LC4128V-5T144I

Complex Programmable Logic Devices Overview

The LC4128V-5T144I is a Complex Programmable Logic Device (CPLD) from the ispMACH 4000V family, manufactured by Lattice Semiconductor. It features 128 macrocells organized into 8 Logic Array Blocks and provides 96 I/O pins within a 144-pin TQFP package. The device supports in-system programming via EEPROM technology and operates on a single 3.3V supply voltage. Key electrical parameters include a maximum propagation delay of 5 ns, a maximum operating frequency of 333 MHz, and an internal supply voltage range of 3V to 3.6V. It is rated for industrial temperature operation from -40°C to +105°C junction temperature.

Complex Programmable Logic Devices Feature Summary

• Supports In-System Programming using non-volatile EEPROM memory technology
• Features high-density architecture with 128 macrocells and up to 80 product terms per output
• Provides flexible clocking with up to four global clock pins and programmable polarity control
• Operates on a single 3.3V power supply for simplified system design

Complex Programmable Logic Devices Applications

• Keyboard controller interfaces in embedded systems to offload real-time data processing
• Bus bridging and protocol conversion between different logic families
• Address decoding and chip select generation in complex digital systems
• State machine implementation for industrial automation control logic

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature grade (-40°C to +105°C TJ), distinct from commercial variants. Confirm the package marking and date code against current Lattice production notices, as packaging and marking formats have undergone changes. Ensure compatibility with existing JTAG programming infrastructure, as the device requires specific voltage levels for ISP operations. Cross-reference the exact part number with official Lattice distributors to confirm current availability status.

Complex Programmable Logic Devices Selection Notes

Select this component when a moderate density CPLD with high-speed performance (5 ns delay) is required for 3.3V systems. It serves as a direct replacement for older GAL or PAL devices requiring higher pin counts and reprogrammability. Consider the 144-pin TQFP footprint constraints during PCB layout. Compare against the LC4128V-75 variant if a slower 7.5 ns speed grade offers sufficient margin for cost reduction or easier timing closure.

Complex Programmable Logic Devices Part Context

This device belongs to the Lattice ispMACH 4000V family, designed for high-performance, low-power applications. The family utilizes advanced EEPROM technology to allow unlimited reprogramming cycles. The LC4128V model specifically targets applications needing significant logic density within a compact surface-mount package, offering a balance between complexity and power consumption compared to larger FPGA solutions.

Complex Programmable Logic Devices Replacement Considerations

Publicly confirmed substitutes include other members of the LC4128V series with different speed grades or temperature ratings, such as LC4128V-75TN144I. Verify that any replacement maintains the same 144-TQFP footprint and pinout compatibility. Ensure the alternative device supports the required 3.3V VCCIO levels and ISP functionality if field updates are necessary.