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. 23, 1988
Filed:
Dec. 29, 1986
Clinton C Kuo, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A single transistor EEPROM cell comprises a source, a channel, a drain, a floating gate and a control gate. The control gate and the floating gate are co-extensive over the channel. Programming is achieved by charge injection from the channel and erasing is achieved by tunneling to the source. An array organization is disclosed which features a source/erase control line shared between two adjacent rows of the array, providing efficient byte-at-a-time erasing. An erasure scheme is disclosed which involves repetitive erase pulse-read-erase pulse cycles together with means for assuring complete erasure while preventing over-erasure from driving any cell in the array into depletion mode.