A54SX32A-FGG256A - 48K Gate SX-A FPGA 256-BGA | Microchip
MPN： A54SX32A-FGG256A ✓ 啟用中A54SX32A-FGG256A 概覽
A field-programmable gate array (FPGA) is an integrated circuit that implements user-defined digital logic through a configurable fabric of logic blocks and programmable interconnect. The SX-A family uses Actel's antifuse programming technology, in which one-time programmable interconnect elements are permanently set at programming time, in a so-called sea-of-modules architecture that tiles the die with combinatorial cells (C-cells) and register cells (R-cells) with virtually no chip area lost to routing.
Key features of the A54SX32A include a sea-of-modules architecture delivering high gate utilization, antifuse one-time-programmable interconnect that is inherently non-volatile and resistant to configuration readback (a security benefit versus SRAM FPGAs), low static power consumption, and a fine-pitch 256-ball BGA that saves board area. The device integrates multiple glue-logic functions into a single low-cost chip, reducing BOM cost and board space compared with multi-chip TTL/CPLD solutions.
Architecturally, the SX-A fabric provides high-speed combinatorial logic through C-cells and dense sequential logic through R-cells, with segment-based routing that supports system clock rates up to several hundred megahertz depending on speed grade. The 'A' speed grade is the standard-timing member of the A54SX32A family; -1 and -2 speed grades offer faster combinatorial delays for higher clock frequencies.
Typical applications include industrial control and automation, telecommunications and networking line cards, aerospace and defense systems where one-time programmability and configuration security matter, medical instrumentation, and legacy system sustainment where the A54SX32A replaces multiple ASIC/SSI/MSI devices.
Design consideration: because antifuse devices are one-time programmable, verify the design thoroughly in simulation before programming production units, and plan I/O assignments early since the 256-ball BGA footprint is fixed.
This page synthesizes distributor pricing, drop-in family alternatives, design notes, and application guidance not found in the manufacturer datasheet, with data verified as of 2026-09-03.
直接替換替代品，適用於 A54SX32A-FGG256A — 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： A54SX32A-FGG256A （相同外形與佔位） — 差異在於 Package, System Gates, Operating Temperature, Family, RoHS Status.
A54SX32A-1FGG256A
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX32A-1FGG256I
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-2FGG256I
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-1FGG256
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-FGG256
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX32A-1FGG256M
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-FGG256A 最大額定值與電氣特性
| Family | SX-A (Actel antifuse FPGA) |
| System Gates | 48000 gates |
| Typical Gates | 32000 gates |
| Register Cells (R-cells) | 2880 |
| User I/O | 203 |
| Supply Voltage (VCC) | 2.25 V to 2.75 V |
| Programming Technology | Antifuse (one-time programmable) |
| Speed Grade | Standard (A) |
| 工作溫度 | -40C to +125C |
| 安裝類型 | Surface Mount (SMD/SMT) |
| 封裝 | 256-BGA (FGG256), fine-pitch |
| Architecture | Sea-of-modules (C-cells and R-cells) |
| Non-volatile Configuration | Yes (antifuse, no external boot PROM) |
| Lead Free | Yes |
| RoHS 狀態 | Compliant |
A54SX32A-FGG256A 256-bga (fgg256), fine-pitch 腳位配置指南
A54SX32A-FGG256A（256-bga (fgg256), fine-pitch 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： A54SX32A-FGG256A.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX32A-FGG256A 適用於 6 應用s: Industrial Control and Automation, Aerospace and Defense Systems, Telecommunications and Networking Line Cards, Medical Instrumentation, Legacy System Sustainment and BOM Consolidation, Secure Boot and Data-Acquisition Control.
Industrial Control and Automation
The A54SX32A-FGG256A fits industrial control and factory automation systems that need deterministic glue logic, state machines, and interface bridging on a single chip. Its 48,000 system gates and 2,880 R-cells consolidate PLC I/O decoding, backplane interfacing, and sequencing logic that would otherwise occupy multiple CPLDs or hundreds of TTL devices. The 2.25-2.75 V core supply with low static power keeps cabinet thermal budgets manageable, while the -40C to +125C operating range tolerates harsh floor environments near drives and motors. Because the antifuse fabric is one-time programmed, deployed controllers boot instantly with no configuration device to fail, improving line availability. Place it between fieldbus PHYs and the main processor with the 203 user I/Os handling parallel data, address decoding, and handshaking at multi-tens-of-MHz speeds.
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Aerospace and Defense Systems
Aerospace and defense designers select the A54SX32A-FGG256A where configuration security and instant-on behavior are mandatory. The antifuse interconnect cannot be read back, so the implemented bitstream resists reverse engineering - a decisive advantage over SRAM FPGAs whose configuration files are exposed in external memories. The device powers up functional within microseconds with no boot PROM, suiting avionics modules, secure communications equipment, and satellite payload logic that must be live at power application. The extended -40C to +125C range and radiation-tolerant heritage of the Actel antifuse process support demanding environmental profiles, and the 256-ball BGA provides mechanical robustness under vibration. Typical uses include bus bridging (MIL-STD-1553 companion logic), telemetry formatting, and flight-critical state machines validated once and programmed permanently.
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Telecommunications and Networking Line Cards
In telecom and networking equipment, the A54SX32A-FGG256A implements line-card glue logic: frame formatting, backplane handshaking, LED drive sequencing, and address decode between PHY devices and network processors. The SX-A sea-of-modules fabric delivers C-cell/R-cell timing that supports system speeds up to 278 MHz on the -1 speed grade, comfortably covering T1/E1, SONET-overhead-adjacent, and backplane control paths. The 203 user I/Os accommodate wide parallel buses to switch fabric and processor interfaces, while the low static power of antifuse technology keeps dense shelf-level power budgets in check across dozens of cards. Because the configuration is fixed at programming, cards power up and pass traffic immediately - valuable in carrier equipment where boot delay translates to outage. The FGG256 BGA suits the fine-pitch, high-density layouts of modern line cards.
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Medical Instrumentation
Medical diagnostic and monitoring instruments benefit from the A54SX32A-FGG256A's deterministic, permanently programmed control logic. Patient-interface subsystems require precise timing for sensor multiplexing, acquisition-window generation, and front-end ADC control; the FPGA's R-cells provide registered timing with no configuration-load uncertainty, and the one-time-programmable fabric eliminates configuration-corruption faults over the instrument's service life - a consideration for devices subject to regulatory design controls. The 48,000-gate capacity implements acquisition sequencers, filter control, and interface logic to the host processor, while the 2.25-2.75 V supply and low static current reduce heat inside enclosed benchtop or portable housings. The FGG256 fine-pitch BGA supports the compact board areas of handheld diagnostic heads, and the wide temperature range accommodates autoclave-adjacent environments.
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Legacy System Sustainment and BOM Consolidation
The A54SX32A-FGG256A is a workhorse for legacy system sustainment: programs originally designed around Actel SX, SX-A, or multiple discrete logic devices can consolidate or replace failing silicon without board redesign, because the SX-A family has remained in production with Microchip. Its 48,000 system gates absorb ASIC replacement, obsolete-CPLD migration, and TTL consolidation, cutting BOM count and qualification burden. The antifuse fabric means the programmed design is frozen exactly as qualified - no firmware drift, no configuration device obsolescence - which simplifies configuration-management audits. Distributor listings show continued availability (with lead times up to 12 weeks), so sustainment teams should place factory orders aligned to maintenance schedules. Same-footprint speed/temperature variants allow lifetime buys across grades on one PCB layout.
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Secure Boot and Data-Acquisition Control
Data-acquisition and control systems that demand tamper-resistant logic use the A54SX32A-FGG256A as the configuration hub between analog front ends and host processors. Because the antifuse bitstream resides inside the die and cannot be dumped, proprietary acquisition algorithms and interface protocols implemented in the fabric are protected against extraction - unlike SRAM FPGAs that load plaintext configuration from external flash at every power-up. The device's 203 I/Os sequence ADCs, control gain stages, and timestamp events with registered precision, while the 2.5 V core keeps overall rail count low. Instant-on operation means the acquisition chain is armed before the host OS finishes booting, capturing events that software-controlled FPGAs would miss. Antifuse programming also removes the external configuration memory from the trusted-computing baseline.
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推薦產品摘要
工程參考資料，適用於 A54SX32A-FGG256A — 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 | A54SX32A-1FGG256A | A54SX32A-1FGG256I | A54SX32A-2FGG256I | A54SX32A-FGG256 |
|---|---|---|---|---|---|
| Package | 256-BGA (FGG256) | 256-BGA (FGG256) - same | 256-BGA (FGG256) - same | 256-BGA (FGG256) - same | 256-BGA (FGG256) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 48000 | 48000 | 48000 | 48000 | 48000 |
| User I/O | 203 | 203 | 203 | 203 | 203 |
| Speed Grade | Standard (A) | -1 (up to 278 MHz system speed) | -1 | -2 (fastest) | Standard (A) |
| Supply Voltage | 2.25 V to 2.75 V | 2.25 V to 2.75 V | 2.25 V to 2.75 V | 2.25 V to 2.75 V | 2.25 V to 2.75 V |
| Programming Technology | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) |
主要差異化特點
- Fastest timing at the same footprint (對比A54SX32A-FGG256A)
- Configuration security over SRAM FPGAs (對比Comparable SRAM FPGAs (e.g., Xilinx Spartan-class))
- Industrial temperature with maximum speed (對比A54SX32A-2FGG256I)
設計說明
Provide a clean 2.5 V core rail regulated within the 2.25 V to 2.75 V window. Although SX-A antifuse devices draw very low static current, dynamic current scales with clock frequency and toggle rate; size the regulator using Libero power estimation for your design, then derate 30%. Decouple each VCC ball with 0.1 uF ceramics placed on the BGA breakout vias, plus bulk 10 uF near the device. Verify I/O bank supply requirements against your chosen I/O standards in the SX-A datasheet power section.
Antifuse FPGAs are one-time programmable: a design error found after programming scrapes the device. Complete full functional simulation and static timing analysis (including worst-case speed-grade corners) in Libero before committing production parts. Lock your pin assignments early - the 256-BGA footprint is fixed, and 203 of 256 balls are user I/O, so pad migration options are limited. Buy a few spare units per panel for development programming on the A speed grade before ordering the full production lot.
The FGG256 fine-pitch BGA requires a controlled reflow profile and via-in-pad or dog-bone fanout on 0.8 mm-class ball pitch. Follow the SX-A datasheet thermal section: thermal performance depends on device, operating temperature, current, and board heat dissipation - use at least a 4-layer board with solid ground plane and thermal vias under the package for the +125C upper ambient corner. Inspect with X-ray or post-reflow AOI given the one-time-programmable die; a solder defect discovered later cannot be reworked without risking the programmed device.
合規資訊
Distributor listings describe the part as lead free; the FGG256 package designation denotes lead-free balls. Formal REACH/halogen declarations should be requested from Microchip product compliance documentation.
