Transcription of Chapter 4: Programmable Logic Devices 4.1 Chapter Overview
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Chapter 4: Programmable Logic Devices Chapter Overview This Chapter provides an Overview on Programmable Logic Devices (PLDs) form the history of Programmable Logic Devices to the device types. PLDs come in two forms, Complex Programmable Logic Devices (CPLDs) and Field Programmable Gate Arrays (FPGAs) both having their advantages and disadvantages with respect to the specific application or design they are to be used in. The PLD used for our design, which was a CPLD from Lattice Semiconductor is discussed. There is a need for design of smaller more dense electronic designs requiring less board space as well as less power in the space and military industries there are very few PLD vendors that provide Radiation Hardened components.
Table 4.1 SPLD and CPLD Comparison 4.2.3 High Density Programmable Logic Devices The main disadvantage for the SPLD is an architectural limitation. SPLDs have a limited amount of logic structures that can be allocated in a design in a fixed way. High-density or high-capacity PLDs (HDPLDs/HCPLDs), which are also called complex
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