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:
Dec. 04, 2001
Filed:
Jun. 16, 2000
Geordie Maria Braceras, Essex Junction, VT (US);
Harold Pilo, Underhill, VT (US);
Dale E. Pontius, Colchester, VT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An on-chip I/O timings measurement circuit that improves measurement accuracy compared to conventional external test methods. This circuit guarantees AC timing specifications that are too small for the measurement capabilities of today's high-frequency memory testers. This system in incorporated into the SRAM via the JTAG interface and a JTAG private instruction. A private instruction refers to an unused instruction from the industry-standard public instruction set. Private instructions are usually reserved for the manufacturer, but may be provided to the user as an enhancement to the standard JTAG instruction set.