SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE

摘要

PROBLEM TO BE SOLVED: To remarkably reduce power consumed because of a junction capacity of a sub-word driver in a hierarchical word line structure. SOLUTION: A driving driver is separately installed in each of array controls ACTRL0-ACTRL7 controlling a main word driver MWD and sense amplifier banks SA0-SA8 to generate a driving signal for a sub-word driver SWD. The driving signal is supplied only to the sub-word driver SWD of any of the activated memory mats MMAT0-MMAT7. A junction capacity of the sub-word driver SWD is reduced, whereby the consumed power is decreased.