A54SX32A-CQ84B

Overview

The A54SX32A-CQ84B is a military-grade Field Programmable Gate Array from the HiRel SX-A family, manufactured by Microchip Technology. It features 48,000 system gates and 1,800 logic modules within a hermetic CQFP-84 ceramic package. The device operates at a maximum frequency of 215 MHz with a clock-to-out delay of 5.3 ns under military temperature conditions (-55°C to +125°C). It supports mixed-voltage I/O standards including 3.3 V and 5 V PCI, LVTTL, and TTL, utilizing a 0.25/0.22 µ CMOS process technology.

Feature Summary

• Military-grade reliability with MIL-STD-883 Class B certification and QML compliance for high-reliability applications.
• Nonvolatile antifuse architecture providing deterministic timing, low power consumption, and protection against reverse engineering.
• Hot-swap compliant I/Os allowing safe insertion into active systems without power sequencing requirements.
• Integrated in-system diagnostic capabilities via Silicon Explorer II and IEEE 1149.1 (JTAG) boundary scan testing.

Applications

• Military avionics and defense electronics requiring radiation tolerance and high reliability.
• Spacecraft subsystems and satellite communication equipment.
• High-reliability industrial control systems operating in extreme environmental conditions.

Procurement Notes

Verify that the specific part number suffix corresponds to the required qualification level, such as MIL-STD-883 Class B screening or QML certification. Confirm the package type matches the design footprint, specifically the Ceramic Quad Flat Pack (CQFP) variant. Ensure compatibility with existing Actel Designer or Libero IDE development tools for programming and verification workflows.

Selection Notes

Select this component when designing for environments requiring extended temperature ranges and strict reliability standards. The nonvolatile antifuse architecture eliminates configuration bitstream vulnerabilities found in SRAM-based FPGAs. Consider the available user I/O count and mixed-voltage support when interfacing with legacy 5 V or modern 3.3 V peripherals in complex system integrations.

Part Context

This device belongs to the HiRel SX-A family, which extends the commercial SX-A line with enhanced screening and packaging options. It shares architectural similarities with other antifuse-based FPGAs but distinguishes itself through hermetic packaging and rigorous military testing protocols. The family offers a balance of performance and security suitable for critical infrastructure and aerospace deployments.

Replacement Considerations

Direct pin-compatible replacements within the same family include the A54SX72A series for higher capacity needs. For non-military applications, standard SX-A variants may serve as functional substitutes if environmental ratings are less stringent. Verify software toolchain compatibility when migrating between different speed grades or package types within the Actel/Microchip portfolio.

FAQ

What is the maximum operating frequency for the A54SX32A-CQ84B?

The device supports a system performance of up to 215 MHz with an internal clock frequency of 240 MHz under military temperature conditions.

Does the A54SX32A-CQ84B support hot-swapping?

Yes, the I/Os are hot-swap compliant, allowing the device to be inserted into an active system without causing damage or degrading reliability, provided 3.3 V PCI standards are not used for hot-swap operations.

How does the antifuse architecture affect security?

The metal-to-metal antifuse interconnect creates a permanent connection that is extremely difficult to distinguish between programmed and unprogrammed states, effectively preventing reverse engineering and design theft.