A54SX72A-1FGG256 - 108K-Gate Antifuse FPGA, 256-FBGA | Microchip
MPN: A54SX72A-1FGG256 β Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
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Drop-in alternatives for A54SX72A-1FGG256 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX72A-2FGG256
β Drop-Inβ In Stock
$217.72 / Unit
View Datasheet βA54SX72A-1FGG256I
β Drop-Inπ Reference alternative (not in catalog)
A54SX72A-1FGG256M
β Drop-Inβ In Stock
$258.66 / Unit
View Datasheet βA54SX72A-1FGG256A
β Drop-Inπ Reference alternative (not in catalog)
A54SX72A-2FGG256I
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
A54SX72A-1FGG256 Maximum Ratings & Electrical Characteristics
| Family | SX-A (Actel/Microsemi antifuse FPGA) |
| System Gates | 108000 gates |
| Typical Gates | 72000 gates |
| Logic Cells | 4024 cells |
| Configurable Logic Blocks (CLBs) | 6036 |
| User I/O | 203 |
| Maximum System Frequency | 250 MHz |
| Process Technology | 0.25 um CMOS |
| Core Supply Voltage | 2.5 V |
| Programming Technology | Antifuse (one-time programmable) |
| Speed Grade | -1 |
| Operating Temperature | 0C to +70C (commercial) |
| Package | 256-FBGA (FPBGA-256, 17x17 mm) |
| Mounting Type | Surface Mount |
| Packaging | Tray |
A54SX72A-1FGG256 256-fbga (fpbga-256, 17x17 mm) Pin Configuration Guide
Complete pinout information for A54SX72A-1FGG256 (256-fbga (fpbga-256, 17x17 mm) package) with 256 pins. 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-1FGG256.
Refer to the datasheet for full pin configuration.
Estimated pin count: 256 pins (digital package)
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-1FGG256 is suitable for 6 applications: Industrial Control and Automation, Telecommunications and Networking Line Cards, Military and Aerospace Legacy Programs, Secure Glue-Logic Consolidation, Test and Measurement Instrument Logic, Legacy Board Sustainment and Obsolescence Management.
Industrial Control and Automation
Factory automation controllers, motor-control sequencers, and PLC I/O logic benefit from the A54SX72A-1FGG256's combination of 108,000 system gates and 203 user I/O, which allows multiple discrete logic, counters, and interface functions to be consolidated into one antifuse device. Its instant-on, non-volatile configuration means the control logic is active the moment power is applied - critical for machine safety interlocks that cannot wait for a configuration load cycle. The 250 MHz system capability comfortably covers industrial timing and encoding functions, and the 0C to +70C commercial rating suits cabinet-mounted electronics. Because the bitstream is burned into antifuse elements, it cannot be read back, protecting proprietary control IP on shared factory equipment.
Recommended
Telecommunications and Networking Line Cards
Line-card framing, multiplexing, and backplane-interface logic historically used the SX-A family for its fast, predictable antifuse routing. The A54SX72A-1FGG256 offers 108,000 system gates and 203 I/O in a space-efficient 17x17 mm 256-FBGA, enough to absorb EPLD glue logic plus channel-control functions while meeting line-card timing budgets at up to 250 MHz. The quadrant clock inputs (A, B, C, D per the Microchip SX-A datasheet) support clock domains spanning the four package quadrants, simplifying multi-clock telecom designs. Non-volatile configuration removes the boot PROM from the card, improving uptime in carrier equipment where every configuration device is a potential failure point.
Recommended
Military and Aerospace Legacy Programs
The SX-A family has a long heritage in defense and aerospace designs, and the A54SX72A-1FGG256M military-temperature variant remains a preferred sustainment path for legacy boards. Antifuse technology tolerates radiation effects better than SRAM configuration in many applications and is immune to configuration upsets of the bitstream storage, since the programmed interconnect is physical silicon. For programs maintaining an existing 256-FBGA board layout, the -1FGG256 and its M and I suffix variants are form-fit-function compatible, so the same footprint supports flight, industrial, and commercial builds. The 0.25 um process and 2.5V core also reduce dynamic power versus older 5V programmable logic.
Recommended
Secure Glue-Logic Consolidation
When a board combines address decoding, bus bridging, state machines, and interface adaptation, the A54SX72A-1FGG256 can integrate the whole cluster into one secure chip. Its 108,000 system gates and 4024 logic cells provide headroom, while 203 user I/O connect directly to microprocessor buses and peripherals. The antifuse bitstream cannot be dumped or cloned, so designs containing proprietary know-how - encryption glue, licensing logic, or custom bus protocols - gain real protection versus SRAM FPGAs whose configuration file is exposed in a flash device. Instant-on operation also means the glue logic is functional before a host processor completes boot, supporting power-fail and watchdog functions.
Recommended
Test and Measurement Instrument Logic
Bench instruments and automated test equipment use the A54SX72A-1FGG256 for timing generators, trigger engines, and bus-interface control. The deterministic antifuse routing gives repeatable delays between units, which matters for calibrated instruments where unit-to-unit timing skew must be bounded. With a 250 MHz system ceiling and 203 user I/O, the device handles counters, comparators, and interface state machines in a single 17x17 mm package, freeing board area for analog front ends. Its instant-on configuration lets the instrument's digital control plane be ready during power-up self-test, and the commercial 0C to +70C rating matches typical laboratory operating envelopes.
Recommended
Legacy Board Sustainment and Obsolescence Management
Programs supporting equipment designed around Actel/Microsemi SX-A FPGAs rely on parts like A54SX72A-1FGG256 to keep production lines alive. The verified distributor data shows active stocking at DigiKey, Mouser, Microchip USA, and Octopart-linked channels, making this one of the more procurable high-gate antifuse devices. Because the same 256-FBGA footprint is shared across -1, -2, I, and M suffixes, buyers can flex speed grade or temperature range to fill shortages without PCB rework - only reprogramming and timing re-verification are required. Last-time-buy planning should track Microchip lifecycle notices, and XAIPART quote channels can locate allocated stock during shortage windows.
Recommended
Recommended Products Summary
Engineering reference data for A54SX72A-1FGG256 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX72A-2FGG256 | A54SX72A-1FGG256I | A54SX72A-1FGG256M | A54SX72A-1FGG256A | A54SX72A-2FGG256I |
|---|---|---|---|---|---|---|
| Package | 256-FBGA (17x17 mm) | 256-FBGA - same | 256-FBGA - same | 256-FBGA - same | 256-FBGA - same | 256-FBGA - same |
| Brand | Microchip Technology (Microsemi/Actel) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 108000 | 108000 | 108000 | 108000 | 108000 | 108000 |
| User I/O | 203 | 203 | 203 | 203 | 203 | 203 |
| Speed Grade | -1 | -2 (faster) | -1 (same) | -1 (same) | -1 (same) | -2 (faster) |
| Operating Temperature | 0C to +70C | 0C to +70C | -40C to +85C | Military range | 0C to +70C | -40C to +85C |
| Core Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
| Max System Frequency | 250 MHz | 250 MHz (higher Fmax) | 250 MHz | 250 MHz | 250 MHz | 250 MHz (higher Fmax) |
| Programming Technology | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) |
Key Differentiators
- Non-volatile antifuse configuration with no boot device (vs SRAM-based FPGAs)
- Faster timing available without PCB change (vs A54SX72A-1FGG256I)
- Extended temperature coverage on the same footprint (vs A54SX72A-2FGG256)
- Trade-off: one-time programmability limits iteration (vs SRAM-based FPGAs)
Design Notes
The A54SX72A is one-time programmable: once antifuse elements are burned, the device cannot be erased or reprogrammed. Complete full functional simulation and static timing closure with the correct -1 speed-grade libraries before programming production units. Budget at least one engineering iteration - program a verification unit first, and only program final devices after board-level validation passes. Also remember the four quadrant clock pins (A, B, C, D per the SX-A datasheet) must be assigned to the correct package quadrants in your place-and-route constraints.
The core operates from a 2.5V supply (0.25 um process). Estimated: with 4024 logic cells and typical antifuse static current, static power is low compared to SRAM FPGAs since no configuration bitstream storage draws standby current; dynamic power scales with clock frequency and toggle rate. Provide a clean 2.5V rail with local 0.1 uF decoupling per power pin group plus bulk 10 uF capacitance, and follow the SX-A datasheet power-supply sequencing and I/O bank voltage requirements when mixing I/O standards.
The 256-ball FBGA (17x17 mm, 1.0 mm ball pitch class) requires a correctly dimensioned land pattern and via-in-pad or dog-bone fanout. Follow IPC-compliant BGA land patterns and inspect with X-ray after reflow since balls are hidden under the package. When substituting the I or M temperature variants on the same board, no layout change is needed - the ball map is identical - but confirm solder alloy and reflow profile match the temperature-grade package specification.
With 203 user I/O at up to 250 MHz internal operation, manage simultaneous switching noise by distributing ground return balls around high-activity I/O groups and matching trace impedance to the selected I/O standard. Use series termination on fast single-ended outputs and keep quadrant clock traces short and matched length across the A/B/C/D clock inputs to minimize skew between clock domains.
Compliance Information
Compliance status not captured in the verified web data. This is a legacy-oriented antifuse FPGA family; confirm RoHS/lead-free status via the Microchip product page or distributor certificate of conformance for the specific date code.
