Multiple data storage of URAM (Unified-RAM) with multi dual cell (MDC) method

A multi-functional URAM (Unified-RAM) showing both 1T DRAM and flash memory characteristics at one cell is demonstrated. For flash memory characteristics, we fabricated a conventional floating body SOI NMOSFET with O/N/O stacks as a front gate. By combining two different operation modes of URAM, multiple data storage is demonstrated with a multi-dual cell (MDC).