A54SX32A-1TQG100I - SX-A FPGA 48K Gates TQFP-100 | Microchip
MPN： A54SX32A-1TQG100I ✓ 啟用中A54SX32A-1TQG100I 概覽
An FPGA (Field-Programmable Gate Array) is a type of programmable logic IC that lets designers implement custom digital circuits after manufacturing, sitting above CPLDs and below full-custom ASICs in the programmable logic hierarchy. The SX-A family uses Actel-derived antifuse programming technology, which is one-time programmable (OTP): configuration bits are permanent, giving inherent resistance to configuration readback attacks and no need for external configuration memory at power-up.
Key features of the A54SX32A-1TQG100I include a 0.25 um process technology, a sea-of-modules architecture for high gate utilization, 2.5V low-power operation, and the speed grade -1 (fastest commercial bin in the family at 278 MHz toggle capability). Because the configuration is stored in antifuses rather than SRAM, the device powers up instantly with no configuration time and offers lower static power than SRAM FPGAs.
Technically, the SX-A architecture combines combinational logic modules (C-cells) and register modules (R-cells) in a sea-of-modules fabric, with dedicated clock resources and embedded boundary-scan test support. The -1 speed grade maximizes combinational and register performance for timing-critical paths.
Typical applications include industrial control and automation, communications and networking line cards, aerospace and defense systems where antifuse security and radiation tolerance heritage matter, and glue-logic integration replacing multiple discrete devices in a low-cost single-chip solution.
Design consideration: because the device is one-time programmable, iterate designs in silicon-costly steps; verify timing closure thoroughly in Libero/Microchip design tools before programming, and reserve the -1 speed grade budget for genuinely critical paths.
This page synthesizes distributor availability, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-09-03.
直接替換替代品，適用於 A54SX32A-1TQG100I — 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-1TQG100I （相同外形與佔位） — 差異在於 Package, System Gates, RoHS Status, Family, Operating Temperature.
A54SX32A-TQG100I
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX32A-1TQG100
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-2TQG100I
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-TQG100M
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-TQG100A
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-1TQG100M
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-1TQG100I 最大額定值與電氣特性
| Family | SX-A |
| System Gates | 48000 |
| Typical Gates | 32000 |
| Logic Modules | 1800 |
| Number of I/O | 81 |
| Max Toggle Frequency | 278 MHz |
| Speed Grade | -1 |
| Core Supply Voltage | 2.5 V |
| Process Technology | 0.25 um |
| Programming Technology | Antifuse (one-time programmable) |
| 工作溫度 | -40C to +85C (Industrial) |
| 封裝 | 100-TQFP (TQG100) |
| 安裝類型 | Surface Mount |
| Packaging | Tray |
| Lead Free | Yes (G suffix) |
A54SX32A-1TQG100I 100-tqfp (tqg100) 腳位配置指南
A54SX32A-1TQG100I（100-tqfp (tqg100) 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-1TQG100I.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX32A-1TQG100I 適用於 6 應用s: Industrial Control and Automation, Communications and Networking Line Cards, Aerospace and Defense Systems, Glue Logic Integration and BOM Reduction, Test and Measurement Instrumentation, Legacy Design Resupply and Obsolescence Bridging.
Industrial Control and Automation
The A54SX32A-1TQG100I fits industrial control and factory automation because its -40C to +85C industrial rating covers harsh cabinet environments, while 81 user I/Os absorb parallel sensor, encoder, and actuator interfaces on a single chip. In a typical PLC I/O card, the FPGA sits between backplane connectors and a microprocessor, implementing glue logic, address decoding, and handshaking that would otherwise need dozens of 74-series devices. The antifuse fabric powers up instantly in the correct configuration - there is no boot delay that could cause actuator glitches at cold start. The 278 MHz toggle capability of the -1 grade comfortably handles quadrature decoding at several MHz. Designers should budget the 2.5V core rail alongside 3.3V I/O supplies and verify timing with the -1 speed-grade library in Libero.
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Communications and Networking Line Cards
In telecom and datacom line cards, the A54SX32A-1TQG100I implements framing, multiplexing, and protocol glue logic between PHY devices and backplane processors. The -1 speed grade's 278 MHz maximum toggle frequency supports T1/E1 and legacy serial framer interfaces with margin, and 48K system gates provide enough capacity for channel aggregation logic across 1,800 logic modules. Antifuse one-time programming is an advantage here: once validated, the configuration cannot be corrupted by single-event soft errors in configuration memory, improving link uptime, and no configuration PROM occupies board space on dense cards. The 100-pin TQFP offers a practical 0.5 mm pitch for controlled-impedance routing of high-speed signals. Validate I/O switching characteristics against the SX-A datasheet AC tables for your specific I/O standard.
推薦
Aerospace and Defense Systems
Antifuse FPGAs have a long heritage in aerospace and defense, and the A54SX32A-1TQG100I inherits that lineage through Microsemi (now Microchip). The one-time-programmable fabric cannot be read back, giving inherent design-security against configuration extraction, and it contains no configuration SRAM that upsets could corrupt - valuable in high-reliability environments. The M-suffix variants in the same package family (A54SX32A-TQG100M, A54SX32A-1TQG100M) provide extended screening for such programs. Typical uses include sensor-interface preprocessing, bus bridging (MIL-STD-style parallel interfaces), and redundancy/voting logic in avionics black boxes. For new defense designs, confirm with Microchip which SX-A screening flows remain orderable, and allocate schedule margin since these are legacy devices produced on mature 0.25 um technology with constrained fab allocation.
推薦
Glue Logic Integration and BOM Reduction
A core SX-A value proposition is replacing multiple discrete logic devices with one low-cost single-chip solution. Designs consolidating address decoders, bus transceivers, state machines, and random combinational logic into the A54SX32A-1TQG100I routinely eliminate 20-50 SSI/MSI packages, cutting board area, assembly cost, and failure points. With 32,000 typical gates and 81 I/Os, one TQFP-100 device absorbs what previously required several PLDs plus TTL, and the 278 MHz -1 grade leaves generous timing margin over legacy 5V-era logic speeds. Because the part is one-time programmable, prototype iterations consume a new unit per change, so consolidate design changes before each programming run. XAIPART stocks the full A54SX32A package family so you can move between TQFP-100 and larger-pin alternatives as I/O needs grow.
推薦
Test and Measurement Instrumentation
Bench instruments and rack modules benefit from the A54SX32A-1TQG100I's combination of deterministic power-up and flexible I/O. In a data-acquisition front end, the FPGA performs trigger logic, counter/timer functions, and parallel-to-serial packing between ADCs and a controller; the -1 grade's 278 MHz toggle rate supports precise time-interval measurement resolution in the tens-of-nanoseconds regime and beyond with carry-chain techniques. The antifuse fabric contributes no configuration-readout jitter or boot sequence, so measurement chains start in a known state immediately at power-on - important for rack systems that must be measurement-ready instantly. 81 user I/Os interface ADC buses, front-panel controls, and backplane links. Designers should place the 2.5V core regulator close to the device and follow the SX-A datasheet power-decoupling guidance for low-noise analog proximity.
推薦
Legacy Design Resupply and Obsolescence Bridging
Thousands of fielded boards designed between 1998 and 2010 specify the A54SX32A family, and the A54SX32A-1TQG100I remains the standard resupply choice for maintenance, repair, and overhaul (MRO) programs. The part is still active at Microchip, and Octopart tracks 6 distributors, but allocation can tighten; securing buffer stock through XAIPART protects production continuity. Because the antifuse die and package have not changed, a newly purchased unit programmed with the archived bitstream from the original design database is a true form-fit-function replacement. MRO teams should archive the original Libero/Designer project files and programming files alongside the BOM, and qualify the G (lead-free) suffix version for any board revised after RoHS deadlines. Where exact speed-grade stock is scarce, the pin-compatible A54SX32A-TQG100I is the verified cross-reference fallback.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX32A-1TQG100I — 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-TQG100I | A54SX32A-1TQG100 | A54SX32A-2TQG100I | A54SX32A-TQG100M |
|---|---|---|---|---|---|
| Package | 100-TQFP (TQG100) | 100-TQFP (TQG100) - same | 100-TQFP (TQG100) - same | 100-TQFP (TQG100) - same | 100-TQFP (TQG100) - same |
| Brand | Microchip Technology (Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 48000 | 48000 | 48000 | 48000 | 48000 |
| User I/O | 81 | 81 | 81 | 81 | 81 |
| Speed Grade / Max Toggle | -1 / 278 MHz | Standard / ~238 MHz | -1 / 278 MHz | -2 / slower than -1 | Standard / ~238 MHz |
| Core Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
| Lead-Free Plating | Yes (G suffix) | Yes (G) | No (non-G) | Yes (G) | Yes (G) |
| Programming Technology | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) |
主要差異化特點
- Fastest -1 speed grade in the TQFP-100 A54SX32A lineup (對比A54SX32A-TQG100I)
- Lead-free G-suffix plating for RoHS-era builds (對比A54SX32A-1TQG100)
- Instant power-up with no external configuration memory (對比SRAM FPGAs of similar gate count)
設計說明
The A54SX32A-1TQG100I runs a 2.5V core; I/O banks support lower-voltage standards per the SX-A datasheet. Provide independent, well-decoupled rails: place 0.1uF ceramic capacitors at each VCC/VCCA pin pair plus bulk 10uF near the device. Estimated: static antifuse power is low (no configuration SRAM leakage path like SRAM FPGAs), but dynamic power scales with toggle rate - use the Microchip SX-A power calculator with your post-place-and-route netlist rather than assuming worst-case values. Ensure the 2.5V regulator can supply programming current margin during antifuse burn-in if in-system programming is used.
This device is one-time programmable: there is no reflash. Every design change requires a fresh programmed unit, so complete full functional verification and static timing analysis (with the -1 speed-grade library at worst-case industrial corners) before committing to a programming run. A second common pitfall is mixing speed grades in one BOM - the A54SX32A-TQG100I (standard, ~238 MHz) is not timing-equivalent to the -1 (278 MHz); substituting silently can break marginal paths. Verify the orderable suffix (I/M/A temperature grade and G plating) against your program requirements before purchase.
The 100-pin TQFP has 0.5 mm lead pitch with gull-wing leads. Use 0.2 mm stencil aperture reduction on lead tips to prevent bridging, and add via-stitched thermal relief per the SX-A datasheet thermal characteristics table for the TQG100 package. Keep the dedicated programming/test pins routed to a header or test point because antifuse devices cannot be reprogrammed in-circuit after failure analysis. Decouple every VCC pin individually - the TQFP power pins are distributed around the ring, and sharing a single decoupling network degrades high-frequency supply impedance.
合規資訊
The G suffix in A54SX32A-1TQG100I indicates lead-free plating per distributor listings (PCB Electronics: LEAD FREE). Formal RoHS/REACH certificates must be obtained from Microchip; not confirmed in provided web data.
