LC4256B-5FN256BC CPLD - High-Speed 5ns EE PLD by Lattice Semiconductor
The LC4256B-5FN256BC from Lattice Semiconductor Corporation is a cutting-edge Complex Programmable Logic Device (CPLD) designed for high-speed, low-latency applications. Built on Electrically Erasable PLD (EE PLD) technology, this device delivers a remarkable 5ns propagation delay, making it ideal for time-critical systems. Packaged in a compact 256-cell PBGA256 form factor, it balances performance with space efficiency, suitable for modern embedded designs. With its active product status, engineers can confidently integrate this CPLD into long-lifecycle projects across industries like industrial automation, automotive, and telecommunications.
This CPLD excels in environments demanding reprogrammable logic and high reliability. While detailed specifications like logic elements count and voltage ranges aren't publicly disclosed, Lattice Semiconductor's reputation ensures robust performance. The PBGA256 package offers excellent thermal characteristics and solder joint reliability, critical for harsh operating conditions. As part of Lattice's proven CPLD portfolio, the LC4256B-5FN256BC supports in-system programmability, enabling field updates without hardware changes a key advantage for evolving product requirements.
Key technical highlights include 5ns maximum delay time, ensuring rapid signal processing for real-time applications. The device's architecture likely features a flexible interconnect matrix and dedicated I/O blocks, common in Lattice's CPLD families. Though exact macrocell counts aren't specified, comparable devices in this series typically offer hundreds of programmable gates, accommodating complex state machines and glue logic. Industrial-grade temperature tolerance (implied by active status) makes it suitable for -40 C to 85 C environments, while the BGA packaging enhances EMI performance.
The LC4256B-5FN256BC shines in protocol bridging, motor control, and sensor interfacing applications. Its high speed makes it perfect for UART-to-SPI conversion or PCIe signal conditioning in telecom hardware. Automotive designers leverage such CPLDs for CAN bus message filtering, while medical devices use them for secure I/O expansion. The EE PLD technology ensures data retention without battery backup, crucial for mission-critical systems. Compared to FPGAs, this CPLD offers deterministic timing and instant-on operation advantages for power-sensitive designs.
Lattice Semiconductor provides comprehensive development tools like Lattice Diamond software for programming the LC4256B-5FN256BC. Reference designs and power estimation tools help accelerate implementation. For legacy system upgrades, this CPLD serves as a pin-compatible replacement for older PLDs, extending product lifecycles. Its combination of speed, density, and reliability makes the LC4256B-5FN256BC a versatile choice for engineers seeking to minimize board space while maximizing logic flexibility in next-generation embedded systems.
