Static information storage and retrieval – Systems using particular element – Semiconductive
Patent
1995-08-18
1998-07-21
Fears, Terrell W.
Static information storage and retrieval
Systems using particular element
Semiconductive
365156, G11C 1300
Patent
active
057843139
ABSTRACT:
A programmable logic device (PLD) comprises at least one configurable element, and a plurality of programmable logic elements for configuring the configurable element(s). Alternatively, a PLD comprises an interconnect structure and a plurality of programmable logic elements for configuring the interconnect structure. In either embodiment, at least one of the programmable logic elements includes N memory cells. A predetermined one of the N memory cells forms part of a memory slice, wherein at least a portion of each slice of the programmable logic device is allocated to either configuration data or user data memory. Typically, one memory slice provides one configuration of the programmable logic device. In accordance with one embodiment, a memory access port is coupled between at least one of the N memory cells and either one configurable element or the interconnect, thereby facilitating loading of new configuration data into other memory slices during the one configuration. The new configuration data may include off-chip or on-chip data. The present invention typically allocates at least one slice to user data memory and includes means for disabling access to at least one of the N memory cells.
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Carberry Richard A.
Johnson Robert Anders
Trimberger Stephen M.
Wong Jennifer
Fears Terrell W.
Harms Jeanette S.
Klivans Norman R.
Xilinx , Inc.
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