Semiconductor memory device
AssigneeToshiba Memory Corporation
InventorsFumiyoshi Matsuoka, Kosuke Hatsuda
Life of this patent
Estimating the term…
Abstract
According to one embodiment, a semiconductor memory device comprises a first memory cell including a first resistance change element; and a write circuit configured to write data to the first memory cell. The write circuit includes a first circuit including a first input terminal supplied with a first signal based on read data from the first memory cell and a second input terminal supplied with a second signal based on write data to the first memory cell; and a second circuit including a first input terminal supplied with a third signal from an output terminal of the first circuit and a second input terminal supplied with a fourth signal.
Claims17
A semiconductor memory device comprising:
- a first memory cell including a first resistance change element;
- and
- a write circuit configured to perform write to the first memory cell,
- wherein the write circuit includes:
- a first circuit including a first input terminal supplied with a first signal based on read data from the first memory cell and a second input terminal supplied with a second signal based on write data to the first memory cell;
- and
- a second circuit including a first input terminal supplied with a third signal from an output terminal of the first circuit and a second input terminal supplied with a fourth signal.
A semiconductor memory device comprising:
- a first memory cell including a first resistance change element;
- and
- a write circuit configured to write data to the first memory cell,
- wherein after reading, the write circuit performs first write and performs second write after an interruption of the first write, and maintains a first signal at a first logic level when read data from the first memory cell, first write data in the first write, and second write data in the second write are all equal, and
- wherein the write circuit further includes a write driver configured to be driven based on the first signal.
Dependencies are inferred from the claim text.