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:
Mar. 31, 2015
Filed:
Jun. 27, 2013
Texas Instruments Incorporated, Dallas, TX (US);
Michael Patrick Clinton, Austin, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A two-bit read-only-memory (ROM) cell and method of sensing its data state. Each ROM cell in an array includes a single n-channel metal-oxide-semiconductor (MOS) transistor with a source biased to a reference voltage, and its drain connected by a contact or via to one or none of first, second, and third bit lines associated with its column in the array. Each row in the array is associated with a word line serving as the transistor gates for the cells in that row. In response to a column address, a column select circuit selects one pair of the three bit lines to be applied to a sense line in wired-NOR fashion for sensing.