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:
Jan. 30, 2001
Filed:
Nov. 18, 1999
Andrew L. Hawkins, Starkville, MS (US);
Stefan P. Sywyk, San Jose, CA (US);
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
A method of reading the contents of a dual port memory cell which has a Beta Ratio less than 1.5 is described. A wordline is associated with a selected port of the memory cell. The wordline is coupled to a gate device of the memory cell for controlling communication between the memory cell and a bitline. The gate device has a first conductance at a first wordline voltage and a second conductance at a second wordline voltage. The second conductance is less than the first conductance. A port of the cell is selected by applying a select voltage to the associated wordline. The select voltage is approximately the same as the second wordline voltage. The cell contents are then retrieved from the bitline.