Patent ID: 8614584
Filing Date: 2013-12-24
Classification: G01R,G11C

Abstract:
1. A continuity test circuit for a boundary pad, comprising: a pull-up transistor electrically connected between the boundary pad and a first power supply; a pull-down transistor electrically connected between the boundary pad and a first reference ground potential; a normal output conductor electrically connected to have a same electrical state as the boundary pad during normal operation; a continuity test output conductor electrically connected to have a same electrical state as the boundary pad during continuity test operation; and continuity testing control circuitry 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.