Semiconductor memory device and controller for reading data with improved speed, and method of operating the semiconductor memory device and the controller
AssigneeSK hynix Inc.
InventorSung Ho Ahn
Life of this patent
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Abstract
A semiconductor memory device includes a memory cell array, a peripheral circuit, and a control logic. The memory cell array includes a plurality of memory cells. The peripheral circuit performs a read operation on selected memory cells, among the plurality of memory cells. The control logic controls the read operation of the peripheral circuit in response to a read command that is received from an external device and determines whether to perform a discharge operation of word lines that are connected to the plurality of memory cells based on a type of the read command.
Claims8
A method of operating a controller for controlling a read operation of a semiconductor memory device including a plurality of memory cells, the method comprising:
- transmitting a first type of read command to the semiconductor memory device;
- receiving first data from the semiconductor memory device;
- and
- determining whether to transmit a second type of read command to the semiconductor memory device based on whether an error correction operation on the first data is successful,
- wherein the first type of read command controls the semiconductor memory device to perform a read operation including a word line discharge operation, and
- wherein the second type of read command controls the semiconductor memory device to perform a read operation without the word line discharge operation.
Dependencies are inferred from the claim text.