Semiconductor memory device and method of controlling...

Details Semiconductor memory device and method of controlling... Semiconductor memory device and method of controlling...

2007-05-29

2007-05-29

Hoang, Huan (Department: 2827)

Static information storage and retrieval

Floating gate

Particular connection

C711S163000, C710S305000

Reexamination Certificate

active

11067976

ABSTRACT:
A semiconductor memory device has a nonvolatile memory cell to which data writing operation is limited to a predetermined logic value. In the case of rewriting data “10101010” written in a first memory core to data “01010101”, since the data writing operation includes writing of a logic value “1” opposite to the predetermined logic value, an erasing operation is needed and the data writing is regulated. By rewriting a pointer value stored in a pointer memory in place of performing the erasing operation, an operation of switching a memory core to be selected to a second memory core (data “11111111”) is performed. Data is newly written into the second memory core selected by the rewritten pointer value.

REFERENCES:
patent: 6237110 (2001-05-01), Lin et al.
patent: 6446177 (2002-09-01), Tanaka et al.
patent: 6510090 (2003-01-01), Chida
patent: 2003/0070025 (2003-04-01), Watts et al.
patent: 2004/0010773 (2004-01-01), Chan et al.
patent: 2002-83872 (2002-03-01), None
patent: 2002-118187 (2002-04-01), None

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