Field programmable loglc

Field programmable loglc

Publish Date:2019-09-25 15:46:05 Clicks: 240


So far we have seen two extremes in the design options available to a digital designer-namely standard products and mask programmable ASICs. Although mask programmable ASICs offer extremely high performance they carry a large risk in terms of time and expenditure. To provide the designer with the flexibility of both, the industry has gradually developed a class of logic that can be programmed with a personal computer in the laboratory. These devices are called field programmable logic and can be either one-time programmable (utilising small fuses)or many times programmable (using either ultraviolet erasable connections or an SRAM/MUX). Because these devices contain the extra circuitry to control interconnect and functionality this overhead results in a family which is less complex and slower than the mask programmable ASICs. However, the attraction of a much lower risk can outweigh the performance problems especially for prototyping purposes.

 These field programmable logic devices are divided into two groups:

• ereidland- OR programmable architectures;

• field programmable gate arrays or FPGAS.

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