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. 20, 2007
Filed:
Feb. 25, 2005
Yoshihiro Nakatake, Miyazaki, JP;
Akihiro Narumi, Miyazaki, JP;
Yoshihiro Nakatake, Miyazaki, JP;
Akihiro Narumi, Miyazaki, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A semiconductor integrated circuit, which operates in accordance with a power supply voltage and an external clock signal and includes a memory circuit, includes a control circuit, and first and second internal circuits. The control circuit controls the memory circuit in accordance with the power supply voltage. The first internal circuit generates an internal power supply voltage for the control circuit. The second internal circuit generates an internal clock signal for the control circuit. The semiconductor integrated circuit further includes first and second power-on reset circuits. The first power-on reset circuit generates a first power-on reset signal for the first internal circuit after the power supply voltage is generated. The second power-on reset circuit generates a second power-on reset signal for the control circuit. The second power-on reset signal is input to the control circuit after the internal clock signal is input to the control circuit.