ISPLSI 1048E-125LQ

Complex Programmable Logic Devices Overview

The ispLSI 1048E-125LQ is a high-density, in-system programmable logic device from the Lattice ispLSI 1000E family. It features E2CMOS technology with 8,000 PLD gates and 288 registers. The device operates at a maximum frequency of 125 MHz with a propagation delay of 7.5 ns. It includes 96 universal I/O pins, 12 dedicated inputs, four dedicated clock pins, and two global output enable pins. Powered by a single 5V supply (4.75V to 5.25V), it offers non-volatile reprogrammability and TTL-compatible signal levels.

Complex Programmable Logic Devices Feature Summary

• High-density architecture with 48 Generic Logic Blocks (GLBs) and a Global Routing Pool for complete interconnectivity.
• In-System Programmability (ISP) allowing reprogramming of soldered devices using a single 5V supply.
• Programmable output slew rate control to minimize switching noise on I/O lines.
• Functionally and pin-out compatible with the legacy ispLSI 1048C series.

Complex Programmable Logic Devices Applications

• Complex glue logic replacement in digital systems.
• Address decoding and state machine implementation.
• High-speed counter applications utilizing wide input gating.
• Prototyping and design verification via in-system reprogramming.

Complex Programmable Logic Devices Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity upon receipt, as the 128-pin PQFP/TQFP form factor requires careful handling. Ensure design files are compatible with current Lattice programming tools, noting that newer designs may require migration to the ispLSI 1048EA variant.

Complex Programmable Logic Devices Selection Notes

Select the -125 speed grade for designs requiring a 125 MHz maximum operating frequency and 7.5 ns propagation delay. Verify power consumption estimates using the provided ICC equation, as actual current draw depends on product term usage and clock frequency. Consider thermal management requirements for the 128-pin package if operating near maximum junction temperatures.

Complex Programmable Logic Devices Part Context

This component belongs to the ispLSI 1000E series, which enhances the original ispLSI 1048 architecture by adding global output enable pins and additional dedicated inputs. It serves as a bridge between traditional PLDs and FPGAs, offering the ease of use of PLDs with higher density. Lattice recommends using the ispLSI 1048EA for new designs.

Complex Programmable Logic Devices Replacement Considerations

The ispLSI 1048E-125LQ is functionally and pin-out compatible with the ispLSI 1048C-125. For new designs, the ispLSI 1048EA series is recommended as a functional superset. No other direct cross-model substitutes are documented in the provided datasheet.

Complex Programmable Logic Devices FAQ

What is the difference between the ispLSI 1048E and the ispLSI 1048C?

The ispLSI 1048E is a functional superset of the 1048C, adding two new global output enable pins and two additional dedicated inputs while maintaining pin-out compatibility.

How many Generic Logic Blocks (GLBs) does the device contain?

The ispLSI 1048E contains a total of 48 Generic Logic Blocks (GLBs).

Can the output slew rate be adjusted?

Yes, each output can be programmed independently for fast or slow output slew rate to minimize overall output switching noise.