Nonvolatile semiconductor memory device using a command control

Details Nonvolatile semiconductor memory device using a command control Nonvolatile semiconductor memory device using a command control

1994-02-03

1995-01-10

LaRoche, Eugene R.

Static information storage and retrieval

Read/write circuit

365195, 365218, 36523003, G11C 700

Patent

active

053813693

ABSTRACT:
A nonvolatile semiconductor memory device using a command control system comprises a protect cell composed of a nonvolatile memory cell, a protect sense amplifier circuit for reading the data from the protect cell, a high-voltage sensing circuit for supplying a voltage during a programmed operation such as a writing or an erasing operation, a protect control circuit for controlling the protect cell, and a control circuit for reading the data from the protect cell and according to the read-out data, controlling the command to the memory cell array.

REFERENCES:
patent: 5097445 (1992-03-01), Yamauchi
patent: 5124946 (1992-06-01), Takahashi
patent: 5245572 (1993-09-01), Kosonocky et al.
patent: 5287317 (1994-02-01), Kobayashi et al.
patent: 5313429 (1994-05-01), Chevallier et al.
patent: 5325499 (1994-06-01), Kummer et al.

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