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. 30, 2004
Filed:
Jan. 26, 2001
Hideo Akiyoshi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
The semiconductor integrated circuit is provided with a plurality of sub reset signal generators and a main reset signal generator. The sub reset signal generators respectively generate sub power-on reset signals whose timings differ from each other. The main reset signal generator generates a main power-on reset signal according to at least one from any of the sub power-on reset signals. Therefore, even where the characteristics of elements constituting the semiconductors integrated circuit change due to changes in the manufacturing conditions of the semiconductor integrated circuit, one of the sub power-on reset signals is generated at a normal timing. As a result, the main reset signal generator is able to generate a main power-on reset signal by using a normal sub power-on reset signal. That is, it is possible to constitute a power-on resetting circuit having a wide operation margin, wherein the internal circuits can be initialized without fault.