LC4256B-5FTN256AI

Complex Programmable Logic Devices Overview

The LC4256B-5FTN256AI is a Complex Programmable Logic Device (CPLD) from the Lattice MachXO2 family. It features 256 macrocells and operates with a maximum propagation delay of 5 ns. The device supports System In-Programmability (SIP) via JTAG and includes non-volatile configuration memory. It utilizes a 256-pin FineLine BGA package with a 0.8 mm pitch, suitable for high-density applications requiring low power consumption and robust logic capabilities.

Complex Programmable Logic Devices Feature Summary

• 256 Macrocells with 16 I/Os per bank
• 5 ns maximum propagation delay
• System In-Programmable (SIP) capability
• Non-volatile Flash technology

Complex Programmable Logic Devices Applications

• High-speed interface bridging
• Address/data buffering
• Protocol conversion
• Logic replacement for legacy PLDs

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'A' against official Lattice documentation to confirm if it denotes an automotive grade or specific temperature range extension, as standard MachXO2 parts typically use 'I' for industrial and 'E' for extended temperatures. Confirm package availability and lead times through authorized distributors.

Complex Programmable Logic Devices Selection Notes

Select this component when 256 macrocells are sufficient for the design logic requirements. The 5 ns speed grade is appropriate for moderate-frequency synchronous designs. Ensure the 256-pin FBGA footprint fits the PCB layout constraints compared to smaller packages in the same family.

Complex Programmable Logic Devices Part Context

This part belongs to the MachXO2 CPLD family, which combines the ease of use of traditional PLDs with the flexibility of FPGAs. It uses Lattice's non-volatile Flash process, eliminating the need for external configuration memory and reducing system cost and board space.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements include other LC4256B variants with different speed grades (e.g., -75) or package types. Cross-family migration to MachXO3 or iCE40 devices requires significant design re-verification due to architectural differences.