ISPLSI 1048E-50LQN

Complex Programmable Logic Devices Overview

The ispLSI 1048E-50LQN 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. Built on E²CMOS technology, it operates at a maximum frequency of 90 MHz with a propagation delay of 20 ns. The device supports 5V non-volatile programming, TTL-compatible I/O levels, and includes dedicated clock inputs and global output enable pins for flexible system integration.

Complex Programmable Logic Devices Feature Summary

• High Density: 8,000 PLD gates, 48 Generic Logic Blocks (GLBs), and 288 registers.
• In-System Programmability: Supports ISP via 5V only, allowing reprogramming of soldered devices.
• Performance: Maximum operating frequency of 90 MHz; worst-case propagation delay of 20 ns.
• Flexible I/O: 96 Universal I/O pins and 12 dedicated inputs with programmable slew rate control.

Complex Programmable Logic Devices Applications

• Glue logic replacement in industrial control systems
• Address decoding and state machine implementation
• Interface bridging between legacy TTL components and modern digital systems

Complex Programmable Logic Devices Procurement Notes

Verify the suffix 'N' against official Lattice documentation to confirm lead-free status or specific package variant details, as datasheet tables list 'LQ' and 'LT' suffixes. Ensure design migration to the recommended ispLSI 1048EA for new projects, as the 1048E is an older generation device. Confirm availability through authorized distributors given the component's age.

Complex Programmable Logic Devices Selection Notes

Select the -50 speed grade for designs requiring a 20 ns worst-case propagation delay and 90 MHz maximum frequency. The 128-pin PQFP package is suitable for through-hole mounting. For higher performance requirements, consider the -70, -100, or -125 variants. Note that the datasheet recommends using the ispLSI 1048EA for new designs instead of the 1048E.

Complex Programmable Logic Devices Part Context

The ispLSI 1048E belongs to the ispLSI family of high-density PLDs, serving as a functional superset of the earlier ispLSI 1048 architecture. It adds two global output enable pins and two dedicated inputs compared to its predecessor. The device utilizes Generic Logic Blocks (GLBs) interconnected by a Global Routing Pool (GRP) to provide complete interconnectivity.

Complex Programmable Logic Devices Replacement Considerations

For new designs, Lattice recommends using the ispLSI 1048EA. The ispLSI 1048C is pin-out compatible but lacks the enhanced features of the E version. No direct cross-model substitutes are listed in the provided documentation.