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. 24, 2013
Filed:
Mar. 02, 2011
Baojing Liu, San Jose, CA (US);
Aruna Gutta, San Jose, CA (US);
Stephen Skala, Fremont, CA (US);
SanDisk Technologies Inc., Plano, TX (US);
Abstract
A continuity test circuit for a boundary pad includes a pull-up transistor electrically connected between the boundary pad and a first power supply, and a pull-down transistor electrically connected between the boundary pad and a first reference ground potential. A normal output conductor is electrically connected to have a same electrical state as the boundary pad during normal operation. A continuity test output conductor is electrically connected to have a same electrical state as the boundary pad during continuity test operation. Continuity testing control circuitry is defined to control the pull-up transistor, the pull-down transistor, and the normal output conductor during continuity test operation such that an electrical state present on the continuity test output conductor indicates a status of electrical continuity between the boundary pad and either a second power supply or a second reference ground potential to which the boundary pad should be electrically connected.