A54SX32A-1PQG208M - 48K Gate SX-A FPGA, PQFP-208 | Microchip
MPN： A54SX32A-1PQG208M ✗ 停產A54SX32A-1PQG208M 概覽
An FPGA (Field-Programmable Gate Array) is a programmable logic device that implements custom digital circuits through configurable logic blocks and routing. The SX-A family uses Actel's antifuse programming technology, meaning interconnects are permanently programmed at power-up in one-time-programmable (OTP) fashion - unlike SRAM FPGAs, there is no configuration ROM needed and the bitstream cannot be read back, providing inherent design security and instant-on behavior.
Key features include the sea-of-modules architecture composed of combinatorial cells (C-cells) and register cells (R-cells), which minimizes chip area lost to routing and delivers gate utilization and performance approaching ASIC efficiency. The 278 MHz toggle rate supports performance-intensive glue logic, bus interfaces, and state machines, while the antifuse fabric keeps static power low.
Technically, the device integrates multiple board-level functions into a single low-cost chip; Absolute Maximum Ratings from the SX-A family datasheet list VCCI (I/O supply) at -0.3 V to +6.0 V DC. The PQFP-208 surface-mount package suits reflow assembly on standard PCB processes.
Typical applications include industrial control glue logic, communications line-card interfaces, legacy defense and avionics system sustainment, and test equipment where single-chip integration and design security matter.
Design consideration: because SX-A devices are OTP, verify the design thoroughly in simulation before programming; no in-circuit reconfiguration is possible.
This page synthesizes verified distributor data, drop-in family alternatives, and practical design guidance not found in the manufacturer datasheet.
直接替換替代品，適用於 A54SX32A-1PQG208M — 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： A54SX32A-1PQG208M （相同外形與佔位） — 差異在於 Package, System Gates, Process Technology, RoHS Status, Family.
A54SX32A-1PQG208I
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-1PQG208I
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-2PQG208
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX32-1PQG208M
✅ 直接替換聯絡詢價
查看資料表 →A54SX32-2PQG208I
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-1PQG208M 最大額定值與電氣特性
| Family | SX-A |
| System Gates | 48000 gates |
| Logic Blocks (CLBs) | 2880 |
| User I/O | 174 |
| Toggle Frequency | 278 MHz (typical) |
| Speed Grade | -1 |
| 封裝 | 208-BFQFP / PQFP-208, 0.5 mm pitch |
| 安裝類型 | Surface Mount |
| Programming Technology | Antifuse (One-Time Programmable) |
| VCCI Absolute Maximum (DC) | -0.3 V to +6.0 V |
| Architecture | Sea-of-modules (C-cells and R-cells) |
| RoHS 狀態 | Lead Free (per distributor listing) |
A54SX32A-1PQG208M 208-bfqfp / pqfp-208, 0.5 mm pitch 腳位配置指南
A54SX32A-1PQG208M（208-bfqfp / pqfp-208, 0.5 mm pitch 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： A54SX32A-1PQG208M.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX32A-1PQG208M 適用於 6 應用s: Industrial Control Glue Logic, Defense and Avionics Legacy Sustainment, Communications Line-Card Interfaces, Test and Measurement Equipment, Single-Chip System Integration, Secure Control and Copy-Protected Designs.
Industrial Control Glue Logic
In factory automation and PLC-style controllers, boards commonly need address decoding, bus arbitration, and I/O expansion between a microprocessor and peripheral devices. The A54SX32A-1PQG208M fits this role with 48K system gates and 174 user I/O in the 208-pin PQFP, providing enough capacity to consolidate dozens of 74-series devices into a single chip. Its antifuse fabric powers up instantly with the configuration already burned into silicon, so no microcontroller boot dependency exists for logic bring-up, and the 278 MHz-class toggle performance comfortably covers processor bus timing at industrial clock rates. Because the M-ordered device is obsolete, industrial sustainment programs should pair this MPN with the industrial-range A54SX32A-1PQG208I drop-in variant to secure temperature-qualified stock while inventory remains available.
推薦
Defense and Avionics Legacy Sustainment
Actel SX-A FPGAs were widely designed into defense, avionics, and space-adjacent subsystems precisely because antifuse OTP programming prevents bitstream readback - a design-security property that legacy programs still value. The A54SX32A-1PQG208M with 2880 CLBs and 174 I/O supports interface conversion, telemetry framing, and custom peripheral logic in these platforms. For long-lifecycle programs, sustainment teams typically perform a last-time-buy across the PQ208 ordering variants (commercial M, industrial I, and faster -2 grades) since the die is identical and designs recompile unchanged. When stock is finally exhausted, a functional migration to Microchip's RTG4 or PolarFire families is required, which entails PCB redesign; the drop-in family variants therefore represent the lowest-risk bridge for maintaining certified hardware in the field.
推薦
Communications Line-Card Interfaces
Telecom and datacom line cards historically used SX-A devices for framing, error checking, and backplane interface glue logic. The A54SX32A-1PQG208M's sea-of-modules architecture delivers deterministic, ASIC-like timing on every path - unlike SRAM FPGA routing whose delays vary with layout - which simplifies meeting fixed backplane setup/hold budgets. With 174 user I/O in the 0.5 mm pitch PQFP-208, it interfaces parallel PHY buses and backplane connectors directly. The antifuse technology also contributes low static power, important in racks populated with hundreds of line cards. Sustainment engineering teams maintaining these systems should qualify A54SX32A-1PQG208I as the drop-in procurement part and A54SX32A-2PQG208 where timing margin at higher line rates is needed, both sharing the identical footprint and pinout.
推薦
Test and Measurement Equipment
Bench instruments, ATE fixtures, and protocol analyzers use mid-density FPGAs for pattern generation, capture buffering, and bus emulation. The A54SX32A-1PQG208M provides 48K gates and 278 MHz-class toggling, sufficient for parallel pattern engines and counter/timer arrays, while instant-on antifuse configuration means the instrument's logic is active the moment power is applied - useful for test fixtures that must be deterministic at first clock edge. The PQFP-208's gull-wing leads simplify rework during fixture iteration compared with BGA packages. Because the design is OTP, instrument makers validate via simulation before programming spare devices; XAIPART stocks and sources the full PQ208 variant set (M, I, and -2 speed grades) so fixture programs can hold a common footprint across all build sites and temperature environments.
推薦
Single-Chip System Integration
A primary SX-A value proposition, stated by Microchip, is generating system-wide savings by integrating multiple functions into a low-cost, single-chip solution. Boards carrying several PLDs, PALs, and discrete glue logic can consolidate them into the A54SX32A-1PQG208M's 48K gates and 174 I/O, cutting BOM count, assembly cost, and board area while raising reliability through reduced solder-joint count. The secure, non-readable antifuse configuration also protects proprietary integration IP - unlike flash or SRAM alternatives that expose configuration data. This consolidation pattern remains valid for legacy boards being value-engineered: replace the consolidated content with the same PQ208 die variant already qualified (A54SX32A-1PQG208I or -2PQG208) rather than re-architecting, preserving mechanical and electrical qualification while simplifying procurement to a single active-stock MPN.
推薦
Secure Control and Copy-Protected Designs
Applications that embed proprietary control algorithms - licensed-equipment controllers, encryption-adjacent key management peripherals, and branded appliance logic - benefit from the SX-A's OTP security model: the programmed antifuse netlist cannot be read back, so reverse engineering requires invasive decapping at prohibitive cost. The A54SX32A-1PQG208M offers 48K gates of capacity for such logic with instant-on behavior and no configuration-memory attack surface. Engineering teams continuing these product lines should note that procurement risk, not technical risk, is now the main concern: the part is discontinued, so build buffer stock through XAIPART's broker-verified sourcing, and consider the pin-compatible A54SX32A-1PQG208I as the primary purchasing part number since industrial-range stock tends to remain available longer in excess channels than commercial M-grade devices.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX32A-1PQG208M — 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 | A54SX32A-1PQG208I | A54SX32A-1PQG208 | A54SX32A-2PQG208 | A54SX32-1PQG208M | A54SX32-2PQG208I |
|---|---|---|---|---|---|---|
| Package | PQFP-208 (BFQFP, 0.5 mm pitch) | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same |
| Brand | Microchip Technology (Actel) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 48000 | 48000 | 48000 | 48000 | 36000 class (SX die) | 36000 class (SX die) |
| Speed Grade | -1 | -1 | -1 | -2 (faster) | -1 (SX family) | -2 (SX family) |
| Programming Technology | Antifuse OTP | Antifuse OTP | Antifuse OTP | Antifuse OTP | Antifuse OTP | Antifuse OTP |
| Lifecycle Status | Obsolete (broker/excess stock) | Obsolete (broker/excess stock) | Obsolete (broker/excess stock) | Obsolete (broker/excess stock) | Obsolete (broker/excess stock) | Obsolete (broker/excess stock) |
主要差異化特點
- Full 48K-gate capacity on the enhanced SX-A die (對比A54SX32-1PQG208M)
- Identical footprint with industrial temperature option (對比A54SX32A-1PQG208I)
- Faster timing without board change (對比A54SX32A-2PQG208)
- OTP security vs reprogrammable architectures (對比A54SX32-2PQG208I)
設計說明
SX-A devices are one-time programmable: once the antifuse array is burned, the device cannot be erased or reprogrammed. Always complete gate-level simulation and timing closure (Microchip Designer/Libretime flow) before programming production devices, and program one pilot unit from each lot for system validation. Ordering the wrong temperature grade (M commercial vs I industrial) cannot be corrected by reprogramming - verify the full ordering code on purchase orders, since broker stock of this obsolete part frequently mixes date codes and grades.
Per the SX-A family datasheet, the I/O bank supply VCCI has an absolute maximum DC rating of -0.3 V to +6.0 V. Power VCCI and the core supply VCCA from clean rails and observe the datasheet power-up ordering/ ramp requirements before connecting programmer hardware. Because antifuse fabric draws no configuration current at power-up, inrush is dominated by I/O charging of board capacitance; size bulk decoupling per the datasheet power-supply recommendations rather than SRAM-FPGA heuristics, which overestimate.
The PQFP-208 has 0.5 mm lead pitch with gull-wing leads - inspect solder joints with X-ray or angled optical AOI, and define the land pattern per the package drawing in the SX-A datasheet. Keep unused I/O configured per the datasheet default and tie unused banks' grounds solidly. When qualifying drop-in variants (1PQG208I / 2PQG208), no footprint or assembly change is required; only incoming inspection of date codes and grade markings differs.
合規資訊
Distributor listing (Kynix) identifies A54SX32A-1PQG208M as LEAD FREE. RoHS/REACH declarations unavailable for this discontinued part; request certificates from Microchip for regulatory programs.
