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Everything you want to know about India's electronics industry. There certainly are exceptions to this. Some manufacturers have come up with FPGAs that have built-in configuration flash. Otherwise, for most other applications FPGAs are generally preferred. So, depending on the application you might need to use both in a particular design. So, there you go! We hope that you are now more enlightened about CPLDs vs FPGAs and can make an informed decision on which one to use depending on your application needs.
Was this helpful? Leave A Comment Cancel reply Comment. Don't miss out on new articles! The FPGA circuitries are reliable as a dedicated hardware circuitry. FPGA incorporate a large number of logic gates in one integrated circuit which makes it a good substitution for the numerous discrete components.
It implements the multiple level low fan-in gates in the logic blocks rather than two-level AND and OR gates to make it denser. The use of combinatorial logic function supports wide fan-in. This means FPGAs can be specialized for more complex computation and applications.
CPLDs are programmable using an electrically erasable programmable read-only memory EEPROM , so their configuration is stored in non-volatile memory and can be accessed even after a reboot. However, major chip makers are designing the next generation of FPGAs to have non-volatile memory, eliminating the need for an external module.
The reconfigurable nature and complicated architecture of an FPGA makes their signal processing delay unpredictable. Simply counting the number of operations executed within your FPGA is not sufficient for predicting delay. In contrast, CPLDs have much lower pin-to-pin delay for the same switching frequency due to their simpler architecture.
This is quite important to consider if you need to synchronize parallel data across different signal nets. Older CPLDs families consumed enough power to make them prohibitive in applications requiring battery power. In comparison, an FPGA running at full clock speed and switching at high frequency requires some level of thermal management; such as a passive heat sink or more intensive active methods, like using a fan or even an evaporative heat exchanger.
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