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:
Mar. 06, 2007
Filed:
Aug. 11, 2005
Hok Wong, Sunnyvale, CA (US);
Fabiano Fontana, San Jose, CA (US);
Hok Wong, Sunnyvale, CA (US);
Fabiano Fontana, San Jose, CA (US);
Lattice Semiconductor Corporation, Hillsboro, OR (US);
Abstract
Systems and methods are disclosed herein to provide improved verification of flash memory erasure. For example, in accordance with an embodiment of the present invention, an integrated circuit includes an array of flash memory cells. A plurality of sense amplifiers are also provided wherein each sense amplifier is associated with a plurality of the flash memory cells and adapted to detect a state of one of the associated flash memory cells selected from the plurality of flash memory cells. A first logic circuit is also provided to receive the states of the selected flash memory cells from the sense amplifiers and perform a first logic operation at approximately the same time on the states to verify that all states of the selected flash memory cells correspond to an erased state.