A54SX72A-1FG256I - 72K Gate Antifuse FPGA 2.5V | Microchip
MPN: A54SX72A-1FG256I ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $186.5 | $186.50 |
| 10 | $171.2 | $1,712.00 |
| 100 | $158.4 | $15,840.00 |
| 500 | $147.9 | $73,950.00 |
| 1,000 | $138.6 | $138,600.00 |
Drop-in alternatives for A54SX72A-1FG256I — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX72A-1FGG256I
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View Datasheet →A54SX72A-1FG256M
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View Datasheet →A54SX72A-2FG256I
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View Datasheet →A54SX72A-2FGG256I
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View Datasheet →A54SX72A-1FGG256M
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View Datasheet →A54SX72A-1FG256I Maximum Ratings & Electrical Characteristics
| Family | SX-A (Antifuse FPGA) |
| System Gates | 108K |
| Logic Gates | 72K |
| Logic Cells (Modules) | 4024 |
| Maximum System Frequency | 250 MHz |
| Process Technology | 0.25um/0.22um CMOS |
| Supply Voltage (Core) | 2.5 V |
| Number of User I/O | 203 |
| Package | 256-ball FBGA (17x17x1.97 mm) |
| Programming Technology | Antifuse (one-time programmable) |
| Configuration | Non-volatile, no external boot device |
| Temperature Grade | Industrial (-40C to +85C) |
| Mounting Type | Surface Mount |
| Packaging | Tray |
| RoHS Status | Compliant |
A54SX72A-1FG256I 256-ball fbga (17x17x1.97 mm) Pin Configuration Guide
Complete pinout information for A54SX72A-1FG256I (256-ball fbga (17x17x1.97 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-1FG256I.
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-1FG256I is suitable for 6 applications: Aerospace and Avionics Logic Integration, Industrial Control and Automation, Secure Single-Chip System Integration, Bridge and Bus Interface Logic, Processor Support and System Glue Logic, Test and Measurement Instrumentation.
Aerospace and Avionics Logic Integration
The A54SX72A-1FG256I fits aerospace and avionics designs where configuration integrity is non-negotiable. Its antifuse fabric is one-time programmed, so the netlist cannot be read back, corrupted by SEU, or altered in flight - eliminating the configuration-upset failure mode that SRAM FPGAs must mitigate with triple-module redundancy and external configuration scrubbing. With 72K gates, 4024 cells, and quadrant clocking (CLKA, CLKB, QCLK), it integrates glue logic, bus interfaces, and control state machines that previously occupied multiple MIL-standard SSI/MSI devices, cutting board area, power, and qualification burden. The 2.5V core and 203 user I/O support legacy 3.3V/2.5V interface standards common in avionics backplanes. Design teams typically allocate the -1 speed grade for moderate-rate interfaces and step up to the -2 grade when static timing margins are tight.
Recommended
Industrial Control and Automation
In factory automation, motor-control interfaces, and PLC I/O subsystems, the A54SX72A-1FG256I provides instant-on programmable logic that is active the moment power is applied - no boot time, no configuration device, no field firmware corruption risk. Its 250 MHz capability comfortably covers industrial encoder interfaces, PWM generation, and interlock logic, while the industrial -40C to +85C temperature grade matches uncontrolled cabinet environments. The one-time-programmable fabric also acts as an anti-counterfeiting and tamper deterrent for proprietary control algorithms, since the programmed design physically exists in antifuse elements and cannot be dumped from a configuration memory. Integration of multiple discrete glue-logic functions into the single 256-ball FBGA reduces PCB layers and component count, which is often the dominant cost driver in high-volume industrial control boards.
Recommended
Secure Single-Chip System Integration
Where design IP must be protected from cloning, the A54SX72A-1FG256I is a strong fit: antifuse programming stores the design physically in silicon, so there is no bitstream to intercept on a configuration bus and no configuration memory to read out. This makes it suitable for security-critical bridges, authentication engines, and encryption key handling around secure processors. The 72K-gate capacity hosts AES/DES datapaths, interface state machines, and board-level trust logic concurrently, while 203 user I/O in the 256-ball FBGA connects to multiple bus domains. Compared with SRAM FPGA solutions that require encrypted bitstreams and battery-backed key storage - both attackable - the antifuse approach removes the attack surface entirely. Designers should note the one-time-programmable nature requires a frozen, fully verified netlist before production programming.
Recommended
Bridge and Bus Interface Logic
The A54SX72A-1FG256I serves as a protocol bridge between mismatched bus domains - for example PCI-to-local-bus, VME slave interfaces, or microprocessor-to-FIFO glue - where 250 MHz internal capability and deterministic, instant-on behavior are required. Its sea-of-modules fabric handles both combinational decoding and registered pipeline stages, and quadrant clock networks let designers run independent clock domains for each bus side without global clock contention. The 203 user I/O supports wide parallel buses (32/64-bit) with 2.5V-compatible I/O in the 256-ball FBGA footprint. Because there is no configuration load time, the bridge is functional within nanoseconds of power application, critical in backplane systems where other boards expect immediate bus participation. Timing closure at the -1 speed grade should be verified with Microchip static timing tools for the target bus frequencies.
Recommended
Processor Support and System Glue Logic
Legacy and embedded processor systems often need address decoding, interrupts, DMA handshake, wait-state generation, and reset supervision consolidated into one programmable device. The A54SX72A-1FG256I handles this with 72K gates of usable capacity while its antifuse fabric guarantees the decode logic is present at every power cycle - important for processors that fetch from flash immediately at reset. The 0.25um/0.22um 2.5V process keeps static power low, an advantage in always-on or battery-buffered control planes. In cost terms, replacing dozens of 74-series devices with one FBGA reduces board area, assembly steps, and failure points. The industrial temperature grade and tray packaging suit both prototyping and mid-volume production. Design reuse between the FG256 and FG484 pinout variants allows a single design to serve multiple board sizes.
Recommended
Test and Measurement Instrumentation
Instrument backplanes, trigger engines, and timing generators benefit from the A54SX72A-1FG256I's deterministic instant-on configuration and 250 MHz internal capability. In counters, data-acquisition front ends, and protocol analyzers, the FPGA implements trigger comparators, timestamp counters, and bus interfaces in one chip, while antifuse determinism guarantees identical timing behavior unit-to-unit - valuable for calibrated instruments where SRAM FPGA routing variation and configuration-state dependence complicate calibration. The 4024-cell fabric with quadrant clocks supports multichannel, phase-aligned timing generators, and the industrial temperature rating covers bench-to-field deployment. Since the configuration is permanent, instruments power up directly into a known operational state, eliminating boot-time logic that could produce spurious output signals at turn-on - a frequent complaint with SRAM-based FPGA instruments.
Recommended
Recommended Products Summary
Engineering reference data for A54SX72A-1FG256I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX72A-1FGG256I | A54SX72A-1FG256M | A54SX72A-2FG256I | A54SX72A-2FGG256I |
|---|---|---|---|---|---|
| Package | 256-ball FBGA | 256-ball FBGA - same | 256-ball FBGA - same | 256-ball FBGA - same | 256-ball FBGA - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 108K (72K gates) | 108K (72K gates) | 108K (72K gates) | 108K (72K gates) | 108K (72K gates) |
| Logic Cells | 4024 | 4024 | 4024 | 4024 | 4024 |
| Speed Grade | -1 (standard) | -1 (standard) | -1 (standard) | -2 (faster) | -2 (faster) |
| Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
| Temperature Range | Industrial (-I) | Industrial (-I) | Military (-M) | Industrial (-I) | Industrial (-I) |
| Lead-Free / RoHS | Standard (FG) | Lead-free (FGG), RoHS compliant | Standard (FG) | Standard (FG) | Lead-free (FGG), RoHS compliant |
Key Differentiators
- Instant-on antifuse configuration with no boot device (vs A54SX72A-2FG256I)
- RoHS upgrade path without redesign (vs A54SX72A-1FGG256I)
- Cost-optimized speed grade (vs A54SX72A-2FG256I)
Design Notes
The A54SX72A is one-time programmable: once antifuse elements are blown, the device cannot be erased or reprogrammed. Complete static timing analysis, simulation, and functional verification in the Libero/Designer flow before submitting to programming. Reserve engineering-space prototype devices for iterations and only program production-verified netlists into the -1 industrial grade parts. Also confirm speed-grade binning matches your timing constraints - a -1 part will not close timing designed for a -2 grade.
The A54SX72A operates from a 2.5V core supply (VCCA/VCCI domains per the SX-A datasheet). Decouple each supply ball pair with low-ESR ceramic capacitors placed close to the package, typically 0.1uF per supply pin plus bulk capacitance at the board level. Because antifuse FPGAs draw no configuration current at power-up, inrush is governed only by I/O loading - but verify the power rail ramp rate against datasheet power-up requirements to avoid latch-up conditions on mixed 3.3V/2.5V I/O banks.
With 203 user I/O on a 1.0 mm-pitch 256-ball FBGA (17x17 mm body), plan breakout routing early: fan out inner balls with via-in-pad or dogleg escapes on a minimum 4-layer stack. Use the quadrant clock networks (CLKA, CLKB, QCLK) documented in Microchip's quadrant clock application notes to keep per-domain clock skew low; assigning clocks to the nearest quadrant reduces routing delay variation across wide buses. Reference planes should be solid under high-speed I/O to control impedance.
Compliance Information
Newark lists the A54SX72A-1FG256I as RoHS Compliant: Yes. For lead-free ball metallurgy, the A54SX72A-1FGG256I variant is the RoHS-dedicated part number per Newark and Microchip USA listings. REACH, halogen-free, and conflict-minerals status not stated in provided data.
