A semiconductor device is provided having an internal circuit to be tested, a redundancy circuit used when detecting a defective part in the internal circuit, and a switching unit connected to the internal circuit and the redundancy circuit. The switching unit switches wiring in order to ensure proper...http://www.google.com/patents/US6718496?utm_source=gb-gplus-sharePatent US6718496 - Self-repairing semiconductor device having a testing unit for testing under various operating conditions
