Nonvolatile SRAM architecture using MOSFET-based spin-transistors

Details Nonvolatile SRAM architecture using MOSFET-based spin-transistors Nonvolatile SRAM architecture using MOSFET-based spin-transistors

2009-01-20

arxiv.org/abs/0901.2980v1

Physics

Condensed Matter

Materials Science

12 pages, 4 figures

Scientific paper

The authors proposed and computationally analyzed nonvolatile static random access memory (NV-SRAM) architecture using metal-oxide-semiconductor field-effect transistor (MOSFET) type of spin-transistors referred to as pseudo-spin-MOSFET (PS-MOSFET). PS-MOSFET is a new circuit approach to reproduce the functions of spin-transistors, based on recently progressed magnetoresistive random access memory (MRAM) technology. The proposed NV-SRAM cell can be simply configured by connecting two PS-MOSFETs to the storage nodes of a standard SRAM cell. The logic information of the storage nodes can be electrically stored into the magnetic tunnel junctions (MTJs) of the PS-MOSFETs by current-induced magnetization switching (CIMS), and the stored information is automatically restored when the inverter loop circuit wakes up. In addition, the proposed NV-SRAM cell has no influence on the performance of normal SRAM operations. Low power dissipation and high degree of freedom of MTJ design are also remarkable features for NV-SRAM using PS-MOSFETs.

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