EPM7256SRI208-10: Intel's High-Performance Obsolete CPLD - Complete Technical Guide

Introduction to EPM7256SRI208-10 CPLD

The EPM7256SRI208-10 represents Intel's advanced Complex Programmable Logic Device (CPLD) technology, offering engineers a robust solution for high-density digital logic implementation. While officially marked as obsolete by Intel, this 256-macrocell device continues to power critical legacy systems across industries. This comprehensive guide explores every aspect of the EPM7256SRI208-10, from its technical specifications to real-world applications, helping you understand why it remains relevant in today's electronics landscape.

Detailed Technical Specifications

Core Architecture

• Logic Capacity: 256 macrocells organized in 16 logic blocks
• Equivalent Gates: 5,000-gate capacity for complex designs
• Speed Grade: 10ns maximum propagation delay
• Package: 208-pin RQFP (28 28mm) with exposed thermal pad

Electrical Characteristics

• Voltage Range: 4.5V to 5.5V operation
• Power Consumption: Optimized for low-power applications
• I/O Count: 164 programmable I/O pins
• Temperature Range: Industrial-grade -40 C to +85 C

Key Features and Advantages

High-Performance Logic Implementation

The EPM7256SRI208-10 delivers exceptional performance with its 10ns pin-to-pin delays, enabling real-time processing for time-critical applications. The device's 256 macrocells provide ample resources for implementing complex state machines, counters, and decoders.

In-System Programmability (ISP)

Featuring JTAG-compatible ISP capabilities, this CPLD allows for field upgrades and design iterations without physical removal from the circuit board, significantly reducing development time and maintenance costs.

Robust I/O Capabilities

With 164 I/O pins supporting various voltage standards and 24mA drive strength, the device excels in interface applications requiring multiple signal conversions or level translations.

Applications in Modern Electronics

Industrial Control Systems

The EPM7256SRI208-10's reliability makes it ideal for:

• PLC (Programmable Logic Controller) implementations
• Motor control logic
• Industrial communication protocol bridging

Telecommunications Equipment

Its high-speed capabilities suit:

• Signal conditioning circuits
• Protocol conversion modules
• Timing and synchronization systems

Legacy System Maintenance

As a drop-in replacement for failed components in:

• Military/aerospace systems
• Medical diagnostic equipment
• Automotive control units

Design Considerations

Power Supply Requirements

For optimal performance:

• Implement proper decoupling (0.1 F ceramic capacitors near each power pin)
• Maintain stable 5V supply within 10% tolerance
• Consider power sequencing requirements

Thermal Management

The 208-RQFP package's exposed pad requires:

• Proper PCB thermal vias
• Adequate copper pour connection
• Potential heatsink for high-ambient environments

Why Choose Our EPM7256SRI208-10 Solutions?

As specialists in obsolete electronic components, we offer:

1. Authentic Intel Components: Direct-sourced from certified suppliers
2. Quality Assurance: Rigorous testing for functionality and reliability
3. Technical Support: Expert guidance for design integration
4. Inventory Management: Bulk quantities available for production needs

Conclusion

The EPM7256SRI208-10 CPLD remains a powerful solution for engineers maintaining legacy systems or requiring its unique combination of features. With its high logic density, fast performance, and robust I/O capabilities, this Intel device continues to deliver value in demanding applications. For your EPM7256SRI208-10 requirements, trust our expertise in obsolete components to provide genuine parts with reliable technical support.

Contact our sales team today for pricing and availability of EPM7256SRI208-10 CPLDs, or explore our full range of programmable logic solutions.