A54SX32-CQ208B - 48K Gate Military FPGA 208-CQFP | Microchip
MPN： A54SX32-CQ208B ✓ 啟用中A54SX32-CQ208B 概覽
An FPGA (Field-Programmable Gate Array) is a semiconductor device containing a matrix of configurable logic blocks and programmable interconnects that the designer wires together after manufacturing, sitting within the programmable logic hierarchy: FPGA -> programmable logic device -> digital integrated circuit -> semiconductor. The Actel SX family uses antifuse programming technology, meaning the configuration is one-time programmable (OTP) and retains its configuration permanently with no external configuration boot device required.
Key features of the A54SX32-CQ208B include a sea-of-modules architecture that delivers high gate utilization and predictable timing, dual supply operation (3V to 3.6V core/I/O domain and 4.75V to 5.25V programming supply), 48,000 system gates equivalent to roughly 3,456 usable logic modules, and military-grade temperature qualification. The ceramic CQFP package with tie bar provides hermetic sealing, making the device suitable for high-reliability defense and aerospace environments where plastic-packaged commercial FPGAs are unacceptable.
Technically, the SX architecture combines dedicated registers with combinatorial modules, enabling register-heavy pipelines at clock rates up to 238 MHz. Because antifuse interconnect has no SRAM configuration bitstream overhead, the device offers lower static power and inherent resistance to configuration upset compared with SRAM FPGAs, an important attribute in radiation-tolerant and secure system designs.
Typical applications include military avionics glue logic and bus interfaces, spacecraft and missile electronics, industrial systems requiring secure one-time-programmable logic, and legacy design sustainer builds where the SX family was originally designed in.
A key design consideration: this part is RoHS non-compliant due to lead-containing ceramic package terminations, so it is restricted to military and aerospace exemptions.
This page synthesizes distributor availability data, drop-in family alternatives, and military-grade design notes not consolidated in the manufacturer datasheet.
直接替換替代品，適用於 A54SX32-CQ208B — 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： A54SX32-CQ208B （相同外形與佔位） — 差異在於 Family, Package, System Gates, Logic Modules, RoHS Status.
A54SX32-CQ208M
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-CQ208
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX32A-1CQ208
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX32-CQ208B 最大額定值與電氣特性
| Family | Actel SX (54SX) |
| System Gates | 48000 gates |
| Number of I/O | 174 |
| Supply Voltage (core/I/O) | 3 V to 3.6 V |
| Supply Voltage (programming) | 4.75 V to 5.25 V |
| 工作溫度 | -55C to +125C (TJ) |
| Grade | Military |
| 封裝 | 208-BFCQFP with Tie Bar (CQFP-208) |
| 安裝類型 | Surface Mount |
| Programmability | One-Time Programmable (antifuse) |
| Architecture | Sea-of-modules |
| Technology | 0.25 um CMOS antifuse |
| Packaging | Bulk |
| RoHS 狀態 | Non-compliant |
| Product Status | Active |
| Manufacturer Lead Time | 44 weeks |
A54SX32-CQ208B 208-bfcqfp with tie bar (cqfp-208) 腳位配置指南
A54SX32-CQ208B（208-bfcqfp with tie bar (cqfp-208) 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： A54SX32-CQ208B.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX32-CQ208B 適用於 6 應用s: Military Avionics Glue Logic, Spacecraft and Launch Vehicle Electronics, Missile and Munitions Electronics, Secure / Anti-Tamper Systems, Legacy Defense Design Sustenance, Industrial High-Reliability Control.
Military Avionics Glue Logic
The A54SX32-CQ208B fits military avionics bus-interface and glue-logic integration because it combines 48,000 gates and 174 user I/O in a hermetic 208-pin ceramic CQFP rated -55C to +125C junction, conditions that commercial plastic FPGAs cannot survive. Its antifuse one-time-programmable fabric means the bitstream is permanently set at programming time, eliminating configuration-boot failures during power transients on aircraft power buses. In a typical avionics design, the device integrates address decoding, bus transceiver control, and discrete-to-digital interface functions between a MIL-STD-1553 interface and processor peripherals, replacing dozens of discrete 54-series parts. The 3V to 3.6V supply rail simplifies integration with modern 3.3V logic while the ceramic package provides moisture immunity at altitude. Performance-wise, the sea-of-modules architecture sustains timing-critical decode paths without the reconfiguration latency of SRAM FPGAs.
推薦
Spacecraft and Launch Vehicle Electronics
For spacecraft digital electronics, the A54SX32-CQ208B's hermetic ceramic CQFP package and antifuse technology directly address launch vibration, vacuum outgassing, and on-orbit thermal cycling. The one-time-programmable configuration cannot be corrupted by single-event configuration upset the way SRAM-based FPGAs can, reducing system-level SEU mitigation burden to functional logic only. The -55C to +125C junction rating covers the thermal swings of eclipse/orbit transitions without active thermal control in many designs. Engineers typically use the 48K gates for telemetry formatting, command decoders, and sensor interface sequencing between radiation-hardened processors and peripheral payloads. The 174 I/O provide ample margin for redundant bus interfaces. Design consideration: the 3V-3.6V core rail pairs naturally with spacecraft 3.3V secondary power, while the programming supply (4.75V-5.25V) is only needed at ground integration, simplifying flight hardware power distribution.
推薦
Missile and Munitions Electronics
Missile guidance and fuze electronics benefit from the A54SX32-CQ208B's combination of instant-on antifuse configuration and military temperature qualification. Because the configuration is hard-wired at the factory, the logic becomes operational within nanoseconds of power application - critical for fast-turn weapons timelines where SRAM FPGA configuration loading (milliseconds) is unacceptable. The hermetic ceramic package survives storage decades in uncontrolled bunkers and the thermal shock of launch. With 48,000 gates and 174 I/O, typical implementations include safe-and-arm sequencing interfaces, inertial sensor data formatting, and guidance processor glue logic. The -55C to +125C junction rating accommodates internal thermal rise after motor ignition without derating. System designers should note the 44-week lead time (per Microchip USA) when planning production lots, and RoHS non-compliance is acceptable under defense lead exemptions.
推薦
Secure / Anti-Tamper Systems
One-time-programmable antifuse FPGAs are a standard choice for secure systems because there is no configuration bitstream stored on the board to intercept, clone, or invert. The A54SX32-CQ208B's antifuse array physically programs routing layers, so the design cannot be read back out of a deployed device, unlike SRAM FPGAs whose bitstream resides in external flash. Combined with the hermetic ceramic package that resists decapping-based probing better than molded plastic, this makes the part well suited to key-storage interfaces, cryptographic accelerator glue logic, and anti-tamper perimeter functions in defense equipment. The 48K gate capacity accommodates small cipher blocks or authentication sequencers alongside system interface logic. Design teams should implement redundant routing and consider layout obfuscation at place-and-route time, since antifuse designs are verified once and cannot be patched in the field.
推薦
Legacy Defense Design Sustenance
Many fielded military platforms designed in the 1990s and 2000s specified Actel SX FPGAs, and lifetime-extension programs must keep sourcing the exact military orderable. The A54SX32-CQ208B remains active (per Microchip USA product status as of 2026), which is why DigiKey, Mouser, and Octopart still list it across 2 distributor channels despite a 44-week factory lead time. For obsolescence management, the same-die A54SX32-CQ208 and pin-compatible A54SX32A-CQ208 in the identical 208-CQFP footprint provide secondary sourcing paths that require no PCB redesign - only design recompilation and re-verification for the SX-A option. Sustenance engineers should qualify both alternates now, maintain verified programming files in the current Microchip toolchain, and store dated certificates of conformance since military ceramic parts are frequent counterfeiting targets on the gray market.
推薦
Industrial High-Reliability Control
In harsh industrial environments such as downhole drilling, steel mills, and power plant control rooms, ambient temperatures and vibration exceed what commercial plastic-packaged FPGAs tolerate. The A54SX32-CQ208B's -55C to +125C junction rating and hermetic 208-CQFP ceramic package bring military-grade reliability to these civilian applications where field replacement is extremely costly. Its antifuse configuration also provides deterministic startup: control logic is live immediately at power-up, which safety-related interlock systems often require. The 48K gates and 174 I/O are sufficient for motor sequencing, sensor fusion front-ends, and communication bridging between legacy 5V-tolerant field signals and modern 3.3V controller domains, supported by the dual 3.3V/5V supply architecture. Note that RoHS non-compliance restricts use in consumer/EU-market equipment, but industrial exemptions and defense exemptions generally permit deployment.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX32-CQ208B — 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 | A54SX32-CQ208 | A54SX32A-CQ208 | A54SX32A-1CQ208 |
|---|---|---|---|---|
| Package | 208-BFCQFP with Tie Bar (CQFP-208) | 208-CQFP - same | 208-CQFP - same | 208-CQFP - same |
| Brand | Microchip Technology (Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology |
| Supply Voltage | 3V-3.6V (5V programming) | 3V-3.6V (5V programming) | 3.3V (SX-A family) | 3.3V (SX-A family) |
| Technology | Antifuse OTP, sea-of-modules | Antifuse OTP | Antifuse OTP (0.25um SX-A) | Antifuse OTP (0.25um SX-A) |
主要差異化特點
- Military temperature and hermetic packaging (對比A54SX32-PQ208 (plastic commercial package))
- Zero configuration-boot risk (對比A54SX32A-CQ208 (SX-A, same package))
- Trade-off: RoHS non-compliance (對比A54SX32A-CQ208)
設計說明
The A54SX32-CQ208B requires a dual-rail power architecture: 3V to 3.6V for core and I/O operation, plus 4.75V to 5.25V only during antifuse programming. In deployed hardware, connect only the 3.3V rail and bring the programming supply to a programming connector or test point. Estimated: antifuse static current is far lower than equivalent SRAM FPGAs since there is no configuration bitstream leakage path, so thermal design is usually dominated by I/O switching current - compute I/O dynamic power with the Microchip (Actel) power calculator using your actual toggle rates.
The 208-CQFP with tie bar is a ceramic, surface-mount, fine-pitch package. Use the package mechanical drawing in the Microchip 54SX family datasheet for land pattern definition, and follow lead-scan verification upon receipt - counterfeit ceramic military parts are common. The tie bar must be soldered or mechanically secured per the datasheet recommendation for mechanical integrity under vibration. For rework, CQFP lead forming is delicate; use hot-bar or profiled convection rework rather than hand soldering to avoid lifting fragile leads.
This device is one-time programmable: an incorrect or marginal programming session permanently consumes the part. Always verify programming voltage (4.75V-5.25V) stability and use qualified programmers with current Actel/Microchip software. Second, the part is RoHS non-compliant - confirm your program falls under military/aerospace lead exemptions before design-in. Third, the B suffix denotes military screening; when substituting A54SX32-CQ208 for the -B variant, obtain customer approval since screening levels may differ on the marking.
合規資訊
RoHS non-compliant per Microchip USA product data (lead-containing ceramic package terminations, permitted under military/aerospace exemptions). Military-grade part; AEC-Q100 not applicable.
