US 11,967,351 B2
Physically unclonable function cell and operation method of same
Chia-Che Chung, Hsinchu (TW); Chia-Jung Tsen, Taoyuan (TW); Ya-Jui Tsou, Taichung (TW); and Chee-Wee Liu, Taipei (TW)
Assigned to TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., Hsinchu (TW); and NATIONAL TAIWAN UNIVERSITY, Taipei (TW)
Filed by TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., Hsinchu (TW); and NATIONAL TAIWAN UNIVERSITY, Taipei (TW)
Filed on Apr. 12, 2022, as Appl. No. 17/719,155.
Claims priority of provisional application 63/222,796, filed on Jul. 16, 2021.
Prior Publication US 2023/0013730 A1, Jan. 19, 2023
Int. Cl. G11C 11/16 (2006.01); H03K 19/1776 (2020.01)
CPC G11C 11/1673 (2013.01) [G11C 11/161 (2013.01); G11C 11/1657 (2013.01); H03K 19/1776 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device, comprising:
a physical unclonable function (PUF) cell array comprising a plurality of bit cells, and configured to generate a PUF response output, in response to a challenge input, based on a data state of one bit cell in the plurality of bit cells,
wherein each of the plurality of bit cells is configured to store a bit data and comprises:
a transistor having a control terminal coupled to a word line and a first terminal coupled to a source line;
a first memory cell having a first terminal coupled to a first data line and a second terminal coupled to a second terminal of the transistor; and
a second memory cell having a first terminal coupled to a second data line, different from the first data line, and a second terminal coupled to the second terminal of the first memory cell at the second terminal of the transistor.