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:
Aug. 24, 2010
Filed:
Nov. 07, 2007
Kenichi Anzou, Kawasaki, JP;
Chikako Tokunaga, Yokohama, JP;
Kenichi Anzou, Kawasaki, JP;
Chikako Tokunaga, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An integrated circuit device according to an embodiment of this invention includes: a memory having: a first port to which a first clock signal is input, and a second port to which a second clock signal is input; and a built-in self test circuit having: a first signal generating circuit to which the first clock signal is input, a second signal generating circuit to which the second clock signal is input, a clock selecting circuit to which the first and second clock signals are input and which selects and outputs one of the input clock signals, and a controlling circuit which outputs a clock requesting signal requesting one of the first and second clock signals to the clock selecting circuit, operates in accordance with the clock signal selected and output by the clock selecting circuit, and outputs a controlling signal for controlling one of the first and second signal generating circuits.