A54SX32A-2FGG256I - 48K Gate FPGA, 256-BGA | Microchip Technology
MPN： A54SX32A-2FGG256I ✓ 啟用中A54SX32A-2FGG256I 概覽
An FPGA (Field-Programmable Gate Array) is a semiconductor device containing a fabric of configurable logic cells and routing resources that designers program to implement custom digital circuits. Within the programmable-logic hierarchy, the SX-A family sits among one-time-programmable (OTP), antifuse-based FPGAs, sitting above simple SPLD/CPLD devices and providing gate-array-class density with the flexibility of field programming.
Key differentiating features of the A54SX32A-2FGG256I include its antifuse interconnect architecture, which is non-volatile and inherently immune to configuration-bit upsets, low static power typical of 2.5 V 0.25 um CMOS process technology, and no external configuration PROM requirement - the device is live and configured at power-up. With 2880 logic cells (approximately 48,000 equivalent system gates), it integrates glue logic, bus interfaces, state machines, and control functions that previously required multiple TTL/PLD devices into a single low-cost chip.
Technical depth: the SX-A architecture combines logic modules with dedicated routing channels, achieving predictable, low-skew timing. The 0.25 um CMOS antifuse process gives very low interconnect parasitic capacitance versus SRAM FPGAs of the era, supporting system performance up to 313 MHz toggle rates while minimizing dynamic power. The 256-ball FBGA provides 203 flexible user I/O with industry-standard 2.5 V/3.3 V-compatible I/O banks and surface-mount reflow assembly.
Typical applications include industrial control and automation boards, telecommunications line cards, military/aerospace upgrade programs where OTP configuration security matters, embedded glue-logic consolidation, and legacy system life-extension designs that must remain sourced for years.
Design consideration: because the device is one-time programmable, verify timing closure and pin assignment in Libero SoC before programming - there is no rework path after antifuse programming, so budget a small pilot run of programmed units for validation.
This page synthesizes distributor pricing and stock data, same-footprint drop-in speed-grade and temperature-grade alternatives, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-09-03.
直接替換替代品，適用於 A54SX32A-2FGG256I — 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-2FGG256I （相同外形與佔位） — 差異在於 Package, System Gates, Operating Temperature, RoHS Status, Family.
A54SX32A-1FGG256
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-1FGG256I
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-FFG256I
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX32A-FGG256I
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-2FG256M
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX32A-2FGG256I 最大額定值與電氣特性
| Family | SX-A (antifuse FPGA) |
| System Gates | 48000 gates |
| Logic Cells / Modules | 2880 |
| User I/O | 203 |
| Supply Voltage (Core) | 2.5 V (2.25 V to 2.75 V) |
| Speed Grade | -2 |
| Maximum Toggle Frequency | 313 MHz |
| Technology | 0.25 um CMOS antifuse |
| Programmability | One-Time Programmable (OTP), non-volatile |
| 封裝 | 256-BGA (FBGA, FGG256) |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40C to +85C (industrial) |
| External Configuration PROM | Not required |
| RoHS 狀態 | Lead free / RoHS compliant |
| Typical Application Tools | Microchip Libero SoC design suite |
| Number of Distributors Listed | 6 (per Octopart, as of 2026-09-03) |
A54SX32A-2FGG256I 256-bga (fbga, fgg256) 腳位配置指南
A54SX32A-2FGG256I（256-bga (fbga, fgg256) 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-2FGG256I.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX32A-2FGG256I 適用於 6 應用s: Industrial Control and Automation, Defense and Aerospace Sustainment, Telecommunications Line Cards, Glue Logic Consolidation, Embedded Systems and Test Instrumentation, Legacy System Life Extension.
Industrial Control and Automation
The A54SX32A-2FGG256I fits industrial control boards that need deterministic glue logic, bus bridging, and sequencing under one chip: its 48,000 system gates and 2880 logic cells absorb address decoders, PWM generators, and state machines, while 203 user I/Os interface PLC backplanes directly. The 2.5 V core with -40C to +85C industrial rating survives factory-floor temperature swings, and the antifuse OTP configuration means the logic is active at the instant power is applied - no configuration boot delay that could stall a safety interlock. Because the antifuse fabric avoids configuration-memory bit upsets, designs deployed for a decade in noisy motor-drive cabinets retain their programmed function. Trade-off: any logic change requires programming new units, so lock the design before volume assembly.
推薦
Defense and Aerospace Sustainment
Legacy defense and avionics platforms widely deployed SX-A FPGAs, and the A54SX32A-2FGG256I remains a sustainment staple precisely because it is OTP: configuration data cannot be read out or corrupted by atmospheric-radiation-induced configuration upsets, a key security and reliability property for military programs. The industrial -40C to +85C rating, 203 I/Os, and 313 MHz class toggle performance cover radar interface, telemetry, and bus-interface boards. Microchip's continued production of the SX-A family lets long-lifecycle programs re-buy the exact speed-grade part instead of redesigning. Program the design into a pilot batch and archive the programming files and fuse-map; OTP means spares must be pre-programmed or programmed at depot.
推薦
Telecommunications Line Cards
Telecom line-card designs use the A54SX32A-2FGG256I to consolidate backplane framing logic, TDM transport, and board-level control into one antifuse device. The SX-A architecture's low interconnect capacitance supports the 313 MHz class toggle rates needed for high-speed counters and serial framing, while the 256-ball FBGA packs 203 I/O into a compact surface-mount footprint suited to high-density shelf cards. The OTP fabric starts up instantly at slot insertion, avoiding configuration-download latency across a backplane, and the 2.5 V core keeps static power low across racks of populated shelves. Verify timing against the -2 grade in Libero SoC at worst-case temperature before locking the fuse map.
推薦
Glue Logic Consolidation
The classic SX-A use case is replacing dozens of TTL, PAL, GAL, and CPLD devices with one A54SX32A-2FGG256I: 48,000 system gates comfortably absorb address decoding, bus transceiving, interrupt aggregation, and handshaking that previously spanned multiple packages. Consolidation cuts BOM count, board area, and assembly cost - Microchip positions SX-A explicitly as a 'single-chip, low-cost integration' solution. The 203 I/O count covers wide microprocessor and legacy bus widths, and instant-on OTP behavior removes reset-order dependencies that SRAM FPGAs introduce. When migrating multi-PLD designs, re-verify total timing paths in Libero SoC because a single FPGA places all paths in one timing domain.
推薦
Embedded Systems and Test Instrumentation
Embedded controllers and bench/test instruments use the A54SX32A-2FGG256I as a deterministic coprocessor for counters, encoders, trigger engines, and interface translation between MCU buses and custom peripherals. The 313 MHz class toggle capability supports high-resolution event timing, the 2.5 V core holds static power low for benchtop thermal budgets, and the 256-ball FBGA's 0.8/1.0 mm-class ball pitch reflows on standard SMT lines. Because the antifuse configuration is fixed, instrument firmware revisions that only change software never require re-programming the FPGA - a practical advantage for calibration-stable instruments. Reserve spare pre-programmed units; OTP rules out field logic updates.
推薦
Legacy System Life Extension
When a legacy board's original FPGA reaches end-of-availability, the A54SX32A-2FGG256I frequently serves as the re-buy part for systems originally designed around the A54SX32A family, since Microchip/Microsemi has maintained SX-A production specifically for installed-base support. Designers can regenerate the original netlist or RTL in Libero SoC, retarget to the -2 FGG256 device, and manufacture new boards matching the original footprint. The OTP architecture guarantees the replacement behaves identically to the original at every power cycle. This page's drop-in alternatives list (-1 and standard grades in the same footprint) provides fallbacks when the -2 grade goes on allocation.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX32A-2FGG256I — 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-1FGG256 | A54SX32A-1FGG256I | A54SX32A-FFG256I | A54SX32A-2FG256M |
|---|---|---|---|---|---|
| Package | 256-BGA (FGG256) | 256-BGA (FGG256) - same | 256-BGA (FGG256) - same | 256-BGA (FBGA) - same footprint, verify suffix | 256-BGA (PBGA) - verify FG vs FGG ball map |
| Brand | Microchip Technology (Microsemi) | 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 | -2 | -1 | -1 | standard | -2 |
| Core Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
| Configuration Type | OTP antifuse, no config PROM | OTP antifuse | OTP antifuse | OTP antifuse | OTP antifuse |
主要差異化特點
- Fastest -2 speed grade in the FGG256 footprint (對比A54SX32A-1FGG256)
- OTP antifuse security and instant-on (對比A54SX32A-FFG256I)
- Same-ball-count PBGA variant exists for cost/layout flexibility (對比A54SX32A-2FG256M)
- Honest trade-off: no cross-brand pin-compatible alternative (對比A54SX72A-2FGG484I)
設計說明
The A54SX32A-2FGG256I is one-time programmable (OTP). Complete full timing closure and I/O verification in Microchip Libero SoC before programming: there is no field rework path once antifuses are blown. Run a pilot batch of at least 5-10 programmed units through full functional and temperature validation (-40C to +85C for the I grade) before committing production volume. Archive the fuse map and programming files for sustainment.
Plan the power tree around the 2.5 V core supply (2.25 V to 2.75 V range). Estimated: core current depends on toggle activity; with low interconnect capacitance typical of antifuse fabric, dynamic power scales with switching frequency - verify against the SX-A power calculator in Libero SoC using your actual design utilization rather than relying on gate-count estimates. Decouple VCC and ground with at least 0.1 uF per power pin group plus bulk capacitance near the BGA.
For the 256-ball FBGA, use a standard 256-BGA land pattern with via-in-pad or dog-bone fanout; the fine pitch typically requires 4-mil trace/space and microvias on high-density boards. Confirm the ball map is FGG (fine-pitch) not FG before layout - the A54SX32A-2FG256M uses the FG/PBGA variant and is NOT footprint-identical despite the same ball count. Follow MSL floor-life rules from the datasheet before reflow.
For high-frequency signals (the SX-A fabric supports up to 313 MHz class toggle rates), keep board-level clock traces length-matched and impedance-controlled; assign fast I/O to balls adjacent to ground return vias to minimize loop inductance. Because the device is a legacy part, verify I/O standards supported per bank against the SX-A datasheet I/O tables rather than assuming modern voltage standards.
合規資訊
Distributor listings (Microchip USA, globalspec) identify the A54SX32A-2FGG256I as lead free; RoHS compliance per distributor data. REACH, halogen-free, and conflict-minerals status not stated in provided data.
