Dynamic Yield Analysis and Enhancement of FPGA Reconfigurable Memory System


This paper discusses the issues of FPGA reconfigurable memory system with faulty physical memory cells and yield measurement techniques are proposed. Static yield and dynamic yield of FPGA reconfigurable memory systems and their characteristics are analyzed. Yield enhancement of conventional memory systems relies on additional redundancy, but FPGA reconfigurable memory systems have inherited redundancy and customizability. Thus, they can accommodate numerous target memory configurations and redundant memory cells, if any, can be used as spares to enhance dynamic yield of the target memory configuration. Three fundamental strategies are introduced and analyzed: redundant bits, redundant words and combination of both. Mathematical analysis of those techniques also has been conducted to clarify their effects on yield. Selecting the most yield enhancing logical memory configuration which can accommodate the given target memory requirement among candidate configurations is referred to as optimal fitting. Optimal fitting algorithms for single configuration fitting, sequential reconfiguration system (SRS) fitting and concurrent reconfiguration system (CRS) fitting are proposed and analyzed based on the yield analysis techniques.

Meeting Name

18th IEEE Instrumentation and Technology Conference: IMTC: Rediscovering Measurement in the Age of Informatics (2001: May 21-23, Budapest, Hungary)


Electrical and Computer Engineering

Keywords and Phrases

Algorithms; Computer Aided Software Engineering; Digital Storage; Embedded Systems; Logic Design; Concurrent Reconfiguration System; Logical Memory; Reconfigurable Memory System; Sequential Reconfiguration System; Field Programmable Gate Arrays (FPGA); Concurrent Reconfiguration; Dynamic Yield; FPGA-Based Instrumentation; Memory Yield Enhancement; Memory Yield Measurement; Optimal Fitting; Reconfigurable Memory; Sequential Reconfiguration; Static Yield

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International Standard Serial Number (ISSN)


Document Type

Article - Conference proceedings

Document Version


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© 2001 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 May 2001