Semiconductor memory device and method of reading the same
AssigneeHynix Semiconductor Inc.
InventorsKyu Hee Lim, Seung Ho Chang, Seong Je Park
Life of this patent
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Abstract
A semiconductor memory device includes a memory cell array including an even page cell group and an odd page cell group, and a page buffer configured to read data stored in memory cells of the even page cell group and the odd page cell group and store the read data. The page buffer comprises a first latch configured to store first even page data of the even page cell group when a first read operation is performed, a second latch configured to store odd page data of the odd page cell group when a second read operation is performed, and a third latch configured to store second even page data of the even page cell group when a third read operation is performed.
Claims12
A semiconductor memory device, comprising:
- a memory cell array including an even page cell group and an odd page cell group;
- and
- a page buffer configured to read data stored in memory cells of the even page cell group and the odd page cell group and store the read data,
- wherein the page buffer comprises:
- a first latch configured to store first even page data of the even page cell group when a first read operation is performed;
- a second latch configured to store odd page data of the odd page cell group when a second read operation is performed;
- and
- a third latch configured to store second even page data of the even page cell group when a third read operation is performed.
A method of reading a semiconductor memory device, comprising an even page cell group and an odd page cell group, the method comprising:
- performing a first read operation on the even page cell group and storing first data read from the even page cell group;
- performing a read operation on the odd page cell group and storing odd page cell data read from the odd page cell group;
- performing a second read operation on the even page cell group and storing second data read from the even page cell group;
- and
- outputting the first data or the second data as final even page cell data in response to a value of the odd page cell data read from the odd page cell group.
Dependencies are inferred from the claim text.