A54SX32A-1TQ144

Overview

The A54SX32A-1TQ144 is a Field Programmable Gate Array from the SX-A family, fabricated using 0.22 μm / 0.25 μm CMOS antifuse technology. It provides 48,000 system gates and features a sea-of-modules architecture with 2,880 logic modules (combinatorial cells and dedicated flip-flops). The device supports up to 249 user-programmable I/O pins and includes three global clock networks. It operates at internal frequencies up to 350 MHz and system performance up to 250 MHz. The component is housed in a 144-pin Thin Quad Flat Pack (TQFP) package and 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 low-impedance connections.
• Supports hot-swap compliant I/Os allowing power-up/down without voltage sequencing requirements.
• Includes deterministic timing capabilities with DirectConnect and FastConnect routing resources for predictable signal propagation.
• Features Actel Secure Programming Technology with FuseLock to prevent reverse engineering and design theft.

Applications

• 66 MHz PCI compliant designs
• High-performance state machines and fast counters
• Data path logic integration

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm temperature grade and packaging compliance. Confirm that the TQFP package availability aligns with current production status, as older speed grades or packages may have discontinuation notices. Ensure the design software version supports the specific antifuse programming requirements for this SX-A family member.

Selection Notes

Select this model when 48,000 system gates and 249 I/Os are required within a 144-pin footprint. The -1 speed grade offers approximately 15% faster performance than the standard grade. Verify that the application requires nonvolatile configuration and does not need embedded memory blocks, as this device relies on antifuse technology without SRAM-based reconfiguration.

Part Context

This component belongs to the Actel SX-A FPGA family, which was later acquired by Microchip Technology. The SX-A series is characterized by its high-density antifuse architecture, offering deterministic timing and security advantages over volatile FPGAs. It serves as a bridge between CPLDs and gate arrays, providing higher performance and density in a single-chip nonvolatile solution.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consider checking for updated Microchip SX-M or PolarFire equivalents if long-term supply assurance is required, though architectural differences exist.

FAQ

How does the DirectConnect feature improve performance?

DirectConnect provides a horizontal routing resource connecting a C-cell to its neighboring R-cell within a SuperCluster. It uses a hardwired signal path requiring no programmable interconnection, achieving a maximum routing delay of less than 0.1 ns.

What is the behavior of I/Os during power-up?

All I/Os are tristated during power-up/down. VCCA and VCCI do not need to be stable or powered in any specific order. Unused I/Os can be configured with individually selectable pull-ups or pull-downs to ensure a known state.

Can JTAG pins be used as general-purpose I/Os?

Yes, in Flexible mode, TDI, TCK, and TDO can function as user I/Os or BST pins. TMS cannot be used as a user I/O in either Dedicated or Flexible mode.