LC4256B-3FTN256AC

Complex Programmable Logic Devices Overview

The LC4256B-3FTN256AC is a high-density Complex Programmable Logic Device (CPLD) from the Lattice MachXO family. It features 256 macrocells and operates with a maximum propagation delay of 3 ns. The device supports In-System Programming (ISP) and utilizes a non-volatile configuration memory, eliminating the need for external boot PROMs. It integrates up to 160 I/O pins within a 256-pin FineLine BGA package, providing flexible I/O voltage support for 3.3V, 2.5V, and 1.8V standards.

Complex Programmable Logic Devices Feature Summary

• Non-volatile architecture with instant-on capability via embedded Flash memory
• High performance with 3 ns maximum propagation delay
• Supports In-System Programming (ISP) for field updates
• Flexible I/O banks compatible with 3.3V, 2.5V, and 1.8V logic levels

Complex Programmable Logic Devices Applications

• High-speed interface bridging between processors and peripherals
• Address/data bus buffering and protocol conversion
• Complex glue logic replacement in industrial control systems
• Power management controller logic implementation

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'FTN' against official Lattice documentation to confirm temperature grade and packaging details. Ensure compatibility with design tools such as Lattice Diamond or ispLEVER Classic for programming. Confirm RoHS compliance status through the manufacturer's current datasheet revision.

Complex Programmable Logic Devices Selection Notes

Select this component when non-volatile storage and low power consumption are required without external configuration devices. Compare macrocell count against LC4000VE series if higher density is needed. Verify that the 256-pin FBGA footprint matches the PCB layout constraints and thermal requirements of the target application.

Complex Programmable Logic Devices Part Context

This part belongs to the Lattice MachXO family, which bridges the gap between traditional CPLDs and FPGAs by offering non-volatile configuration. It serves as a drop-in replacement for older GAL and PAL devices while providing significantly higher logic density and programmability for modern digital designs.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-compatible replacements may include other variants within the LC4000/MachXO family with similar macrocell counts. Verify electrical specifications and package dimensions before substituting with parts from other manufacturers.