9. Programmable Logic Devices - Part A
Programmable Logic Devices (PLDs) play a crucial role in digital electronics by enabling users to configure logic functions according to their needs. This chapter contrasts fixed logic devices with PLDs, highlights the advantages and disadvantages of each, and outlines various types of PLDs, including Programmable ROMs, Programmable Logic Arrays, and Complex Programmable Logic Devices. Ultimately, the chapter provides insights into the architecture, applications, and programmability of these devices, illustrating their significance in modern electronic design.
Sections
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What we have learnt
- PLDs differ from fixed logic devices in that they can be configured by users, leading to flexible digital designs.
- The design cycle for PLDs is considerably shorter than for fixed logic devices, allowing rapid prototyping and iteration.
- Various types of PLDs, such as PROMs, PLAs, and FPGAs, serve different applications in digital electronics.
Key Concepts
- -- Programmable Logic Device (PLD)
- A device that can be programmed by the user to perform specific logic functions, allowing flexibility and adaptability in digital circuit design.
- -- Fixed Logic Device
- A device that is manufactured to perform a specific function with a permanent configuration, unable to be altered after production.
- -- Programmable ROM (PROM)
- A type of memory that can be programmed by the user to implement arbitrary combinational logic functions.
- -- Programmable Logic Array (PLA)
- A versatile PLD with a programmable AND array at the input and a programmable OR array at the output, allowing for diverse combinational logic implementations.
- -- FieldProgrammable Gate Array (FPGA)
- A highly flexible and complex PLD composed of an array of logic blocks that can be configured by the user post-manufacturing.
Additional Learning Materials
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