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:
Nov. 08, 2005
Filed:
Dec. 23, 2002
Antonino Geraci, Monza, IT;
Alberto Campisi, Milan, IT;
Lorenzo Bedarida, Vimercate, IT;
Simone Bartoli, Cambiago, IT;
Antonino Geraci, Monza, IT;
Alberto Campisi, Milan, IT;
Lorenzo Bedarida, Vimercate, IT;
Simone Bartoli, Cambiago, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
An autotesting method of a cells matrix of a memory device includes the steps of reading the values contained in a plurality of the memory cells, comparing the read values with reference values, signaling mismatch of the read values with the reference values as an error situation, and storing the error situations. In the autotesting method, the reading, comparing, signaling, and storing steps are repeated for all the memory cells in a matrix column. The autotesting method further includes the steps of storing the positions of any columns having at least one error situation, and repeating all of the preceding steps for all the matrix columns.