A54SX32A-2BGG329
A54SX32A-2BGG329 - 48K Gate FPGA, 313MHz | Microchip Technology
The Microchip Technology A54SX32A-2BGG329 (formerly Actel/Microsemi) is a 48,000-system-gate antifuse FPGA from the SX-A family, delivering 2,880 logic cells, up to 249 user I/Os, and a maximum toggle rate of 313 MHz, housed in a 329-ball BGA (BGG329) package. The -2 speed grade device operates from a single 2.5V core supply and is fabricated on a 0.25 um CMOS process.
An FPGA (Field-Programmable Gate Array) is a semiconductor device containing a sea of programmable logic blocks and interconnects that designers configure after manufacturing. The SX-A family belongs to the antifuse FPGA category: unlike SRAM-based FPGAs, its interconnect elements are permanently programmed at the factory or in the lab, so the configuration is retained at power-up without any external boot PROM, improving security and reducing BOM count in the power-management hierarchy of a system design.
Key features of the A54SX32A-2BGG329 include 48K system gates (32K raw gates, 2,880 logic cells) for integrating glue logic, bus interfaces, and state machines into a single chip; 249 user I/Os in the 329-ball BGA, supporting high-pin-count board layouts; and the -2 speed grade supporting 313 MHz internal performance. The antifuse architecture contributes inherently low power, high immunity to configuration readback, and essentially non-volatile, single-chip integration, which Microchip positions as lowering the performance premium versus competing architectures.
Technically, the device uses a sea-of-modules architecture with repeated logic modules (C-cells and R-cells) and a routing fabric programmed by antifuse elements. Because the bitstream is physically burned in, there is no configuration time at power-up and no external configuration device to attack or corrupt, a property valued in defense, avionics, and industrial control where design protection matters.
Typical applications include industrial automation and control, communications and networking line cards, test and measurement instrumentation, aerospace and defense subsystems, and bridging/glue logic for processors and ASICs. The large I/O count and deterministic power-up suit designs requiring many interface signals to be live immediately at reset.
A key design consideration: antifuse FPGAs are one-time programmable. Unlike SRAM FPGAs, you cannot reconfigure the same device; design iteration requires new parts, so verification in simulation and timing closure with the Libero/Designer flow should be complete before programming production units.
This page synthesizes distributor pricing availability, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing information gain over standard catalog listings.
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