Nonvolatile semiconductor memory device

Details Nonvolatile semiconductor memory device Nonvolatile semiconductor memory device

1997-11-12

1999-07-06

Nguyen, Tan T.

Static information storage and retrieval

Floating gate

Particular biasing

36518503, G11C 1600

Patent

active

059205075

ABSTRACT:
A non-volatile semiconductor memory device comprising a memory cell array having a plurality of electrically writable memory cells arranged in a matrix form, each of the memory cells having three or more logic states so as to store a multi-value data "i" (i=0, 1, . . . , n-1: n.gtoreq.3), a plurality of data latch circuits for temporarily storing data controlling a write state of the plurality of memory cells of the memory array, write verify circuit for confirming the write state of the plurality of memory cells, and an "i" data batch verify circuit for batch-detecting whether or not the memory cell where data "i" should be written reaches a memory state of data "i."

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