LC4256B-5FN256AC

Complex Programmable Logic Devices Overview

The LC4256B-5FN256AC is a Complex Programmable Logic Device (CPLD) from Lattice Semiconductor’s MachXO2 family. It features 256 macrocells and operates at a maximum frequency of 200 MHz with a propagation delay of 5 ns. The device includes 18 Kbits of embedded RAM and supports up to 216 I/O pins in a 256-ball FineLine BGA package. It utilizes non-volatile Flash technology for instant-on configuration, eliminating the need for external configuration memory.

Complex Programmable Logic Devices Feature Summary

• Non-volatile Flash-based architecture enabling instant power-up without external configuration devices
• High performance with 256 macrocells and 200 MHz operating speed
• Integrated 18 Kbits of embedded SRAM for data storage and processing
• Supports multiple I/O standards including LVDS, SSTL, and HSTL

Complex Programmable Logic Devices Applications

• High-density logic replacement in industrial control systems
• Board-level management and system monitoring interfaces
• Protocol conversion and interface bridging in communication equipment
• Power supply sequencing and control logic

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix codes against the manufacturer's current datasheet to ensure compatibility with required temperature ranges and voltage levels. Confirm package availability and lead times directly with authorized distributors as inventory status fluctuates. Ensure ESD handling procedures are followed during procurement and storage.

Complex Programmable Logic Devices Selection Notes

Select this component when non-volatile configuration and high pin count are required in a compact footprint. Compare the 256 macrocell density against larger MachXO2 variants if additional logic resources are needed. Verify that the 256-ball FBGA package fits within the board space constraints and thermal requirements of the design.

Complex Programmable Logic Devices Part Context

This part belongs to the MachXO2 family, which bridges the gap between traditional CPLDs and FPGAs by offering Flash-based non-volatility with FPGA-like performance. It is designed for applications requiring low power consumption, small form factors, and robust security features through bitstream encryption.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements include other MachXO2 devices with similar macrocell counts such as the LC4256M or LC4128 variants, provided pin compatibility and resource requirements match. Cross-family migration to iCE40 or LFE5 series requires significant redesign due to architectural differences.