| 摘要 |
The present invention provides a semiconductor memory device and memory system comprising a first semiconductor memory having a first peripheral circuit for transmitting and receiving memory data to/from a first memory cell array, a second semiconductor memory having a second peripheral circuit for transmitting and receiving the memory data to/from a second memory cell array, and a part of the peripheral circuit of the first semiconductor memory formed adjacent to the second memory cell array by a design rule of the second peripheral circuit.
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