ISPLSI2128-100LQ

Overview

The ISPLSI2128-100LQ is a Complex Programmable Logic Device (CPLD) belonging to the ispLSI 2000VE family, manufactured by Lattice Semiconductor. It features 128 macrocells and supports up to 32 I/O lines within a 100-pin Low-Profile Quad Flat Package (LQFP). The device operates on a single 3.3V power supply and utilizes non-volatile EEPROM technology for design storage, allowing for in-system programmability without removal from the circuit board. It offers a maximum operating frequency of 100 MHz with a typical propagation delay of 5 ns, suitable for high-speed digital logic applications across an industrial temperature range.

Feature Summary

• Supports In-System Programmability via JTAG interface for flexible field updates
• Utilizes non-volatile EEPROM memory architecture for persistent configuration retention
• Integrates high-density logic resources with low-power CMOS technology

Applications

• High-speed bus bridging and protocol conversion
• Complex glue logic replacement in embedded systems
• Address decoding and control logic generation

Procurement Notes

Verify the specific suffix codes against official Lattice documentation to confirm package type and temperature grade. Confirm end-of-life status or obsolescence notices prior to procurement planning. Ensure compatibility with existing programming hardware and software tools for the ispLSI family. Check for moisture sensitivity levels and reflow soldering requirements during assembly.

Selection Notes

Select this component when a moderate density CPLD with non-volatile configuration is required. Compare against the LC4000V series if lower voltage operation or different pin counts are needed. Consider the ispMACH 4000A series for enhanced performance metrics. Evaluate pin count requirements carefully as the 100-pin package limits available I/O resources.

Part Context

This part belongs to the legacy ispLSI 2000VE product line, representing a transition era in Lattice's programmable logic portfolio. These devices were widely adopted for their ease of use and robust EEPROM-based configuration. While largely superseded by newer architectures like MachXO and CrossLink, they remain relevant for maintaining existing designs and cost-sensitive applications requiring proven reliability.

Replacement Considerations

Direct replacements may be limited due to the age of the ispLSI 2000VE family. Consult Lattice for cross-reference guides to the ispMACH 4000A or LC4000V series. Pin-compatible alternatives might require schematic redesigns. Verify that any substitute device meets the original timing and voltage specifications.