Static information storage and retrieval – Addressing – Multiple port access
Reexamination Certificate
2007-03-05
2009-12-29
Nguyen, VanThu (Department: 2824)
Static information storage and retrieval
Addressing
Multiple port access
C365S230010, C365S230020, C365S230030, C365S189040, C365S189011, C365S220000, C711S149000
Reexamination Certificate
active
07639557
ABSTRACT:
Integrated circuits such as programmable logic device integrated circuits are provided that have memory arrays that may be configured for true dual port operation or simple dual port operation. The memory arrays include memory cells arranged in rows and columns and associated row address lines and data lines. Sense amplifiers and write drivers are used for reading and writing data. Precharge drivers are used to precharge the data lines prior to read operations. Configurable multiplexer circuitry in the array has read paths through which data is provided to the sense amplifiers from the memory cells. The multiplexer circuitry has write paths through which data from the write drivers is written into the memory cells. The read paths and the write paths contain no more than a single pass gate each. Each precharge driver may be connected to a respective one of the data lines with no intervening pass gates.
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Chou Hao-Yuan Howard
Yu Haiming
Altera Corporation
Nguyen Van-Thu
Ru Nancy Y.
Treyz G. Victor
Treyz Law Group
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