Nonvolatile memory with lockable cells

Details Nonvolatile memory with lockable cells Nonvolatile memory with lockable cells

1997-11-05

1999-07-13

Nguyen, Viet Q.

Static information storage and retrieval

Floating gate

Particular connection

36518511, 36518513, 36518523, 36518529, 365218, G11C 700

Patent

active

059235861

ABSTRACT:
Disclosed is a nonvolatile memory having lockable cell array. The memory includes a lockable cell array formed of a plurality of lockable cell transistors and lockable word lines coupled to gates of the lockable cell transistors; and a lockable pass transistor array formed of a plurality of lockable pass transistors connecting the lockable word lines to a plurality of selection signals. The lockable word lines are coupled to boosting elements which are in response to capacitive coupling in a bulk during an unlock operation.

REFERENCES:
patent: 5274599 (1993-12-01), Ema
patent: 5513136 (1996-04-01), Fandrich et al.
patent: 5737258 (1998-04-01), Choi et al.
patent: 5809553 (1998-09-01), Choi et al.

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