A54SX32A-PQG208M - 32K-Gate Antifuse FPGA, 208-PQFP | Microchip
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Drop-in alternatives for A54SX32A-PQG208M — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX32A-PQG208A
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$47.8 / Unit
View Datasheet →A54SX32A-1PQG208M
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View Datasheet →A54SX32A-PQG208I
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A54SX32A-2PQG208
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A54SX32A-1PQG208I
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$44.75 / Unit
View Datasheet →A54SX32A-2PQG208I
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View Datasheet →A54SX72A-1PQG208
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View Datasheet →A54SX32A-PQG208M Maximum Ratings & Electrical Characteristics
| Family | SX-A (Actel/Microsemi antifuse FPGA) |
| Equivalent System Gates | 32000 gates |
| Logic Modules (Cells) | 1800 |
| User I/O | 174 |
| Maximum Toggle Frequency | 238 MHz |
| Process Technology | 0.25 um CMOS antifuse |
| Core Supply Voltage | 2.5 V (2.25 V to 2.75 V) |
| Programming Technology | Antifuse, one-time programmable (OTP) |
| Package | 208-PQFP (28x28 mm, 0.5 mm pitch) |
| Mounting Type | Surface Mount |
| Operating Temperature | -55C to +125C (military / TC) |
| Architecture | Sea-of-modules (C-cells and R-cells) |
| Configuration Retention | Non-volatile (antifuse, no boot configuration) |
| Radiation Tolerance | Configuration inherently immune to SEU (no SRAM configuration memory) |
| Packaging | Tray |
A54SX32A-PQG208M 208-pqfp (28x28 mm, 0.5 mm pitch) Pin Configuration Guide
Complete pinout information for A54SX32A-PQG208M (208-pqfp (28x28 mm, 0.5 mm pitch) 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-PQG208M.
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-PQG208M is suitable for 6 applications: Avionics Control Logic, Military Communications Equipment, Space and High-Reliability Payloads, Industrial Automation and Control, Obsolescence Mitigation and Board Redesign, Secure Embedded Systems.
Avionics Control Logic
In avionics flight-control, ARINC-interface, and mission-computer designs, the A54SX32A-PQG208M fits because its antifuse configuration contains no SRAM configuration memory, eliminating configuration-upset concerns at altitude and providing instant-on operation required by power-interrupt-tolerant avionics architectures. The -55C to +125C M-grade matches unconditioned bay and wing ambient requirements. It is typically used as deterministic glue logic between processors and ARINC 429/1553 transceivers, with 174 user I/Os absorbing bus-interface fan-out. Design it with fixed routing budgets - timing is fixed after place-and-route, which simplifies DO-254-style worst-case timing sign-off.
Recommended
Military Communications Equipment
Software-defined and legacy military radios use the A54SX32A-PQG208M for framing, formatting, and interface bridging logic where tamper resistance matters: because the antifuse netlist is written into silicon and no bitstream exists in external memory, configuration extraction is significantly harder than on SRAM FPGAs. The 238 MHz-class toggle rate covers common modulation and backplane interface clocks, while 2.5 V core operation keeps power low for man-portable platforms. Designers should budget the one-time-programmable limitation by locking the netlist after simulation, and use the companion industrial grades during early development.
Recommended
Space and High-Reliability Payloads
The SX-A antifuse architecture is a long-standing choice for satellite housekeeping and payload interface logic: configuration is immune to single-event upsets by construction, total-dose behavior of the 0.25 um antifuse process is well characterized over decades of flight heritage, and the PQFP package avoids solder-ball fatigue concerns of fine-pitch BGAs. The A54SX32A-PQG208M provides 32K gates and 174 I/Os sufficient for telemetry formatting, watchdog, and latchup-protection supervisory logic. For radiation-critical paths, pair with the rad-tolerant RT54SX family variants and confirm the required screening flow with Microchip before design freeze.
Recommended
Industrial Automation and Control
On factory-floor PLC backplanes and motor-control interface boards, the A54SX32A family consolidates PAL/GAL/22V10 glue logic, address decoding, and state machines into one chip, cutting BOM count and board area. Although the PQG208M is the military grade, industrial programs commonly standardize on it for derating margin: operating a -55C to +125C device at 0C to +70C ambient gives large guard bands on electromigration and timing drift. Its 5 V-tolerant I/O options interface directly with legacy TTL sensors and drives. Use the industrial PQG208I variants when cost, not margin, is the driver.
Recommended
Obsolescence Mitigation and Board Redesign
Defense and industrial programs facing end-of-life on Actel SX, FPGAs-in-disguise PLDs, or mask-programmed ASICs use the A54SX32A-PQG208M as a consolidation vehicle: its 32K gates and 1,800 modules absorb multiple legacy PLDs, and the 208-pin PQFP is hand-solderable for low-volume maintenance builds. Because the die is one-time programmable, redesigns should re-verify all timing in the current Libero/Designer toolchain before committing. Long-term availability is supported by Microchip's continued defense product line, making it a safer re-baseline target than broker-sourced discontinued silicon.
Recommended
Secure Embedded Systems
Security-focused systems - cryptographic key handling, secure boot roots, and anti-tamper platforms - benefit from the A54SX32A-PQG208M because it stores no external configuration bitstream and offers no JTAG-retrievable SRAM configuration image at power-up. Logic is fixed in antifuse silicon, supporting platforms where reverse engineering of the implemented function must be difficult. At 32K gates it implements moderate cryptographic interface wrappers and bus filters. Note the trade-off: OTP means no field patching; any vulnerability fix requires replacing programmed devices, so simulate and security-review the netlist exhaustively before programming military units.
Recommended
Recommended Products Summary
Engineering reference data for A54SX32A-PQG208M — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX32A-PQG208A | A54SX32A-1PQG208M | A54SX32A-2PQG208 | A54SX72A-1PQG208 |
|---|---|---|---|---|---|
| Package | 208-PQFP (28x28 mm) | 208-PQFP - same | 208-PQFP - same | 208-PQFP - same | 208-PQFP - same outline, 72K die |
| Brand | Microchip Technology (Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 32000 | 32000 | 32000 | 32000 | 72000 |
| Logic Modules | 1800 | 1800 | 1800 | 1800 | 4032 |
| User I/O | 174 | 174 | 174 | 174 | 174 |
| Max Toggle Frequency | 238 MHz | [DATA_NEEDED] | approx. 172 MHz class (-1 speed grade) | 238 MHz (-2 speed grade) | approx. 172 MHz class (-1 speed grade) |
| Operating Temperature | -55C to +125C (M) | Extended/automotive grade (A) | -55C to +125C (M) | Commercial/industrial grade | Commercial/industrial grade |
| Programming Technology | Antifuse OTP | Antifuse OTP | Antifuse OTP | Antifuse OTP | Antifuse OTP |
| Core Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
Key Differentiators
- Military temperature qualification (vs A54SX32A-2PQG208)
- Configuration security (vs SRAM FPGAs (e.g., Xilinx/Intel equivalents))
- Cost-optimized speed grade choice (vs A54SX32A-1PQG208M)
- Capacity headroom on same footprint (vs A54SX72A-1PQG208)
Design Notes
Supply the A54SX32A-PQG208M core from a clean 2.5 V rail within the 2.25 V to 2.75 V window per the SX-A datasheet. Decouple every VDD/VSS pin pair with 0.1 uF ceramic capacitors placed within 2 mm of the package, plus at least one 10 uF bulk capacitor per supply domain. Antifuse FPGAs have low, data-dependent core current with no configuration surge at power-up, but I/O switching current on 174 outputs can inject significant ground bounce - use a solid, unbroken ground plane under the 208-PQFP and assign high-fan-out returns to adjacent ground pins.
The most costly mistake with this device is forgetting it is one-time programmable. Lock your netlist only after full functional simulation, static timing analysis at the worst military corner, and - ideally - validation on a commercial or industrial speed-grade sample in the same PQG208 package. Also confirm your programming hardware and Actel/Microsemi programming-file format are available before procurement; military-grade units cannot be used as test vehicles without risk. Finally, verify the exact ordering-code suffix semantics (M, A, I, speed digits) against the Microchip datasheet - broker listings frequently conflate PQ208 and PQG208 codes.
The 208-PQFP (28x28 mm, 0.5 mm pitch) footprint needs fan-out with 0.2 mm or finer traces to escape the two outer rows; plan for at least four layers so power, ground, and signal returns have dedicated planes. PQFP leads are susceptible to solder bridging - specify a rectangular pad with solder-mask-defined openings and inspect with AOI. For thermal relief, the exposed lead-frame of the PQFP conducts most heat to the leads, so generous copper on signal layers connected to ground pins improves dissipation at -55C to +125C extremes.
With 174 I/Os and up to 238 MHz-class internal toggle rates, control edge rates using the SX-A I/O slew options and series-terminate long traces (22-33 ohm) to suppress ringing on backplane lines. Group related outputs on the same I/O bank so voltage-reference and ground assignments remain consistent. Because the device is OTP, reserve a small set of spare I/Os routed to test points for post-production debug - you cannot reprogram pin assignments after the fact.
Compliance Information
M-suffix military-grade device; RoHS/lead-finish status was not stated in the retrieved distributor data. Military program line items are frequently supplied with leaded finishes for legacy soldering compatibility - verify with Microchip product change notifications.
