PAL20R8-12/B3A

Programmable Logic Device Pld Overview

The PAL20R8-12/B3A is a high-speed, electrically erasable programmable logic device (EPLD) manufactured by Advanced Micro Devices. It utilizes CMOS technology to provide reconfigurable logic within a 24-pin package. The device features macrocells that allow outputs to be individually programmed as either registered or combinatorial. Key electrical characteristics include a maximum propagation delay of 12 ns and operation with a supply voltage range typical for standard CMOS logic. It supports automatic register reset on power-up and offers programmable output polarity for flexible interface design.

Programmable Logic Device Pld Feature Summary

• Electrically erasable CMOS technology enabling full reconfigurability and testability
• Direct pin-compatible replacement for standard PAL20R8 series devices
• Individual output programming for registered or combinatorial modes
• Automatic register reset on power-up and preloadable output registers

Programmable Logic Device Pld Applications

• High-speed digital logic replacement in legacy systems
• State machine implementation in embedded controllers
• Address decoding and bus arbitration circuits

Programmable Logic Device Pld Part Context

This component belongs to the PAL20R8 family of complex programmable logic devices. It serves as a drop-in replacement for older bipolar PAL technologies, offering lower power consumption and higher density while maintaining compatibility with existing 24-pin footprints. The 'B3A' suffix typically denotes specific packaging or environmental compliance variations within AMD's product line.

Programmable Logic Device Pld Replacement Considerations

The PALCE20V8 from Lattice Semiconductor is a confirmed functional substitute. It maintains pin and function compatibility with PAL20R8 devices and offers similar electrically erasable CMOS architecture. Designers should verify timing parameters, as the PALCE20V8-5 variant offers faster performance than the PAL20R8-12.