Patent ID: 11967376
Assignee: CROSSBAR, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An electronic device, comprising:
an array of two-terminal resistive switching memory;
a memory controller operably coupled to the array of two-terminal resistive switching memory and configured to select a subset of two-terminal memory devices of the array for a physical unclonable feature (PUF) write operation; and
a sensing circuit configured to measure an electrical characteristic of a two-terminal memory device of the array in response to the PUF write operation; and wherein the PUF write operation is characterized by:
the memory controller selects a first two-terminal memory device of the array of two-terminal resistive switching memory and a second two-terminal memory device of the array of two-terminal resistive switching memory for the PUF write operation;
the memory controller applies a signal to the first two-terminal memory device and to the second two-terminal memory device;
the sensing circuit measures a response signal of the first two-terminal memory device compared to an electrical characteristic value associated with the PUF write operation;
the sensing circuit measures a second response signal of the second two-terminal memory device compared to the electrical characteristic value; and
the memory controller determines a value of a PUF number for the PUF write operation in response to both of: the comparison of the response signal to the electrical characteristic value and the comparison of the second response signal to the electrical characteristic value.