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:
Oct. 28, 2008
Filed:
Feb. 01, 2007
Roland Barth, München, DE;
Roland Barth, München, DE;
Qimonda AG, Munich, DE;
Abstract
An integrated semiconductor memory device includes a clock terminal that applies an external clock signal. Read and write accesses are controlled synchronously with the external clock signal. A frequency detector is connected to the clock terminal to detect the frequency of the external clock signal. The frequency detector circuit generates a control signal in a manner dependent on the frequency of the external clock signal, the control signal being used to drive a controllable voltage generator, which generates a level of an internal supply voltage in a manner dependent on the control signal, from which supply voltage further control and supply voltages are derived. The integrated semiconductor memory device makes it possible to adapt the level of internally generated voltages of the integrated semiconductor memory device to the frequency of the external clock signal.