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:
Dec. 24, 1996
Filed:
Aug. 04, 1995
Mehdi Jazayeri, Cupertino, CA (US);
Edward S Hui, Cupertino, CA (US);
George J Korsh, Redwood City, CA (US);
Atmel Corporation, San Jose, CA (US);
Abstract
A low voltage EPROM which increases its reading speed by charging a word line to a voltage higher than vcc during a read operation. Two voltage pumps, which alternately place charge on a word line, receive control signals of opposite phase from a temperature insensitive oscillator. The voltage from the two voltage pumps passes through a zero threshold voltage n-type pass device to a word line. The zero threshold voltage n-type pass device receives its control signal from a third voltage pump. In order to make the low voltage EPROM compatible with standard 5V programmers, each output driving circuit consists of a large output driver used under low voltage V.sub.cc conditions and a smaller output driver used under standard 5V V.sub.cc conditions.