A54SX72A-FG256A - 108K Gate Antifuse FPGA 256-BGA | Microchip
MPN： A54SX72A-FG256A ✓ 啟用中A54SX72A-FG256A 概覽
An antifuse FPGA is a field-programmable gate array whose interconnect switches are programmed permanently by applying a programming voltage that forms a low-resistance link. Unlike SRAM-based FPGAs from Xilinx or Altera (now Intel), antifuse devices are non-volatile, one-time programmable, and require no configuration boot ROM, making the A54SX72A-FG256A a member of the broader hierarchy: FPGA -> programmable logic IC -> digital integrated circuit.
Key features include a 0.25 um CMOS process, single 2.5V core supply with 3.3V/2.5V/1.5V-selectable I/O support, TTL/LVTTL/LVCMOS2/3.3V PCI/5V PCI-compatible input levels, and quadrant clock inputs (CLKA-CLKD) feeding global clock distribution networks. The one-time-programmable antifuse fabric gives inherent design security because the programmed bitstream is not stored in an externally readable configuration memory.
Architecturally, the SX-A family uses a sea-of-modules structure with Combimodule (combinational + sequential) logic cells on a channeled routing fabric, balancing interconnect delay predictability with high logic density. The 217 MHz toggle capability suits timing-critical glue logic and datapath integration.
Typical applications include military and aerospace systems, industrial automation controllers, communications backplanes, and automotive electronics where non-volatile, single-chip, instant-on programmable logic is required. The A-grade temperature variant supports -40C to +125C ambient operation.
Design consideration: because the device is antifuse (one-time programmable), a robust simulation and back-annotation flow in Microchip Libero SoC is essential before programming; unused design iterations require a new device.
This page synthesizes distributor pricing context, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 A54SX72A-FG256A — 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-FG256A （相同外形與佔位） — 差異在於 Package, System Gates, Process Technology, Operating Temperature, Family.
A54SX72A-FGG256A
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-FG256
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-FG256I
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-FG256M
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-1FGG256
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-2FGG256
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-1FGG256M
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-FG256A 最大額定值與電氣特性
| Family | SX-A (Antifuse FPGA) |
| System Gates | 108000 gates (72000 typical) |
| Logic Cells (Modules) | 4024 cells |
| Configurable Logic Blocks | 6036 CLBs |
| Maximum System Frequency | 217 MHz |
| Process Technology | 0.25 um CMOS |
| Core Supply Voltage | 2.5 V |
| User I/O | 203 |
| Programmability Type | Antifuse (one-time programmable, non-volatile) |
| 封裝 | 256-Ball FBGA (17 x 17 x 1.97 mm) |
| 安裝類型 | Surface Mount |
| I/O Standards | TTL, LVTTL, LVCMOS2, 3.3 V PCI, 5 V PCI |
| Clocking | 4 quadrant clock inputs (CLKA, CLKB, CLKC, CLKD) |
| Temperature Grade | A (automotive, -40C to +125C) |
| Configuration Memory | Not required (non-volatile antifuse) |
| RoHS 狀態 | Compliant |
| Design Tools | Microchip Libero SoC |
A54SX72A-FG256A 256-ball fbga (17 x 17 x 1.97 mm) 腳位配置指南
A54SX72A-FG256A（256-ball fbga (17 x 17 x 1.97 mm) 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-FG256A.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX72A-FG256A 適用於 6 應用s: Aerospace and Defense Systems, Industrial Automation Controllers, Communications Backplanes and Networking, Automotive Electronic Control Units, Test and Measurement Instrumentation, Secure Embedded Control and Anti-Tamper Logic.
Aerospace and Defense Systems
The A54SX72A-FG256A fits aerospace and defense payloads where configuration security and instant-on operation are mandatory. Its antifuse fabric stores no readable bitstream, defeating bitstream-cloning attacks that threaten SRAM FPGAs, and its non-volatile programming eliminates configuration PROMs and their boot-time vulnerability window in systems subject to radiation and power-transient events. With 108,000 system gates and 217 MHz capability on a 0.25 um process, it integrates bus interfaces, glue logic, and datapath functions that would otherwise occupy multiple MIL-TEMP ASICs or discretes. The M and A temperature grades (-40C to +125C and beyond with screening) align with avionics environmental profiles. Designers typically instantiate quadrant clock networks (CLKA-CLKD) for multi-domain timing and verify all timing in Libero SoC before the irreversible antifuse programming step.
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Industrial Automation Controllers
In factory automation and industrial control, the A54SX72A-FG256A provides single-chip integration of PLC backplane logic, motion-control interface glue, and high-speed counter/timer functions with instant power-on behavior that SRAM FPGAs cannot deliver without external configuration. The 203 user I/Os supporting TTL, LVTTL, LVCMOS2, and 5 V PCI levels allow direct interfacing with legacy 5 V industrial buses and 3.3 V modern subsystems on the same device - a key advantage when modernizing equipment with mixed-voltage signaling. The 217 MHz fabric easily handles encoder interpolation and fieldbus arbitration at industrial clock rates, while the A temperature grade (-40C to +125C) covers unconditioned cabinet environments. Because the device is one-time programmable, designs should be fully validated in Libero SoC simulation before programming production units, and the FG256 FBGA's 17 x 17 mm footprint suits standard industrial SMT assembly.
推薦
Communications Backplanes and Networking
Telecommunications line cards and backplane controllers benefit from the A54SX72A-FG256A's quadrant clock architecture: four dedicated clock inputs (CLKA, CLKB, CLKC, CLKD) feed global clock distribution networks, letting one device serve up to four card-zone timing domains - the intended use per the Microchip SX-A datasheet and the A54SX72A quadrant clocks application note. The 3.3 V PCI and 5 V PCI I/O compliance enables direct attachment to legacy PCI backplanes and bridge ASICs without level-shifters, while 108,000 gates integrate arbitration, register files, and protocol glue logic at up to 217 MHz. Non-volatile antifuse programming means cards initialize immediately at slot power, critical for hot-swap and carrier-grade uptime requirements. Designers should budget 2.5 V core supply with adequate decoupling and verify I/O bank voltage selections in Libero SoC constraints.
推薦
Automotive Electronic Control Units
The A54SX72A-FG256A is purpose-suited to automotive ECU integration through its 'A' automotive temperature grade, rated -40C to +125C ambient per the SX-A datasheet ordering codes. Its non-volatile antifuse fabric powers up functional within microseconds of ignition switch-on - no configuration boot delay - which matters for time-critical functions such as sensor preprocessing, powertrain interface logic, and body-electronics arbitration. The 2.5 V core keeps dynamic power low for always-on battery-connected nodes, and the 3.3 V/5 V PCI and LVTTL I/O compliance interfaces directly with automotive-grade transceivers and sensors. With 72,000 typical gates, multiple legacy discrete logic functions consolidate into one 17 x 17 x 1.97 mm FBGA, cutting BOM count and solder-joint failure points. Programs requiring documented AEC-Q100 certification should confirm qualification scope directly with Microchip.
推薦
Test and Measurement Instrumentation
Bench and automated test instruments use the A54SX72A-FG256A to implement trigger engines, timing generators, and instrument bus glue logic where deterministic instant-on startup and fixed, repeatable timing are required. The antifuse routing fabric provides consistent interconnect delays from the first unit to the last - valuable for calibration across a production instrument fleet - while 217 MHz fabric speed and 6036 CLBs accommodate state machines, pattern generators, and capture pipelines. Quadrant clocks allow separate timing domains per instrument channel bank. The 3.3 V PCI/LVTTL I/O standards connect cleanly to GPIB, PCI, and PXI interface chipsets. Since the part is one-time programmable, instrument R&D teams typically prototype logic in simulation within Libero SoC and reserve programmed devices for validated builds, treating each antifuse device as a production commitment.
推薦
Secure Embedded Control and Anti-Tamper Logic
Designs that must protect algorithms from extraction choose the A54SX72A-FG256A because antifuse programming leaves no externally readable configuration image: unlike SRAM FPGAs whose bitstream is stored in a PROM and loaded at each power-up, the SX-A programmed state exists only as physical links inside the die. This makes the device a standard choice for anti-tamper wrappers, key-handling glue logic, and proprietary protocol implementations in commercial and government systems. The 108,000-gate capacity houses authentication state machines, bus encryption interfaces, and board-revision camouflage logic around a host processor, while instant-on operation closes the power-up configuration window that attackers exploit on SRAM architectures. Engineers should still apply board-level tamper countermeasures, since device security complements rather than replaces system-level protection practices.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX72A-FG256A — 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-FGG256A | A54SX72A-FG256I | A54SX72A-1FGG256 | A54SX72A-FG256M |
|---|---|---|---|---|---|
| Package | 256-Ball FBGA (17 x 17 x 1.97 mm) | 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 | 108000 (72000 typical) | 108000 (72000 typical) | 108000 (72000 typical) | 108000 (72000 typical) | 108000 (72000 typical) |
| Configurable Logic Blocks | 6036 CLBs | 6036 CLBs | 6036 CLBs | 6036 CLBs | 6036 CLBs |
| Temperature Grade | A (automotive, -40C to +125C) | A (automotive) | I (industrial, -40C to +85C) | Standard/commercial grade | M (military) |
| Speed Grade | Standard | Standard | Standard | Speed grade 1 (faster) | Standard |
| Maximum Frequency | 217 MHz | 217 MHz | 217 MHz | 217 MHz (speed-grade 1 exceeds base timing) | 217 MHz |
| Core Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
| User I/O | 203 | 203 | 203 | 203 | 203 |
主要差異化特點
- Non-volatile antifuse fabric with no readable configuration image (對比A54SX72A-FG256 (commercial grade, same die))
- Higher guaranteed timing performance at same footprint (對比A54SX72A-1FGG256)
- Lead-free package option within same family (對比A54SX72A-FGG256A)
- Cost advantage versus over-specified military screening (對比A54SX72A-FG256M)
設計說明
The A54SX72A-FG256A is one-time programmable: antifuse links are burned permanently at programming voltage via VPP pins. Complete full RTL simulation, synthesis timing analysis, and post-layout back-annotated timing verification in Libero SoC before generating the programming file. Every design change after programming consumes a new device - budget prototypes accordingly and maintain a golden design archive tied to each programmed lot to avoid configuration drift across production builds.
Supply the 2.5 V core and I/O bank rails (3.3 V/2.5 V/1.5 V per your I/O standard selection) with local bulk and 0.1 uF ceramic decoupling at the FBGA via field, following the SX-A datasheet power section. Note that the four VPP programming balls must be isolated from system rails on the PCB and routed only to the programming fixture, since programming voltage on these pins is destructive to normal logic - a frequent layout error when reusing generic FPGA footprints.
Use the quadrant clock inputs CLKA-CLKD for global clock distribution rather than routing clocks through general fabric, which the datasheet designates specifically for clock networks; this preserves deterministic skew across the 6036-CLB array. For 5 V PCI or 3.3 V PCI I/O groups, verify input-level compatibility (TTL/LVTTL/LVCMOS2/PCI are supported) and reference each I/O bank to its correct rail. Series-terminate long point-to-point signals on the FR-4 stackup to control reflections at 217 MHz-class edge rates.
合規資訊
Newark lists A54SX72A-FG256A as RoHS Compliant: Yes. The lead-free 'GG' package variant (A54SX72A-FGG256A) is available for green requirements. AEC-Q100 qualification status and REACH/halogen details should be confirmed with Microchip directly.
