A54SX32-PQ208

Overview

The A54SX32-PQ208 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 48,000 system gates and supports up to 174 user-programmable I/Os in a 208-pin Plastic Quad Flat Pack (PQFP) package. The device features 1,452 combinatorial cells and up to 2,012 dedicated flip-flops. It operates with internal clock frequencies up to 350 MHz and system performance up to 250 MHz. Standard speed grade devices support mixed-voltage operation at 2.5 V, 3.3 V, and 5 V.

Feature Summary

• Nonvolatile single-chip solution utilizing metal-to-metal programmable antifuse interconnect elements for permanent configuration without external memory.
• Supports hot-swap capabilities and power-up/down friendly operation where supply voltages do not require sequencing.
• Includes configurable I/O modules supporting multiple standards including 3.3 V/5 V PCI, 5 V TTL, and LVTTL with individually selectable slew rates.
• Features deterministic timing through unique local routing resources such as DirectConnect and FastConnect within logic clusters.

Applications

• High-performance digital signal processing and data path logic requiring fast counters and state machines.
• PCI-compliant interface designs operating at 66 MHz.
• Systems requiring secure embedded control with protection against reverse engineering via FuseLock technology.

Procurement Notes

Verify the specific speed grade suffix required for the design timing constraints, as standard blank indicates standard speed while numeric suffixes indicate faster performance. Confirm temperature grade availability, noting that commercial grades cover 0 to +70°C while industrial covers -40 to +85°C. Ensure the PQFP-208 package matches the PCB footprint requirements and check for RoHS compliance status if lead-free packaging is mandated by the assembly process.

Selection Notes

Select this device when a nonvolatile FPGA architecture is preferred over volatile SRAM-based alternatives to eliminate configuration boot times. Consider the A54SX32 capacity level if the design requires approximately 48,000 system gates or 1,452 logic modules. Verify that the target application benefits from the low capacitance and resistance of the metal-to-metal interconnect for high-speed signal propagation. Ensure the design utilizes the available global clock networks (HCLK, CLKA, CLKB) effectively for synchronous logic.

Part Context

This component belongs to the Actel SX-A family of FPGAs, which are characterized by their use of antifuse technology rather than SRAM or flash configuration memories. The SX-A series was designed to offer high performance and security for embedded applications. The A54SX32 variant sits in the middle of the family's capacity range, bridging smaller devices like the A54SX08 and larger ones like the A54SX72.

Replacement Considerations

Direct pin-compatible replacements within the same package and gate count may be limited due to the discontinuation of certain speed grades. Check for updated revisions within the A54SX32A series if the original part number lacks the 'A' suffix, ensuring electrical compatibility. Cross-family migration to Microchip RT or PolarFire families requires significant architectural redesign due to differences in nonvolatile technology and I/O structures.