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:
Nov. 24, 1998
Filed:
Apr. 10, 1997
Applicant:
Inventor:
Seishi Notomi, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518909 ; 36518907 ; 36518911 ;
Abstract
An SRAM using Schottky gate FETs and immune to variations in the process parameters or a change in temperature, and which does not permit the voltage amplitude of the bit lines to be changed by variations in the process parameters or by a change in temperature. This is accomplished by providing a bit line pull-up circuit 100 which is so constituted that a voltage difference between the reference voltages Vref1 and Vref2 that do not change depending upon the temperature is reflected on the voltage amplitude of the bit lines BL, BL during the reading operation.