A54SX16A-FG256M

Overview

The A54SX16A-FG256M is a nonvolatile Field Programmable Gate Array from the Actel SX-A family, fabricated on 0.22 μm / 0.25 μm CMOS antifuse technology. It provides 24,000 system gates and supports up to 360 user-programmable I/O pins. The device operates with a nominal supply voltage of 2.5 V, ranging from 2.25 V to 2.75 V. It features 1,452 combinatorial cells and up to 2,012 dedicated flip-flops. The FG256 package utilizes a 256-pin Fine Pitch Ball Grid Array (FBGA) with a 1.0 mm lead pitch. The component supports mixed-voltage operation for 2.5 V, 3.3 V, and 5 V I/Os.

Feature Summary

• Nonvolatile single-chip solution utilizing metal-to-metal programmable antifuse interconnect elements for permanent configuration without external memory.
• Hot-swap compliant I/O architecture allowing insertion into active systems without power sequencing requirements or system degradation.
• Deterministic timing performance enabled by DirectConnect and FastConnect routing resources that minimize signal propagation delays.
• Integrated security features including FuseLock technology to prevent reverse engineering and unauthorized design access.

Applications

• High-performance logic integration replacing complex programmable logic devices (CPLDs).
• Systems requiring deterministic timing and fast counters or state machines.
• Applications necessitating hot-swappable hardware capabilities.

Procurement Notes

Verify the specific speed grade suffix associated with the part number, as standard and faster grades exhibit distinct timing characteristics. Confirm the temperature range designation matches the operational environment requirements. Ensure compatibility with the Actel Designer software version used for programming the antifuse structure. Check for RoHS compliance status if environmental regulations apply to the manufacturing process.

Selection Notes

Select this device when a nonvolatile FPGA solution is required to eliminate configuration bitstream overhead. Consider the 24,000 system gate capacity against the specific logic module requirements of the design. Evaluate the 256-pin FBGA package constraints regarding PCB layout and thermal dissipation. Verify that the 2.5 V core voltage aligns with the available power rails in the target system architecture.

Part Context

This component belongs to the Actel SX-A family of FPGAs, which are characterized by their use of antifuse technology rather than volatile SRAM configurations. The family spans from 8,000 to 108,000 system gates, offering various package options including PQFP, TQFP, PBGA, and FBGA. The SX-A series is designed for low-power, high-performance applications using 0.22/0.25 μm CMOS processes.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Microchip Technology for current equivalent offerings within the Actel portfolio.