A54SX72A-1FGG256I

Overview

The A54SX72A-1FGG256I is an industrial-grade Field Programmable Gate Array from the SX-A family, manufactured by Microchip Technology. It features 108,000 system gates and 6,036 configurable logic blocks within a 256-pin Fine Pitch Ball Grid Array package. The device supports up to 203 user-programmable I/O pins and operates on a 0.22 μm / 0.25 μm CMOS antifuse process. Supply voltage ranges from 2.25V to 5.25V, with an operating temperature range of -40°C to +85°C. Speed grade -1 provides approximately 15% faster performance than standard, supporting internal clock frequencies up to 350 MHz.

Feature Summary

• Nonvolatile single-chip solution utilizing metal-to-metal programmable antifuse technology for permanent interconnection.
• Hot-swap compliant I/Os allowing safe insertion into active systems without power sequencing requirements.
• Configurable I/O standards supporting mixed-voltage operation including 3.3V/5V PCI, 5V TTL, and 2.5V LVCMOS2.
• Integrated boundary-scan testing compliant with IEEE Standard 1149.1 (JTAG) for diagnostic verification.

Applications

• High-performance digital signal processing and control systems requiring deterministic timing.
• Industrial automation interfaces utilizing hot-swap capabilities for system reliability.
• PCI-compliant peripheral designs supporting 66 MHz bus speeds.
• Secure embedded applications leveraging antifuse architecture to prevent reverse engineering.

Procurement Notes

Verify the specific speed grade suffix '-1' corresponds to the required timing constraints for your design, as it differs from the standard speed variant. Confirm the 'I' suffix indicates the industrial temperature range (-40°C to +85°C) rather than commercial or military grades. Ensure the 256-FPBGA package dimensions match your PCB footprint specifications. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.

Selection Notes

Select this component when high gate density and nonvolatile configuration are required without external memory. Consider the -1 speed grade if timing margins are tighter than standard devices allow but full -2 performance is unnecessary. Evaluate the 203 available I/O pins against interface requirements, noting that quadrant clocks are unique to this capacity level in the family. Verify voltage compatibility across all I/O banks given the mixed-voltage support capabilities.

Part Context

This part belongs to the Actel SX-A family of FPGAs, originally developed by Actel Corporation before its acquisition by Microchip Technology. The SX-A series is characterized by its antifuse-based nonvolatile fabric, distinguishing it from volatile SRAM-based FPGAs. The A54SX72A represents the highest capacity device in the initial SX-A lineup, offering the most extensive routing resources and dedicated clock networks among the family members.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Microchip Technology for current cross-reference recommendations or migration paths to newer FPGA families, as older antifuse devices may have limited direct pin-compatible alternatives.