LC4128C-75TN128C

Complex Programmable Logic Devices Overview

The LC4128C-75TN128C is a Complex Programmable Logic Device (CPLD) from Lattice Semiconductor's ispMACH 4000C family. It features 128 macrocells and 92 I/O lines housed in a 128-pin TQFP package. The device supports system-in-programmability via EEPROM technology and includes JTAG boundary scan capabilities. Key electrical parameters include a maximum operating frequency of 111 MHz, a propagation delay of 7.5 ns, and an operating supply voltage range of 2.3 V to 2.7 V. It contains 8 Logic Array Blocks (LABs) with up to 80 product terms per macrocell.

Complex Programmable Logic Devices Feature Summary

• 128 Macrocells with 8 Logic Array Blocks (LABs)
• 92 I/O pins with individual local output enable control
• System-in-programmable EEPROM non-volatile configuration memory
• JTAG boundary scan support for testing and programming

Complex Programmable Logic Devices Applications

• High-density logic replacement in industrial control systems
• Protocol bridging and bus interface conversion
• Address decoding and chip select generation
• State machine implementation for embedded controllers

Complex Programmable Logic Devices Procurement Notes

Verify RoHS compliance status as datasheet records indicate lead-free variants exist alongside leaded versions. Confirm the specific suffix 'C' denotes commercial temperature range and 'TN128' specifies the TQFP-128 package. Ensure design files account for the 2.5V nominal supply voltage requirements and humidity sensitivity level 3 handling procedures during assembly.

Complex Programmable Logic Devices Selection Notes

Select this component when 128 macrocells are sufficient for the logic density requirement. The 7.5 ns speed grade offers a balance between performance and power consumption compared to faster variants. Verify that the 128-pin TQFP footprint fits the PCB layout constraints. Consider the LC4128B or LC4128Z series if higher speeds or different voltage domains are required.

Complex Programmable Logic Devices Part Context

This part belongs to the ispMACH 4000C family, designed for high-performance, low-power CPLD applications. It complements the broader LC4000 series by offering a specific combination of density and speed optimized for commercial temperature ranges. The device utilizes Lattice's SuperFast architecture to minimize propagation delays while maintaining low static current consumption.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-compatible replacements within the same package include other speed grades of the LC4128C series. Cross-family migration to LC4128B may require voltage level adjustments. Verify that any substitute maintains the 128-pin TQFP outline dimensions and EEPROM programming interface compatibility.