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. 05, 1993
Filed:
Jan. 21, 1993
James W Sloan, Austin, TX (US);
Timothy J Mennitt, Cedar Park, TX (US);
John P Warren, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A semiconductor device (10) includes test-only leads (20) and operational leads (18). Operational leads (18) provide access to portions of a semiconductor die (12) needed for device operation. Test-only leads (20) provide access to portions of die (12) which are not needed for device operation, but which are needed during manufacturing tests. Operational leads (18) have an external configuration which facilitates attachment to a user substrate. Test-only leads (20) have an external configuration which enables electrical access to the device for test purposes; however, the test-only lead configuration makes attachment to the user substrate difficult. Since the test-only leads (20) and the operational leads (18) have two different external lead configurations, overall lead pitch is reduced, enabling device (10) to be made very small. Yet, complexity of mounting device (10) to a user substrate is not increased since the pitch between adjacent operational leads (18) can be made larger than the overall lead pitch.