A semiconductor memory unit with a repair circuit includes a controller, a 2-to-1 selector, an address decoder and an address comparator. The controller supplies the 2-to-1 selector and the address comparator with a setup signal to carry out the following control. When the 2-to-1 selector is controlled...http://www.google.com/patents/US7203870?utm_source=gb-gplus-sharePatent US7203870 - Semiconductor memory unit with repair circuit