A54SX72A-1FG256M - 108K-Gate Antifuse FPGA, 256-FBGA | Microchip
MPN: A54SX72A-1FG256M ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $89.5 | $89.50 |
| 10 | $82.1 | $821.00 |
| 100 | $74.9 | $7,490.00 |
| 500 | $68.4 | $34,200.00 |
| 1,000 | $62.75 | $62,750.00 |
Drop-in alternatives for A54SX72A-1FG256M — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX72A-FG256M
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View Datasheet →A54SX72A-1FGG256M
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View Datasheet →A54SX72A-1FGG256I
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$136 / Unit
View Datasheet →A54SX72A-1FG256M Maximum Ratings & Electrical Characteristics
| Family | SX-A (Antifuse FPGA) |
| System Gates | 108,000 |
| Typical Gates | 72,000 |
| Module Cells | 4,024 |
| Number of I/O | 203 |
| Supply Voltage | 2.25 V to 2.75 V (2.5 V nominal core) |
| Maximum System Frequency | 250 MHz |
| Process Technology | 0.25 um |
| Programming Type | One-Time Programmable (Antifuse) |
| Speed Grade | -1 |
| Operating Temperature | -55C to +125C (TC) |
| Package | 256-FBGA (17x17 mm) |
| Mounting Type | Surface Mount |
| Packaging | Tray |
| RoHS Status | RoHS3 Compliant |
| Manufacturer Lead Time | 20 weeks |
| Product Status | Active |
A54SX72A-1FG256M 256-fbga (17x17 mm) Pin Configuration Guide
Complete pinout information for A54SX72A-1FG256M (256-fbga (17x17 mm) 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-1FG256M.
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-1FG256M is suitable for 6 applications: Aerospace and Defense Logic, Industrial Control and Automation, Communications Line Cards, Obsolescence Mitigation / Legacy Redesign, Secure / Anti-Cloning Systems, Test and Measurement Instrumentation.
Aerospace and Defense Logic
The A54SX72A-1FG256M fits aerospace and defense payloads because its antifuse fabric is inherently radiation-tolerant in configuration (no bitstream can be upset in external memory) and the M-suffix package is rated from -55C to +125C, covering MIL-temperature programs. With 108,000 system gates and 203 user I/O, it consolidates glue logic, bus interfaces, and state machines that were previously multiple ASICs or SSI/MSI parts. Because it is one-time programmable and configures in milliseconds at power-up, no configuration PROM is needed on orbit or in flight hardware, reducing BOM count and single-point failure sources. Designers should implement triple-module redundancy in logic for SEU mitigation where required, and reserve the faster -2 speed grade for time-critical interfaces.
Recommended
Industrial Control and Automation
In industrial controllers, the A54SX72A-1FG256M replaces multiple discrete logic devices with a single 256-FBGA chip, cutting board area and assembly cost. The 2.5V core supply keeps power low, important for fanless PLC modules and distributed I/O nodes, while 203 I/O lines handle parallel sensor, encoder, and actuator interfaces without external fanout. Its deterministic antifuse interconnect delivers consistent timing across units - valuable in motion control and safety-related sequencing where SRAM-FPGA configuration variability is undesirable. The -1 speed grade comfortably handles typical 20-50 MHz industrial state machines. Designers should budget a 2.5V regulator and level-shift circuitry for 3.3V or 5V field signals, and use the wide -55C to +125C M-grade rating for outdoor and unconditioned cabinets.
Recommended
Communications Line Cards
Telecom and datacom line cards benefit from the A54SX72A-1FG256M's 250 MHz-class fabric performance and large I/O count for backplane interface logic, framer glue, and protocol bridging. The segmented antifuse routing provides short, predictable interconnect delays, helping close timing on TDM and packet-processing pipelines without the timing closure iterations common on larger SRAM devices. Instant-on configuration means the card is active within milliseconds of power application, simplifying hot-swap sequencing at the shelf level. With the M temperature rating, cards qualify for central-office and outside-plant equipment alike. Place the FPGA near the backplane connector to minimize trace lengths on the parallel 203-I/O banks and decouple each supply ball pair with 0.1 uF ceramics.
Recommended
Obsolescence Mitigation / Legacy Redesign
A primary use of the A54SX72A-1FG256M today is sustaining legacy Actel SX-A designs whose original devices are exhausted. Because the -1FG256M remains active per Microchip and distributor listings, it serves as the form-fit-function continuation part for existing programmed designs - provided the design netlist is reprogrammed using Microchip Libero/Designer tools and an approved programmer. Its one-time-programmable nature means replacement boards must be programmed at production or via a programming house, not reconfigured in the field. The 20-week manufacturer lead time argues for lifecycle buys; XAIPART stocks same-package variants to bridge gaps. Verify speed-grade timing tables against the original design's constraints before committing to the -1 grade.
Recommended
Secure / Anti-Cloning Systems
Systems requiring bitstream security - license enforcement modules, encrypted key storage wrappers, anti-counterfeit authentication logic - exploit the antifuse FPGA's inability to be read back. The A54SX72A-1FG256M stores configuration entirely in internal metal antifuse links; there is no external flash to dump and no JTAG readback of the programmed design, raising the effort bar for IP theft far above SRAM FPGAs. The 108K-gate capacity is sufficient for AES wrappers, challenge-response engines, and board-ID logic. Because programming is permanent, incorporate a security review and simulation sign-off step before committing silicon, and reserve unprogrammed devices in a controlled inventory. The M-grade temperature range also suits tamper-exposed outdoor installations.
Recommended
Test and Measurement Instrumentation
Bench and automated test equipment uses the A54SX72A-1FG256M for deterministic trigger logic, counter/timer arrays, and bus-interface glue where jitter and latency consistency matter. Antifuse interconnect gives every production unit identical propagation delay, simplifying calibration across a fleet of instruments - an advantage over process-variation-prone ASICs and configurable SRAM routing. The 203 I/O support dense parallel capture to FPGA-hosted comparators, and the 250 MHz-class fabric handles fast event counting. Because instruments operate in conditioned environments, the commercial-range -2 variants are also viable where maximum speed is needed. Decouple the 2.5V core aggressively and keep clock balls on matched-length traces to preserve setup margins.
Recommended
Recommended Products Summary
Engineering reference data for A54SX72A-1FG256M — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX72A-FG256M | A54SX72A-1FGG256M | A54SX72A-2FG256 | A54SX72A-2FGG256I |
|---|---|---|---|---|---|
| Package | 256-FBGA (17x17 mm) | 256-FBGA - same | 256-FBGA (GG variant) - same footprint | 256-FBGA - same | 256-FBGA (GG variant) - same footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 108,000 | 108,000 | 108,000 | 108,000 | 108,000 |
| User I/O | 203 | 203 | 203 | 203 | 203 |
| Speed Grade | -1 | [DATA_NEEDED] | -1 | -2 (faster) | -2 (faster) |
| Operating Temperature | -55C to +125C (TC) | -55C to +125C (M grade) | -55C to +125C (TC) | Commercial [DATA_NEEDED: exact range] | Industrial (-40C to +100C typ.) |
| Supply Voltage | 2.25 V to 2.75 V (2.5 V nominal) | 2.25 V to 2.75 V | 2.25 V to 2.75 V | 2.25 V to 2.75 V | 2.25 V to 2.75 V |
| RoHS Status | RoHS3 Compliant | [DATA_NEEDED] | RoHS3 Compliant | [DATA_NEEDED] | [DATA_NEEDED] |
| Programming Type | Antifuse (One-Time Programmable) | Antifuse | Antifuse | Antifuse | Antifuse |
Key Differentiators
- Instant-on, configuration-free startup (vs A54SX72A-2FG256)
- Extended temperature range (vs A54SX72A-2FG256I)
- Cost-optimized speed grade (vs A54SX72A-2FG256)
- Inherent bitstream security (vs SRAM FPGAs (e.g., Artix-7))
Design Notes
The A54SX72A-1FG256M requires a regulated 2.5V core supply (2.25V-2.75V range per distributor data). Unlike SRAM FPGAs, antifuse devices draw no configuration surge at power-up, so the regulator only needs to handle steady-state logic current plus I/O loading. Provide at least one 10 uF bulk capacitor per supply domain and 0.1 uF ceramics at supply ball pairs. Because the device is one-time programmable, an out-of-range supply during programming can permanently damage antifuse links - verify rail accuracy to within 5% before programming.
This is a one-time-programmable device: a flawed bitstream cannot be corrected in the field. Complete gate-level simulation, timing verification against the -1 speed-grade tables in the SX-A datasheet, and ideally prototype on the faster -2 grade or a lower-cost PQ208 variant before committing FG256M production units. Also note quadrant clock pins A, B, C, and D are used only on the A54SX72A; map global clocks deliberately in Libero to avoid skew surprises.
The 256-FBGA (17x17 mm) with 203 signal balls typically requires at least a 4-layer board with via-in-pad or dog-bone fanout on 0.8-1.0 mm ball pitch. Route the four quadrant clock inputs (A, B, C, D - bottom-left, bottom-right, top-left, top-right per the SX-A datasheet) as matched-length traces from a low-jitter source. Follow Microchip's SX-A PCB layout guidelines for the fine-pitch (GG) variants if footprint reuse is planned, since ball pitch may differ between FG and FGG packages.
Estimated: at a typical 20-50 MHz industrial design consuming roughly 300-500 mW core plus I/O power, junction rise in the 256-FBGA over a standard 4-layer board stays modest; the -55C to +125C M-grade rating gives wide margin. For high-utilization designs near 250 MHz, compute actual power with the Microchip SX-A power calculator and confirm junction temperature stays within the derated limit of the chosen temperature grade.
Compliance Information
RoHS3 compliant and lead-free per Microchip USA listing for the A54SX72A-1FGG256M variant of this package; REACH/halogen status not stated in provided data.
