ISPLSI 1048C-50LQ

Complex Programmable Logic Devices Overview

The ispLSI 1048C-50LQ 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 device operates at a maximum frequency of 50 MHz with a propagation delay of 22 ns. It utilizes a 5V supply voltage and is housed in a 128-pin PQFP package. Key architectural elements include 48 Generic Logic Blocks (GLBs), a Global Routing Pool (GRP), and four dedicated clock inputs.

Complex Programmable Logic Devices Feature Summary

• High-density architecture with 8000 PLD gates and 288 registers
• In-system programmable via 5V ISP interface
• Non-volatile E2CMOS technology for reprogrammability
• TTL-compatible inputs and outputs

Complex Programmable Logic Devices Applications

• Glue logic replacement
• State machine implementation
• Address decoding
• Fast counter circuits

Complex Programmable Logic Devices Procurement Notes

This component has been officially discontinued by the manufacturer. Product Change Notifications (PCNs) confirm that all devices in this datasheet are no longer in production. Verification of current availability should focus on secondary market sources or obsolete inventory lists rather than direct manufacturer distribution channels.

Complex Programmable Logic Devices Selection Notes

Designers requiring equivalent functionality should evaluate modern Lattice CPLD families such as the ispMACH 4000 series or low-power FPGA alternatives. Selection criteria must account for differences in I/O voltage levels, pin counts, and programming interfaces compared to the legacy 5V ispLSI 1048C architecture.

Complex Programmable Logic Devices Part Context

The ispLSI 1048C belongs to the ispLSI 1000C family of complex programmable logic devices. It was designed to combine the ease of use of PLDs with the density of FPGAs. The -50LQ suffix indicates the commercial temperature grade, 50 MHz speed bin, Low power variant, and PQFP package type.

Complex Programmable Logic Devices Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Lattice's official migration guides for transitioning from the ispLSI 1000C family to current product lines.