LC4128V-75TN128I

Complex Programmable Logic Devices Overview

The LC4128V-75TN128I is a Complex Programmable Logic Device (CPLD) from the ispMACH 4000V family, manufactured by Lattice Semiconductor. It features 128 macrocells and supports up to 92 I/O lines within a 128-pin TQFP package. The device operates with supply voltages of 3.3 V, 2.5 V, or 1.8 V and offers a maximum operating frequency of 333 MHz with a typical propagation delay of 7.5 ns. It includes eight Logic Array Blocks (LABs) and supports in-system programming via JTAG.

Complex Programmable Logic Devices Feature Summary

• In-system programmability using standard JTAG interfaces for flexible design updates
• SuperFAST architecture delivering high-speed performance with low propagation delays
• Multi-voltage compatibility supporting 3.3 V, 2.5 V, and 1.8 V logic levels
• High-density logic structure with 128 macrocells distributed across eight LABs

Complex Programmable Logic Devices Applications

• High-speed interface bridging between different voltage domains
• Complex glue logic replacement in industrial control systems
• Address decoding and bus arbitration in embedded computing platforms
• State machine implementation for communication protocol controllers

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature range (-40°C to +105°C junction temperature). Confirm the package type corresponds to the 128-lead Thin Quad Flatpack (TQFP) variant. Ensure compatibility with existing JTAG programming infrastructure for in-system configuration. Check for RoHS compliance status as per current manufacturing revisions.

Complex Programmable Logic Devices Selection Notes

Select this component when designs require moderate logic density with high-speed performance capabilities. The 128 macrocell count suits applications needing complex combinational and sequential logic without the overhead of FPGA resources. Consider the available I/O pins for system connectivity requirements. Evaluate power consumption profiles against other CPLD families if battery operation is critical.

Complex Programmable Logic Devices Part Context

This part belongs to the ispMACH 4000V family, which provides non-volatile, in-system programmable PLDs. The family emphasizes high performance and flexibility for designers transitioning from discrete logic or older PAL/GAL devices. The V-series specifically targets applications requiring robust performance across various voltage environments.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements include other members of the LC4128 family such as LC4128V-75TN144I for increased I/O capacity, or LC4128ZC variants for extended temperature ranges. Cross-family migration to LC4256 series may be considered for higher density needs, though pinout and resource differences must be evaluated.