US 2025/0022498 A1Published application

Magnetic memory and memory system

AssigneeKioxia Corporation

InventorsShogo MUTO, Masanobu SHIRAKAWA, Hideki YAMADA, Ryo YAMAKI, Yoshihiro UEDA, Tsuyoshi KONDO

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Abstract

A first circuit outputs first information indicating presence/absence of a magnetic wall between two adjacent portions among portions of a magnetic body, and second information based on the combination of magnetization states of the two portions. A first storage circuit stores first bits corresponding to the portions. A most significant bit of the first bits has a value independent of a magnetization state of a corresponding one of the portions, and the first bits have a value based on the first information. A second storage circuit stores the second information. The second circuit causes the first storage circuit to output the first bits when a value of a least significant bit of the first bits matches a value of the second information, and otherwise third bits having inverse values of the first bits.

Claims20

Dependent claims

A magnetic memory comprising:

a magnetic body extending in a first direction and including portions aligned in the first direction;
a first circuit configured to output first information indicating presence or absence of a magnetic wall between two portions which are adjacent among the portions, and second information based on the combination of magnetization states of the two portions;
a first storage circuit configured to store first bits respectively corresponding to the portions, where a most significant bit of the first bits has a value independent of a magnetization state of a corresponding portion among the portions, and each of the first bits has a value based on the first information;
a second storage circuit configured to store the second information in a second bit;
and
a second circuit configured to cause the first storage circuit to output the first bits when a value of a least significant bit of the first bits matches a value of the second information stored in the second storage circuit, and cause the first storage circuit to output third bits having inverse values of the first bits in respective bits when the value of the least significant bit is different from the value of the second information stored in the second storage circuit.

3 more elements

A memory system comprising:

a magnetic body extending in a first direction and including portions aligned in the first direction;
a first circuit configured to output first information indicating presence or absence of a magnetic wall between two portions which are adjacent among the portions, and second information based on the combination of magnetization states of the two portions;
a first storage circuit configured to store first bits respectively corresponding to the portions, where a most significant bit of the first bits has a value independent of a magnetization state of a corresponding portion among the portions, and each of the first bits has a value based on the first information;
a second storage circuit configured to store the second information in a second bit;
and
a second circuit configured to cause the first storage circuit to output the first bits when a value of a least significant bit of the first bits matches a value of the second information stored in the second storage circuit, and cause the first storage circuit to output third bits having inverse values of the first bits in respective bits when the value of the least significant bit is different from the value of the second information stored in the second storage circuit.

3 more elements

Dependencies are inferred from the claim text.