Programmable Array Logic

Programmable Array Logic (PAL) is a family of programmable logic device semiconductors used to implement logic functions in digital circuits introduced by Monolithic Memories, Inc. (MMI) in March 1978. MMI obtained a registered trademark on the term PAL for use in 'Programmable Semiconductor Logic Circuits'. The trademark is currently held by Lattice Semiconductor.PAL 16R4 Block DiagramAMD 22V10 Block DiagramAMD 22V10 Output Macrocell Programmable Array Logic (PAL) is a family of programmable logic device semiconductors used to implement logic functions in digital circuits introduced by Monolithic Memories, Inc. (MMI) in March 1978. MMI obtained a registered trademark on the term PAL for use in 'Programmable Semiconductor Logic Circuits'. The trademark is currently held by Lattice Semiconductor. PAL devices consisted of a small PROM (programmable read-only memory) core and additional output logic used to implement particular desired logic functions with few components.