4F2 resistive non-volatile memory formed in a NAND architecture
Abstract:
A logical NAND memory architecture comprising two-terminal, non-volatile resistive memory is disclosed. By way of example, disclosed logical NAND architectures can comprise non-volatile memory cells having approximately 4F2 area. This facilitates very high memory densities, even for advanced technology nodes. Further, the disclosed architectures are CMOS compatible, and can be constructed among back-end-of-line (BEOL) metal layers of an integrated chip. In some embodiments, subsets of two-terminal memory cells in a NAND array can be constructed between different pairs of BEOL metal layers. In other embodiments, the two-terminal memory cells can be constructed between a single pair of BEOL metal layers.
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