Patent ID: 11947713
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A device configured to provide a physically unclonable function (PUF) value, comprising:
a plurality of PUF cells, each configured to provide a PUF contribution to the PUF value, each of the PUF cells being responsive to a first control line and a second control line; and
a control signal generator configured to respectively provide first and second word line signals to the first control line and the second control line in both a synchronized manner and a manner that the second word line signal is in series with the first word line signal to identify cell strengths based on a number of times PUF cell values change based on variations in timing of the first and second word line signals on the first control line and the second control line, whereby a data value indicating a number of times the PUF cell values are consistent when provided with the first and second word line signals on the first control line and the second control line with varied timing; and the data value indicating a number of times the PUF cell values are consistent is stored in a computer-readable medium.