Bibliographic Details
| Title: |
A 16-kb 9T Ultralow-Voltage SRAM With Column-Based Split Cell-VSS, Data-Aware Write-Assist, and Enhanced Read Sensing Margin in 28-nm FDSOI. |
| Authors: |
Siddiqui, M. Sultan M.1 (AUTHOR) msultan@synopsys.com, Lee, Zhao Chuan1 (AUTHOR) e110002@e.ntu.edu.sg, Kim, Tony Tae-Hyoung1 (AUTHOR) thkim@ntu.edu.sg |
| Source: |
IEEE Transactions on Very Large Scale Integration (VLSI) Systems. Oct2021, Vol. 29 Issue 10, p1707-1719. 13p. |
| Subjects: |
Static random access memory, Static random access memory chips |
| Abstract: |
This work proposes an static random access memory (SRAM) with column-based split cell-VSS (CS-CVSS), data-aware write-assist (DAWA), and enhanced read sensing margin in 28-nm FDSOI technology. The proposed CS-CVSS and DAWA techniques improve both half-selected (HS) static noise margin (SNM) and write margin. They also improve HS dynamic noise margin (HS-DNM) by leveraging write through virtual ground with reduced load in the proposed write port. The proposed 3T read port enhances sensing margin by minimizing read bitline leakage through negative gate-to-source voltage regardless of cell data. A 16-kb 9T SRAM test chip demonstrated the minimum operating voltage for write and read operations as 0.47 and 0.25 V, respectively. The minimum energy of 6.72 pJ is achieved at 0.5 V. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
