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Semiconductor memory device for controlling reservoir capacitor

  • US 7,606,103 B2
  • Filed: 09/26/2006
  • Issued: 10/20/2009
  • Est. Priority Date: 09/29/2005
  • Status: Active Grant
First Claim
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1. A semiconductor memory device comprising:

  • a power supply unit for receiving and delivering a power supply voltage;

    a reservoir capacitor for storing the power supply voltage provided from the power supply unit; and

    a mode controller for disconnecting the power supply unit from the reservoir capacitor in response to a mode selection signal when a current operation mode is a test mode and connecting the power supply unit to the reservoir capacitor in response to the mode selection signal when the current operation mode is a normal mode,wherein the mode selection signal has a different state depending on a combination of a plurality of control signals for mode setting.

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