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:
Oct. 07, 1997
Filed:
May. 28, 1996
Yukihiro Nomura, Kawasaki, JP;
Shigemasa Ito, Kasugai, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An LSI device can provide a desired constant value of a step-down voltage even if there are variations due to the production processes and a stable characteristic of internal circuits is obtained. The LSI device such as a DRAM includes a first input terminal of the high-voltage-side external supply voltage, a constant current source and a second input terminal of the low-voltage-side supply voltage. Further, the device includes a circuit which makes a voltage between two terminals variable due to the disconnection of each fuse. A step-down circuit is formed by the constant current source and the load circuit and provides a step-down voltage V.sub.B for stepping down the external supply voltage V.sub.CC.