| 摘要 |
A level conversion circuit is provided, at an output, with an initialization circuit for setting the output signal of the level conversion circuit for generating a power cut enable signal controlling a deep power down mode to a predetermined inactive state upon power up. The initialization circuit is constituted by, for example, a capacitive element connected to the output node of the level conversion circuit to pull up the voltage of the output node upon power up, and a latch circuit latching the voltage level of the output node. When power is on, the power cut enable signal is forcibly inactivated by the initialization circuit to generate a periphery power supply voltage. The internal node of the level conversion circuit is initialized according to the output signal of a control circuit receiving the periphery power supply voltage as an operating power supply voltage. In semiconductor memory device having a deep power down mode, an internal voltage is generated reliably and properly upon power up of an internal voltage.
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