A radiation hardened SRAM cell design in PD-SOI CMOS technology

Abstract

A miller MOS capacitor in PD-SOI process is introduced between the internal latch nodes of six transistor cells to improve SEU (Single Event Upset) immunity of SRAM cells. SPICE analysis of SEU sensitivity of proposed 6-T SRAM cell, which bases on device-physics-basic SPICE model in 0.35µm PD-SOI CMOS technology, indicates that the upset threshold of the proposed cell can reach to 36fC and increases by 33.3% than 6T without miller capacitor.