ISPLSI-3448-90LB432

Overview

The ISPLSI-3448-90LB432 is a high-density Complex Programmable Logic Device (CPLD) from Lattice Semiconductor's ispLSI 3000 series. It features 20,000 usable gates and supports up to 224 I/O pins within a 432-ball LBGA package. The device operates at a maximum speed of 12 ns with a 90 MHz frequency rating. It utilizes in-system programmability via the IEEE 1149.1 JTAG interface. The component functions as an Electrically Erasable PLD, offering non-volatile configuration storage without requiring external PROMs.

Feature Summary

• Supports in-system programming through standard JTAG interfaces for flexible design updates
• Provides high-density logic capacity suitable for complex system integration tasks
• Features non-volatile memory architecture eliminating the need for external configuration devices

Applications

• High-speed data communication interface implementations
• Complex bus bridging and protocol conversion systems
• System-level control logic for embedded applications

Procurement Notes

Verify the specific suffix 'LB432' confirms the 432-ball LBGA package variant during procurement. Confirm the '-90' speed grade matches the required 12 ns timing constraints for your design. Ensure the component status remains active if long-term supply continuity is required. Check RoHS compliance documentation for environmental regulations relevant to your manufacturing region. Validate that the JTAG interface requirements align with your programming hardware capabilities.

Selection Notes

Select this component when designs require high pin counts exceeding 200 I/Os with moderate logic density. The ispLSI 3000 architecture is appropriate for applications needing in-system reprogrammability without external configuration memory. Consider the LBGA package size constraints against available PCB real estate. Evaluate the 12 ns propagation delay against system clock requirements. Compare gate utilization against alternative CPLD families for optimal cost-performance balance.

Part Context

This part belongs to the ispLSI 3000 family, representing a generation of high-density PLDs designed for complex logic replacement. The series emphasizes in-system programmability and robust performance for industrial and commercial applications. It serves as a bridge between low-density GALs and larger FPGA solutions, offering deterministic timing characteristics.

Replacement Considerations

The ISPLSI-3448-70LB432 offers identical pinout and functionality with a faster 70 MHz speed grade. Verify pin compatibility before substitution. No direct cross-family replacements are officially documented in public sources.