A54SX16A-2FGG256

Overview

The A54SX16A-2FGG256 is a Field Programmable Gate Array from the SX-A family, featuring 24,000 system gates and 180 user-programmable I/O pins. It utilizes 0.22 μm / 0.25 μm CMOS antifuse technology with a 2.5 V core voltage operating between 2.25 V and 2.75 V. The device supports up to 350 MHz internal performance and 250 MHz system performance. It includes 1,452 logic modules (combinatorial cells) and dedicated flip-flops within a 256-pin Fine Pitch Ball Grid Array package.

Feature Summary

• Nonvolatile single-chip solution using metal-to-metal programmable antifuse interconnect elements for permanent low-impedance connections.
• Supports mixed-voltage operation including 2.5 V, 3.3 V, and 5 V I/O standards with 5 V input tolerance and drive strength.
• Hot-swap compliant I/Os allowing safe insertion into active systems without power sequencing requirements.
• Deterministic timing architecture with DirectConnect and FastConnect routing resources for predictable signal propagation.

Applications

• High-performance digital logic integration replacing complex CPLDs or gate arrays
• PCI bus interface designs requiring 66 MHz compliance
• Systems requiring hot-swappable capabilities and cold-sparing configurations

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm temperature grade and packaging compliance. Confirm availability status as legacy antifuse products may have limited production runs. Ensure design tools support the SX-A architecture for proper place-and-route implementation.

Selection Notes

Select this component when deterministic timing and high-speed internal clocking are required. The -2 speed grade offers approximately 25% faster performance than the standard grade. Verify that the 256-pin FBGA package fits the PCB footprint constraints and that the 180 available I/Os meet the interface requirements.

Part Context

This part belongs to the Actel SX-A family of FPGAs, which are characterized by their nonvolatile antifuse technology. The family ranges from 12,000 to 108,000 system gates, offering various package options including PQFP, TQFP, PBGA, and FBGA. The SX-A series is designed for applications needing high reliability and security against reverse engineering.

Replacement Considerations

Direct replacements include other speed grades within the A54SX16A series such as A54SX16A-FGG256 or A54SX16A-1FGG256, provided timing requirements are met. Cross-family migration to Microchip PolarFire or IGLOO devices requires significant architectural redesign due to differences in volatile versus nonvolatile configuration technologies.