A single-ended low leakage and low voltage 10T SRAM cell with high yield

Abstract

This paper presents a low leakage power 10T single-ended SRAM cell in the sub-threshold region that improves read, write, and hold stability. While at low voltages, the write-ability is increased by temporarily floating the data node, the read stability of the cell is maintained approximately as equal as the hold state by separating the data-storage node from the read bit line by using only a single transistor. According to Simulations using HSPICE software in 10 nm FinFET technology, the read stability of the proposed cell is approximately 4.8× higher than the conventional 6T at 200 mV. Furthermore, the proposed cell is found to have the lowest static power dissipation, as it tends to be 4% lower than the standard six-transistor cell at this voltage. This study shows that the yield of the proposed cell is higher than 6σ in all operations, and supply voltages down to 200 mV.