A42MX24-PL84M

Overview

The A42MX24-PL84M is a Field Programmable Gate Array (FPGA) from the Microchip MX Automotive Family. It features 36,000 system gates and 912 logic elements within a Plastic Leaded Chip Carrier (PLCC-84) package. The device supports mixed-voltage operation with a core supply of 3.3V or 5V and I/Os compatible with 5.0V standards. Operating temperatures range from -55°C to +125°C, ensuring suitability for automotive and industrial environments. It includes up to 2.5 kbits of configurable dual-port SRAM and deterministic timing control.

Feature Summary

• Single-chip ASIC alternative offering high capacity with up to 54,000 system gates across the family.
• Supports mixed-voltage operation allowing flexible integration with both 3.3V and 5.0V I/O interfaces.
• Provides deterministic, user-controllable timing for precise design implementation.
• Includes unique in-system diagnostic capability via Silicon Explorer II technology.

Applications

• Automotive applications requiring high reliability and wide temperature tolerance
• Industrial control systems needing single-chip ASIC replacement
• Military and aerospace electronics utilizing commercial, industrial, or military temperature grades

Procurement Notes

Verify component authenticity through authorized Microchip distributors or direct manufacturer channels. Confirm RoHS compliance status as it varies by specific suffix and production batch. Check for End-of-Life (EOL) notices or Last-Time-Buy notifications, as this part number may be discontinued. Ensure proper handling procedures are followed due to moisture sensitivity classification. Request detailed datasheets and test reports to validate performance against specific application requirements before final procurement decisions.

Selection Notes

Select the A42MX24-PL84M when designing for harsh environments requiring extended temperature ranges down to -55°C. Choose this model if the application demands mixed-voltage I/O compatibility without external level shifters. Consider this FPGA for projects needing deterministic timing and in-system diagnostics. Evaluate pin count requirements carefully, as the PLCC-84 package offers limited I/O compared to larger packages like PQFP or TQFP. Verify that the 36,000 gate capacity meets the logic density needs of the target design.

Part Context

This component belongs to the Actel/Microchip MX family of SRAM-based FPGAs, originally developed by Actel before its acquisition by Microchip Technology. The MX series is specifically optimized for automotive and high-reliability applications, offering radiation tolerance options and robust packaging. The A42MX24 variant represents a mid-range capacity device within this portfolio, balancing resource utilization with power consumption. It serves as a drop-in replacement for many complex discrete logic circuits and older CPLDs in demanding sectors.

Replacement Considerations

Direct pin-to-pin replacements may include other variants in the A42MX24 series with different speed grades or packages, such as A42MX24-PQ208A for higher I/O counts. Cross-reference with A42MX24-PL84A for similar functionality but potentially different environmental ratings. Always verify electrical characteristics and timing parameters against the original design specifications when substituting components.