A54SX32-1CQ256B

Overview

The A54SX32-1CQ256B is a high-reliability Field Programmable Gate Array from the HiRel SX-A family, manufactured by Microsemi. It features 48,000 system gates and 2,880 logic modules within a 256-pin Ceramic Quad Flat Pack (CQFP) package. The device operates at a maximum internal clock frequency of 240 MHz with a pin-to-pin clock-to-out delay of 5.3 ns under military temperature conditions (-55°C to +125°C). It supports mixed-voltage operation at 2.5 V, 3.3 V, and 5 V, offering up to 228 user-programmable I/O pins.

Feature Summary

• Military-grade reliability with MIL-STD-883 Class B certification and QML compliance for harsh environments.
• 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

• High-reliability military avionics and defense systems requiring radiation tolerance alternatives.
• Spacecraft electronics and satellite communication subsystems demanding long-term stability.
• Industrial control systems operating in extreme temperature environments.
• Secure hardware implementations utilizing Actel Secure Programming Technology.

Procurement Notes

Verify that the ordering suffix 'B' confirms MIL-STD-883 Class B qualification. Confirm the speed grade '1' indicates approximately 15% faster performance than standard variants. Ensure the CQFP package matches the required hermetic sealing specifications for the target application environment.

Selection Notes

Select this component when design migration from commercial SX-A devices to military specifications is required without pinout changes. Consider the 256-pin CQFP package for applications needing up to 228 I/Os with hermetic sealing. Evaluate the 240 MHz internal performance against system timing constraints to ensure the 5.3 ns clock-to-out delay meets interface requirements.

Part Context

This device belongs to the HiRel SX-A family, which serves as a bridge between commercial FPGA designs and radiation-tolerant solutions. It shares architectural similarities with the broader SX series but includes specific screening processes for military use. The part number structure identifies the gate count, speed grade, package type, and qualification level.

Replacement Considerations

Direct replacements include other HiRel SX-A devices such as the A54SX72A for higher capacity needs, provided pin compatibility is maintained. Verify that alternative packages like CQFP-208 or CQFP-84 meet the I/O count requirements if a smaller footprint is desired.