Experimental Demonstration of the High-Performance Floating-Body/Gate DRAM Cell for Embedded Memories

A capacitorless DRAM cell, floating-body/gate cell (FBGC), is experimentally presented with planar partially depleted SOI CMOS technology. The specially designed gate/drain underlap and gate/source overlap of the first transistor enable long worst case retention time as well as the fast write speed. The operation power dissipation is dramatically reduced while maintaining high sense margin. In addition, FBGC demonstrates excellent endurance performance and nondestructive read operation.