ISPLSI 1048E-70LQI

Complex Programmable Logic Devices Overview

The ispLSI 1048E-70LQI is a high-density, in-system programmable logic device (PLD) from Lattice Semiconductor. It features 8,000 PLD gates, 288 registers, and 96 universal I/O pins within a 128-pin PQFP package. Operating at a maximum frequency of 70 MHz with a typical propagation delay of 15 ns, it utilizes E2CMOS technology for non-volatile configuration. The device includes four dedicated clock inputs, two global output enable pins, and twelve dedicated inputs, supporting TTL-compatible voltage levels.

Complex Programmable Logic Devices Feature Summary

• High-density architecture with 8,000 PLD gates and 48 Generic Logic Blocks (GLBs).
• In-system programmability via ISP interface using only 5V power supply.
• Global Routing Pool (GRP) ensures complete interconnectivity between all logic elements.
• Programmable output slew rate control to minimize switching noise.

Complex Programmable Logic Devices Applications

• Complex glue logic replacement in digital systems.
• State machine implementation requiring fast counters or address decoders.
• Prototyping reconfigurable systems due to in-system programming capability.
• Address decoding and bus interfacing applications.

Complex Programmable Logic Devices Procurement Notes

Verify the specific speed grade suffix '70' corresponds to the 70 MHz fmax requirement. Confirm the 'I' suffix indicates the industrial temperature range (-40°C to +85°C). Ensure the 'LQ' designation matches the required 128-pin PQFP package type. Check for lead-free compliance if required by assembly specifications.

Complex Programmable Logic Devices Selection Notes

Select this model when 8,000 gates and 96 I/Os are sufficient for the design. The -70 speed grade offers a balance between performance and power consumption compared to faster variants. Consider the -125 variant if propagation delays under 10 ns are critical. Verify that the 5V-only ISP programming capability aligns with the system's programming infrastructure.

Complex Programmable Logic Devices Part Context

This component belongs to the ispLSI 1000E family, which serves 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 series for new designs, indicating this part may be legacy.

Complex Programmable Logic Devices Replacement Considerations

The ispLSI 1048C is functionally and pin-out compatible but lacks the enhanced features of the E series. For new designs, the ispLSI 1048EA is the recommended successor. Direct pin-compatible replacements from other manufacturers are not explicitly documented in the source material.