ISPLSI3256E-100LB320

Overview

The ISPLSI3256E-100LB320 is a high-density In-System Programmable Logic Device (ISPLSI) from Lattice Semiconductor. It features 256 macrocells with SuperFAST architecture, supporting maximum frequencies up to 400 MHz. The device operates at a 3.3V supply voltage and includes 5V-tolerant I/Os for compatibility with legacy systems. Packaged in a 320-ball LBGA format, it integrates JTAG-based in-system programmability compliant with IEEE 1149.1 standards, facilitating design flexibility and reduced board space requirements.

Feature Summary

• 256 Macrocells with SuperFAST performance reaching 400 MHz
• 3.3V core voltage with 5V-tolerant I/Os
• IEEE 1149.1 compliant JTAG In-System Programming
• 320-ball LBGA package

Applications

• High-speed logic control interfaces
• Bus bridging and protocol conversion
• Complex glue logic replacement
• Industrial automation control units

Procurement Notes

Verify the specific suffix codes against official Lattice documentation to confirm temperature grade and packaging variations. Ensure programming tools support the ispLSI 2000/3000 family architecture for reliable configuration.

Selection Notes

Select this component for designs requiring moderate density with high-speed performance. Compare against the ispLSI 2000VE series if lower power consumption is critical, or consider the ispMACH 4000 series for higher density needs.

Part Context

This part belongs to the ispLSI 2000/3000 family, representing a transition point in Lattice's CPLD portfolio. It combines the density of earlier ispLSI devices with improved routing resources and speed characteristics found in subsequent generations.

Replacement Considerations

Direct pin-to-pin replacements may be limited. Evaluate the ispLSI 3256A or ispLSI 2032VE as potential functional alternatives, verifying timing and I/O compatibility.