Semiconductor memory device for controlling cell block with state machine

摘要

A semiconductor memory device for an effective data access operation includes a cell area having N+1 number of unit cell blocks, each including M number of word lines, for storing a data in a unit cell corresponding to an inputted address; N+1 number of unit controlling blocks having respective state machines and corresponding to the respective N+1 unit cell blocks for controlling a data restoration that is accessed from a first unit cell block selected from the N+1 unit cell blocks into the first unit cell block or a second unit cell block; and a driving controlling block for controlling the N+1 unit cell blocks so that the N+1 unit controlling means are in one of first to fourth operation states.