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. 16, 2006
Dirk Fuhrmann, Apex, NC (US);
Matthias Skalitz, Unterschleiβheim, DE;
Dirk Fuhrmann, Apex, NC (US);
Matthias Skalitz, Unterschleiβheim, DE;
Infineon Technologies AG, Neubiberg, DE;
Abstract
An integrated semiconductor memory includes a clock generator circuit for generating an internal clock signal that exhibits a certain phase angle with respect to an external clock signal. The phase angle is dependent on a value of the supply voltage of the clock generator circuit. The supply voltage is provided by a controllable voltage generator that includes a controllable resistor. During the production process, the supply voltage generated can be picked up at a contact pad. The value of the controllable resistor is changed in each memory chip by an automatic production machine until the supply voltage generated matches a target value. The controllable voltage generator can be adjusted individually for each memory chip via fuse elements so that the target value of the supply voltage is achieved with high accuracy for each memory chip.