A54SX32-CQ256M

Overview

The A54SX32-CQ256M is a high-reliability Field Programmable Gate Array from the HiRel SX-A family, manufactured by Microsemi Corporation. It features 48,000 system gates and 2,880 logic modules within a 256-pin Ceramic Quad Flat Pack (CQFP) package. The device supports mixed-voltage operation at 2.5 V, 3.3 V, and 5 V with 5 V input tolerance. It achieves an internal performance of 240 MHz and a system performance of 215 MHz under military temperature conditions (-55°C to +125°C). The architecture utilizes metal-to-metal antifuse technology for nonvolatile configuration.

Feature Summary

• Military-grade reliability with QML certification and MIL-STD-883 Class B compliance
• Nonvolatile antifuse architecture providing deterministic timing and design security
• Hot-swap compliant I/Os supporting cold-sparing applications without voltage sequencing
• Integrated in-system diagnostic and verification capability via Silicon Explorer II

Applications

• High-reliability military avionics systems
• Spacecraft electronic subsystems
• Defense communication equipment requiring radiation tolerance alternatives
• Industrial control systems demanding extended temperature stability

Procurement Notes

Verify that the specific ordering suffix matches the required speed grade and package variant. Confirm that the component meets the necessary QML or MIL-STD-883 qualification standards for the intended application environment. Ensure compatibility with existing Actel Designer or Libero software tools for programming and verification processes.

Selection Notes

Select this device when nonvolatile configuration and high-speed deterministic timing are critical. The 256-pin CQFP package is suitable for designs requiring up to 228 user-programmable I/O pins. Consider the 240 MHz internal clock frequency for complex logic integration. Verify that the 5 V input tolerance aligns with the system's interface requirements.

Part Context

This component belongs to the HiRel SX-A family of FPGAs, which bridges the gap between commercial SX devices and fully radiation-tolerant RadTolerant products. It shares pin compatibility with commercial variants, allowing for prototyping flexibility. The family is characterized by its metal-to-metal antifuse interconnect, offering superior routing resources and protection against reverse engineering compared to SRAM-based architectures.

Replacement Considerations

Direct replacements include other HiRel SX-A family members such as the A54SX32A series in different packages. For higher capacity needs, the A54SX72A series offers increased system gates while maintaining architectural similarities. Ensure any substitute maintains the required ceramic packaging and military temperature range specifications.