A54SX32-TQ144M - 32K Gate FPGA, 240MHz, TQFP-144 | Microchip
MPN： A54SX32-TQ144M ✗ 停產A54SX32-TQ144M 概覽
An FPGA (Field-Programmable Gate Array) is a semiconductor device that implements digital logic through programmable interconnect and configurable logic blocks, sitting within the broader hierarchy of programmable logic ICs alongside CPLDs and ASICs. The Actel SX family pioneered a sea-of-modules architecture, in which a dense array of logic modules is surrounded by routing resources, providing ASIC-like gate utilization and timing predictability without the NRE cost and lead time of a mask-programmed device.
Key features include 32,000 equivalent system gates organized in 1,800 logic modules (2,880 CLB-equivalent cells), a maximum toggle rate of 240 MHz (up to 350 MHz for the -3 speed grade per Microchip documentation), and dual 3.3V/5V-tolerant I/O operation. The antifuse programming technology is one-time programmable, giving the device inherent resistance to configuration readback attacks and SEU-sensitive configuration memory issues that affect SRAM FPGAs.
Technical depth: the sea-of-modules architecture uses two types of logic modules (C-cells for combinatorial logic and R-cells for registers) connected through a segmented routing fabric, enabling deterministic, short interconnect delays that made the SX family popular for high-speed state machines, bus interfaces, and glueless CPU support logic in embedded systems.
Typical applications include industrial control and automation backplanes, aerospace and defense subsystems requiring non-volatile, power-up-immediate logic, communications line cards, and legacy design sustainment where the original Actel SX design files are still deployed.
Design consideration: because the device is one-time programmable and antifuse-based, programming must be performed after assembly on the target board via the JTAG port; plan in-system programming access and verify the final netlist before burn, as rework is not possible.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet, with pricing verified as of 2026-09-03.
直接替換替代品，適用於 A54SX32-TQ144M — 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-TQ144M （相同外形與佔位） — 差異在於 Package, Family, System Gates, RoHS Status, Process Technology.
A54SX32-TQG144M
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →A54SX32-TQG144I
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →A54SX32-1TQG144I
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →A54SX32-2TQG144I
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →A54SX32-3TQ144M
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX32-1TQG144
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →A54SX32-TQ144M 最大額定值與電氣特性
| Logic Family | Actel SX (54SX) |
| System Gates | 32000 gates |
| Logic Modules | 1800 modules |
| CLB Equivalent Cells | 2880 |
| 最大時脈頻率 | 240 MHz |
| Process Technology | 0.35 um CMOS |
| 供應電壓 | 3.3 V / 5 V |
| User I/O | 113 I/O |
| Programming Technology | Antifuse (one-time programmable) |
| Architecture | Sea-of-modules |
| 封裝 | 144-TQFP |
| Package Body Size | 20 x 20 mm, 0.5 mm pitch |
| 安裝類型 | Surface Mount |
| JESD-30 Code | S-PQFP-G144 |
A54SX32-TQ144M 20 x 20 mm, 0.5 mm pitch 腳位配置指南
A54SX32-TQ144M（20 x 20 mm, 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： A54SX32-TQ144M.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX32-TQ144M 適用於 6 應用s: Industrial Control and Automation, Aerospace and Defense Subsystems, Communications Line Cards, Legacy Design Sustainment, Test and Measurement Instrumentation, Embedded Processor Support Logic.
Industrial Control and Automation
The A54SX32-TQ144M fits industrial backplane and automation-controller logic because its 240 MHz standard-grade timing covers high-speed state machines, PLC I/O decode, and motor-control sequencing, while 5V-tolerant I/Os on 113 pins interface directly with legacy 5V sensor and actuator buses without level shifters. The antifuse fabric powers up instantly with its configuration permanently burned in, so a controller boots into deterministic logic with no configuration device or boot delay - important for safety interlocks that must be live at power-on. Designers typically place the device between a microprocessor local bus and field I/O, using the deterministic sea-of-modules routing to guarantee fixed bus-interface timing. The trade-off is one-time programmability: any logic change requires a new part, so freeze and archive the locked netlist.
推薦
Aerospace and Defense Subsystems
Antifuse FPGAs like the A54SX32-TQ144M are historically favored in defense electronics because the one-time-programmable configuration contains no SRAM configuration memory to upset, read back, or corrupt - a meaningful resilience and anti-tamper property for satellite payloads, radar interface boards, and missile-guidance support logic. The instant-on, non-volatile behavior eliminates configuration boot sequencing in systems where power cycles are short and timing-critical, and the sea-of-modules architecture yields deterministic, ASIC-like routing delays that simplify worst-case timing sign-off. Industrial-grade variants (I suffix) extend ambient range for conduction-cooled enclosures. The trade-off is that the 0.35 um process predates modern radiation-hardened flows; for rad-hard applications Microchip's RTAX family (e.g., RTAX2000S) is the designed successor.
推薦
Communications Line Cards
In telecom and datacom line cards, the A54SX32-TQ144M serves as high-speed glue logic: backplane transceiver framing, clock-domain bridging, and bus arbitration where the 240 MHz toggle rate and short, deterministic interconnect delays of the sea-of-modules fabric outperform contemporary SRAM FPGAs of the same era. Its 113 user I/Os in a compact 20 x 20 mm TQFP provide enough pins to bridge a processor local bus, a backplane connector, and onboard peripherals without a larger footprint. Because configuration is non-volatile, line cards come up functional immediately on hot-swap or reset, simplifying system bring-up. Designers should budget I/O standards carefully - the device is 3.3V/5V tolerant but not programmable-IO-standard-rich like modern FPGAs - and verify signal-integrity on long backplane traces with series termination.
推薦
Legacy Design Sustainment
A large installed base of Actel SX designs still ships today, and the A54SX32-TQ144M is the primary sustainment path for those boards. Because the antifuse netlist is locked, an identical replacement part programmed with the archived, locked design file reproduces the original timing exactly - no recompilation, no timing re-verification, no regression risk. Sustainment teams should prioritize three actions: archive the locked netlist and programming files, qualify pin-compatible variants (A54SX32-TQG144M for RoHS builds, -1/-2 speed grades) against supply risk, and buy the full remaining lifetime quantity in one event since this mature family has finite stock. Heisener reported roughly 6,240 pieces in stock as of 2026-09-03, underscoring the need for last-time-buy planning.
推薦
Test and Measurement Instrumentation
Bench and automated test equipment uses the A54SX32-TQ144M for timing generators, trigger logic, and bus-interface sequencing where deterministic gate delays matter for measurement repeatability. The sea-of-modules architecture produces fixed, short interconnect delays, so a timing pattern generated through the fabric has jitter and skew characteristics that do not shift between builds - a property SRAM FPGAs of the same vintage could not guarantee after recompilation. The 240 MHz standard grade (350 MHz with the -3 speed grade variant) covers common counter/timer and pattern-generator clock domains, and 113 I/Os interface with relays, comparators, and instrument backplanes. The one-time-programmable flow suits calibration-controlled instruments: the shipped logic image is permanently fixed and auditable.
推薦
Embedded Processor Support Logic
The A54SX32-TQ144M is widely used as processor companion logic: address decoders, interrupt controllers, wait-state generators, and DMA request logic glued around embedded CPUs. Its 5V-tolerant, 3.3V/5V I/O directly matches the voltage worlds of legacy microprocessors and microcontrollers, eliminating bus-transceiver glue in mixed-voltage boards. With 32,000 gates and 1,800 modules, the device absorbs functions that would otherwise occupy many discrete 74-series devices, reducing BOM count and board area in the 20 x 20 mm TQFP. Deterministic routing means bus-setup and hold timing to the CPU can be signed off once and locked. Designers should register all asynchronous CPU inputs inside the fabric and use the enable/reset resources conservatively, since antifuse fabric cannot be reconfigured to fix sequencing bugs after programming.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX32-TQ144M — 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-TQG144M | A54SX32-1TQG144I | A54SX32-3TQ144M |
|---|---|---|---|---|
| Package | 144-TQFP | 144-TQFP - same | 144-TQFP - same | 144-TQFP - same |
| Brand | Microchip Technology (Microsemi/Actel) | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 32000 gates | 32000 gates | 32000 gates | 32000 gates |
| User I/O | 113 I/O | 113 I/O | 113 I/O | 113 I/O |
| Supply Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
| Programming Technology | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) |
主要差異化特點
- One-time-programmable antifuse configuration (對比XC4000XL-series SRAM FPGAs)
- Higher speed grade available in the same footprint (對比A54SX32-1TQG144I)
- Deterministic ASIC-like routing delays (對比Same-era SRAM FPGA architectures)
- Trade-off: not reprogrammable (對比Modern SRAM FPGAs)
設計說明
The A54SX32 is one-time programmable: once antifuses are burned, the configuration cannot be erased or corrected. Always complete full functional and timing sign-off on the routed netlist in Libero/Designer before programming production units, and archive the locked design file. A single pin-assignment error discovered after programming means scrapping the device. Budget one engineering programming cycle plus yield loss (typically a few percent) when computing per-unit cost.
The 144-TQFP has a 0.5 mm lead pitch; specify a non-solder-mask-defined footprint per the package mechanical drawing in the Microchip 54SX datasheet and use a 1:1 stencil with 0.1-0.125 mm laser-cut apertures to avoid bridging on the fine-pitch quad leads. Provide solid power and ground planes; connect every VCC/GND pin pair with 0.1 uF ceramic decoupling placed within 3 mm of the pin. Do not route fast clocks under the package center without a ground return via.
The device operates at 3.3V or 5V on a 0.35 um CMOS process. Verify I/O bank voltage compatibility: 5V-tolerant inputs must not be driven above the absolute maximum even when the core runs at 3.3V. Because dynamic power scales with toggle rate, high-activity clock trees at 240 MHz dominate consumption; per Microchip product literature the family emphasizes low power versus SRAM FPGAs, but confirm exact ICC for your design using the power estimation tooling in Libero. Sequence power monolithically - no rail-order requirements exist for antifuse silicon.
With 113 user I/Os driving backplane-scale loads, add 22-33 ohm series termination on outputs driving traces longer than roughly 1/6 rise-time equivalent electrical length. Antifuse routing delays are deterministic, so once termination is characterized on a prototype the timing holds across all production units - a genuine advantage over recompiled SRAM FPGA builds. Keep JTAG (TDI/TMS/TCK/TDO) traces short with 10 kohm pull-ups on TMS and TDI to guarantee reliable in-system programming after board assembly.
合規資訊
Compliance status for this exact ordering code was not stated in the verified web data. Note that the related ordering code A54SX32-TQG144M denotes the RoHS/lead-free package finish revision; verify current compliance certificates with Microchip for this legacy device.
