SEMICONDUCTOR MEMORY DEVICE AND ITS DRIVING METHOD

摘要

PURPOSE: A semiconductor memory device and a method for driving the same are provided to regulate a column access timing based on the location of a plurality of banks. CONSTITUTION: A first column selective signal from a selection unit(330) is generated in response to a column access command which corresponds to a first bank. The first column selective signal is activated after a first period. A second column selective signal is generated in response to the column access command which corresponds to a second bank. The second column selective signal is activated after a second period. The second period is longer than the first period.