Embedded arrays add compiled memory to customize gate arrays. (LSI Logic Corp.'s LEA200K embedded gate array ASIC) (product announcement)

EDN, July, 1991 by Quinnell, Richard A.

You have to use a lot of gates to create a block of memory when designing with conventional gate arrays, so many memory-intensive designs have gone the route of standard-cell ASICs. The LEA200K embedded array family offers a way of adding high-density memory to an ASIC without sacrificing the lower production costs of a gate array.

The family's base gate array uses the 0.7-[micrometer] (drawn) channel-length CMOS technology used in the vendor's LCA200K series. Family members come from 1 of 13 array sizes, ranging from 66,156 to 307,500 available gates. You can choose between 2- and 3-layer metallization, depending on your need. You use the lower-cost 2-layer metal if your design is I/O pad limited and gate density is not critical. For high-density...

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