LC4256V-5FTN256BC

Complex Programmable Logic Devices Overview

The Lattice LC4256V-5FTN256BC is a high-performance Complex Programmable Logic Device (CPLD) from the MachXO/LCMXO legacy family, designed for low-power applications. It features 256 macrocells and supports up to 180 I/O pins with flexible voltage levels including 3.3V, 2.5V, and 1.8V. The device operates at a maximum system clock frequency of 250 MHz and includes 16 Kbits of embedded SRAM. Packaged in a 256-pin FineLine BGA, it offers robust signal integrity and timing flexibility for bridging and control logic tasks.

Complex Programmable Logic Devices Feature Summary

• High-density CPLD architecture with 256 macrocells for complex logic implementation
• Flexible I/O support across multiple voltage standards (3.3V, 2.5V, 1.8V)
• Embedded 16 Kbit SRAM for data storage and configuration
• FineLine BGA packaging optimized for space-constrained designs

Complex Programmable Logic Devices Applications

• System control and management in industrial automation equipment
• Interface bridging between different protocol domains in communication infrastructure
• Address decoding and bus buffering in computing systems
• Peripheral interface control in automotive electronic modules

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix codes against official Lattice documentation to confirm temperature range, package type, and lead-free status. Ensure compatibility with existing design tools such as Lattice Diamond or ispLEVER Classic. Confirm that the 256-pin FBGA footprint matches the target PCB layout constraints. Check for end-of-life notifications or recommended replacement parts if sourcing for long-term production.

Complex Programmable Logic Devices Selection Notes

Select this component when a moderate number of macrocells and high I/O count are required in a compact form factor. Compare against the MachXO series for newer features like non-volatile configuration or higher performance if the legacy CPLD architecture suffices. Evaluate power consumption requirements against the static and dynamic characteristics specified in the datasheet. Consider the availability of development tools and IP cores compatible with this device family.

Complex Programmable Logic Devices Part Context

This part belongs to Lattice's established CPLD portfolio, which has been widely adopted for its reliability and ease of use in control applications. While newer FPGA families offer greater programmability, this CPLD provides deterministic timing and instant-on functionality without external configuration memory. It serves as a cost-effective solution for logic integration where FPGA complexity is unnecessary.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements may include other Lattice CPLDs with similar macrocell counts and pin configurations, such as the LCMXO2 series. Verify electrical compatibility and pinout correspondence before substitution. For upgraded features, consider migrating to the MachXO3 or MachXO5 families, ensuring software toolchain migration paths are available.