Semiconductor memory deivce

The present invention is the data that is intended to provide to eliminate unnecessary operations of applying the data to the global data line during the read operation are latched to a semiconductor memory device which can reduce the current consumption, the present invention for this purpose is transmitted to the global data line the 1 global data latch for latching in response to the write operation control signal; The data latched to the latch receiving global data write operation in response to a second control signal a local data write driver for outputting to the local data lines; And a semiconductor memory having a first write operation control signal and the second write operation, but outputs the control signal, the period is a write command that is not executed, the write driver control unit for controlling so that the output is disabled, the first write operation control signal It provides an apparatus. Semiconductor, light command, a read command, the global data latch.