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Economic Aspects of Memory Built-in Self-Repair
March-April 2007 (vol. 24 no. 2)
pp. 164-172
Rei-Fu Huang, Media Tek
Chao-Hsun Chen, National Tsing Hua University
Cheng-Wen Wu, National Tsing Hua University
The demand for built-in self-repair (BISR) methodologies that improve the yield of embedded memories is growing. A typical BISR scheme requires circuit modules that perform built-in self-test (BIST), built-in redundancy analysis (BIRA), real-time address remapping, and so on. The objective of BISR design is to maximize the final yield while keeping a reasonably low hardware overhead. In this work, the authors propose cost and benefit models, and evaluate the economic effectiveness of typical memory BISR implementations. They also present a simulator for that purpose based on the proposed cost models. The results are useful for evaluating the BISR schemes and implementations. Experimental results show that memory size impacts the cost-effectiveness of BISR more than production volume does.
Index Terms:
built-in self-repair, BISR, economic models, BIST, BIRA, redundancy analysis, yield, overhead
Rei-Fu Huang, Chao-Hsun Chen, Cheng-Wen Wu, "Economic Aspects of Memory Built-in Self-Repair," IEEE Design & Test of Computers, vol. 24, no. 2, pp. 164-172, March-April 2007, doi:10.1109/MDT.2007.41
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