| 摘要 |
PURPOSE: A buffer enable signal generation circuit and an input circuit are provided to reduce an unnecessary current consumption in a standby state by activating an address buffer and a command buffer for a prescribed section in case an outer command is inputted. CONSTITUTION: A buffer enable signal generation circuit(1) generates the buffer enable signal in response to an outer command. The buffer enable signal decides an enable section. A buffer circuit(2) buffers and outputs the outer command and an outer address signal in response to the buffer enable signal. The buffer circuit includes an address buffer and a command buffer. The address buffer(20) buffers and outputs the outer address signal in response to the buffer enable signal. The command buffer(21) buffers and outputs a first to a fourth outer command in response to the buffer enable signal.
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