simple programmable logic device (SPLD) Programmable logic device, usually containing either a single PAL or PLA.
programmable array logic (PAL) Contains a programmable and-plane followed by a fixed or-plane.
antifuse A structure in an integrated circuit that when programmed makes a permanent connection between two wires.
Before we discuss FPGAs, it is useful to talk about how FPDs are configured. Configuration is essentially a question of where to make or break connections. Gate and register structures are static, but the connections can be configured. Notice that by configuring the connections, a user determines what logic functions are implemented. Consider a configurable PLA: by determining where the connections are in the and-plane and the ...
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