ISPLSI 1048C-70LQ

Complex Programmable Logic Devices Overview

The ispLSI 1048C-70LQ is a discontinued high-density programmable logic device from Lattice Semiconductor. It features E2CMOS technology with 8000 PLD gates, 96 I/O pins, and 288 registers. The -70 speed grade supports a maximum operating frequency of 70 MHz with a typical propagation delay of 16 ns. It operates at 5V in a 128-pin PQFP package.

Complex Programmable Logic Devices Feature Summary

• High-density architecture with 48 Generic Logic Blocks (GLBs) and a Global Routing Pool.
• In-system programmability via 5V ISP interface for reconfiguration.
• TTL-compatible inputs and outputs with selectable polarity.
• Four dedicated clock input pins and two global output enables.

Complex Programmable Logic Devices Applications

• Complex glue logic integration
• Address decoding systems
• State machine implementation

Complex Programmable Logic Devices Procurement Notes

This component is officially discontinued by the manufacturer. Verification of availability requires checking secondary market distributors or surplus suppliers. Ensure compatibility with existing design constraints as original supply channels are closed.

Complex Programmable Logic Devices Selection Notes

Select this part for legacy designs requiring 5V operation and high pin counts in a PQFP package. Verify that the 70 MHz performance meets timing requirements. Consider modern FPGA alternatives if new procurement is necessary due to discontinuation status.

Complex Programmable Logic Devices Part Context

Part of the ispLSI 1000C family. The -70 suffix denotes the 70 MHz speed grade. The 'LQ' indicates a Low-power 128-pin Plastic Quad Flat Package. It succeeded earlier ispLSI variants with enhanced routing and I/O capabilities.

Complex Programmable Logic Devices Replacement Considerations

No direct public substitutes are listed. Review Lattice ispMACH 4000 or ispMACH 5000 families for functional equivalents. Cross-reference pinouts and logic density when evaluating modern replacements.

Complex Programmable Logic Devices FAQ

What is the maximum operating frequency?

The ispLSI 1048C-70LQ supports a maximum operating frequency of 70 MHz.

How many I/O pins does it have?

It provides 96 universal I/O pins and 12 dedicated input pins.

Is it in-system programmable?

Yes, it supports in-system programming using only 5V power.