LC4512B-35F256C

Complex Programmable Logic Devices Overview

The LC4512B-35F256C is a high-density, in-system programmable complex programmable logic device (CPLD) belonging to the ispMACH 4000B family. It integrates 512 macrocells and supports up to 128 I/Os within a 256-pin FineLine BGA package. The device operates with a core voltage of 1.8V for low dynamic power consumption while maintaining 5V-tolerant I/Os compatible with LVCMOS 3.3, LVCMOS 2.5, LVCMOS 1.8, and LVTTI standards. It features a maximum propagation delay of 3.5 ns and supports system frequencies up to 322 MHz.

Complex Programmable Logic Devices Feature Summary

• Integrates 512 macrocells with global and output routing resources for predictable timing and pin-to-pin performance.
• Supports JTAG in-system programming (ISP) for flexible design updates without removing the device from the circuit.
• Features 5V-tolerant I/Os allowing direct interfacing with legacy systems while operating at a low 1.8V core voltage.
• Provides comprehensive clock management including global clock networks with reset, preset, and enable control.

Complex Programmable Logic Devices Applications

• High-speed interface bridging between different protocol domains.
• Complex glue logic replacement in industrial control systems.
• Address decoding and bus arbitration in embedded computing architectures.
• State machine implementation for automated test equipment.

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'C' against the manufacturer's current product selector guide to confirm the commercial temperature range and package variant. Ensure that the design environment supports the ispMACH 4000B architecture and that the required I/O standards are compatible with the 1.8V core voltage operation.

Complex Programmable Logic Devices Selection Notes

Select this component when designs require high I/O density (up to 128 pins) combined with deterministic timing characteristics provided by the global routing structure. Compare against the LC4512V or LC4512Z variants if lower core voltages (2.5V or 1.8V only) or automotive temperature ratings are required instead of the standard commercial grade.

Complex Programmable Logic Devices Part Context

This part belongs to the Lattice ispMACH 4000B family, which combines the architecture of the ispLSI 2000 and ispMACH 4A families. It is designed as a low-power, superfast CPLD solution suitable for applications requiring high performance and flexibility in small form factors.

Complex Programmable Logic Devices Replacement Considerations

Direct functional equivalents within the same family include the LC4512B-35TN176C (TQFP package) or LC4512B-35FT256C (FineLine TFBGA package). Cross-family replacements such as the LC4512V or LC4512Z may offer similar logic density but differ in core voltage requirements and temperature specifications.