SEMICONDUCTOR MEMORY DEVICE AND METHOD OF INPUTTING AND OUTPUTTING DATA FOR THE SEMICONDUCTOR MEMORY DEVICE

摘要

A semiconductor memory device and a data input/output method thereof are provided to reduce the number of input lines and output lines by using control signals with different enabled periods without using a multiplexer. A semiconductor memory device includes a memory core and an input circuit(1300). The input circuit generates second data having bits, where the number of bits 2N times the number of bits of first data, using latch circuits operating in response to input control signals with different enabled periods, and provides the second data to the memory core. An output circuit generates fourth data having bits, where the number of bits is 1/(2N) times the number of bits of third data outputted from the memory core, using latch circuits operating in response to output control signals with different enabled periods, and provides the fourth data to an output pin.