ISPLSI1048E-50LQ

Overview

The ISPLSI1048E-50LQ is a Complex Programmable Logic Device (CPLD) from the ispLSI 1000E series manufactured by Lattice Semiconductor. It features 192 macrocells and supports up to 96 I/O pins within a 128-pin PQFP package. The device operates at a maximum frequency of 50 MHz with a typical propagation delay of 7.5 ns. It utilizes E² CMOS technology, offering non-volatile configuration and in-system programmability via JTAG. The operating voltage range is 4.75V to 5.25V, suitable for standard 5V logic applications.

Feature Summary

• 192 Macrocells with 96 I/Os in a 128-pin PQFP package
• Maximum operating frequency of 50 MHz
• Non-volatile E² CMOS technology for instant-on operation
• In-system programmability via IEEE 1149.1 JTAG interface

Applications

• Address decoding and bus bridging in embedded systems
• State machine implementation for industrial control
• Glue logic replacement in legacy 5V designs
• Protocol conversion between different logic families

Part Context

This component belongs to the ispLSI 1000E family, which succeeded the original ispLSI 1000 series. The 'E' suffix denotes enhanced performance characteristics compared to earlier variants. The '50' indicates the speed grade (50 MHz max), while 'LQ' specifies the leaded PQFP package type. This family was widely used before transitioning to newer FPGA architectures.

Replacement Considerations

Direct pin-to-pin replacements within the same package may include other speed grades from the 1000E series such as ISPLSI1048E-70LQ or ISPLSI1048E-125LQ, provided timing requirements are met. Cross-family migration to ispMACH 4000 or iCE40 devices requires schematic redesign due to architectural differences.