A54SX08-TQG176 - 12K Gate SX FPGA 176-TQFP | Microchip
MPN： A54SX08-TQG176 ✓ 啟用中A54SX08-TQG176 概覽
An FPGA (Field-Programmable Gate Array) is a semiconductor device containing a fabric of programmable logic blocks and interconnects that the designer configures after manufacturing. Within the programmable logic hierarchy, the SX family sits under Actel antifuse FPGAs, which are one-time-programmable (OTP) devices; antifuse programming gives them inherent resistance to configuration upset compared with SRAM-based FPGAs, making them a long-standing choice in high-reliability and industrial systems.
Key features of the A54SX08 include the Actel sea-of-modules architecture, which delivers high logic utilization and deterministic timing; 0.35 um process technology; and a speed path supporting clock rates up to 240 MHz according to distributor listings. The dual-supply scheme separates core and I/O power, supporting mixed 3.3 V and 5 V system interfaces.
Technical depth: the SX family implements combinational and sequential logic in C-cells and R-cells with dedicated fast carry chains and a hierarchical routing structure, allowing timing-critical paths to avoid long routing delays. Because the device is antifuse OTP, the configuration is permanent and powers up instantly without an external configuration ROM.
Typical applications include industrial control and automation glue logic, communications and networking protocol bridges, test and measurement instrumentation, and military/aerospace-grade legacy system sustainment where the OTP fabric is preferred.
Design consideration: as a one-time-programmable device, the design must be fully verified in simulation before programming, and a small number of spare devices should be planned for engineering iterations.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 A54SX08-TQG176 — 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-TQG176 （相同外形與佔位） — 差異在於 System Gates, Series, Operating Temperature, Package, Process Technology.
A54SX08-1TQG176
✅ 直接替換聯絡詢價
查看資料表 →A54SX16-TQG176
✅ 直接替換聯絡詢價
查看資料表 →A54SX16-1TQG176
✅ 直接替換聯絡詢價
查看資料表 →A54SX16-2TQG176I
✅ 直接替換聯絡詢價
查看資料表 →A54SX16P-TQG176
✅ 直接替換聯絡詢價
查看資料表 →A54SX16-TQG176I
✅ 直接替換聯絡詢價
查看資料表 →A54SX08-TQG176 最大額定值與電氣特性
| Series | SX (Actel SX Family) |
| System Gates | 12000 (approx.) |
| Logic Cells | 512 |
| Logic Array Blocks (LABs) | 768 |
| Number of I/O | 128 |
| Maximum Frequency | 240 MHz |
| Process Technology | 0.35 um |
| Supply Voltage (Core) | 3 V ~ 3.6 V |
| Supply Voltage (I/O) | 4.75 V ~ 5.25 V |
| Programming Technology | Antifuse (one-time programmable) |
| 封裝 / 外殼 | 176-LQFP (176-TQFP, 24x24 mm) |
| Supplier Device Package | 176-TQFP |
| 安裝類型 | Surface Mount |
A54SX08-TQG176 176-tqfp 腳位配置指南
A54SX08-TQG176（176-tqfp 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-TQG176.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX08-TQG176 適用於 6 應用s: Industrial Control and Automation, Communications and Networking Equipment, Test and Measurement Instrumentation, Aerospace and Defense Legacy Sustainment, Embedded System Glue Logic and Bus Bridging, Medical Device Control Electronics.
Industrial Control and Automation
The A54SX08-TQG176 fits industrial control and factory automation boards that need deterministic, instantly-available glue logic and protocol conversion. Its 128 user I/O and 3.3 V core / 5 V I/O dual-supply scheme let it bridge legacy 5 V TTL sensors and actuators to modern 3.3 V controllers without level-shift circuits. Because the antifuse fabric is one-time-programmable, the configuration is immune to power-up configuration delays and cannot be corrupted in electrically noisy factory environments, unlike SRAM FPGAs that need a configuration device. Typical roles include PLC I/O expansion, motor-control sequencing, and fieldbus interface bridging, with the 240 MHz class fabric handling timing-critical counter and PWM functions.
推薦
Communications and Networking Equipment
In telecommunications and networking line cards, the A54SX08-TQG176 serves as a protocol bridge, framer assist, and backplane interface device. The SX family sea-of-modules architecture provides predictable routing delays, which matters for fixed-latency path enforcement in TDM and packet-backplane designs. With 128 I/O in a 24x24 mm 176-TQFP, the device terminates wide parallel buses while consuming moderate board area and power. The antifuse configuration eliminates configuration readout at power-up, reducing link bring-up time in systems with strict startup budgets. Engineers typically clock timing-critical logic from a recovered reference and exploit the dedicated carry chains for counters and CRC-style functions within the approximately 12,000-gate budget.
推薦
Test and Measurement Instrumentation
Benchtop and modular instrumentation frequently use the A54SX08-TQG176 as timing, triggering, and acquisition-sequencing logic. The SX fabric's deterministic timing supports tight trigger-skew budgets, while 128 I/O address-wide parallel acquisition buses and high-channel-count relay/control matrices. The dual 3.3 V/5 V supply operation simplifies integration into instruments that still carry 5 V logic islands. Antifuse one-time-programmability means the instrument firmware-defined logic loads instantly at power-on, an advantage over SRAM FPGAs that need hundreds of milliseconds for configuration. The roughly 12,000-gate capacity accommodates counter/timer blocks, state machines, and bus-interface logic in a single 176-TQFP device.
推薦
Aerospace and Defense Legacy Sustainment
Many military and avionics programs were designed around Actel antifuse FPGAs, and the A54SX08-TQG176 remains a sustainment part for these platforms. The antifuse fabric's immunity to configuration memory upset and instant power-up behavior align with program requirements that predate SRAM-FPGA configuration management. The 0.35 um process is well characterized for total-dose behavior relative to modern deep-submicron nodes, and the dual-supply operation matches 5 V/3.3 V mixed legacy buses common in aging platforms. Note that the commercial TQG176 device is not radiation-qualified; new space-flight designs should use the RTAX family, while ground-based defense systems can sustain existing SX08 designs with this MPN.
推薦
Embedded System Glue Logic and Bus Bridging
The A54SX08-TQG176 is widely used as high-density glue logic replacing dozens of 74-series devices in embedded CPU boards. A single approximately 12,000-gate device absorbs address decoding, interrupt control, wait-state generation, and bus-width conversion between microprocessors and peripherals. The 128 I/O in one 176-TQFP collapses board area and improves reliability by reducing device count and solder joints. Because the design is one-time-programmable, teams must freeze the logic before programming, which suits mature, stable embedded platforms more than rapidly iterating prototypes. The 240 MHz-class fabric comfortably handles microprocessor bus timing, and the 3.3 V/5.0 V dual-supply I/O directly interfaces legacy peripheral families.
推薦
Medical Device Control Electronics
Medical diagnostic and monitoring equipment benefits from the A54SX08-TQG176's deterministic, fixed-configuration logic for patient-interface sequencing, sensor multiplexing, and safety interlocks. Instant power-up configuration supports the fast-start requirements of portable and cart-based instruments, and the antifuse fabric avoids configuration-storage failures that could delay patient-ready status. The 5 V-tolerant I/O domain interfaces with legacy medical sensor front ends, while the 3.3 V core connects to modern processor subsystems. Designers should treat the one-time-programmable nature as a configuration-management feature: the released medical logic image is physically locked into the device, simplifying design-history documentation and change control under quality-system audits.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX08-TQG176 — 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 | A54SX08-1TQG176 | A54SX16-TQG176 | A54SX16-2TQG176I | A54SX16P-TQG176 |
|---|---|---|---|---|---|
| Package | 176-TQFP (24x24 mm) | 176-TQFP (24x24 mm) - same | 176-TQFP (24x24 mm) - same | 176-TQFP (24x24 mm) - same | 176-TQFP (24x24 mm) - same |
| Brand | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) |
| System Gates | 12000 (approx.) | 12000 (approx.) | 24000 (approx.) | 24000 (approx.) | 24000 (approx.) |
| Number of I/O | 128 | 128 | 128 | 128 | 128 |
| Speed Grade | Standard | -1 (faster) | Standard | -2 (fastest) | Standard (SX16P process) |
| Programming Technology | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) |
| Temperature Range | Commercial | Commercial | Commercial | Industrial (I suffix) | Commercial |
主要差異化特點
- Identical density at standard speed cost point (對比A54SX08-1TQG176)
- Right-sized density avoids over-buying (對比A54SX16-TQG176)
- Antifuse OTP configuration security (對比SRAM-based FPGAs (e.g., Lattice/Xilinx equivalents))
設計說明
The A54SX08-TQG176 uses two supply domains: a 3.0-3.6 V core rail and a 4.75-5.25 V I/O rail. Decouple each rail with at least 0.1 uF ceramic capacitors placed within 5 mm of the corresponding supply pins, plus 10 uF bulk capacitance per rail. Antifuse FPGAs draw a configuration-independent static current at power-up, so inrush is dominated by decoupling capacitance rather than configuration fetch - useful for systems with tight power-sequencing windows. Verify per-rail current in the timing report before finalizing regulator sizing.
The device is one-time-programmable (antifuse). Never release a netlist to programming before completing static timing analysis and gate-level simulation in Microchip Libero SoC (legacy Actel Designer flow). A single incomplete verification cycle consumes an irreplaceable packaged device. Recommended practice: hold a minimum 10 percent spares buffer for engineering builds, and lock the pin assignment file early since the 176-TQFP pinout cannot be changed after the PCB is fabricated.
For the 176-TQFP (24x24 mm, 0.5 mm pitch lead frame), use a standard TQFP-176 footprint per the mechanical drawing in the 54SX family datasheet. Keep unused I/O pins programmed as inputs with pull-up or defined drive levels to avoid floating-node noise. Route the core and I/O ground returns as a solid plane; the QFP perimeter lead arrangement means signal integrity for fast switching groups depends on low-inductance return paths. Thermal resistance is adequate for SX08 densities without heatsinking, but confirm against the datasheet theta-JA for your airflow.
合規資訊
Compliance status for this legacy Microsemi/Microchip SX FPGA was not stated in the retrieved web data; verify RoHS/REACH status via the Microchip product compliance portal before procurement.
