A54SX08-PQG208I - 8K Gate FPGA 130 I/O 208-PQFP | Microsemi
MPN： A54SX08-PQG208I ✗ 停產A54SX08-PQG208I 概覽
An FPGA (Field Programmable Gate Array) is a semiconductor device containing configurable logic blocks and programmable interconnects that the designer wires together after manufacturing. Within the power-management hierarchy of a digital system, the FPGA sits between fixed-function ASICs (zero flexibility, lowest unit cost) and CPLDs (small, fast, low density). The Actel SX family uses a sea-of-modules architecture with fine-grained combinational and sequential modules, achieving performance and integration levels that simplify design time and reduce power consumption for performance-intensive applications.
Key features of the A54SX08 include antifuse-based one-time programmable configuration, which makes the configuration non-volatile and instantly active at power-up with no external configuration ROM or boot time. The SX sea-of-modules architecture supports high-speed, register-intensive designs, and the family is a well-established, proven solution for designs requiring long product lifecycles.
Technical depth: the SX architecture combines C-cell (combinational) and R-cell (register) modules in a flexible routing fabric, giving high logic utilization per gate compared to SRAM FPGAs of the same era. The dual supply arrangement separates core and I/O power, supporting 3.3V and 5V I/O signaling environments.
Typical applications include industrial control, networking and communications interfaces, mil-aerospace legacy designs, and high-reliability systems where instant-on configuration and design security matter.
Design consideration: because antifuse FPGAs are one-time programmable, prototype thoroughly and reserve spare I/O and routing headroom in the floorplan.
This page synthesizes verified distributor data, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 A54SX08-PQG208I — 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-PQG208I （相同外形與佔位） — 差異在於 Operating Temperature, Package, Family, User I/O, System Gates.
A54SX08-1PQG208
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →A54SX08-2PQG208
✅ 直接替換聯絡詢價
查看資料表 →A54SX16-1PQG208
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →A54SX16-2PQG208I
✅ 直接替換聯絡詢價
查看資料表 →A54SX16-PQG208
✅ 直接替換聯絡詢價
查看資料表 →A54SX16P-PQG208
✅ 直接替換聯絡詢價
查看資料表 →A54SX08-PQG208I 最大額定值與電氣特性
| Series | SX (Actel SX Family) |
| Number of Equivalent Gates | 8000 |
| Logic Array Blocks (LABs) | 768 |
| Number of I/O | 130 |
| 供應電壓 | 3 V to 3.6 V, 4.75 V to 5.25 V |
| 最大時脈頻率 | 280 MHz |
| 封裝 / 外殼 | 208-BFQFP |
| Supplier Device Package | 208-PQFP (28x28 mm) |
| Programmable Type | Antifuse (One-Time Programmable) |
| Architecture | Sea-of-Modules |
| 安裝類型 | Surface Mount |
| 工作溫度 | Industrial (I suffix) |
| Configuration Memory | Non-volatile antifuse, no external boot device |
A54SX08-PQG208I 208-pqfp (28x28 mm) 腳位配置指南
A54SX08-PQG208I（208-pqfp (28x28 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： A54SX08-PQG208I.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX08-PQG208I 適用於 6 應用s: Industrial Control and Automation, Communications and Networking Interfaces, Aerospace and Defense Legacy Systems, Test and Measurement Equipment, Medical Device Control Logic, 5V Legacy System Retrofit.
Industrial Control and Automation
The A54SX08-PQG208I fits industrial control because its antifuse configuration is non-volatile and glitch-immune - a PLC I/O card powers up with valid logic within microseconds of rail stabilization, with no configuration controller to fail in electrically noisy factory environments. Its dual 3V-3.6V / 4.75V-5.25V supply architecture lets the 130 I/Os interface directly with legacy 5V sensors, relays, and backplanes while the core runs at 3.3V, and the 280 MHz-class SX architecture absorbs fast encoder decoding, PWM generation, and protocol glue logic that a CPLD cannot hold. Place it between front-end isolation and the MCU, decouple both rails with 10 uF plus 0.1 uF ceramics, and reserve 15-20% I/O and routing headroom since antifuse devices cannot be reprogrammed after deployment.
推薦
Communications and Networking Interfaces
Line-card and backplane designs favor the A54SX08-PQG208I because the SX sea-of-modules architecture delivers deterministic, low-skew timing for serial parallel interfaces, address decoding, and FIFO bridging at line rates well within its 280 MHz capability. Antifuse one-time programming removes the configuration bitstream from the board, an advantage in telecom equipment where configuration integrity and instant-on link establishment at hot-swap insertion are required. With 130 I/Os in a 28x28 mm 208-PQFP, one device terminates wide data buses that would otherwise need multiple smaller logic devices, reducing skew between groups. Designers should register all high-speed inputs to dedicated R-cells near the package perimeter and simulate with the -2 speed grade if backplane timing margins are tight.
推薦
Aerospace and Defense Legacy Systems
The Actel SX family established itself in mil-aerospace because antifuse FPGAs tolerate radiation-induced configuration upset better than SRAM cells and contain no stored configuration that can be read out - useful for design security in defense platforms. The A54SX08-PQG208I's industrial rating, non-volatile instant-on configuration, and dual-supply 5V-tolerant I/O keep legacy avionics and satellite-adjacent ground equipment serviceable without board redesign. The 8,000-gate capacity covers sequencers, bus interfaces, and voting logic typical of these systems. For sustainment, qualify the industrial-grade device against your platform's environmental spec, order last-time-buy quantities given the mature lifecycle, and archive the fuse programming files, because antifuse programming is irreversible and must be reproducible across production lots.
推薦
Test and Measurement Equipment
Bench instruments and ATE fixtures benefit from the A54SX08-PQG208I's combination of instant-on configuration and 130 flexible I/Os for driving stimulus, multiplexing measurement channels, and implementing counters and trigger state machines. The antifuse fabric offers deterministic timing with no configuration load delay, so a tester becomes ready the moment power is applied - important in production fixtures cycling power thousands of times per day. The 280 MHz-class architecture handles time-to-digital staging and fast comparators handshaking, while the 5V supply domain simplifies direct connection to legacy instrument rails. Route sensitive analog-side control lines away from fast switching I/O banks and verify setup/hold at the device speed grade selected for the instrument.
推薦
Medical Device Control Logic
In non-implant medical equipment such as diagnostic instruments, infusion workstations, and lab automation, the A54SX08-PQG208I provides reliable glue logic and sequencing whose configuration cannot silently corrupt - antifuse state is immune to soft errors that would require SRAM FPGA configuration reload, a consideration for safety-related control paths. The instant-on property means a device's safety interlock logic is active as soon as the 3.3V and 5V rails stabilize, without waiting for a boot flash. Its 130 I/Os integrate motor-index encoders, user-interface scanning, and sensor threshold comparators in one 28x28 mm package. Designers must still implement external watchdog supervision and fail-safe I/O since the internal logic itself is user-defined and cannot be field-updated after programming.
推薦
5V Legacy System Retrofit
Many installed industrial and transportation systems run 5V logic, and replacing failed ASICs or PAL/GAL clusters is the classic use case for the A54SX08-PQG208I: its 4.75V-5.25V I/O supply accepts 5V signaling directly, eliminating level shifters, while the 3V-3.6V core domain keeps dynamic power manageable. The antifuse device consolidates dozens of 22V10-class PLD functions - address decoders, wait-state generators, interrupt encoders - into a single 208-PQFP with 130 I/Os, cutting board area and interconnect failures. Because the device is one-time programmable, replicate the original design as verified netlists and burn devices per replacement batch. Document both rails in the BOM so maintenance teams understand the dual-supply requirement before power-on.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX08-PQG208I — 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 | A54SX08-1PQG208 | A54SX08-2PQG208 | A54SX16-2PQG208I | A54SX16P-PQG208 |
|---|---|---|---|---|---|
| Package | 208-BFQFP (28x28 mm PQFP) | 208-PQFP (28x28 mm) - same | 208-PQFP (28x28 mm) - same | 208-PQFP (28x28 mm) - same | 208-PQFP (28x28 mm) - same |
| Brand | Microsemi (Microchip) | Microsemi (Microchip) | Microsemi (Microchip) | Microsemi (Microchip) | Microsemi (Microchip) |
| Supply Voltage | 3V-3.6V, 4.75V-5.25V | 3V-3.6V, 4.75V-5.25V | 3V-3.6V, 4.75V-5.25V | 3V-3.6V, 4.75V-5.25V | 3V-3.6V, 4.75V-5.25V |
| Temperature Grade | Industrial (I) | Commercial | Commercial | Industrial (I) | Commercial |
| Speed Grade | Base (P) | -1 | -2 (faster) | -2 (faster) | SX16P performance grade |
| Configuration Technology | Antifuse (one-time programmable) | Antifuse (one-time programmable) | Antifuse (one-time programmable) | Antifuse (one-time programmable) | Antifuse (one-time programmable) |
主要差異化特點
- Industrial temperature rating (對比A54SX08-2PQG208)
- Fastest timing within same density and package (對比A54SX08-1PQG208)
- Optimized cost at required density (對比A54SX16-2PQG208I)
- Entry SX family pricing vs SX16P performance tier (對比A54SX16P-PQG208)
設計說明
The A54SX08-PQG208I requires two independent rails: 3V-3.6V and 4.75V-5.25V per the verified Microsemi specifications. Decouple each rail with at least 10 uF bulk plus 0.1 uF ceramic capacitors distributed across the 208-pin package perimeter. Because the SX family is antifuse-based with no configuration current, dynamic core current depends on toggle rate - budget power using Designer software power estimation with your actual netlist rather than assuming worst-case numbers. Verify rail sequencing against the SX family datasheet before applying 5V to a 3.3V-only board state.
Antifuse FPGAs are one-time programmable: an incorrect fuse file permanently consumes a device. Establish a locked, timing-signed-off fuse file under revision control before production programming, and always program with the same Designer software version used for sign-off, since tool releases can change routing algorithms. Preserve 15-20% spare I/O and routing headroom in the floorplan - an over-utilized SX design may fail to route late-stage changes, forcing a density migration to A54SX16 in the same package.
With 130 I/Os in a 28x28 mm PQFP, group fast-switching outputs on alternating sides of the package and return every bank to adjacent ground pins. The 5V domain permits legacy-level signaling; for edge-sensitive inputs on long backplane traces, register inputs in perimeter R-cells and consider series termination (22-33 ohm) to control ringing on unterminated lines. Run Designer static timing with the selected speed grade (-1, -2, or base) rather than datasheet generic numbers, and add 10-15% margin for industrial temperature corners.
The 208-PQFP (28x28 mm, 0.5 mm pitch) requires a foot pattern per the Microchip/Microsemi SX datasheet package drawing; verify land pattern against JEDEC PQFP-208 outlines before fab release. Use at least 2 oz copper pours on the outer layers under the device to spread heat and reduce ground inductance. Mark pin-1 per the package chamfer/dot, and inspect with 10x magnification after reflow - fine-pitch QFP solder bridges are the leading rework cause on legacy Actel boards.
合規資訊
Compliance data was not present in the verified web data for this legacy Actel SX part. Confirm RoHS/REACH status with Microchip (Microsemi) product change notifications before new designs.
