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:
Jul. 09, 2002
Filed:
Dec. 28, 2000
Applicant:
Inventor:
Duane Giles Laurent, Lewisville, TX (US);
Assignee:
STMicroelectronics, Inc., Carrollton, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 ;
U.S. Cl.
CPC ...
G11C 7/00 ;
Abstract
A dynamic random access memory (DRAM) includes a bit line pair, including a first bit line and a second bit line. Memory cells and a sense amplifier are coupled to the bit lines. A first characterization cell is coupled between the first bit line and a first reference supply line. The first characterization cell includes a capacitor. Similarly, a second characterization cell is coupled between the first bit line and the first reference supply line. The second characterization cell also includes a capacitor but preferably with a different capacitance. In the preferred embodiment, similar characterization cells are coupled to the second bit line.