Nonvolatile semiconductor memory device
First Claim
1. A nonvolatile semiconductor memory device comprising:
- a unit block cell array including a plurality of vertically layered cell arrays each including a plurality of unit cells arranged in row and column directions;
a column address decoder configured to decode a column address to activate a bit line of a cell array selected from the plurality of cell arrays;
a sense amplifier unit configured to sense and amplify data of the bit line of the plurality of cell arrays and shared by the unit block cell array; and
a vertical address decoding unit configured to decode a vertical address to select one of the plurality of cell arrays and to connect an output signal from the sense amplifier to the bit line of the selected cell array.
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Abstract
A nonvolatile semiconductor memory device includes a plurality of 3-dimensional cell arrays to reduce the chip size. The nonvolatile semiconductor memory device includes a unit block cell array including a plurality of vertically multi-layered cell arrays each including a plurality of unit cells arranged in row and column directions, a column address decoder configured to decode a column address to activate a bit line of the selected cell array from the plurality of cell arrays, a sense amplifier unit configured to sense and amplify data of the bit line of the plurality of cell arrays and shared by the unit block cell array, and a vertical address decoding unit configured to decode a vertical address to select one of the plurality of cell arrays and to connect an output signal from the sense amplifier to the bit line of the selected cell array.
33 Citations
20 Claims
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1. A nonvolatile semiconductor memory device comprising:
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a unit block cell array including a plurality of vertically layered cell arrays each including a plurality of unit cells arranged in row and column directions;
a column address decoder configured to decode a column address to activate a bit line of a cell array selected from the plurality of cell arrays;
a sense amplifier unit configured to sense and amplify data of the bit line of the plurality of cell arrays and shared by the unit block cell array; and
a vertical address decoding unit configured to decode a vertical address to select one of the plurality of cell arrays and to connect an output signal from the sense amplifier to the bit line of the selected cell array. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification