ISPLSI 1024-90LJ

Complex Programmable Logic Devices Overview

The ispLSI 1024-90LJ is a discontinued high-density programmable logic device from Lattice Semiconductor. It features E2CMOS technology with 4000 PLD gates, 144 registers, and 48 universal I/O pins alongside six dedicated inputs. The -90 speed grade supports a maximum operating frequency of 90 MHz with a propagation delay of 12 ns. Designed for 5V operation, it offers in-system programmability via ISP. The component is housed in a 68-pin PLCC package.

Complex Programmable Logic Devices Feature Summary

• High-density architecture with 4000 PLD gates and 144 registers
• E2CMOS non-volatile technology enabling in-system reprogramming
• Maximum operating frequency of 90 MHz with 12 ns propagation delay
• Four dedicated clock input pins and flexible pin placement

Complex Programmable Logic Devices Applications

• Complex glue logic replacement
• State machine implementation
• Address decoding circuits
• Fast counter designs

Complex Programmable Logic Devices Procurement Notes

Product Change Notification (PCN) #09-10 confirms that all devices in the ispLSI 1024 datasheet are discontinued. Verification of current availability requires consulting authorized distributors or secondary market suppliers such as Rochester Electronics or Arrow Electronics, as standard ordering channels no longer support this part number.

Complex Programmable Logic Devices Selection Notes

Select the -90 speed grade only if a 90 MHz maximum frequency and 12 ns propagation delay are required. Ensure the design utilizes a 5V supply voltage, as the device is not compatible with lower voltage levels. Verify that the 68-pin PLCC package footprint matches the target PCB layout constraints.

Complex Programmable Logic Devices Part Context

The ispLSI 1024 series belongs to the legacy High-Density PLD family. It combines the ease of use of PLDs with the density of FPGAs using Generic Logic Blocks (GLBs). The device integrates a Global Routing Pool for complete interconnectivity between logic blocks and I/O cells.

Complex Programmable Logic Devices Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should evaluate advanced工艺 devices recommended by Lattice Semiconductor for new designs, as the ispLSI 1024 series has been superseded.

Complex Programmable Logic Devices FAQ

What is the maximum operating frequency for the ispLSI 1024-90LJ?

The maximum operating frequency is 90 MHz.

How many Universal I/O pins does the ispLSI 1024 contain?

The device contains 48 Universal I/O pins and six dedicated input pins.

Is the ispLSI 1024-90LJ currently in production?

No, the device is discontinued according to Product Change Notification (PCN) #09-10.