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:
May. 22, 2007
Filed:
May. 01, 2003
Masaaki Tanimura, Tokyo, JP;
Masaaki Tanimura, Tokyo, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
A semiconductor integrated circuit includes a pin section, internal circuits, an interface section, an expectation value generation circuit, a comparison circuit and a waveform generation circuit. In a first test mode, the expectation value generation circuit generates expectation values of operation signals to be generated by the interface section when first test signals having the same waveform are input via respective pins of the pin section, and the comparison circuit compares operation signals that are actually produced by the interface section with the respective expectation values and produces comparison results. In a second test mode, the waveform generation circuit supplies second test signals to the interface section, and the interface section outputs test output signals having the same waveform to the external system via respective pins of the pin section.