A42MX09-1PLG84

Overview

The A42MX09-1PLG84 is a Field Programmable Gate Array (FPGA) from the Microchip MX family, housed in an 84-pin PLCC package. It features approximately 14,000 system gates and 72 I/O pins. The device operates on a single 5V supply voltage, with a specified range of 4.75V to 5.25V. It supports commercial temperature grades ranging from 0°C to +70°C. Key technical specifications include up to 2.5 kbits of configurable dual-port SRAM, fast wide-decode circuitry, and deterministic timing capabilities suitable for ASIC replacement designs.

Feature Summary

• Single-chip solution designed as a cost-effective alternative to complex ASICs
• Supports mixed-voltage operation with PCI-compliant I/O interfaces
• Enables up to 100% resource utilization and pin locking for design flexibility
• Includes unique in-system diagnostic capability via Silicon Explorer II

Applications

• High-speed controllers and address decoding
• Peripheral bus interfaces
• DSP and co-processor functions

Procurement Notes

Verify the specific suffix '1' against official Microchip documentation to confirm the exact temperature grade and speed bin, as variations exist within the A42MX09 series. Confirm current availability status, as many devices in this legacy MX family have reached end-of-life or obsolescence phases. Ensure compliance with RoHS directives if required for the target application environment.

Selection Notes

Select this component when a 5V-only FPGA architecture is required for legacy system integration. The 84-pin PLCC package is suitable for through-hole mounting or specific socketed applications. Consider the 14,000 gate count and limited embedded memory when evaluating logic density requirements compared to higher-capacity members of the MX family.

Part Context

This part belongs to the Microsemi/Microchip 40MX and 42MX FPGA families, which are established non-volatile flash-based technologies. These devices are engineered to consolidate logic previously implemented in multiple PALs, CPLDs, and FPGAs. The family emphasizes ease of integration and deterministic timing for industrial and automotive applications.

Replacement Considerations

Direct substitutes may include other variants within the A42MX09 series with different packages, such as PQFP-144 or TQFP-176, provided pin compatibility is verified. Cross-family migration to newer Microchip PolarFire or IGLOO2 series requires significant architectural redesign due to differences in non-volatile technology and I/O standards.