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:
Aug. 19, 2008
Filed:
Jan. 04, 2007
Stefano Sivero, Milan, IT;
Marco Passerini, Lozza, IT;
Fabio Tassan Caser, Arcore, IT;
Simone Bartoli, Cambiago, IT;
Stefano Sivero, Milan, IT;
Marco Passerini, Lozza, IT;
Fabio Tassan Caser, Arcore, IT;
Simone Bartoli, Cambiago, IT;
Atmel Corporation, San Jose, CA (US);
Abstract
An erase-verify method for a NAND flash memory includes a serial double-step erase verify. A verify operation is performed on cells in the unit connected to even word lines by biasing all the even word lines at the read voltage value used in read mode, and by biasing all the odd word lines at the pass voltage value used in read mode of the selected unit. A verify operation is performed on the cells connected to odd word lines by biasing all the odd word lines at the read voltage value used in read mode and by biasing the all even word lines at the pass voltage value used in read mode of the selected unit. Verifying the odd and even word lines may be performed in either order.