LC4128C-5T100C

Complex Programmable Logic Devices Overview

The LC4128C-5T100C is a Complex Programmable Logic Device (CPLD) from the Lattice ispMACH 4000Z family. It features 128 macrocells and operates with an internal core voltage of 1.7V to 1.9V. The device supports System In-Programmability (SIP) for flexible design updates. Key electrical parameters include a maximum propagation delay of 5 ns and a maximum operating frequency of 260 MHz. It is housed in a 100-pin Thin Quad Flat Package (TQFP) with dimensions of 14x14 mm, suitable for surface-mount applications.

Complex Programmable Logic Devices Feature Summary

• 128 Macrocells with flexible logic blocks supporting complex state machines and counters
• System In-Programmability (SIP) allowing non-volatile configuration updates without removal
• High performance with 5 ns max propagation delay and 260 MHz max frequency
• Low power consumption with 1.8V core voltage and standby current as low as 10 µA

Complex Programmable Logic Devices Applications

• Address decoding and bus bridging in embedded systems
• State machine implementation for industrial control logic
• Protocol conversion between different communication standards
• Glue logic replacement in high-density PCB designs

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'C' against official Lattice documentation to confirm it denotes the commercial temperature range (-40°C to +85°C). Ensure the package type matches the 100-TQFP specification. Cross-reference the part number with the manufacturer's current lifecycle status to confirm availability and obsolescence warnings before procurement.

Complex Programmable Logic Devices Selection Notes

Select this component when 128 macrocells are sufficient for the logic density requirements. The 5 ns speed grade is appropriate for moderate-speed synchronous designs. Verify that the 1.8V core voltage aligns with the system's power budget. Consider the 100-pin TQFP package constraints regarding board space and thermal dissipation compared to BGA alternatives.

Complex Programmable Logic Devices Part Context

This part belongs to the Lattice ispMACH 4000Z family, which succeeded the earlier ispMACH 4000V series. The 'Z' designation indicates support for lower voltage operation (1.8V core) compared to the 3.3V core variants. It serves as a drop-in replacement for older CPLDs in designs requiring lower power consumption while maintaining similar pin counts and logic capacity.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements within the same family include other LC4128 variants with different speed grades or packages, such as LC4128C-5TN100E. For higher density needs, consider the LC4256 series. Ensure any substitute maintains the 100-pin TQFP footprint if board layout changes are not permitted.