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:
May. 23, 2006
Filed:
Oct. 02, 2003
Kenichi Fukui, Kodaira, JP;
Mitsuru Hiraki, Kodaira, JP;
Takayasu Ito, Higashimurayama, JP;
Isao Nakamura, Fussa, JP;
Kenichi Fukui, Kodaira, JP;
Mitsuru Hiraki, Kodaira, JP;
Takayasu Ito, Higashimurayama, JP;
Isao Nakamura, Fussa, JP;
Renesas Technology Corp., Tokyo, JP;
Renesas Northern Japan Semiconductor, Inc., Hokkaido, JP;
Abstract
In a semiconductor integrated circuit device, having a pair of voltage step-down power supply circuits for active and standby conditions, a first reference voltage is formed by amplifying a fixed voltage formed in a fixed voltage generating circuit with an amplifying circuit which can adjust the voltage gain having a resistance circuit and a switch controlled with a first trimming switch setting signal. An internal step-down voltage, when the internal circuit is in the active condition, is outputted from a first output buffer, which is activated with a first control signal. A second reference voltage is formed by adjusting a combination of threshold voltages of MOSFETs and a switch controlled with a second trimming switch setting signal; and, an internal step-down voltage, when the internal circuit is in the standby condition, is outputted with a second output buffer, which is activated with a second control signal.