| 摘要 |
According to one embodiment, a nonvolatile semiconductor memory device includes a nonvolatile memory, and a controller having a first mode to perform data transfer in response to one of a rising edge and falling edge of a first control signal and a second mode to perform data transfer in response to both of a rising edge and falling edge of a second control signal. The controller switches the first and second modes in data input and data output.
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