| 摘要 |
A NAND flash memory device is provided to read out required data without finishing all programs of numerous data, by comprising a control circuit preventing a collision between data to be programmed and data for a read operation. A NAND flash memory device includes a plurality of planes and a plurality of page buffer blocks corresponding to the respective planes. An input/output buffer circuit transfers/receives data to/from the page buffer blocks. A control circuit controls the page buffer blocks and the input/output buffer circuit. The control circuit controls the page buffer blocks and the input/output buffer circuit in order to prevent data read out from the second plane ending a read operation while data is written into the first plane from colliding with data loaded on the third plane in the input/output buffer circuit.
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