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. 21, 2000
Filed:
May. 21, 1997
James S Caravella, Chandler, AZ (US);
David F Mietus, Phoenix, AZ (US);
Jeremy W Moore, Chandler, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A memory circuit (24) limits the threshold voltage distribution for either programming or erasing a memory cell (40A) in a non-volatile memory array (34). A data latch (90) provides a current (I.sub.REF) to the memory cell (40A) that increases in current as the operating temperature of the memory cells (40A, 40B) increases. Current generated by the data latch (90) increases when the processing parameters cause a greater conductivity of the transistors in the memory cell (40A) and the current decreases when the processing parameters cause a lesser conductivity of the transistors in the memory cell (40A), thus allowing narrower limits on the distribution of the program and erase threshold voltages.