Patent ID: 7961510

Claim:
A solid state drive that emulates a hard disk drive, comprising: a substrate including circuitry fabricated in a logic layer of the substrate; a memory in contact with and fabricated directly above the substrate, the memory including a plurality of vertically stacked memory layers that are in contact with one another, each memory layer is positioned in a memory plane that is distinct from memory planes of other memory layers, and each memory layer including at least one non-volatile two-terminal cross-point memory array that is electrically coupled with the circuitry, at least a portion of the circuitry is configured to perform data operations on the at least one non-volatile two-terminal cross-point memory array, each non-volatile two-terminal cross-point memory array including a plurality of two-terminal memory cells; and a memory access circuit included in the circuitry and configured to enable or disable data operations access to a first subset of the plurality of the two-terminal memory cells in response to a plurality of signals electrically coupled with the memory access circuit, the plurality of signals including access control data and a controllable access address, the access control data is stored in an access control memory included in a second subset of the plurality of the two-terminal memory cells, the memory access circuit including an emulation interface configured to emulate a hard disk drive.