EPC1LC20N: Intel's Reliable OTP Configuration PROM for Legacy FPGA Systems

Comprehensive Product Overview

The EPC1LC20N represents Intel's proven solution for Field Programmable Gate Array (FPGA) configuration storage. As an obsolete but still critically important component, this One-Time Programmable memory IC continues to support thousands of industrial systems worldwide. With increasing demand for legacy part replacements, understanding this device's capabilities becomes essential for engineers maintaining older FPGA designs.

Detailed Technical Specifications

• Memory Architecture: 1Mb (128KB) serial configuration PROM with 20ns access time
• Programming Interface: IEEE 1532-compliant for standardized in-system programming
• Data Retention: 20+ years typical at 55 C operation
• Package Robustness: 20-PLCC (9 9mm) with J-lead solder joints for vibration resistance
• Security Features: Permanent write protection after programming

Why Engineers Still Specify the EPC1LC20N

Despite its obsolescence status, the EPC1LC20N offers unique advantages for certain applications:

1. Unmatched Reliability in Harsh Environments

With industrial-grade temperature tolerance and >100k program/erase cycles, this PROM outperforms many modern alternatives in factory automation settings. The OTP nature eliminates configuration corruption risks from power fluctuations.

2. Seamless Compatibility

Designed specifically for Intel (formerly Altera) FPGA families including:

• Classic MAX 3000A/7000 series
• Early Cyclone devices
• Legacy Excalibur processors

3. Cost-Effective Legacy Support

For systems requiring identical replacement parts for certification compliance, the EPC1LC20N provides a drop-in solution without expensive redesigns.

Application-Specific Considerations

Industrial Control Systems

In manufacturing environments where equipment may operate for decades, the EPC1LC20N's 20-year data retention ensures continuous operation of:

• PLC backup configuration storage
• Motor control firmware
• Sensor interface modules

Telecommunications Infrastructure

Many base stations and network switches still utilize this PROM for its:

• Radiation tolerance compared to flash memory
• Deterministic boot times under all temperature conditions

Migration Alternatives and Cross-Reference

For designers transitioning to newer solutions, consider these alternatives:

Purchasing and Availability Guide

As authorized distributors of obsolete Intel components, we provide:

• Batch Authenticity Verification: Full traceability to original Intel production
• Extended Temperature Testing: Optional -40 C to +85 C qualification
• Kitting Services: Pre-programmed devices with configuration files

Technical Support Resources

Our engineering team offers:

• Schematics review for compatibility
• Programming fixture design support
• Long-term inventory planning

For immediate assistance with your EPC1LC20N requirements, contact our technical sales team today. We maintain one of the industry's largest remaining stocks of this critical FPGA configuration component, with full testing and warranty support.