A 3-nm Gate-All-Around SRAM Featuring an Adaptive Dual-Bitline and an Adaptive Cell-Power Assist Circuit.

Autor: Song, Taejoong, Kim, Hoonki, Rim, Woojin, Jung, Hakchul, Park, Changnam, Lee, Inhak, Baek, Sanghoon, Jung, Jonghoon
Předmět:
Zdroj: IEEE Journal of Solid-State Circuits; Jan2022, Vol. 57 Issue 1, p236-244, 9p
Abstrakt: A 256-Mb gate-all-around (GAA) 6T SRAM is implemented in Samsung 3GAE EUV technology. Adaptive dual-bitline (ADBL) and adaptive cell-power (ACP) SRAM assist schemes are proposed to reduce SRAM $V_{\mathrm {MIN}}$. ADBL reduces the effective bitline (BL) resistance up to 62% by connecting auxiliary bitline (AUXBL) of small resistance to BL in the write operation. ACP performs write assist by selecting a farther power switch from the accessed bitcell to improve write margin with the increased cell-power resistance. Silicon shows that both ADBL and ACP improve $V_{\mathrm {MIN}}$ by 230 mV. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index