A42MX24-PL84I

Overview

The A42MX24-PL84I is a Field Programmable Gate Array (FPGA) from the Microchip A42MX family, housed in an 84-pin Plastic Leaded Chip Carrier (PLCC-84) package. It provides 36,000 system gates and 912 Logic Elements (LEs). The device operates within a supply voltage range of 4.5 V to 5.5 V, with a nominal operating voltage of 3.3 V or 5 V. It supports mixed-voltage I/O configurations compliant with PCI standards. The component is rated for an industrial temperature range of -40°C to +85°C and includes IEEE Standard 1149.1 (JTAG) boundary scan testing capabilities.

Feature Summary

• Single-chip ASIC alternative architecture supporting up to 100% resource utilization and pin fixing
• Mixed-voltage operation capability allowing core and I/Os to operate at 5.0V or 3.3V
• Deterministic, user-controllable timing with fast wide-decode circuitry
• Support for synthesis-friendly design methodologies and unique in-system diagnostic capability

Applications

• Automotive applications requiring single-chip ASIC alternatives
• Industrial control systems utilizing deterministic timing
• Military and aerospace environments compatible with industrial temperature grades
• Systems requiring mixed-voltage interface integration

Procurement Notes

Verify RoHS compliance status as documentation indicates non-compliance for this specific suffix variant. Confirm end-of-life status through official Microchip discontinuance notifications prior to procurement. Ensure packaging specifications match the PLCC-84 plastic leaded chip carrier format. Validate that the industrial temperature grade (-40°C to +85°C) meets project environmental requirements. Cross-reference the manufacturer part number against current distributor listings to confirm availability and authenticity.

Selection Notes

Select this model when 36,000 system gates and 72 I/O pins are required in an 84-pin PLCC package. Choose the 'I' suffix for industrial temperature range operations between -40°C and +85°C. Consider this device for designs needing mixed-voltage I/O support at 3.3V or 5.0V. Verify compatibility with existing JTAG boundary scan infrastructure. Evaluate if the CMOS technology and power consumption profiles align with system constraints compared to newer FPGA families.

Part Context

This component belongs to the Actel MX FPGA family, now manufactured by Microchip Technology following their acquisition of Actel. The A42MX series is designed as a high-capacity, low-power SRAM-based FPGA solution. It serves as a drop-in replacement for complex discrete logic and small ASICs. The PL84 suffix specifically denotes the 84-pin plastic quad flat package variant suitable for surface mount assembly.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Check Microchip's official product change notification (PCN) documents for potential obsolescence notices or recommended upgrades within the A42MX or successor families.