LC4256C-75F256AC

Complex Programmable Logic Devices Overview

The LC4256C-75F256AC is a CPLD from the ispMACH 4000C family, manufactured by Lattice Semiconductor. It features 256 macrocells organized into 16 Logic Array Blocks (LABs) and supports up to 192 I/O pins. The device operates with an internal supply voltage range of 2.3V to 2.7V and offers a maximum propagation delay of 7.5ns. It is housed in a 256-pin FineLine BGA package and supports System In-Programmability (SIP).

Complex Programmable Logic Devices Feature Summary

• ispMACH 4000C architecture with 256 macrocells and 16 LABs.
• High-density I/O capability supporting up to 192 pins.
• Fast switching speed with a maximum propagation delay of 7.5ns.
• Supports System In-Programmability for flexible field updates.

Complex Programmable Logic Devices Applications

• Complex glue logic replacement in high-density designs.
• Bus bridging and protocol conversion interfaces.
• Address decoding and control logic generation.

Complex Programmable Logic Devices Part Context

This component belongs to the ispMACH 4000C series, which succeeded the 4000B line. It provides enhanced performance and density compared to earlier generations while maintaining compatibility with existing design tools and methodologies used for Lattice CPLDs.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-to-pin replacements within the same package are limited due to specific I/O configurations. Designers should evaluate the LC4256B-75F256AC or LC4256ZE-75F256AC for potential functional equivalents, verifying that voltage levels and I/O counts match the original requirements.