A54SX32A-FGG256M - 48K Gate Antifuse FPGA 256-BGA | Microchip
MPN: A54SX32A-FGG256M ✓ Active| Qty | Unit Price | Extended |
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Drop-in alternatives for A54SX32A-FGG256M — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX32A-1FGG256M
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View Datasheet →A54SX32A-1FGG256I
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View Datasheet →A54SX32A-FGG256M Maximum Ratings & Electrical Characteristics
| Family | SX-A (Actel/Microsemi antifuse FPGA) |
| System Gates | 48K |
| Typical Gates | 32000 |
| Logic Cells | 1800 |
| User I/O | 203 |
| Maximum System Frequency | 238 MHz |
| Process Technology | 0.22 um / 0.25 um CMOS antifuse |
| Core Voltage | 2.5 V |
| I/O Voltage Support | 2.5 V, 3.3 V, 5 V |
| Programmability | One-time programmable (antifuse), non-volatile |
| Package | 256-Ball FBGA (FGG256) |
| Speed / Temperature Grade | M (extended/military range) |
| Mounting Type | Surface Mount |
| Lead Free | Yes |
A54SX32A-FGG256M 256-ball fbga (fgg256) Pin Configuration Guide
Complete pinout information for A54SX32A-FGG256M (256-ball fbga (fgg256) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for A54SX32A-FGG256M.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
A54SX32A-FGG256M is suitable for 6 applications: Avionics and Defense Logic Integration, Industrial Motor and Motion Control, Legacy 5V System Bridge, Satellite and Space Payload Electronics, Medical Equipment Interface Boards, Test and Measurement Instrumentation.
Avionics and Defense Logic Integration
The A54SX32A-FGG256M fits avionics and defense programs because its antifuse fabric is non-volatile and instantly live at power-on, eliminating configuration PROMs and boot delays that SRAM FPGAs require. The M extended-temperature grade supports harsh environmental profiles typical of airborne and defense platforms, while the 48K-system-gate capacity with 1,800 logic cells is sized for bus interface, glue logic, and sequencer functions. Designers integrate multiple discrete logic devices into this single 256-ball FBGA, reducing board area, component count, and reliability-critical solder joints. Because programmed routing is hard-wired, timing is deterministic across temperature - a benefit for certification evidence in DO-254 style programs.
Recommended
Industrial Motor and Motion Control
In industrial drives and motion controllers, the A54SX32A-FGG256M implements PWM sequencing, encoder decoding, and interlock logic with deterministic timing thanks to its antifuse routing. The 2.5 V / 3.3 V / 5 V I/O flexibility lets it interface directly with legacy 5 V TTL sensors and industrial backplane signals without external level shifters, cutting BOM cost and board space. With up to 238 MHz internal performance and 203 user I/Os, one device consolidates functions previously spread across multiple PAL/GAL devices. Designers should budget the one-time-programmable nature by freezing the control algorithm before production programming, since logic fixes require new devices rather than firmware reflashes.
Recommended
Legacy 5V System Bridge
Many installed-base systems - test equipment, process control racks, and communications chassis - still run 5 V logic. The A54SX32A-FGG256M bridges these worlds: per Microchip's SX-A documentation, its I/O supports 5 V operation alongside 2.5 V and 3.3 V standards, unlike modern SRAM FPGAs capped at lower bank voltages. The 48K gate capacity accommodates bus translation, address decoding, and protocol conversion between 5 V VME-style backplanes and newer 3.3 V processor cards. The 256-ball FBGA footprint concentrates 203 user I/Os in a compact outline. Non-volatile antifuse configuration also means the bridge is active the instant power is applied, matching legacy system power sequencing assumptions.
Recommended
Satellite and Space Payload Electronics
Antifuse FPGAs are a natural fit for space payloads because the programmed interconnect cannot suffer configuration upsets from radiation-induced bitstream corruption, a known failure mode of SRAM FPGAs. The A54SX32A-FGG256M provides 32,000 typical gates and deterministic, hard-wired routing for command decoders, telemetry formatters, and power-switching sequencers aboard LEO satellites and sounding rockets. Its low static power from the 0.25 um CMOS process suits power-constrained platforms. The M extended temperature grade covers the wide thermal swings of orbital environments. Engineers should apply Microchip's reliability reports for the SX-A family and derate junction temperatures per program-specific thermal analysis of the FBGA package.
Recommended
Medical Equipment Interface Boards
Patient monitors, imaging subsystems, and laboratory analyzers benefit from the A54SX32A-FGG256M's mix of instant-on non-volatile logic, quiet low-power CMOS operation, and 5 V tolerant I/O for interfacing legacy front-end sensors and actuators. The 1,800-cell sea-of-modules fabric implements acquisition timing, filter sequencing, and safety interlocks with deterministic delays, simplifying verification for regulated design histories. With 203 user I/Os in a 256-ball FBGA, one device replaces clusters of discrete logic around ADCs and communication ports. The one-time-programmable fabric is also an advantage in medical devices where configuration integrity must be assured across the service life of the installed fleet.
Recommended
Test and Measurement Instrumentation
Bench instruments and automated test equipment (ATE) use the A54SX32A-FGG256M for timing generators, trigger matrices, and fixture interface logic. Deterministic antifuse routing means propagation delays do not shift with power cycles or configuration reloads, improving measurement repeatability, and the up-to-238 MHz system performance covers fast clock distribution. Five-volt tolerant I/O directly drives older fixture electronics and relays, while 203 user I/Os provide the pin count needed for dense test points. Because the device is one-time programmable, instrument makers typically reserve utilization headroom (targeting under 70 percent) so late engineering changes can still fit on the same production footprint.
Recommended
Recommended Products Summary
Engineering reference data for A54SX32A-FGG256M — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX32A-1FGG256M | A54SX32A-FGG256A | A54SX32A-FGG256I | A54SX32A-2FGG256 |
|---|---|---|---|---|---|
| Package | 256-BGA (FGG256) | 256-BGA (FGG256) - same | 256-BGA (FGG256) - same | 256-BGA (FGG256) - same | 256-BGA (FGG256) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 48K | 48K | 48K | 48K | 48K |
| User I/O | 203 | 203 | 203 | 203 | 203 |
| Speed Grade | Standard (M grade) | -1 (faster) | A grade | Standard | -2 (fastest) |
| Temperature Grade | M (extended) | M (extended) | [DATA_NEEDED] | Industrial | Commercial |
| Maximum System Frequency | 238 MHz (family, speed-grade dependent) | Higher than standard grade | [DATA_NEEDED] | 238 MHz (family, speed-grade dependent) | Highest in family |
| Programming Technology | Antifuse (one-time programmable, non-volatile) | Antifuse OTP - same | Antifuse OTP - same | Antifuse OTP - same | Antifuse OTP - same |
| Core Voltage | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
Key Differentiators
- Non-volatile antifuse fabric with instant-on operation (vs A54SX32A-FGG256I)
- Faster timing headroom at identical footprint (vs A54SX32A-1FGG256M)
- 5 V legacy I/O tolerance (vs Cross-brand SRAM FPGAs (Xilinx/Intel))
- Deterministic hard-wired routing after programming (vs A54SX32A-FGG256A)
Design Notes
The A54SX32A-FGG256M is one-time programmable: once the antifuse array is burned, the device cannot be reconfigured, and a logic change requires a new device. Plan design freeze milestones before submitting devices for programming, target device utilization below roughly 70-80% to preserve iteration headroom within the 48K system gate budget, and always prototype in the same speed/temperature grade intended for production - timing on antifuse devices is deterministic, so lab results transfer directly to production units.
The 256-ball FGG256 FBGA is a fine-pitch BGA: specify a solder-mask-defined or non-solder-mask-defined pad per the Microchip SX-A datasheet land pattern appendix, and follow IPC-style dogbone or via-in-pad fanout for the full 203-signal ball field. Decouple VCC and VCCA (programming/analog supply) pins with an array of 0.1 uF ceramics placed inside the BGA footprint, plus bulk capacitance at board entry. Keep the programming supply rail clean - noise on VCCA during programming can affect antifuse yield.
Estimated: an SX-A 32K-gate device at moderate utilization and 238 MHz-class clocks typically dissipates in the low hundreds of milliwatts, so the FBGA's board-level thermal path (4-layer or thicker board with ground plane) is usually sufficient without a heatsink. Per the SX-A datasheet, thermal performance depends on device, package, airflow, and system dissipation. Verify junction temperature with Microchip's thermal parameters for FGG256 and your actual switching activity before finalizing the mechanical design for extended-temperature M-grade operation.
With 5 V tolerant I/O banks, control slew rate and drive strength on high-fanout nets to limit ground bounce; group 5 V signals on their assigned banks and keep 3.3 V / 2.5 V banks segregated per the datasheet banking rules. Series-terminate long point-to-point clocks and use the deterministic antifuse routing delays to your advantage when deskewing bus signals - timing extracted from the place-and-run report is final, unlike SRAM FPGA estimates.
Compliance Information
Distributor listings describe the A54SX32A-FGG256M as lead free (Mouser Europe and supplier listings). RoHS/REACH/halogen-free status not explicitly captured in verified sources - verify on Microchip's product page.
