Power and Area Efficient Sub-threshold 6T SRAM with Horizontal Local Bit-Lines and Bit-Interleaving
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SRAM in the typical microprocessor consumes a substantial amount of on-chip area and significantly contributes to static power dissipation. This study presents a new SRAM architecture with minimum area that utilizes a modified 6T SRAM cell for sub- and near-threshold operation in ultra-low power applications. This new architecture introduces horizontal bit-lines, mitigates half-select disturb, and supports bit-interleaving. The proposed design's stability was thoroughly tested in the presence of process, temperature, and voltage variations and compared to the standard 6T and traditional 8T cells. A 32kb SRAM block implementing the proposed architecture was designed, simulated, and compared to a traditional 8T SRAM cell block. The results show that the proposed design has lower power consumption than the 8T SRAM block, comparable read performance, and better write performance. This was all achieved while only having a 10\% increase in area per bit over the conventional 6T thin-cell layout.
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Copyright © 2015 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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- 2015
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basuta-powerandareaefficientsubthreshold6tsramwith.pdf | 2023-05-04 | Public | Download |