Patent ID: 11949799
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 17:
18. A physical unclonable function (PUF) generator comprising:
a PUF cell array comprising a plurality of bit cells configured in a plurality of columns and at least one row, wherein the plurality of bit cells each comprises two first cross-coupled inverters and two access transistors, wherein the two access transistors are coupled to a first bit line and a second bit line of a respective column, and
a plurality of input/output (110) circuits each coupled to two columns of the PUF cell array,
wherein the at least one I/O circuit each comprises two second cross-coupled inverters, and wherein each of the two second cross-coupled inverters comprises an n-type metal-oxide-semiconductor (NMOS) transistor and a p-type MOS (PMOS) transistor, and wherein the two second cross-coupled inverters are coupled between two first bit lines from at least two columns of the PUF cell array.