A1240A-1PQ144I

Field Programmable Gate Array Overview

The A1240A-1PQ144I is a Field Programmable Gate Array (FPGA) from the Microsemi ACT 2 family, manufactured using CMOS technology. It features 1232 Configurable Logic Blocks (CLBs) and approximately 8000 logic gates, providing performance equivalent to 20,000 PLD gates. The device operates at a maximum frequency of 75 MHz and supports up to 140 user I/Os. It functions within a supply voltage range of 4.5 V to 5.5 V, with a nominal rating of 5 V. The component is housed in a 144-pin Plastic Quad Flat Package (PQFP). It is rated for military temperature grades, supporting an operating range from -55°C to 125°C.

Field Programmable Gate Array Feature Summary

• Utilizes antifuse technology for non-volatile configuration, eliminating the need for external configuration memory.
• Provides high-density programmable logic with 1232 CLBs suitable for complex digital system integration.
• Supports wide-input combinatorial functions and single-module sequence operations for flexible design implementation.

Field Programmable Gate Array Applications

• Military aerospace systems requiring radiation tolerance and wide temperature operation.
• High-speed data processing interfaces utilizing fast wide-decode circuitry.
• Replacement for legacy TTL and PAL logic in industrial control applications.

Field Programmable Gate Array Procurement Notes

Verify the specific suffix 'I' indicates the military temperature grade (-55°C to 125°C) as per official datasheets. Confirm package authenticity for the 144-pin PQFP form factor. Check for End-of-Life (EOL) status or life-buy availability, as older ACT 2 devices may have limited production runs. Ensure lead times align with project schedules due to potential manufacturing constraints on legacy CMOS processes.

Field Programmable Gate Array Selection Notes

Select this model when a high-performance FPGA with immediate configuration via antifuse is required. Compare against the A1240A-VQ176B if a CPGA176 package is preferred for similar gate counts. Consider the A1240XL series if higher clock speeds (up to 160 MHz) are needed, noting the architectural differences between ACT 2 and Integrator families. Verify I/O count requirements, as this device supports up to 140 user I/Os in the PQFP package.

Field Programmable Gate Array Part Context

This component belongs to the Microsemi ACT 2 family, which was designed to replace large numbers of discrete TTL and PAL components. The ACT 2 series utilizes proprietary antifuse technology, offering high reliability and security compared to volatile SRAM-based FPGAs. The A1240A variant represents a mid-range density option within this family, balancing logic capacity with pin count for versatile embedded applications.

Field Programmable Gate Array Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Legacy replacements may require evaluation of the A1240XL series or RT1280A, though these differ in architecture and performance characteristics. Consult Microchip (Microsemi successor) documentation for current lifecycle management options.