Journal
MICROELECTRONICS RELIABILITY
Volume 52, Issue 4, Pages 613-627Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.microrel.2011.09.028
Keywords
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Funding
- Research and Development for Next-Generation Information Technology of MEXT
- Japan Society for the Promotion of Science (JSPS)
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Non-volatile RAM (NV-RAM) enables instant-on/off computing, which drastically reduces power consumption. One of the most promising candidates for NV-RAM technology is the spin-transfer torque RAM (SPRAM) based on magnetic tunnel junction (MTJ) device technology. This paper reviews the development of MTJ device technology and formulates considerations regarding its memory application, including SPRAM memory cell structure and operation, write voltage limitation, and thermal stability. At the circuit level, a disruptive read operation for future large integration scale is described. A 4F(2) memory cell and a multi-bit cell approach are also presented. Finally, the potential value of instant-on/off computing through NV-RAM and its impact are explored. (C) 2011 Elsevier Ltd. All rights reserved.
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