LC4128V-5T100I

Complex Programmable Logic Devices Overview

The LC4128V-5T100I is a Complex Programmable Logic Device (CPLD) from the Lattice ispMACH 4000V family. It features 128 macrocells and 64 I/O pins within a 100-pin TQFP package. The device operates on a 3.0 V to 3.6 V supply voltage with a maximum propagation delay of 5 ns and a maximum operating frequency of 156 MHz. It supports in-system programmability and functions across an industrial temperature range of -40°C to +85°C.

Complex Programmable Logic Devices Feature Summary

• Supports in-system programmability for flexible design updates
• High-density architecture with 128 macrocells and 8 logic array blocks
• Industrial temperature range operation suitable for robust environments

Complex Programmable Logic Devices Applications

• Keyboard controller interfaces in embedded systems
• Bus bridging and protocol conversion
• Address decoding and memory interface logic
• General-purpose digital logic replacement

Complex Programmable Logic Devices Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) prior to PCB assembly. Check for end-of-life notifications or obsolescence notices, as this specific part number may be discontinued or superseded by newer revisions within the ispMACH 4000V series.

Complex Programmable Logic Devices Selection Notes

Select this CPLD when designing systems requiring moderate logic density with fast propagation delays. Ensure the application fits within the 128 macrocell limit and utilizes the available 64 I/O pins. Verify that the 3.3 V I/O levels are compatible with the target system's voltage domains. Consider thermal management requirements given the surface-mount TQFP packaging.

Complex Programmable Logic Devices Part Context

This component belongs to the Lattice ispMACH 4000V family, designed for high-performance, low-power applications. The 'V' suffix indicates the specific generation optimized for speed and power efficiency compared to earlier variants. It serves as a drop-in replacement for older GAL devices in many legacy designs while offering significantly higher complexity and reprogrammability.

Complex Programmable Logic Devices Replacement Considerations

Direct substitutes include other members of the ispMACH 4000V family with similar pin counts and macrocell densities, such as the LC4128V-5TN100I if leaded packages are required. Cross-reference with the LC4128ZC series for lower voltage options, though I/O compatibility must be verified. Always consult official Lattice documentation for functional equivalence before substitution.