Bipolar SRAM memory architecture in 4H-SiC for harsh environment applications

H Elgabra, A Siddiqui, S Singh - IEEE Transactions on Electron …, 2018 - ieeexplore.ieee.org
IEEE Transactions on Electron Devices, 2018ieeexplore.ieee.org
4H-silicon carbide (SiC) is a suitable candidate for high-temperature and radiation prone
applications, due to its superior electrical and material properties. Several researchers have
demonstrated small-scale logic circuits, entirely in 4H-SiC; however, to build a complete
electronic module in 4H-SiC, a memory component is yet to be developed. This paper
presents for the first time the design, optimization, and performance analysis of a 4H-SiC-
based bipolar memory column including a static random access memory cell and …
4H-silicon carbide (SiC) is a suitable candidate for high-temperature and radiation prone applications, due to its superior electrical and material properties. Several researchers have demonstrated small-scale logic circuits, entirely in 4H-SiC; however, to build a complete electronic module in 4H-SiC, a memory component is yet to be developed. This paper presents for the first time the design, optimization, and performance analysis of a 4H-SiC-based bipolar memory column including a static random access memory cell and peripherals, designed for voltages as low as 5 V. The memory column has average noise margins of 2 V and delays in the range of few nanoseconds at room temperature. The proposed memory architecture also demonstrates robust operation across a wide range of temperatures (27 °C-500 °C) with stable noise margins and speeds. This paper validates the potential of developing memory architectures in 4H-SiC, which operates reliably for varying conditions, paving the way to build complete electronic systems entirely based on 4H-SiC.
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