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:
Sep. 11, 2007
Filed:
Jan. 30, 2007
Minoru Senda, Hyogo, JP;
Kiyohiro Furutani, Hyogo, JP;
Taku Ogura, Hyogo, JP;
Shigehiro Kuge, Hyogo, JP;
Satoshi Kawasaki, Hyogo, JP;
Tadaaki Yamauchi, Hyogo, JP;
Minoru Senda, Hyogo, JP;
Kiyohiro Furutani, Hyogo, JP;
Taku Ogura, Hyogo, JP;
Shigehiro Kuge, Hyogo, JP;
Satoshi Kawasaki, Hyogo, JP;
Tadaaki Yamauchi, Hyogo, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
In the present semiconductor device a positive, driving pump circuit is driven by an external power supply potential EXVDD (for example of 1.8V) to generate a positive voltage VPC (for example of 2.4V). A negative pump circuit for internal operation is driven by the positive voltage VPC to generate a negative voltage VNA (for example of −9.2V) required in an erasure or similar internal operation for a word line. The negative pump circuit for internal operation can have a smaller number of stages of pump and hence consume a smaller area than when the circuit is driven by the external power supply voltage EXVDD (for example of 1.8V) as conventional.