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:
Apr. 14, 1998
Filed:
Aug. 30, 1996
Timothy Dominic Dorney, Houston, TX (US);
Anthony Michael Balistreri, Sugar Land, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An integrated circuit memory device (21) includes plural input/output pins (30, 127 and others) and plural arrays of addressable storage cells (31-46). A set of circuits (51, 68, 70, 71-86, 90) provides access to a unique storage location in each array (31-46) through a given row and column address. A writing circuit (47, 68, 70, 71-86, 91-106, 131-146), designed for test, provides in parallel plural copies of a test data bit. The test data bit is applied through a single pin (30) and a common data-in lead (68), for storage in an addressed storage cell in each of the arrays. A readout circuit (110, 111, 112, 171, 127, 201-216, 131-146) is arranged for reading out the stored test data bit from the addressed storage cell in each of the arrays (31-46). The writing circuit, while in a block write test mode, stores the test data bit on the common data-in lead (68) in a block of address locations in each array (31-46).