Introduction

GAL Device Architectures

Introduction

In 1985, Lattice Semiconductor introduced a new type of programmable logic device (PLD) called the Generic Array Logic (GAL) device. GALs are based on a high-performance CMOS process and offer a combination of speed, flexibility, and testability.

Features of GAL Devices

• High-speed: GALs have a maximum propagation delay time of 35 ns.
• Flexibility: GALs can be programmed to implement a wide variety of logic functions.
• Testability: GALs have unique test circuitry that allows for complete AC, DC, and functional testing during manufacture.

Applications of GAL Devices

GALs are used in a wide variety of applications, including:

• Computer peripherals
• Industrial controls
• Telecommunications equipment
• Military and aerospace systems