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:
Jun. 21, 2011
Filed:
Jan. 08, 2009
Kenichi Ushikoshi, Kanagawa, JP;
Nobutoshi Tsunesada, Kanagawa, JP;
Tsuyoshi Hirakawa, Kanagawa, JP;
Noriaki Komatsu, Kanagawa, JP;
Kenichi Ushikoshi, Kanagawa, JP;
Nobutoshi Tsunesada, Kanagawa, JP;
Tsuyoshi Hirakawa, Kanagawa, JP;
Noriaki Komatsu, Kanagawa, JP;
Renesas Electronics Corporation, Kanagawa, JP;
Abstract
A semiconductor integrated circuit device includes a first chip that is directly accessible from outside, a second chip that transmits and receives data to and from the first chip, the second chip being not directly accessible from outside, and a through circuit that is provided in the first chip and transmits first and second test signals input from an external device to the second chip, wherein the through circuit includes a first signal transmission path to generate a first signal by synchronizing the first test signal to a clock signal input from the external device and to output it to the second chip and a second signal transmission path to generate a second signal by synchronizing the second test signal to a test clock signal input from the external device and to output it to the second chip.