ISPLSI 1048C-50LQI

Complex Programmable Logic Devices Overview

The ispLSI 1048C-50LQI is a discontinued high-density programmable logic device from Lattice Semiconductor, manufactured under the E2CMOS non-volatile technology. It features 8000 PLD gates, 96 universal I/O pins, and 12 dedicated inputs within a 128-pin PQFP package. The device includes 288 registers, four dedicated clock input pins, and two global output enables. Key electrical specifications include a maximum operating frequency of 50 MHz for industrial grade and a typical propagation delay of 16 ns. It supports 5-Volt in-system programming and operates with a supply voltage range of 4.75 V to 5.25 V.

Complex Programmable Logic Devices Feature Summary

• High-density architecture with 48 Generic Logic Blocks (GLBs) and a Global Routing Pool for complete interconnectivity.
• Non-volatile E2CMOS technology enabling electrically erasable and reprogrammable logic without power loss.
• In-System Programmable (ISP) capability allowing 5-Volt-only programming and debugging of soldered devices.
• TTL-compatible inputs and outputs with selectable polarity and configurable I/O cell functions.

Complex Programmable Logic Devices Applications

• Complex glue logic replacement in digital systems.
• State machine implementation requiring synchronous and asynchronous clocking.
• Address decoding and fast counter applications utilizing wide input gating.
• Prototyping and design verification for field-programmable gate array architectures.

Complex Programmable Logic Devices Procurement Notes

All devices in the ispLSI 1048C family are officially discontinued as per Product Change Notification PCN#13-10. The specific part number ispLSI 1048C-50LQI is no longer in production. Verification of current availability requires checking secondary market distributors or legacy stock holders, as original manufacturer supply has ceased.

Complex Programmable Logic Devices Selection Notes

When selecting this component, note that the 'I' suffix denotes Industrial temperature grade (-40°C to +85°C), supporting a maximum frequency of 50 MHz. The 'L' indicates Low power consumption, and 'Q' specifies the 128-pin PQFP package. Ensure designs account for the discontinuation status and verify compatibility with existing 5V logic levels and ISP programming interfaces.

Complex Programmable Logic Devices Part Context

The ispLSI 1048C belongs to the ispLSI 1000S family of complex programmable logic devices. It serves as an upgrade to the earlier ispLSI 1048, offering additional dedicated inputs and global output enable pins. This device represents Lattice's early integration of non-volatile reprogrammability with high-density PLD functionality, bridging the gap between traditional PLDs and FPGAs.

Complex Programmable Logic Devices Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation due to the discontinued status. Designers should evaluate modern low-power FPGA families such as Lattice MachXO3 or CertusPro-NX for functional equivalents, ensuring pinout and logic density requirements are met.

Complex Programmable Logic Devices FAQ

What is the maximum operating frequency for the ispLSI 1048C-50LQI?

The maximum operating frequency (fmax) for the ispLSI 1048C-50LQI is 50 MHz.

How many Generic Logic Blocks (GLBs) does the ispLSI 1048C contain?

The ispLSI 1048C contains a total of 48 Generic Logic Blocks (GLBs).

Is the ispLSI 1048C-50LQI currently in production?

No, all devices in the ispLSI 1048C datasheet have been discontinued via Product Change Notification PCN#13-10.