A54SX32-2PQG208 - 48K Gate SX FPGA 208-PQFP | Microchip
MPN： A54SX32-2PQG208 ✓ 啟用中A54SX32-2PQG208 概覽
An FPGA (Field-Programmable Gate Array) is a semiconductor device containing a fabric of configurable logic blocks and interconnects that the designer programs after manufacturing. The A54SX32 belongs to the one-time-programmable (OTP) antifuse class of FPGAs, positioned within the broader hierarchy: FPGA -> programmable logic device -> digital IC -> semiconductor. Unlike SRAM FPGAs, antifuse devices retain their configuration permanently, require no external configuration ROM, and start up instantly at power-on.
Key features include Microchip (formerly Actel/Microsemi) sea-of-modules architecture, which places dedicated R-cells (sequential) and C-cells (combinatorial) on a fine-grained grid for high logic utilization; 0.35 um CMOS process technology; dual-rail operation at 3.3V core with 5V-tolerant I/O; and predictable pin-to-pin delays that simplify timing closure. The 208-pin PQFP provides 174 user-programmable I/O for wide bus interfaces.
The antifuse interconnect architecture delivers inherent resistance to configuration bitstream theft and radiation-induced configuration upsets compared to SRAM-based fabrics, with typical internal routing delays enabling system clock rates up to the 320 MHz toggle specification. Programming is performed once at programming stations using the manufacturer-specified burn-in procedure.
Typical applications include industrial control systems, high-reliability embedded controllers, glueless bus bridging, state machines replacing multiple discrete logic devices, and aerospace/defense predecessor designs where deterministic instant-on behavior is required.
A key design consideration is that antifuse FPGAs are one-time programmable: functional changes require a new device, so thorough simulation and a rework strategy of socketed or dual-footprint prototyping is recommended before committing production boards.
This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 A54SX32-2PQG208 — 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： A54SX32-2PQG208 （相同外形與佔位） — 差異在於 Package, Family, System Gates, Supply Voltage, Architecture.
A54SX32-2PQG208I
✅ 直接替換聯絡詢價
查看資料表 →A54SX32-P2PQG208
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX32A-2PQG208
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX16P-2PQG208I
✅ 直接替換聯絡詢價
查看資料表 →A54SX32-2PQG208 最大額定值與電氣特性
| Family | Actel SX (SX FPGA) |
| System Gates | 48000 gates |
| Equivalent Gates | 32000 gates |
| Logic Modules (Cells) | 1800 cells |
| Number of I/O | 174 |
| Maximum Toggle Frequency | 320 MHz |
| Process Technology | 0.35 um CMOS |
| 供應電壓 | 3.3 V (3 V to 3.6 V), 5 V (4.75 V to 5.25 V) |
| Programming Type | One-Time Programmable (antifuse) |
| 工作溫度 | 0C to +70C (TA) |
| 封裝 | 208-BFQFP (PQFP-208) |
| Package Dimensions | 28 x 28 x 3.4 mm |
| 安裝類型 | Surface Mount |
| Packaging | Tray |
| RoHS 狀態 | Compliant |
| Architecture | Sea-of-modules (C-cells and R-cells) |
A54SX32-2PQG208 28 x 28 x 3.4 mm 腳位配置指南
A54SX32-2PQG208（28 x 28 x 3.4 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： A54SX32-2PQG208.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX32-2PQG208 適用於 6 應用s: Industrial Control and Automation, Legacy Defense and Avionics Heritage Systems, Bus Bridging and Interface Conversion, Instant-On Glue Logic Integration, Data Acquisition and Instrumentation Timing, Medical Device Control Electronics.
Industrial Control and Automation
The A54SX32-2PQG208 fits industrial controllers because its 3.3V/5V dual-supply I/O directly bridges modern 3.3V logic with legacy 5V TTL sensor and actuator buses without level shifters, and its 174 user I/O handle wide parallel fieldbus interfaces. In a PLC or motor-control backplane, the 320 MHz-class fabric absorbs state machines, interlocks, and PWM generation in one 208-PQFP device. Because the antifuse configuration is nonvolatile, the controller is functional within nanoseconds of power-on - no configuration boot delay that could leave outputs floating. Designers should budget the one-time-programmable constraint by freezing firmware logic before production release, as field updates require device replacement rather than reflashing.
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Legacy Defense and Avionics Heritage Systems
Defense and avionics sustainment programs widely deployed Actel SX FPGAs, and the A54SX32-2PQG208 serves as a sustainment/repair component for those boards. Its antifuse fabric is immune to configuration upset from radiation-induced bit flips in the way SRAM fabrics are not, and it presents no configuration readback path, aligning with anti-tamper practices. The deterministic pin-to-pin delays of the sea-of-modules architecture simplify re-verification of legacy timing budgets when replacing a failed device. Procurement should match the original temperature grade (commercial -2 vs industrial -I) and date-code policy of the platform's qualification basis. For new defense starts, Microchip's RTAX radiation-tolerant family is the modern successor path rather than the commercial SX.
推薦
Bus Bridging and Interface Conversion
With 174 user I/O and 5V-tolerant input structures, the A54SX32-2PQG208 is well suited to bridging wide legacy parallel buses - such as VME, ISA-heritage, or backplane buses - to modern 3.3V logic. A single 208-PQFP device replaces dozens of 74-series TTL buffers, transceivers, and decoders, cutting board area, power, and assembly cost. The fine-grained C-cell/R-cell fabric maps byte-wide register files, address decoders, and handshaking logic with high utilization, while 320 MHz-class toggle performance far exceeds bus cycle rates. Because routing delays are predictable, worst-case bus timing can be signed off statically. Designers must verify per-pin drive current limits against bus loading when directly driving heavily loaded backplanes.
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Instant-On Glue Logic Integration
The A54SX32-2PQG208 consolidates random glue logic - address decoding, reset generation, chip-select maps, and bus multiplexing - into one nonvolatile device that is active the instant power is applied. Unlike SRAM FPGAs that spend milliseconds loading configuration from an external flash, the antifuse SX begins controlling reset and power-sequencing signals immediately, which matters for systems with strict reset timing requirements. The 48K-gate capacity comfortably absorbs thousands of gates of scattered SSI/MSI logic. In microprocessor systems pairing the FPGA with devices such as the MSP430FR5994, the SX can manage power-sequenced enables and watchdog logic from the first clock edge. The one-time-programmable nature rewards designs with frozen, stable logic definitions.
推薦
Data Acquisition and Instrumentation Timing
Precision instruments need deterministic trigger, sample-clock distribution, and histogram logic; the A54SX32-2PQG208 provides 320 MHz-class toggle rates and fixed routing delays that keep sample strobes aligned across the 174 I/O. Pairing the SX32 with high-resolution converters such as the ADS1220 allows the FPGA to generate serialization, busy-handshake, and averaging counters with sub-nanosecond skew predictability across the parallel bus. The antifuse fabric also avoids the configuration-lockup risk of SRAM devices during brownout events, an advantage in bench and rack instruments that cycle power frequently. Because logic is burned once, instrument firmware logic should be finalized before programming, with spare gates reserved for ECOs via a documented rework path.
推薦
Medical Device Control Electronics
Medical monitoring and diagnostic equipment benefits from the A54SX32-2PQG208's instant-on nonvolatile configuration, which guarantees that safety interlock and power-management logic is asserting correct levels from power application - a consideration for IEC 60601-class system risk analyses where uncontrolled I/O during boot is a hazard. The 5V-tolerant I/O eases integration with legacy patient-isolation and sensor front-end electronics, and the fixed timing simplifies verification artifacts required for regulatory documentation. Devices such as the TMP411 temperature sensors attach directly to FPGA-managed monitoring buses. As with all OTP FPGAs, design changes require new programmed devices, so design history files should retain the exact fuse database revision shipped with each production lot.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX32-2PQG208 — 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 | A54SX32-2PQG208I | A54SX32-P2PQG208 | A54SX32A-2PQG208 | A54SX16P-2PQG208I |
|---|---|---|---|---|---|
| Package | 208-BFQFP (PQFP-208) | 208-BFQFP - same | 208-BFQFP - same | 208-BFQFP - same | 208-BFQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 48000 | 48000 | 48000 | 48000 | 16000 class (lower) |
| Supply Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V |
| Family / Architecture | SX (antifuse, sea-of-modules) | SX - identical die | SX - identical die, faster grade | SX-A - enhanced successor, requires re-fit | SX16P - smaller class |
| Design Migration Effort | n/a (reference) | None - drop-in | None - drop-in (better timing margin) | Recompile + re-verify against SX-A timing | Re-fit design to smaller device |
主要差異化特點
- Identical-die industrial grade available (對比A54SX32-2PQG208I)
- Free timing margin upgrade (對比A54SX32-P2PQG208)
- Original SX vs SX-A successor (對比A54SX32A-2PQG208)
設計說明
Decouple the 3.3V core rail and the I/O supply separately: place at least one 10uF bulk capacitor plus 0.1uF ceramics at each of the VCCA/VCCI pin groups of the 208-PQFP, as close to the supply pins as layout allows. Estimated: at 174 switching I/O driving moderate loads, transient currents on VCCI can reach the ampere class, so a solid ground return plane under the package is essential to keep ground bounce within noise margins.
The SX family is one-time programmable. Never release the board to programming without full gate-level simulation and a pin-report cross-check against the schematic netlist, because a fuse-level error cannot be corrected in the field. Keep the Designer software fuse database under version control and record the programming file checksum for each production lot. For prototypes, program spare devices alongside each design iteration.
The 208-PQFP has 0.5 mm pin pitch; use a solder-mask-defined land pattern per the Microchip 54SX datasheet package drawing and verify paste apertures to prevent bridging on this mature large-pitch QFP. Surround the package with a continuous ground plane and tie all GND pins to it with short vias. Unused I/O should be configured with the Designer software default weak pull-up or driven low to avoid floating inputs that increase noise susceptibility.
Estimated: the SX32 in PQFP-208 dissipates on the order of a few hundred milliwatts typical for moderate toggle rates, so forced airflow is generally unnecessary. However, worst-case power depends on toggle activity and I/O loading - run the Designer power calculator with your actual design before finalizing enclosure convection assumptions, and verify junction temperature stays within the 0C to +70C commercial envelope, or select the -I industrial grade if margins are tight.
合規資訊
Newark lists 'RoHS Compliant: Yes'; PCB Electronics describes the part as LEAD FREE. Not an automotive AEC-Q100 product line. REACH/halogen-free status not stated in provided data.