Scientific Reports (Sep 2021)

One-transistor static random-access memory cell array comprising single-gated feedback field-effect transistors

  • Sangik Choi,
  • Jaemin Son,
  • Kyoungah Cho,
  • Sangsig Kim

DOI
https://doi.org/10.1038/s41598-021-97479-x
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 9

Abstract

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Abstract In this study, we fabricated a 2 × 2 one-transistor static random-access memory (1T-SRAM) cell array comprising single-gated feedback field-effect transistors and examined their operation and memory characteristics. The individual 1T-SRAM cell had a retention time of over 900 s, nondestructive reading characteristics of 10,000 s, and an endurance of 108 cycles. The standby power of the individual 1T-SRAM cell was estimated to be 0.7 pW for holding the “0” state and 6 nW for holding the “1” state. For a selected cell in the 2 × 2 1T-SRAM cell array, nondestructive reading of the memory was conducted without any disturbance in the half-selected cells. This immunity to disturbances validated the reliability of the 1T-SRAM cell array.