A42MX24-1TQ176M

Overview

The A42MX24-1TQ176M is a non-volatile Flash FPGA from the Microsemi MX family, designed as a single-chip ASIC alternative. It features 36,000 system gates and 912 Configurable Logic Blocks (CLBs). The device supports mixed-voltage operation with core and I/O voltages of 3.3V or 5.0V. It utilizes SRAM-based technology requiring an external configuration EEPROM for booting. The component is housed in a 176-pin TQFP package and includes IEEE 1149.1 JTAG boundary scan capabilities.

Feature Summary

• Non-volatile Flash architecture providing instant-on functionality without external configuration memory
• Supports mixed-voltage operation allowing 3.3V or 5.0V core and I/O configurations
• Includes up to 2.5 kbits of configurable dual-port SRAM for data storage
• Features deterministic timing with user-controllable delays and pin locking

Applications

• Automotive embedded control systems
• Industrial automation controllers
• Military avionics and communication subsystems
• Spacecraft digital logic replacement

Procurement Notes

Verify the specific suffix 'M' against official Microchip documentation to confirm temperature range and qualification status. Confirm RoHS compliance status as older MX series devices may have non-compliant variants. Check for End-of-Life notifications or Product Change Notices that may affect long-term availability.

Selection Notes

Select this model when instant-on capability is required to eliminate external configuration EEPROMs. Ensure the design fits within the 36,000 gate limit and available CLB resources. Verify that the 176-pin TQFP footprint matches the PCB layout constraints and thermal requirements for the target operating environment.

Part Context

This part belongs to the Actel/Microsemi MX family of Flash FPGAs, which bridges the gap between complex CPLDs and traditional SRAM FPGAs. The A42MX24 variant represents a mid-range capacity within the family, offering higher density than the A40MX series while maintaining low power consumption and radiation tolerance suitable for harsh environments.

Replacement Considerations

Direct replacements are limited due to the proprietary Flash architecture. Consider the A42MX24-TQ176I for industrial temperature ranges if the 'M' suffix denotes military grade. Cross-family migration to ProASIC3 or IGLOO2 requires significant redesign.