| 摘要 |
PURPOSE: A semiconductor device reduces current consumption because a command decoding unit operates by being synchronized with a decoding clock toggled only in the period requiring the operation of the command decoding unit. CONSTITUTION: A control signal generating unit (230) generates a control signal activated during a predetermined period in response to the activation of a chip selection signal. A clock control unit (240) transmits a clock to a decoding clock (DEC_CLK) during the activation period of the control signal and deactivates the decoding clock during the deactivation period of the control signal. A command decoding unit is synchronized with the decoding clock and generates an internal command by decoding the chip selection signal and one or more command signals. [Reference numerals] (230) Control signal generating unit; (AA) Command decoder |
