A54SX72A-CQ208B - 108K-Gate Antifuse FPGA, CQFP-208 | Microchip
MPN: A54SX72A-CQ208B ✓ Active| Qty | Unit Price | Extended |
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Drop-in alternatives for A54SX72A-CQ208B — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX72A-CQ208M
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$228 / Unit
View Datasheet →A54SX72A-1CQ208B
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View Datasheet →A54SX72A-1CQ208M
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View Datasheet →5962-0054301QYC
✅ Drop-In📋 Reference alternative (not in catalog)
A54SX72A-CQ208B Maximum Ratings & Electrical Characteristics
| Family | SX-A (Actel antifuse FPGA) |
| System Gates | 108,000 (72K gate designation) |
| Maximum Frequency | 217 MHz |
| Number of Registers | 4024 |
| Dedicated Flip-Flops | 2012 |
| User I/O | 171 |
| Supply Voltage | 2.5 V |
| Supply Voltage Range | 2.25 V to 2.75 V |
| Process Technology | 0.25 um CMOS |
| Programming Technology | Antifuse (one-time programmable) |
| Operating Temperature | -55C to +125C |
| Package | 208-BFCQFP with Tie Bar (CQFP-208, ceramic) |
| Mounting Type | Surface Mount |
| Packaging | Tray, single unit quantity |
| Clock Networks | CLKA, CLKB, quadrant clock (QCLK) |
| Configuration | No external configuration memory required (OTP) |
A54SX72A-CQ208B 208-bfcqfp with tie bar (cqfp-208, ceramic) Pin Configuration Guide
Complete pinout information for A54SX72A-CQ208B (208-bfcqfp with tie bar (cqfp-208, ceramic) 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 A54SX72A-CQ208B.
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
A54SX72A-CQ208B is suitable for 6 applications: Military Avionics and Defense Electronics, Secure Single-Chip Logic Integration, Space-Adjacent and High-Altitude Electronics, Industrial High-Reliability Controllers, Legacy Design Sustainment and Obsolescence Bridging, Test and Measurement Instrument Logic.
Military Avionics and Defense Electronics
The A54SX72A-CQ208B fits military avionics because its ceramic CQFP-208 package is hermetic and mechanically robust, and its -55C to +125C operating range covers unconditioned flight compartments and externally mounted equipment. The 108K gates and 171 I/Os integrate bus interfaces, decoder logic, and housekeeping functions that previously consumed multiple 5V-era logic families onto one 2.5V chip. Because the antifuse fabric is one-time programmable and stores no readable bitstream in an external PROM, configuration data cannot be dumped from the board, addressing anti-tamper concerns common in defense programs. Designers typically use CLKA/CLKB global clocks for system-wide synchronous logic and quadrant clocks for regional processing blocks, per the Microchip quadrant clocks application note, keeping clock skew within budget at frequencies up to the 217 MHz family limit.
Recommended
Secure Single-Chip Logic Integration
The A54SX72A-CQ208B is well suited to secure logic integration because its antifuse interconnect is physically programmed at the factory floor and cannot be reconfigured or read back over any interface. Compared with SRAM FPGAs that require an external configuration flash whose contents can be copied, the SX-A device leaves no bitstream accessible on the board, and there is no configuration controller to glitch or spoof during power-up. The 108K system gates and 4,024 registers absorb glue logic, state machines, bus bridges, and custom peripherals that would otherwise be implemented in ASICs with high NRE or discrete devices that reveal system topology. Operating on a single 2.5V rail (2.25V to 2.75V) simplifies power tree design in compact secure modules, while the 217 MHz capability supports mainstream embedded processing glue at modern clock rates.
Recommended
Space-Adjacent and High-Altitude Electronics
For launch vehicles, balloons, and near-space payloads that do not mandate flight-qualified RT parts but still face extreme temperature and vibration, the A54SX72A-CQ208B provides a hermetic ceramic CQFP rated from -55C to +125C with the mechanical tie-bar package that withstands thermal cycling and shock. The one-time-programmable antifuse fabric has no configuration memory susceptible to single-event configuration upsets, a structural advantage over SRAM FPGAs in radiation environments - only user registers must be protected by design techniques. With 108K gates and 171 user I/Os on a 2.5V supply, designers implement telemetry formatting, sensor front-end sequencing, and actuator interface logic in one low-power chip. Timing should be closed with margin below the 217 MHz maximum because antifuse routing resistance increases delay in long paths.
Recommended
Industrial High-Reliability Controllers
Industrial systems operating in extreme environments - downhole tools, steel mills, power substations, and outdoor automation cabinets - benefit from the A54SX72A-CQ208B's -55C to +125C rating, which exceeds the AEC and commercial ranges of plastic-packaged FPGAs. The ceramic CQFP-208 with tie bar resists the solder-joint fatigue and moisture ingress that degrade plastic packages over years of thermal cycling. Its 108K gates integrate motor sequencers, safety interlock state machines, and communication bridges, replacing boards of discrete logic; the 2,012 dedicated flip-flops support wide parallel datapaths at clock rates up to 217 MHz on the 2.5V supply. Because the device is one-time programmable, firmware control is inherent: no field reconfiguration means deployed units always run the validated fusemap, simplifying functional-safety audit trails in process-control installations.
Recommended
Legacy Design Sustainment and Obsolescence Bridging
The A54SX72A-CQ208B is a primary sustainment vehicle for legacy Actel SX and SX-A designs. Many fielded defense and industrial boards were built around 208-pin ceramic CQFP SX-A devices, and the CQ208B remains procurable from 8 distributors indexed by Octopart, with DigiKey shipping from stock as of 2026-09-03. Because Microchip maintains the Libero SoC toolchain for antifuse families, original fusemap source files can be recompiled and reprogrammed into new devices without PCB changes. The pin-compatible speed and screening variants (A54SX72A-CQ208M, A54SX72A-1CQ208B, A54SX72A-1CQ208M) provide allocation flexibility when a specific suffix is out of stock, since FindIC confirms complete interchangeability with no circuit modification required across these drop-ins.
Recommended
Test and Measurement Instrument Logic
Bench and modular instruments require deterministic, non-reconfigurable control logic whose behavior is fixed after calibration - exactly the profile of the A54SX72A-CQ208B's one-time-programmable antifuse fabric. The 108K gates implement trigger state machines, timing sequencers, and instrumentation bus bridges, while 171 user I/Os interface front-panel circuitry and analog front-end control on the 2.5V rail. The ceramic CQFP-208 package maintains signal integrity and thermal stability across the -55C to +125C range demanded by calibration-grade equipment, and quadrant clocking (QCLK) per the Microchip application note allows regional timing domains - for example, separate sample-and-hold and communication timing - without excessive global clock loading. Deterministic post-programming behavior supports measurement repeatability claims required in metrology documentation.
Recommended
Recommended Products Summary
Engineering reference data for A54SX72A-CQ208B — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX72A-CQ208M | A54SX72A-1CQ208B | A54SX72A-1CQ208M | 5962-0054301QYC |
|---|---|---|---|---|---|
| Package | 208-BFCQFP with Tie Bar (ceramic) | 208-BFCQFP with Tie Bar - same | 208-BFCQFP with Tie Bar - same | 208-BFCQFP with Tie Bar - same | 208-BFCQFP with Tie Bar - same |
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology (Microsemi) | Microchip Technology (Microsemi) | Microchip Technology (Microsemi) | Microchip Technology (SMD code) |
| System Gates | 108,000 | 108,000 | 108,000 | 108,000 | 108,000 |
| Maximum Frequency | 217 MHz | 217 MHz class | 250 MHz class (-1 speed grade) | 250 MHz class (-1 speed grade) | 217 MHz class |
| User I/O | 171 | 171 | 171 | 171 | 171 |
| Operating Temperature | -55C to +125C | -55C to +125C (military screening) | -55C to +125C | -55C to +125C (military screening) | -55C to +125C (SMD qualified) |
| Supply Voltage | 2.5 V (2.25-2.75 V) | 2.5 V (2.25-2.75 V) | 2.5 V (2.25-2.75 V) | 2.5 V (2.25-2.75 V) | 2.5 V (2.25-2.75 V) |
| Screening Level | Commercial (B suffix) | Military (M suffix) | Commercial (B suffix) | Military (M suffix) | SMD 5962-0054301 qualified |
| Registers / Flip-Flops | 4024 / 2012 | 4024 / 2012 | 4024 / 2012 | 4024 / 2012 | 4024 / 2012 |
Key Differentiators
- Lowest-cost screening option in the ceramic CQFP-208 family (vs A54SX72A-CQ208M)
- Cost-optimized speed grade for designs closing at 217 MHz (vs A54SX72A-1CQ208B)
- Inherent configuration security (vs SRAM-based FPGA equivalents (e.g., Xilinx Spartan in QFP packages))
Design Notes
Provide a regulated 2.5V rail held within the 2.25V to 2.75V datasheet window across all operating corners. Because the antifuse core draws largely static current, bulk decoupling at the board level plus 0.1uF ceramics at each VDD pin group is generally sufficient; place capacitors close to the CQFP power pins on the opposite board side if routing constrains top-side placement. Sequence the 2.5V rail monotonically - although OTP devices have no configuration power-up requirement, I/O pins should not be driven above VDD before power is stable.
The antifuse fabric is one-time programmable: any functional or timing change after programming scraps the device. Complete gate-level simulation, static timing analysis at the worst-case speed grade, and pin-assignment lock in Libero SoC before submitting to programming. Budget timing margin below the 217 MHz headline figure - antifuse routing adds resistance-dependent delay, and long nets between quadrants can consume significant nanoseconds. Archive the fusemap source and constraint files for future rebuilds.
Use the CLKA and CLKB global clock networks for system-wide synchronous logic and the quadrant clock (QCLK) resources for regional blocks, as documented in the SX-A datasheet and the Using A54SX72A and RT54SX72S Quadrant Clocks application note. Driving high-fanout clocks through general routing instead of the dedicated clock trees increases skew and jitter. On the 171 user I/Os, match trace lengths for parallel buses and series-terminate incident-wave switching outputs to control reflections on the ceramic CQFP's relatively long lead-frame stubs.
The 208-pin ceramic CQFP uses a 0.5mm-class lead pitch with tie-bar corners; define the land pattern per the package mechanical drawing in the SX-A datasheet and support the tie bars with plated anchors to absorb lead-forming tolerance. Inspect solder joints with X-ray or angled optical inspection since the gull-wing leads hide fillets. Handle with ESD precautions and avoid lead rework - ceramic package leads crack when reflowed more than twice.
Compliance Information
Ceramic HiRel package; RoHS/REACH status not stated in provided web data - many ceramic CQFP HiRel parts are exempt or non-RoHS due to leaded die-attach/lead finish; confirm with Microchip for the specific order code.
