Semiconductor memory device

Details Semiconductor memory device Semiconductor memory device

2004-12-30

2009-11-10

Sheikh, Ayaz R (Department: 2419)

Multiplex communications

Pathfinding or routing

Through a circuit switch

C370S379000, C370S382000, C370S378000, C365S051000, C365S063000, C365S230030

Reexamination Certificate

active

07616630

ABSTRACT:
A semiconductor memory device resolves skew problem due to delay difference between the case when data that is inputted through data input/output (IO) pin is transferred to one global I/O bus and the case when transferred to another global I/O bus based on data width option. The semiconductor memory device includes a first data IO pad formed at one side of a chip, a second data IO pad formed at the other one, a first global data bus receiving data from the first data IO pad, a second global data bus receiving data from the second data IO pad, a first data path for transferring data from the first data IO pad to the first global data bus, a second data path for transferring data from the first data IO pad to the second global data bus, and a third data path for transferring data inputted to the second data IO pad to the first global data bus depending on data width option, wherein data transfer time of the second data path is substantially equal to data transfer time of the third data path.

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