The semiconductor memory device has a word configuration determination signal generating circuit including a plurality of generating circuits, each of which is formed of two clocked inverters and two inverters. In a normal operation mode, a test mode signal TX4 is inactivated and a word configuration...http://www.google.com.tw/patents/US6335887?utm_source=gb-gplus-share專利 US6335887 - Semiconductor memory device allowing switching of word configuration