LC4256C-5FT256BC

Complex Programmable Logic Devices Overview

The LC4256C-5FT256BC is a Complex Programmable Logic Device (CPLD) belonging to the Lattice ispMACH 4000C family. It features 16 macrocells and 256 usable macrocells for logic implementation, housed in a 256-pin FineLine BGA package. The device supports system-in-programmability (ISP) via JTAG and operates within a supply voltage range of 3.0V to 3.6V. Key electrical specifications include a maximum propagation delay of 5 ns and an operating temperature range from 0°C to 85°C.

Complex Programmable Logic Devices Feature Summary

• ispMACH 4000C architecture with 256 macrocells
• System-in-programmability (ISP) capability
• 256-pin FineLine BGA package
• 5 ns maximum propagation delay

Complex Programmable Logic Devices Applications

• High-density logic replacement
• Address decoding and bus interfacing
• State machine implementations
• Protocol conversion

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'C' against official Lattice documentation to confirm it denotes the commercial temperature grade variant rather than a different speed or package option. Ensure the ordering part number matches the exact pinout and density requirements for the target design.

Complex Programmable Logic Devices Selection Notes

Select this component when a CPLD solution with ISP support and moderate I/O count is required. Compare the 5 ns speed grade against system timing constraints. Verify that the 256-pin BGA footprint is compatible with the PCB manufacturing capabilities and assembly processes available.

Complex Programmable Logic Devices Part Context

This part is part of the ispMACH 4000C series, designed as a successor to earlier ispMACH devices with improved performance and lower power consumption. It serves as a drop-in replacement for many GALs and PALs while offering significantly higher logic density and reprogrammability.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements may include other parts within the LC4256 family with different suffixes indicating varied speed grades or packages. Cross-referencing with the LC4256V series is possible but requires verification of pin compatibility and electrical parameter differences.