The semiconductor memory receives an external clock signal and has the memory cell array access operation controlled based on the clock signal. In the application of this semiconductor memory to a dynamic RAM, for example, a row address and column address are introduced in synchronism with the clock...http://www.google.co.uk/patents/US5083296?utm_source=gb-gplus-sharePatent US5083296 - Semiconductor memory with alternately multiplexed row and column addressing
