ISPLSI2128VL-100LT100

Overview

The ISPLSI2128VL-100LT100 is a Complex Programmable Logic Device (CPLD) from the ispLSI 2128VE family, manufactured by Lattice Semiconductor. It features 128 macrocells and supports up to 28 I/O pins within a TQFP-100 surface-mount package. The device operates at a maximum frequency of 135 MHz with a typical propagation delay of 4 ns. It utilizes EEPROM technology for non-volatile configuration storage and functions on a 3.3 V supply voltage. The component is rated for industrial temperature ranges spanning from -40°C to +105°C.

Feature Summary

• High-density architecture with 128 macrocells and 6000 usable gates
• System-in-package programmability via ISP interface
• Industrial temperature range operation (-40°C to +105°C)
• Non-volatile EEPROM configuration memory

Applications

• Interface bridging between different logic families
• Address decoding and control logic in embedded systems
• State machine implementation for industrial controllers

Procurement Notes

This specific part number is marked as obsolete or end-of-life by the manufacturer. Verification of current availability requires checking authorized distributors for remaining stock or alternative lifecycle status. Designers should confirm if the 'VL' suffix denotes a specific voltage or temperature variant distinct from standard models before procurement.

Selection Notes

Select this component when a moderate density CPLD with high-speed performance (135 MHz) is required for legacy system maintenance or specific pin-count constraints. Ensure the design accommodates the 3.3 V I/O levels and verify that the TQFP-100 footprint matches the PCB layout requirements. Consider the EEPROM reprogrammability for field updates.

Part Context

The ISPLSI2128VL-100LT100 belongs to the ispLSI 2000 series, which was widely used for replacing GALs and PALs in digital designs. The '2128' designation indicates the macrocell count, while 'LT100' specifies the lead-free TQFP-100 package. This series represents Lattice's transition towards fully integrated, non-volatile CPLDs with ISP capabilities.

Replacement Considerations

Direct replacements may be limited due to the obsolete status. Potential alternatives include other Lattice ispLSI 2000 series devices with similar macrocell counts or modern low-power FPGA equivalents like the MachXO series, provided pin compatibility and logic capacity are verified.