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US 2014/0177345 A1Published application
Semiconductor device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsShunpei Yamazaki, Jun Koyama
Life of this patent
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Abstract
To provide a semiconductor device that has a novel structure and achieves a higher degree of convenience, the semiconductor device is configured to include a memory cell that stores binary data or multilevel data, and a reading circuit that reads the data stored in the memory cell and transfers the data to the outside. The reading circuit includes a first reading circuit for reading binary data and a second reading circuit for reading multilevel data.
Claims20
A semiconductor device comprising:
- a bit line;
- a word line;
- a memory cell electrically connected to the bit line and the word line;
- a switch electrically connected to the bit line;
- a first comparator electrically connected to a first terminal of the switch;
- a second comparator electrically connected to a second terminal of the switch;
- and
- a third comparator electrically connected to the second terminal of the switch.
5 more elements
A semiconductor device comprising:
- a bit line;
- a word line;
- a memory cell electrically connected to the bit line and the word line;
- a switch electrically connected to the bit line;
- a first comparator electrically connected to a first terminal of the switch;
- a second comparator electrically connected to a second terminal of the switch;
- a third comparator electrically connected to the second terminal of the switch;
- and
- a writing circuit electrically connected to the bit line.
6 more elements
A semiconductor device comprising:
- a bit line;
- a word line;
- a memory cell electrically connected to the bit line and the word line;
- a first switch electrically connected to the bit line;
- a second switch;
- a first comparator electrically connected to a first terminal of the first switch and a first terminal of the second switch;
- a second comparator electrically connected to a second terminal of the first switch and a second terminal of the second switch;
- a third comparator electrically connected to the second terminal of the first switch and the second terminal of the second switch;
- a writing circuit electrically connected to the bit line;
- and
- a voltage generator circuit electrically connected to the second switch.
8 more elements
Dependencies are inferred from the claim text.