A54SX08-2FGG144I - SX FPGA 8K Gates 144-FBGA | Microsemi
MPN： A54SX08-2FGG144I ✗ 停產A54SX08-2FGG144I 概覽
An FPGA (Field-Programmable Gate Array) is a semiconductor device containing programmable logic blocks and interconnects that designers configure after manufacturing. Within the programmable logic hierarchy, the device sits at the gate level: FPGA -> programmable logic device -> digital IC. The Actel SX family uses a sea-of-modules antifuse architecture, meaning the programming connections are one-time programmable (OTP) and retain configuration through power cycles with no external boot flash required.
Key features of the A54SX08-2FGG144I include its antifuse non-volatile programming (no configuration PROM, instant-on operation, and inherent resistance to configuration readback attacks), a 320 MHz system toggle rate that was class-leading for its generation, and dual 3.3V/5V tolerant I/O capability that eases interfacing with legacy 5V logic. The 111 available user I/O in a 144-ball package delivers a high I/O-to-gate ratio suited to glue logic and interface bridging.
The sea-of-modules architecture places routing resources close to logic modules, giving deterministic, low-skew interconnect and reducing design iteration time compared with SRAM FPGAs of the same era. Because configuration is fixed at programming time, the device suits high-reliability and secure applications where bitstream volatility is unacceptable.
Typical applications include legacy industrial control, aerospace and defense subsystems, 5V-to-3.3V interface bridging, bus arbitration, state machines, and addressing/decode logic in long-lifecycle embedded systems.
Designers should note the one-time-programmable nature: logic must be finalized before programming, and device density (8K gates) must be verified against post-fit utilization. This page synthesizes distributor data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 A54SX08-2FGG144I — 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： A54SX08-2FGG144I （相同外形與佔位） — 差異在於 Package, Family, Operating Temperature, System Gates, Process Technology.
A54SX08-2FGG144
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查看資料表 →A54SX08-2FGG144I 最大額定值與電氣特性
| Family | Actel SX (54SX) |
| System Gates | 8000 gates |
| Logic Cells (Modules) | 512 cells |
| User I/O | 111 |
| Maximum Toggle Rate | 320 MHz |
| Process Technology | 0.35 um |
| 供應電壓 | 3.3 V / 5 V |
| Programming Technology | Antifuse (one-time programmable) |
| Configuration Memory | Non-volatile (no external boot device) |
| 封裝 | 144-ball Fine-Pitch BGA (FGG144) |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40C to +125C (Industrial) |
| Temperature Grade | I (Industrial) |
| Speed Grade | -2 |
| Lead Free | Yes |
| RoHS 狀態 | Compliant (LEAD FREE per supplier data) |
A54SX08-2FGG144I 144-ball fine-pitch bga (fgg144) 腳位配置指南
A54SX08-2FGG144I（144-ball fine-pitch bga (fgg144) 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： A54SX08-2FGG144I.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX08-2FGG144I 適用於 6 應用s: Industrial Control and Automation, Aerospace and Defense Legacy Systems, 5V Legacy Interface Bridging, Address Decoding and Bus Arbitration, Secure and Tamper-Resistant Logic, Long-Lifecycle Embedded Systems.
Industrial Control and Automation
The A54SX08-2FGG144I fits industrial control cards that need deterministic glue logic, state machines, and bus interfacing in environments spanning -40C to +125C. Its 320 MHz toggle rate at the -2 speed grade comfortably covers PCI-bus era decode, arbitration, and timing-generation functions, while 111 user I/O in 144 balls provides enough pins for parallel backplane interfaces. The antifuse configuration powers up instantly with no boot flash, improving cold-start reliability on factory floors, and its non-volatile logic resists corruption from power interruptions common in industrial settings.
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Aerospace and Defense Legacy Systems
Antifuse FPGAs like the A54SX08-2FGG144I are valued in aerospace and defense sustainment programs because configuration data cannot be read back, and there is no SRAM bitstream to corrupt under radiation-induced upsets. The industrial -I temperature rating and one-time-programmable silicon make the device appropriate for avionics glue logic, telemetry framing, and discrete signal conditioning boards being maintained through last-time-buy purchasing. With 8K gates and deterministic low-skip routing from the sea-of-modules architecture, it replicates decades-old schematics without timing surprises when recompiled in Libero.
推薦
5V Legacy Interface Bridging
The dual 3.3V/5V I/O capability of the A54SX08-2FGG144I allows direct interfacing with legacy 5V TTL and 5V CMOS buses without external level shifters, reducing BOM count and board area. Typical bridging tasks include connecting a 5V VME/ISA-era peripheral to a 3.3V microprocessor bus, implementing bidirectional transceivers with direction control, and generating 5V-compatible chip-select and strobe signals. The 111 available I/O give ample pin budget for wide parallel buses, and the 320 MHz toggle rate is far above the 8-16 MHz rates of the legacy buses being served.
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Address Decoding and Bus Arbitration
Address decode, wait-state generation, and multi-master bus arbitration are classic SX-family workloads. The deterministic routing of the sea-of-modules architecture yields consistent, low-skew propagation for decode paths, which matters when setup/hold windows on legacy buses are only tens of nanoseconds. The A54SX08-2FGG144I implements these functions with a few hundred of its 512 modules, leaving headroom for interrupts, DMA handshake logic, and watchdog functions. Instant-on antifuse configuration means decode logic is active at the first clock edge - critical for systems where the CPU fetches reset vectors immediately at power-up.
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Secure and Tamper-Resistant Logic
Because antifuse configuration resides in permanent silicon interconnect with no external bitstream storage, the A54SX08-2FGG144I presents no configuration-readback attack surface - the property that kept Actel antifuse parts in secure designs. Encryption-key handling around boot ROMs, board-level authentication challenges, and lockout logic can be implemented without exposing secrets during power-up, unlike SRAM FPGAs that load configuration from external flash. The industrial-grade -I part sustains these functions across the full -40C to +125C range for secure equipment deployed outdoors or in vehicles.
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Long-Lifecycle Embedded Systems
Medical, energy, and transportation equipment certified for 10-20 year service lives frequently standardized on SX-family antifuse FPGAs. The A54SX08-2FGG144I continues to serve such programs through excess and last-time-buy stock because the die design is frozen and recompilation results remain reproducible in current Libero tools. Its 8K-gate capacity suits the supervisory, sequencing, and interface roles these certifications typically assign to FPGA fabric, and the non-volatile configuration eliminates a class of boot failures that would otherwise trigger recertification events in regulated deployments.
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推薦產品摘要
工程參考資料，適用於 A54SX08-2FGG144I — 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 | A54SX08-2FGG144 | A54SX08-FGG144 |
|---|---|---|---|
| Package | 144-ball FBGA (FGG144) | 144-ball FBGA (FGG144) - same | 144-ball FBGA (FGG144) - same |
| Brand | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) |
| System Gates | 8K | 8K | 8K |
| Logic Cells | 512 | 512 | 512 |
| User I/O | 111 | 111 | 111 |
| Max Toggle Rate | 320 MHz (-2 speed grade) | 320 MHz (-2 speed grade) | Standard speed grade (lower) |
| Programming Technology | Antifuse (OTP, non-volatile) | Antifuse (OTP, non-volatile) | Antifuse (OTP, non-volatile) |
| Lifecycle Status | EOL / last-time-buy | EOL / last-time-buy | EOL / last-time-buy |
主要差異化特點
- Industrial temperature range (對比A54SX08-2FGG144)
- Faster -2 speed grade (對比A54SX08-FGG144)
- Non-volatile antifuse configuration (對比SRAM FPGAs (architectural class))
設計說明
The A54SX08-2FGG144I operates from a dual 3.3V/5V supply environment per the SX family datasheet. Apply clean, well-decoupled supplies with at least 0.1 uF ceramic capacitors at each supply pin pair on the FGG144 package, plus bulk 10 uF near the device. Because antifuse FPGA core current is static (no configuration current surge at power-up), inrush is dominated by board decoupling - simplifying power sequencing versus SRAM FPGAs, which require configuration-power sequencing analysis.
The device is one-time programmable: do not finalize programming until post-fit timing analysis and functional simulation pass on the target device. Verify actual gate utilization against the 8K-gate/512-module budget, as reported utilization after routing can exceed naive RTL estimates by 20-30%. Also confirm the exact speed-grade timing model (-2) used in static timing analysis matches the ordered part; the non '-2' A54SX08-FGG144 is slower and is not timing-equivalent.
The 144-ball FGG144 fine-pitch BGA requires a controlled reflow profile and via-in-pad or dog-bone fanout with 0.15-0.2 mm trace/space at 1.0 mm ball pitch. Follow the mechanical drawing in the Microchip 54SX family datasheet for land-pattern geometry. Because the part is EOL, design any new rework boards with an LGA/QFN-compatible rework strategy in mind - BGA rework of obsolete antifuse devices without spare programmed units is a known sustainment risk.
合規資訊
Supplier listings describe the part as LEAD FREE; RoHS compliant per distributor data. REACH, halogen-free, and conflict-minerals status not stated in provided data.
