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Low Cost Endurance Test-pattern Generation for Multi-level Cell Flash Memory
Jaewon Cha,Keewon Cho,Seunggeon Yu,Sungho Kang 대한전자공학회 2017 Journal of semiconductor technology and science Vol.17 No.1
A new endurance test-pattern generation on NAND-flash memory is proposed to improve test cost. We mainly focus on the correlation between the data-pattern and the device error-rate during endurance testing. The novelty is the development of testing method using quasi-random pattern based on device architectures in order to increase the test efficiency during time-consuming endurance testing. It has been proven by the experiments using the commercial 32 nm NAND flash-memory. Using the proposed method, the error-rate increases up to 18.6% compared to that of the conventional method which uses pseudo-random pattern. Endurance testing time using the proposed quasi-random pattern is faster than that of using the conventional pseudorandom pattern since it is possible to reach the target error rate quickly using the proposed one. Accordingly, the proposed method provides more lowcost testing solutions compared to the previous pseudo-random testing patterns.
Low Cost Endurance Test-pattern Generation for Multi-level Cell Flash Memory
Cha, Jaewon,Cho, Keewon,Yu, Seunggeon,Kang, Sungho The Institute of Electronics and Information Engin 2017 Journal of semiconductor technology and science Vol.17 No.1
A new endurance test-pattern generation on NAND-flash memory is proposed to improve test cost. We mainly focus on the correlation between the data-pattern and the device error-rate during endurance testing. The novelty is the development of testing method using quasi-random pattern based on device architectures in order to increase the test efficiency during time-consuming endurance testing. It has been proven by the experiments using the commercial 32 nm NAND flash-memory. Using the proposed method, the error-rate increases up to 18.6% compared to that of the conventional method which uses pseudo-random pattern. Endurance testing time using the proposed quasi-random pattern is faster than that of using the conventional pseudo-random pattern since it is possible to reach the target error rate quickly using the proposed one. Accordingly, the proposed method provides more low-cost testing solutions compared to the previous pseudo-random testing patterns.