Transcription of Chapter 4: Programmable Logic Devices 4.1 Chapter Overview
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Chapter 4: Programmable Logic Devices 4.1 Chapter Overview
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. Unfortunately intellectual Property Cores will be discussed which is the latest trend for vendors to provide system-on-a-chip capability for their FPGA s.
in antifused-based devices like Actel Corporation’s ACT1, ACT2 and ACT3. Antifuse-based FPGAs have less resistance than SRAM based, which decreases delay times, but are non-reprogrammable. Nonsegmented-block or channel-array-based contain input pins connected to logic array elements that have interconnect paths to macrocells which
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