A semiconductor memory device of the present invention comprises a memory cell group having a plurality of memory cells for storing data therein and a plurality of word lines each used to select a desired memory cell, a first signal line held at a first potential which enables the memory cells to operate...http://www.google.com/patents/US5347488?utm_source=gb-gplus-sharePatent US5347488 - Semiconductor memory device for generating a controlling signal to select a word line
