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Semiconductor memory device

  • US 20010017813A1
  • Filed: 02/22/2001
  • Published: 08/30/2001
  • Est. Priority Date: 02/24/2000
  • Status: Active Grant
First Claim
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1. A semiconductor memory device comprising:

  • isolation circuits disconnecting cell arrays from sense amplifiers; and

    isolation signal generating circuits generating isolation signals that control the isolation circuits, the isolation signal generating circuits being hierarchically divided into main isolation signal generating circuits and sub isolation signal generating circuits, the sub isolation signal generating circuits generating sub isolation signals having a first potential on a high-potential side, the main isolation signal generating circuits generating main isolation signals having a second potential on the high-potential side, the second potential being lower than the first potential.

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