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Technology Stocks : WDC/Sandisk Corporation -- Ignore unavailable to you. Want to Upgrade?

To: Binx Bolling who wrote (16997)	12/7/2000 2:18:34 AM
From: Binx Bolling	Read Replies (1) \| Respond to of 60323

United States Patent 6,157,983 (1 of 7) Lee, et. al. Dec. 5, 2000 -------------------------------------------------------------------------------- Concurrent write of multiple chunks of data into multiple subarrays of flash EEPROM Abstract An EEPROM system includes flash EEPROM cells organized into subarrays. Pairs of subarrays share row address decoders by sharing word lines, and individual subarrays have dedicated column address decoders and data registers. Each row decoder has an associated row address latch, and each column decoder has an associated column address latch. Multiple data chunks are concurrently written into the subarrays by first latching chunk addresses into the row and column address latches, and corresponding chunks of data into the data registers, then activating a programming signal to initiate concurrent programming and verifying the programming of the data chunks. -------------------------------------------------------------------------------- Inventors: Lee; Douglas J. (San Jose, CA); Mofidi; Mehrdad (Fremont, CA); Mehrotra; Sanjay (Milpitas, CA); Cernea; Raul-Adrian (Cupertino, CA). Assignee: SanDisk Corporation (Sunnyvale, CA). Appl. No.: 226,405 Filed: Jan. 6, 1999 Related U.S. Application Data Continuation of (including streamline cont.) Ser. No. 743,857, Nov. 5, 1996, Pat. No. 5,890,192. Intl. Cl. : G06F 12/00 Current U.S. Cl.: 711/103; 365/120; 365/189.05; 365/222; 711/102; 711/154 Field of Search: 711/102, 103, 104; 365/120, 189.05, 222, 230.03, 230.06, 185.09 -------------------------------------------------------------------------------- References Cited \| [Referenced By] -------------------------------------------------------------------------------- U.S. Patent Documents 4,715,017 Dec., 1987 Iwahashi 4,931,999 Jun., 1990 Umeki 5,043,940 Aug., 1991 Harari 5,163,021 Nov., 1992 Mehrotra et al. 5,168,468 Dec., 1992 Magome et al. 5,172,338 Dec., 1992 Mehrotra et al. 5,289,429 Feb., 1994 Watanabe 5,297,148 Mar., 1994 Harari et al. 5,396,468 Mar., 1995 Harari et al. 5,422,842 Jun., 1995 Cernea et al. 5,530,955 Jun., 1996 Kaneko 5,691,954 Nov., 1997 Ooishi Primary Examiner: Thai; Tuan V. Attorney, Agent or Firm: Majestic, Parsons, Siebert & Hsue 15 Claims, 12 Drawing Figures --------------------------------------------------------------------------------