The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 2019
Filed:
Oct. 07, 2016
Applicant:
Taiwan Semiconductor Manufacturing Co., Ltd., Hsin-Chu, TW;
Inventors:
Assignee:
Taiwan Semiconductor Manufacturing Co., Ltd., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/419 (2006.01); H04L 9/32 (2006.01); G06F 12/14 (2006.01); G06F 21/44 (2013.01); G06F 21/73 (2013.01);
U.S. Cl.
CPC ...
H04L 9/3278 (2013.01); G06F 12/1408 (2013.01); G06F 21/44 (2013.01); G06F 21/73 (2013.01); G06F 2212/1052 (2013.01); G06F 2212/402 (2013.01);
Abstract
A memory device includes a memory block that includes a plurality of memory bits, wherein each bit is configured to present a first logical state; and an authentication circuit, coupled to the plurality of memory bits, wherein the authentication circuit is configured to access a first bit under either a reduced read margin or a reduced write margin condition to determine a stability of the first bit by detecting whether the first logical state flips to a second logical state, and based on the determined stability of at least the first bit, to generate a physically unclonable function (PUF) signature.