ISPLSI 1048E-90LQN

Complex Programmable Logic Devices Overview

The ispLSI 1048E-90LQN is a high-density programmable logic device from Lattice Semiconductor, featuring 8,000 PLD gates and 288 registers. It utilizes E2CMOS technology for non-volatile in-system programming with a maximum operating frequency of 90 MHz and a typical propagation delay of 10 ns. The device operates on a 5V supply (4.75V to 5.25V) and includes 96 universal I/O pins, 12 dedicated inputs, and four dedicated clock pins. Packaged in a 128-pin PQFP, it offers flexible pin placement and global interconnectivity.

Complex Programmable Logic Devices Feature Summary

• High-density architecture with 8,000 PLD gates and 288 registers across 48 Generic Logic Blocks.
• In-system programmability via ISP™ using only 5V power, allowing reprogramming of soldered devices.
• High-performance E2CMOS technology supporting up to 90 MHz operation with 10 ns propagation delay.
• Flexible I/O configuration with 96 universal pins, 12 dedicated inputs, and programmable slew rate control.

Complex Programmable Logic Devices Applications

• Complex glue logic replacement in digital systems.
• Address decoding and state machine implementation.
• Fast counter designs utilizing wide input gating.
• Prototyping and field-reconfigurable logic applications.

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'N' against the official datasheet ordering table, as standard listings typically use 'Q' for PQFP or 'T' for TQFP. Confirm that the component meets RoHS requirements if lead-free packaging is required for the target assembly process. Check for end-of-life status as newer designs are directed toward the ispLSI 1048EA series.

Complex Programmable Logic Devices Selection Notes

Select the -90 speed grade for designs requiring a maximum frequency of 90 MHz. Ensure the design fits within the 288 register limit and 8,000 gate capacity. Consider the -125 variant if tighter timing margins of 7.5 ns are necessary. Verify that the 128-pin PQFP package dimensions fit the PCB footprint constraints.

Complex Programmable Logic Devices Part Context

The ispLSI 1048E is part of the ispLSI 1000E family, serving as a functional superset of the earlier ispLSI 1048C architecture. It adds two global output enable pins and additional dedicated inputs. Lattice recommends using the ispLSI 1048EA for new designs, indicating this model belongs to an established generation of CPLDs.

Complex Programmable Logic Devices Replacement Considerations

The ispLSI 1048E-90LQ is functionally equivalent but may differ in packaging material or environmental compliance. For new designs, the ispLSI 1048EA series is the recommended successor. Cross-compatibility with ispLSI 1048C exists for pin-out and logic functions.