additionally, it surveys the implications arising from the need to use digital twins to connect the virtual and physical worlds for semiconductor suppliers delivering the next generation of automotive capabilities. Why should I care about digital twins? T... » read more

An Organic Package Designer’s Guide To Transitioning To FOWLP And 2.5D Design


The IC packaging design tool set has matured to the point where it can address not only classic plastic, organic and ceramic packaging substrates but can also address silicon substrates driven by interposer and chiplet designs. In most cases system and packaging teams do not have to abandon their existing tool set to support these designs. In fact, the packaging design tool set can offer additi... » read more

Complete Reliability Verification For Multiple-Power-Domain Designs


With increasing design complexity and a heightened focus on reliability at all levels of integrated circuit (IC) design from intellectual property (IP) to full-chip, accurate and full verification coverage of the different reliability concerns within an IC design is essential. Designs containing multiple power domains add more complexity to reliability verification with the need to validate int... » read more

How Do You Qualify Tools For DO-254 Programs?


This paper describes the terminology and requirements related to tool qualification specific to the safety-critical programs governed by DO-254 compliance. It also provides some practical examples of tool qualification processes and strategies for commonly used tools. Qualifying tools for DO-254 While the use of state-of-the art development tools has led to ever increasing design complexity... » read more

Addressing SRAM Verification Challenges


SureCore Limited is an SRAM IP company based in Sheffield, the United Kingdom, that develops low power memories for current and next generation silicon process technologies. Its award-winning, world-leading, low power SRAM designs are process independent and variability tolerant, making them suitable for a wide range of technology nodes. Two major product families have been announced: PowerM... » read more

Similar But Different — The Tale Of Transient And Permanent Faults


When determining whether an IC is safe from random hardware faults, applying safety metrics such as PMHF, SPFM, and LFM, engineers must analyze both transient and permanent faults. This paper highlights the fundamental differences between permanent and transient faults on digital circuits, and why this distinction is important in the context of the ISO 26262:2018 functional safety standard. ... » read more

Interactive Symmetry Checking Provides Faster, Easier Symmetry Verification For Analog And Custom IC Designs


Device symmetry ensures accurate, efficient performance of analog and custom IC designs. However, traditional physical verification for symmetry is complex and time-consuming. Calibre interactive symmetry checking runs inside the design environment to simplify and enhance IC symmetry verification. Design teams can use Calibre interactive symmetry checking to quickly and accurately analyze layou... » read more

Interactive Point-To-Point Resistance Simulations


Point to point (P2P) resistance simulations calculate the effective resistance of the layout traces between points on an IC net trace, and let the designer know that there may be too much parasitic resistance from a particular net trace that would affect the reliability or performance of the circuit. However, traditional P2P simulation runs are time-consuming, and often require multiple iterati... » read more

Affordable And Comprehensive Testing Of 3D Stacked Die Devices


Developers of high-end semiconductor products who face manufacturing limitations with respect to die sizes are investing in 3D stacked die technology. These advanced designs already push current design-for-test (DFT) solutions to the limits: tool run time, on-chip area demand, test pattern count, and test time. How then, can designers manage DFT for these new 3D devices? In this paper, we outli... » read more

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