Shadow DRAM for programmable logic devices

Details Shadow DRAM for programmable logic devices Shadow DRAM for programmable logic devices

1995-02-24

1996-12-03

Westin, Edward P.

Electronic digital logic circuitry

Multifunctional or programmable

Having details of setting or programming of interconnections...

326 39, 365228, 395489, H03K 19177

Patent

active

055811981

ABSTRACT:
A plurality of DRAM cells are used to store the state of the programmable points in the FPGA ("FPGA DRAM cells"). A shadow DRAM array holds duplicate data of the plurality of DRAM cells. A DRAM cell of the shadow DRAM array is sensed during a refresh cycle. In this manner the refresh cycle does not alter the logic configuration of its associated FPGA DRAM cell.

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