A54SX72A-1CQ256B - 108K-Gate Antifuse FPGA | Microchip
MPN: A54SX72A-1CQ256B ✓ Active| Qty | Unit Price | Extended |
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Drop-in alternatives for A54SX72A-1CQ256B — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX72A-1CQ256M
✅ Drop-In✓ In Stock
$6.4 / Unit
View Datasheet →A54SX72A-CQ256B
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$228 / Unit
View Datasheet →A54SX72A-CQ256
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$196 / Unit
View Datasheet →A54SX72A-CQ256M
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$2429.15 / Unit
View Datasheet →A54SX32A-CQ256B
✅ Drop-In📋 Reference alternative (not in catalog)
A54SX72A-1CQ256B Maximum Ratings & Electrical Characteristics
| Family | SX-A (Antifuse FPGA) |
| System Gates | 108,000 |
| Logic Array Blocks (LABs) / CLBs | 6,036 |
| Programmable I/O | 203 |
| Supply Voltage Range | 2.25 V to 5.25 V |
| Package | 256-BFCQFP with Tie Bar (CQ256) |
| Lead Pitch | 0.5 mm |
| Mounting Type | Surface Mount |
| Programming Technology | Antifuse (one-time programmable, non-volatile) |
| Clocking Resources | CLKA, CLKB and quadrant clock (QCLK) networks |
| Configuration | Self-contained (no external configuration device required) |
| Speed Grade | -1 |
A54SX72A-1CQ256B 256-bfcqfp with tie bar (cq256) Pin Configuration Guide
Complete pinout information for A54SX72A-1CQ256B (256-bfcqfp with tie bar (cq256) 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-1CQ256B.
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-1CQ256B is suitable for 6 applications: Industrial Control and Automation, Communications and Networking Line Cards, Military and Aerospace Legacy System Upgrades, ASIC Prototyping and Bridge Logic, Test and Measurement Instrumentation, Single-Chip Glue Logic Integration.
Industrial Control and Automation
The A54SX72A-1CQ256B suits industrial control and factory automation systems that glue together PLC backplanes, motor-control interfaces, and legacy bus logic. Its 108K system gates and 6,036 LABs absorb dozens of discrete 74xx functions into one chip, cutting board area and assembly cost, while the 2.25V to 5.25V supply range tolerates noisy industrial 3.3V rails. The 203 programmable I/O pins drive status, sensing, and actuator interfaces, and the instant-on antifuse configuration means control logic is live the moment power is applied - critical for safety interlocks. Designers should verify I/O standards and budget quadrant clock resources for the main control state machine timing closure.
Recommended
Communications and Networking Line Cards
In telecommunications and networking line cards, the A54SX72A-1CQ256B implements bridge logic, bus arbitration, framing glue, and backplane interfaces where deterministic, predictable delays matter. The 108K-gate capacity handles multi-protocol glue blocks, and the CLKA/CLKB global clocks plus quadrant QCLK networks distribute timing domains across the die with low skew - useful for dense I/O regions on a 256-pin package with 203 user I/O. Because the antifuse bitstream is programmed once and cannot be read back, the device hardens designs against firmware cloning on deployed networking equipment. Verify I/O timing against the -1 speed grade tables in the SX-A datasheet during Libero timing closure.
Recommended
Military and Aerospace Legacy System Upgrades
The ceramic BFCQFP package with tie bar and one-time-programmable antifuse fabric make the A54SX72A-1CQ256B a natural fit for defense and aerospace programs sustaining legacy designs originally built on Actel SX-A devices. Instant power-up eliminates configuration-time windows in flight-critical sequencing, and the non-volatile, non-readable configuration supports anti-tamper requirements. The 108K-gate density replaces large quantities of obsolete TTL glue in avionics interface adapters, and Microchip's long-lifecycle support of the ceramic-packaged SX-A family reduces obsolescence risk. Space-grade companion RT54SX72S and military 5962-0054302QXC SMD variants exist for qualified programs.
Recommended
ASIC Prototyping and Bridge Logic
Engineers use the A54SX72A-1CQ256B to prototype ASIC control logic and to provide bridge logic between incompatible buses during system bring-up. The fine-grained SX-A cell architecture (C-cell plus S-cell modules) maps state machines and datapath control efficiently, and 108K system gates accommodate moderate RTL blocks for functional validation. Because the antifuse fabric delivers ASIC-like fixed routing delays after programming, prototype timing behavior is stable across units - unlike SRAM FPGA re-route variance. Plan I/O assignment and quadrant clock usage before programming, since antifuse programming is irreversible; any functional change requires a new programmed device.
Recommended
Test and Measurement Instrumentation
Bench and automated test equipment benefit from the A54SX72A-1CQ256B as timing-controller and trigger-logic fabric: instant-on configuration means the instrument is operational immediately at power-up with no configuration boot delay, and deterministic post-programming delays simplify trigger-path timing budgets. The 203 user I/O pins connect front-panel indicators, measurement sequencers, and backplane control signals, while the 5.25V-tolerant supply range eases integration in instruments still running 5V or 3.3V legacy rails. The ceramic package improves reliability in thermally cycling bench environments. Partition trigger logic into a single quadrant clock domain to minimize skew.
Recommended
Single-Chip Glue Logic Integration
The core SX-A value proposition, as Microchip states, is system-wide savings from integrating multiple functions into a low-cost, single-chip solution. Designs carrying dozens of legacy PALs, GALs, or 74-series devices can consolidate address decoders, bus transceivers, wait-state generators, and interrupt controllers into one A54SX72A-1CQ256B, cutting BOM count, board area, and assembly cost while improving mean time between failures. The antifuse fabric programs once and never loses configuration, eliminating configuration PROMs and their power-up sequencing risk. Retarget legacy schematics through Libero SoC and verify timing at the -1 speed grade before committing production programming.
Recommended
Recommended Products Summary
Engineering reference data for A54SX72A-1CQ256B — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX72A-1CQ256M | A54SX72A-CQ256B | A54SX72A-CQ256 | A54SX72A-CQ256M | A54SX32A-CQ256B |
|---|---|---|---|---|---|---|
| Package | 256-BFCQFP with Tie Bar (CQ256) | 256-BFCQFP - same | 256-BFCQFP - same | 256-BFCQFP - same | 256-BFCQFP - same | 256-BFCQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 108,000 | 108,000 | 108,000 | 108,000 | 108,000 | 36,000 (SX32A class) |
| LABs / CLBs | 6,036 | 6,036 | 6,036 | 6,036 | 6,036 | [DATA_NEEDED] |
| Programmable I/O | 203 | 203 | 203 | 203 | 203 | [DATA_NEEDED] |
| Supply Voltage | 2.25 V to 5.25 V | 2.25 V to 5.25 V | 2.25 V to 5.25 V | 2.25 V to 5.25 V | 2.25 V to 5.25 V | 2.25 V to 5.25 V |
| Speed Grade | -1 | -1 | Standard | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Programming Technology | Antifuse (one-time, non-volatile) | Antifuse (one-time, non-volatile) | Antifuse (one-time, non-volatile) | Antifuse (one-time, non-volatile) | Antifuse (one-time, non-volatile) | Antifuse (one-time, non-volatile) |
Key Differentiators
- Largest SX-A family density in ceramic package (vs A54SX32A-CQ256B)
- Faster -1 speed grade (vs A54SX72A-CQ256B)
- Instant-on non-volatile configuration with no external PROM (vs Modern SRAM FPGAs)
Design Notes
Antifuse programming is irreversible. Before sending the device to the programmer, run full functional simulation and timing analysis in Microchip Libero SoC and generate the fuse map for the -1 speed grade. A functional change requires an entirely new programmed device - budget inventory accordingly for design iterations. Verify that the programmer algorithm and programming voltage match the SX-A specification; an incorrect programming profile permanently damages the die.
The A54SX72A accepts a wide 2.25V to 5.25V single supply, but note that core and I/O power are derived on-die in the SX-A architecture. Decouple the VCC pins on the CQ256 package with at least 0.1uF per supply pin pair plus bulk capacitance near the package, per standard Microchip SX-A reference designs. Confirm I/O voltage compatibility with neighboring devices: the die tolerates the 5.25V upper bound, but board-level interface standards must be validated against datasheet I/O characteristics.
Use the CLKA and CLKB global clock networks for primary system clocks and assign localized high-speed registers into quadrants using the QCLK resources, following Microchip application notes on A54SX72A quadrant clocks. Placing register-heavy logic within the quadrant served by its clock minimizes skew. Distribute 203 I/O pins across quadrants to avoid routing congestion, and review post-layout timing reports against the -1 speed grade tables in the SX-A family datasheet before programming.
Compliance Information
Compliance data not stated in provided distributor listings; ceramic BFCQFP packaging targets military/industrial programs where exemptions may apply. Verify environmental data on the Microchip product page for this exact MPN.
