LC4256V-3FN256AC

Complex Programmable Logic Devices Overview

The LC4256V-3FN256AC is a high-density, in-system programmable complex programmable logic device (CPLD) from Lattice Semiconductor's ispMACH 4000V family. It features SuperFAST architecture with a maximum operating frequency of 333 MHz and a propagation delay of 3 ns. The device supports multiple supply voltages including 3.3 V, 2.5 V, and 1.8 V, utilizing non-volatile CMOS technology for instant-on functionality. Packaged in a 256-ball FineLine BGA, it provides extensive I/O capabilities suitable for high-performance digital control applications requiring low power consumption and robust signal integrity.

Complex Programmable Logic Devices Feature Summary

• SuperFAST architecture delivering 333 MHz max frequency and 3 ns propagation delay
• Non-volatile CMOS technology enabling instant-on operation without external configuration memory
• Multi-voltage support for 3.3 V, 2.5 V, and 1.8 V core supplies
• In-system programmability via IEEE 1532 standard

Complex Programmable Logic Devices Applications

• High-speed interface bridging between processors and peripherals
• Complex state machine implementation in industrial automation
• Signal routing and protocol conversion in communication equipment
• Boot configuration management for FPGA systems

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'AC' against the manufacturer's current datasheet to confirm temperature grade and package variant. Ensure design compatibility with the 256-ball FineLine BGA footprint and pitch specifications during PCB layout. Confirm that the programming toolchain supports the IEEE 1532 bitstream format required for this device family.

Complex Programmable Logic Devices Selection Notes

Select this component when high speed (333 MHz) and non-volatile retention are critical requirements. Compare against the LC4256ZE series if lower power consumption is prioritized over maximum switching speed. Ensure the available I/O count and LAB resources meet the logic density needs of the target application before finalizing the part number.

Complex Programmable Logic Devices Part Context

This device belongs to the ispMACH 4000V family, which succeeded the earlier ispMACH 4000 series. It offers improved performance and lower power compared to previous generations while maintaining pin-to-pin compatibility with select legacy devices. The family is designed for applications requiring reliable, high-density programmable logic with fast time-to-market.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-compatible replacements within the same package may include other variants from the LC4256V family with different speed grades or voltage options. Cross-family migration to the LC4256ZE series requires schematic and layout modifications due to architectural differences.