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:
Feb. 19, 2013
Filed:
Jul. 15, 2011
Hiromi Notani, Kanagawa, JP;
Issei Kashima, Kanagawa, JP;
Hiromi Notani, Kanagawa, JP;
Issei Kashima, Kanagawa, JP;
Renesas Electronics Corporation, Kawasaki-Shi, JP;
Abstract
The present invention provides a semiconductor chip which is insusceptible to noise and whose consumption current is small. In a semiconductor chip, an internal power supply voltage for an internal circuit block is generated by a regulator having small current drive capability and a regulator having large current drive capability. A voltage buffer is provided between a reference voltage generating circuit and the regulator having large current drive capability. In a low-speed operation mode, the voltage buffer and the regulator having large current drive capability are made inactive. Therefore, noise in reference voltage is suppressed, and consumption current can be reduced.