Nonvolatile memory device with reduced coupling noise and driving method thereof
First Claim
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1. A nonvolatile memory device comprising:
- a plurality of memory banks;
a read global bit line shared by the plurality of memory banks;
a write global bit line, separate from the read global bit line, shared by the plurality of memory banks;
a read circuit connected with the read global bit line and configured to perform a read operation; and
a discharge control circuit connected with the write global bit line and configured to primarily discharge a charge of the write global bit line during an initialization interval after a power-up operation.
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Abstract
Provided are nonvolatile memory devices and a driving method of the nonvolatile memory devices. The nonvolatile memory devices may include a plurality of memory banks, a read global bit line shared by the plurality of memory banks, a write global bit line shared by the plurality of memory banks, a read circuit connected with the read global bit line and performing a read operation, and a discharge control circuit connected with the write global bit line and primarily discharging the write global bit line during an initialization interval after a power-up operation.
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Citations
20 Claims
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1. A nonvolatile memory device comprising:
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a plurality of memory banks; a read global bit line shared by the plurality of memory banks; a write global bit line, separate from the read global bit line, shared by the plurality of memory banks; a read circuit connected with the read global bit line and configured to perform a read operation; and a discharge control circuit connected with the write global bit line and configured to primarily discharge a charge of the write global bit line during an initialization interval after a power-up operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A nonvolatile memory device comprising:
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a plurality of memory banks; a plurality of read global bit lines shared by the plurality of memory banks; a plurality of write global bit lines shared by the plurality of memory banks, wherein each read global bit line of the plurality of read global bit lines and write global bit line of the plurality of write global bit lines that share a corresponding one of the plurality of memory banks are separate from one another; a read circuit connected with the plurality of read global bit lines and configured to read data from memory cells in the plurality of memory banks through the plurality of read global bit lines; a discharge control circuit connected with the plurality of write global bit lines and configured to cyclically discharge charges of the plurality of write global bit lines; a column selection circuit configured to select one among the plurality of write global bit lines in response to a write global column selection signal and configured to select one among the plurality of read global bit lines in response to a read global selection signal; a write circuit connected with the plurality of write global bit lines and configured to write data to the memory cells in the plurality of memory banks through the plurality of write global bit lines; and a controller configured to control the read circuit, the discharge control circuit, the column selection circuit and the write circuit. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A memory card comprising:
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a card controller configured to control an operation of the memory card; and a nonvolatile memory coupled to the card controller, wherein the nonvolatile memory includes; a plurality of memory banks; a plurality of read global bit lines shared by the plurality of memory banks; a plurality of write global bit lines shared by the plurality of memory banks, wherein each read global bit line of the plurality of read global bit lines and write global bit line of the plurality of write global bit lines that share a corresponding one of the plurality of memory banks are separate from one another; a read circuit connected with the plurality of read global bit lines and configured to read data from memory cells in the plurality of memory banks through the plurality of read global bit lines; a discharge control circuit connected with the plurality of write global bit lines, the discharge control circuit being configured either to cyclically discharge charges of the plurality of write global bit lines or to discharge charges of the plurality of write global bit lines during an initialization interval after a power-up operation; a write circuit connected with the plurality of write global bit lines and configured to write data to the memory cells in the plurality of memory banks through the plurality of write global bit lines; and a memory controller configured to control the read circuit, the discharge control circuit, and the write circuit. - View Dependent Claims (19, 20)
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Specification