A54SX72A-1CQ256B - 108K-Gate Antifuse FPGA | Microchip
MPN： A54SX72A-1CQ256B ✓ 啟用中A54SX72A-1CQ256B 概覽
An antifuse FPGA is a field-programmable gate array whose interconnect switches are permanently programmed once, rather than stored in configuration memory. In the programmable logic hierarchy, the SX-A sits under FPGA -> field-programmable logic -> programmable SoC/ASIC prototyping devices. Because the antifuse programming is non-volatile and inherently unalterable, these devices deliver ASIC-like security, instant power-up, and no external configuration PROM, making them a single-chip replacement for multi-chip glue-logic implementations.
Key features of the A54SX72A include the largest density in the SX-A family at 108K system gates, a sea-of-modules architecture with fine-grained logic modules, quadrant clocking resources (CLKA, CLKB and QCLK networks) that simplify large-design clock distribution, and a ceramic package suited to long-lifecycle and harsh-environment programs.
Architecturally, the SX-A uses a two-module logic cell (a C-cell for combinational logic and an S-cell for sequential elements), giving high effective logic utilization per gate. Routing is dominated by short and long antifuse interconnect segments, achieving fast, predictable delays suited to state machines, bus interfaces, and datapath functions.
Typical applications include industrial control and automation, communications and networking line cards, military and aerospace upgrades of legacy designs, and ASIC prototyping or bridge logic where single-chip integration reduces BOM cost.
Design-wise, program the device once and verify the fuse map in Libero SoC before programming, since antifuse programming is irreversible; budget I/O assignments across the four quadrants to use the quadrant clocks effectively.
This page adds value beyond the datasheet by consolidating distributor availability, same-package drop-in variants, and engineering design notes in one place.
直接替換替代品，適用於 A54SX72A-1CQ256B — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： A54SX72A-1CQ256B （相同外形與佔位） — 差異在於 Package, Family, System Gates, Process Technology, User I/O.
A54SX72A-1CQ256M
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-CQ256B
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-CQ256
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-CQ256M
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-CQ256B
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX72A-1CQ256B 最大額定值與電氣特性
| 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 |
| 封裝 | 256-BFCQFP with Tie Bar (CQ256) |
| Lead Pitch | 0.5 mm |
| 安裝類型 | 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) 腳位配置指南
A54SX72A-1CQ256B（256-bfcqfp with tie bar (cq256) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： A54SX72A-1CQ256B.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX72A-1CQ256B 適用於 6 應用s: 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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX72A-1CQ256B — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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) |
| 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 |
| 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) |
主要差異化特點
- Largest SX-A family density in ceramic package (對比A54SX32A-CQ256B)
- Faster -1 speed grade (對比A54SX72A-CQ256B)
- Instant-on non-volatile configuration with no external PROM (對比Modern SRAM FPGAs)
設計說明
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.
合規資訊
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.
