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Flash EEPROM system with erase sector select

  • US 5,418,752 A
  • Filed: 10/20/1992
  • Issued: 05/23/1995
  • Est. Priority Date: 04/13/1989
  • Status: Expired due to Term
First Claim
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1. A Flash EEprom system comprising:

  • one or more integrated circuit chips each having an array of Flash EEprom cells partitioned into a plurality of sectors, each sector addressable for erase such that all cells therein are erasable simultaneously;

    means for selecting a plurality of sectors among the one or more chips for erase operation;

    means for simultaneously performing the erase operation on only the plurality of selected sectors; and

    individual register associated with each sector for holding a status to indicate whether the sector is selected or not.

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