M5-512/256-10SAI

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Embedded applications often have to fulfill customer-specific functions to make systems more tailored to their specific needs. CPLD (Complex Programmable Logic Devices) devices are used extensively in embedded applications to provide the custom logic and flexibility required. This article will explore the particular application field and working principle of the M5-512/256-10SAI CPLD, an example of the type of CPLD used in embedded applications.

What is a M5-512/256-10SAI?

The M5-512/256-10SAI CPLD is an advanced field programmable logic device (FPLD). It is made up of a 5-million gate array of logic blocks, 256x144 general purpose I/O pins, two highly-parallel data busses, and 10 sector-based eraseable programmable read-only memory (EPROM) blocks. It is capable of providing custom logic at high clock speeds while consuming minimal power.

Applications

The M5-512/256-10SAI CPLD is used extensively in embedded applications due to its relatively low cost and high density. It is capable of providing custom logic for high speed communication between multiple components in a system, such as a RAM controller or communications device. It is also used for gate configurations, discrete timing, control and sequencer applications, as well as for digital signal processing and image processing.

Working Principle

The M5-512/256-10SAI CPLD works by organizing the logic blocks into logic planes which are interconnected by the two high-speed busses. The logic planes divide the logic into tens of thousands of logic cells interconnected by programmable interconnect lines. The programming of the logic cells is done using sector-based EPROM memory blocks, which allow the logic cells to be programmed one time, locked in and then reprogrammed as needed.

Within the CPLD, programmable inputs, outputs, combinational logic and clocked functions are intermixed and can be optimized to create custom, application-specific solutions. Logic cells in the CPLD can be programmed to perform programmable functions such as detect bus logic states, timing analysis, recognition logic, arithmetic operations and sequential logic state changes. The CPLD can also be used to form two-dimensional architectures, such as a database in which individual bits of information can be fetched from multiple memory locations.

Advantages

Using the M5-512/256-10SAI CPLD delivers numerous advantages over using traditional hard-wired logic. It offers flexibility in terms of design, which means the logic can be tailored to specific applications with ease. It is also much more energy-efficient than hard-wired logic, since it only consumes power when it is being used. As a result, its energy consumption is significantly lower than that of traditional hard-wired logic. Furthermore, its programming can be easily changed and customized to suit specific application requirements, making it ideal for applications that require frequent changes of logic. Finally, it is less costly and time-consuming to produce than hard-wired logic, making it more cost-effective for production use.

Conclusion

The M5-512/256-10SAI CPLD is an advanced field programmable logic device that is used widely in embedded applications due to its low cost and high density. Its working principle is based on logic planes which allow the logic cells to be programmed one time, locked in and then reprogrammed as needed. It offers numerous advantages over traditional hard-wired logic, including flexibility, energy efficiency, programming flexibility and cost-effectiveness. These advantages, combined with the fact that it is much less time consuming and costly than hard-wired logic, make it an ideal solution for many embedded applications.

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