A54SX72A-FGG256I - 108K-Gate Antifuse FPGA, 203 I/O | Microchip
MPN: A54SX72A-FGG256I ✓ Active| Qty | Unit Price | Extended |
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Drop-in alternatives for A54SX72A-FGG256I — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX72A-1FGG256I
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A54SX72A-1FGG256
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View Datasheet →A54SX72A-2FGG256
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$217.72 / Unit
View Datasheet →A54SX72A-FGG256M
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$136 / Unit
View Datasheet →A54SX72A-FG256
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$89 / Unit
View Datasheet →A54SX72A-1FGG256M
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$258.66 / Unit
View Datasheet →A54SX72A-FGG256I Maximum Ratings & Electrical Characteristics
| Family | SX-A (antifuse FPGA) |
| System Gates | 108000 gates |
| Logic Cells (CLBs) | 6036 |
| User I/O | 203 |
| Supply Voltage (Core) | 2.5 V |
| Programming Type | Antifuse (one-time programmable) |
| Process Technology | 0.25 um CMOS |
| Maximum Toggle/System Frequency | up to 217 MHz (speed-grade dependent) |
| Package | 256-ball FBGA (FGG256), 1.0 mm pitch |
| Mounting Type | Surface Mount |
| Temperature Grade | Industrial (-I suffix) |
| Operating Temperature | -40C to +85C |
| Configuration Storage | Nonvolatile (no external boot device required) |
| Clock Networks | CLKA, CLKB, and quadrant clocks (QCLK) |
| RoHS Status | Compliant |
| Ball Pitch | 1 mm |
A54SX72A-FGG256I 256-ball fbga (fgg256), 1.0 mm pitch Pin Configuration Guide
Complete pinout information for A54SX72A-FGG256I (256-ball fbga (fgg256), 1.0 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 A54SX72A-FGG256I.
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-FGG256I is suitable for 6 applications: Industrial Control and Automation, Communications and Networking Equipment, Military and Aerospace Logic Replacement, ASIC Prototyping and Bridge Logic, Obsolescence-Driven Redesign, Secure Embedded Systems.
Industrial Control and Automation
The A54SX72A-FGG256I fits industrial controllers that need deterministic, instant-on logic without configuration boot time. Its nonvolatile antifuse fabric powers up with logic active immediately, an advantage over SRAM FPGAs that must reload bitstreams from external flash on every power cycle - critical for machine safety interlocks and factory automation sequences. With 108K system gates and 203 user I/O, it integrates bus interfaces, sequencers, and I/O expansion glue logic that previously required multiple CPLDs or ASICs, cutting BOM cost. The industrial -40C to +85C grade of the -I suffix matches plant-floor temperature envelopes, and the 256-ball 1.0 mm-pitch FBGA suits compact PLC and motor-control boards where a 2.5V core rail is readily derived from standard 3.3V/5V system supplies.
Recommended
Communications and Networking Equipment
Line cards, backplane interfaces, and telecom control planes benefit from the A54SX72A-FGG256I's combination of 108K gates, 203 user I/O, and quadrant clock resources (CLKA, CLKB, QCLK) that support multiple synchronous domains typical of networking hardware. Family data reports system performance up to 217 MHz depending on speed grade, sufficient for bus bridging, framing, and packet-routing glue logic. The antifuse fabric's low static power from the 2.5V 0.25 um process reduces card-level thermal load in high-density chassis. Configuration immutability also protects firmware IP in deployed telecom equipment, since the programmed netlist cannot be read back. Designers should confirm timing closure at standard grade and select the -1 speed grade variant, which is pin-compatible on the same PCB, if critical paths exceed budget.
Recommended
Military and Aerospace Logic Replacement
The SX-A family has a long heritage in defense electronics, and the A54SX72A-FGG256I serves programs needing secure, radiation-tolerant-behavior-prone antifuse logic at 108K-gate density. Antifuse interconnect is inherently more robust against configuration upsets than SRAM cells and cannot be cloned by bitstream readback, addressing two recurring concerns in military platforms. The military-grade sibling A54SX72A-FGG256M shares the same die and footprint for extended-temperature builds, while the industrial -I version suits less severe environments. With 203 user I/O and nonvolatile configuration, it consolidates legacy MCM, PAL, and ASIC functions into a single verified device. Note the RT54SX72S radiation-tolerant variant exists separately for space programs and must be selected through formal program qualification.
Recommended
ASIC Prototyping and Bridge Logic
Before committing to an ASIC tape-out, the A54SX72A-FGG256I provides a 108K-gate fabric for prototyping control-plane logic, verifying RTL behavior in-system at moderate speeds. Its one-time programmability mirrors ASIC immutability, encouraging the same rigorous simulation sign-off discipline required for hard IP. As bridge and glue logic on mixed-vendor boards, the 203 user I/O accommodates wide parallel buses between processors, memories, and peripherals, while quadrant clocks isolate timing domains. Because the configuration is nonvolatile, prototype boards power up functional without programming cables or boot devices, simplifying demonstration hardware. When prototyping reveals a need for reconfiguration iterations, designers typically program multiple devices rather than reusing one, so unit cost should be budgeted accordingly in prototype planning.
Recommended
Obsolescence-Driven Redesign
Many designs adopt the A54SX72A-FGG256I when older Actel SX/SX-L or discontinued ASIC/CPLD logic must be replaced. The SX-A family remains an active Microchip product line, making it a forward-compatible consolidation target: legacy netlists port into the same Actel-derived architecture and design flow, and Microchip application notes (including those on A54SX72A quadrant clocks) support migration. With 108K gates and 203 user I/O, one device frequently replaces several obsolete PLDs, shrinking board area and inventory complexity. Because the antifuse fabric is one-time-programmable, replacement stock can be programmed and banked as trusted spares without worrying about configuration-storage aging. Pin-compatible speed-grade variants (standard, -1, -2) let one PCB footprint absorb future timing upgrades without respin.
Recommended
Secure Embedded Systems
Applications handling sensitive algorithms - encryption key management, authentication logic, proprietary protocol engines - use the A54SX72A-FGG256I because antifuse configuration cannot be read back after programming, unlike SRAM FPGA bitstreams. The nonvolatile fabric also starts instantly with logic active, eliminating the window during which an SRAM device waits for configuration. At 108K gates and 203 user I/O, entire security pipelines fit alongside host interface logic in one 2.5V device, reducing the physical attack surface relative to multi-chip solutions. The industrial -I temperature grade suits outdoor and uncontrolled-environment installations. Designers should combine the device's inherent immutability with board-level measures such as power-rail monitoring and I/O filtering, since security depends on the complete system, not the FPGA alone.
Recommended
Recommended Products Summary
Engineering reference data for A54SX72A-FGG256I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX72A-1FGG256I | A54SX72A-FGG256M | A54SX72A-2FGG256 |
|---|---|---|---|---|
| Package | 256-ball FBGA (FGG256) | 256-ball FBGA (FGG256) - same | 256-ball FBGA (FGG256) - same | 256-ball FBGA (FGG256) - same |
| Brand | Microchip Technology (Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 108000 | 108000 | 108000 | 108000 |
| User I/O | 203 | 203 | 203 | 203 |
| Speed Grade | Standard | -1 (faster) | Standard | -2 (fastest) |
| Temperature Grade | Industrial (-I) | Industrial (-I) | Military (-M) | Commercial |
| Core Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
| Programming Technology | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) |
| Unit Price | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Industrial temperature grade for plant-floor environments (vs A54SX72A-FGG256)
- Standard speed grade minimizes cost with full timing margin headroom (vs A54SX72A-1FGG256I)
- Commercial-grade availability for benign lab and office deployments (vs A54SX72A-FGG256M)
Design Notes
The A54SX72A-FGG256I operates from a 2.5V core supply on a 0.25 um antifuse process; I/O bank supply requirements are given in the SX-A family datasheet. Because antifuse fabric is nonvolatile and static power is low, the dominant design task is ensuring a clean, well-decoupled 2.5V rail: place bulk and 0.1 uF ceramic decoupling capacitors at the package power/ground ball pairs per the datasheet FGG256 ball map. Estimate rail current from post-place-and-route power analysis in the Microchip toolchain rather than from generic figures, since utilization strongly affects consumption.
This is a one-time-programmable device - a programming error consumes the part. Complete functional simulation, static timing analysis, and pin-assignment review before programming, and reserve engineering spare units. Also verify speed-grade ordering when substituting: the -1 and -2 grades are faster than standard, so a design closed at standard grade runs on any higher grade, but never substitute a slower or commercial-temperature part into an industrial application. Confirm the exact suffix (FGG256I vs FGG256 vs FGG256M) on purchase orders.
The FGG256 package uses a 1.0 mm ball pitch requiring fine-pitch BGA assembly: specify solder paste printing inspection and X-ray post-reflow inspection in the assembly process. Follow the recommended FGG256 land pattern from the SX-A family datasheet, and route the dedicated clock balls (CLKA, CLKB, QCLK per Microchip quadrant clock application notes) with controlled-length, low-crosstalk traces. Avoid routing high-speed signals under the package center where possible to simplify rework and improve signal integrity.
Compliance Information
FindIC and distributor listings describe A54SX72A-FGG256I as ROHS COMPLIANT (PBGA256 package). REACH, lead-free, and halogen-free declarations should be confirmed from the official Microchip product page material declarations.
