Comparison between low and high read bias in FB-RAM on UTBOX FDSOI devices

This paper investigates the drain read bias impact on the FB-BRAM performance of Ultra Thin Buried Oxide (UTBOX) Fully Depleted Silicon On Insulator (FDSOI) devices. Both simulations and experimental results are used. Two read regimes are clearly observed. In the read regime at higher drain voltage, impact ionization is occurring and this result in a higher sense margin and a lower retention time compared to the low drain voltage read regime.