| 摘要 |
A semiconductor memory device selects data strobe types according to an operating mode. The buffer selection circuit selects one of a first operating mode and a second operating mode, and generates an output buffer control signal and an input buffer control signal. The output buffer reads first data stored in the memory cell array, and outputs the first data to the input/output pad under the control of the output buffer control signal. The input buffer receives second data from the input/output pad, and writes the second data to the memory cell array under the control of the input buffer control signal. Accordingly, the semiconductor memory device is capable of transmitting data both in the bilateral strobe type and in the unilateral strobe type.
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