LC4128V-5TN128I

Complex Programmable Logic Devices Overview

The LC4128V-5TN128I 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 TQFP-128 package. The device operates at a maximum frequency of 156 MHz with a propagation delay of 5 ns. It functions on a supply voltage range of 3.0 V to 3.6 V, drawing approximately 12 mA during operation. The component is rated for industrial temperatures between -40°C and +105°C.

Complex Programmable Logic Devices Feature Summary

• Supports in-system programming via JTAG interface
• Features programmable clock polarity control on global clock pins
• Provides high-density logic with 128 macrocells across 8 LABs

Complex Programmable Logic Devices Applications

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

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature grade (-40°C to +105°C). Confirm the package type matches the required TQFP-128 footprint. Check RoHS compliance status as indicated in official documentation. Ensure design-in tools support the ispMACH 4000V family architecture.

Complex Programmable Logic Devices Selection Notes

Select this model when 128 macrocells are sufficient for the design logic requirements. Choose the TN128 package for surface-mount applications requiring 92 accessible I/Os. Opt for the -5 speed grade if a 5 ns propagation delay meets timing constraints. Consider the -75 variant if higher performance up to 333 MHz is necessary.

Complex Programmable Logic Devices Part Context

This component belongs to the Lattice ispMACH 4000V series, designed for 3.3 V applications. It serves as a high-performance, low-power CPLD solution for replacing discrete logic or small-scale ASICs. The family emphasizes flexibility through in-system programmability and robust manufacturing processes suitable for industrial environments.

Complex Programmable Logic Devices Replacement Considerations

Direct functional substitutes within the same density include other variants from the LC4128V series with different speed grades or pin counts. Cross-family replacements may require verification of pin compatibility and logic capacity against newer Lattice CPLD generations.