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. 19, 2004
Filed:
Oct. 28, 2002
Shigeki Tomishima, Hyogo, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
In each of output buffer circuits arranged corresponding to respective output pads, a first output buffer having small current driving capability for a normal operation mode and a second output buffer having large current driving capability for a test operation mode are arranged in parallel with each other. One of the first and second output buffers is enabled and the other is set to an output high impedance state alternatively in accordance with a mode designating signal. Thus, an output buffer circuit capable of driving an output pad with optimal driving capabilities in a normal operation mode and in a test operation mode in a semiconductor device for use in a system in package is implemented.