Programmable logic device
Evolution of PLD: Why not PROM?
Logic functions rarely require more than few product terms
PROM contains a full decoder for its address inputs.
Evolution of PLD: PAL™
PALis a trademark of Advanced Micro Devices
Evolution of PLD: RegisterPLA
Evolution of PLD: CPLD
Programmable Interconnect Array
- Capable of connecting any LAB input or output to any other LAB
possibility to produce devices with higher capacity than SPLDs.
Logic Array Blocks
- Complex SPLD-like structure
Evolution of PLD: FPGA
contains a set of basic functions (gates, FFs, memory cells)
Xilinx FPGA Configuration