1. Domain Wall Shift Register-Based Reconfigurable Logic.
- Author
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Zhao, Weisheng, Ravelosona, Dafine, Klein, Jacques-Olivier, and Chappert, Claude
- Subjects
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MAGNETIZATION , *SPINTRONICS , *MAGNETIC circuits , *COMPLEMENTARY metal oxide semiconductors , *INTEGRATED circuits , *MAGNETORESISTANCE , *SHIFT registers - Abstract
The current challenges of spintronic devices are the large power and long latency for magnetic switching. Current-induced domain wall (DW) motion is a new switching mechanism promising low-power, high-density, and high-speed circuits. It was first studied to build “race track” memory, which is considered as one of the most emerging technologies for future stand-alone memory. Based on the 3-D hybrid integration above CMOS circuits and using magnetic tunnel junction (MTJ) as the write/read heads, DW motion can be advantageously extended to logic and embedded memory applications. In this paper, we present the first DW shift register-based lookup-table circuit to build reconfigurable logic, which may nearly halve the die area compared with conventional SRAM-LUT by sharing a number of subcircuits and suggest some new functions such as multicontext configuration and run-time reconfiguration for further performance improvement. By using a DW electrical model and CMOS 65-nm design kit, its performances such as low power and high computing/reconfiguration speed have been simulated or calculated. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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