LC4032C-25T44C

Overview

The LC4032C-25T44C is a Complex Programmable Logic Device (CPLD) from Lattice Semiconductor's ispMACH 4000 family. It features 32 macrocells, 36 logic blocks, and 30 user I/O pins within a 44-pin TQFP package. The device utilizes non-volatile EEPROM technology for system-in-system programmability and supports reprogramming. Electrical specifications include a maximum propagation delay of 25 ns, an operating voltage range of 3.0 V to 3.6 V, and an industrial temperature range of 0 °C to 85 °C.

Feature Summary

• ispMACH 4000 architecture with 32 macrocells and 36 logic blocks
• EEPROM-based non-volatile configuration allowing in-system programming
• 30 user I/Os with independent output enable control
• Industrial temperature operation (0°C to 85°C)

Applications

• Protocol conversion and bridging between different bus standards
• Address decoding and memory interface logic
• General-purpose digital logic replacement for discrete components

Procurement Notes

Verify the specific suffix 'C' against official Lattice documentation to confirm the exact temperature grade and package variant. Ensure compatibility with existing design tools such as Radiant or Diamond software for programming and simulation. Confirm supply chain availability through authorized distributors as lead times may vary.

Selection Notes

Select this component when a low-density CPLD with non-volatile configuration is required. The 25 ns speed grade suits moderate-speed logic applications. Compare against the LC4032V series if lower power consumption is critical, or the LC4032Z series for extended temperature ranges. Verify pinout compatibility if replacing older GAL devices.

Part Context

This part belongs to the ispMACH 4000A family, designed to replace complex discrete logic and PAL/GAL devices. It offers high density for its class with EEPROM technology, eliminating the need for UV erasure. The TQFP-44 package provides a compact surface-mount solution suitable for space-constrained designs.

Replacement Considerations

Direct pin-compatible replacements within the same family include the LC4032V-25T44C and LC4032Z-25T44C, differing primarily in speed grade and temperature rating. Cross-family migration to newer Lattice families requires schematic and code verification due to architectural differences.