Write current self-configuration scheme for MRAM yield improvement

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Title:	Write current self-configuration scheme for MRAM yield improvement
Authors:	鄭政誠;Chen, Ching-Yi;Wang, Sheng-Hung;Wu, Cheng-Wen
Contributors:	文學院歷史研究所
Keywords:	Applied sciences;Built-in self-test (BIST);characterization;Computer architecture;Electronics;Exact sciences and technology;Integrated circuits;Integrated circuits by function (including memories and processors);Magnetic and optical mass memories;magnetic random access memory (MRAM);Magnetic tunneling;Magnetoelectric, magnetostrictive, magnetoacoustic, magnetooptic and magnetothermal devices. Spintronics;memory testing;Microprocessors;Power demand;Random access memory;Search methods;Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices;Spirals;Storage and reproduction of information;Testing, measurement, noise and reliability;yield enhancement
Date:	2013-01-01
Issue Date:	2026-04-23 14:54:20 (UTC+8)
Publisher:	Institute of Electrical and Electronics Engineers Inc.;New York, NY: IEEE
Abstract:	摘要： Magnetic random access memory (MRAM) is an emerging nonvolatile memory, which is widely studied for its high speed, high density, small cell size, and almost unlimited endurance. However, for deep-submicrometer process technologies, significant variation in the MRAM cells' operating condition results in write failures in cells and reduces the production yield. Memory designers have to characterize failed MRAM chips to find a suitable current level for reconfiguring their write current, which is time consuming. In this paper, we propose an efficient operating-current search method and the corresponding built-in circuit for toggle MRAM, which can rapidly find the minimal operating current. With the built-in search circuit, an MRAM chip can dynamically configure its write current through few tester channels. The resulting chip works correctly and consumes lower power. Production yield, thus, can be increased while the test cost is greatly reduced. We also present a generator of the circuit, which determines the circuit parameters according to the memory specifications and user requirements, and automatically generates the corresponding modules. 其他題名： TVLSI 出版者： New York, NY: IEEE 出版日期： 2013-07-01 出處： IEEE transactions on very large scale integration (VLSI) systems, 2013-07, Vol.21 (7), p.1260-1270 資源來源： IEEE Xplore (NTUSG) 版權： 2014 INIST-CNRS 識別號： ISSN: 1063-8210 識別號： EISSN: 1557-9999 識別號： DOI: 10.1109/TVLSI.2012.2207136 識別號： CODEN: IEVSE9
Appears in Collections:	[Graduate Institute of History ] journal & Dissertation

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