A54SX16A-2PQG208 - 24K Gate Antifuse FPGA, 208-PQFP | Microchip
MPN： A54SX16A-2PQG208 ✓ 啟用中A54SX16A-2PQG208 概覽
An FPGA (Field-Programmable Gate Array) is a semiconductor device containing a matrix of configurable logic blocks interconnected by programmable fabric, allowing designers to implement custom digital circuits after manufacturing. Within the programmable logic hierarchy, the SX-A family belongs to the one-time-programmable (OTP) antifuse category, sitting alongside SRAM-based and flash-based FPGAs as a power-management and integration solution in embedded systems.
Key features include 0.22 um / 0.25 um CMOS antifuse technology for low power and high security, support for 2.5 V, 3.3 V, and 5 V I/O standards, and a speed grade of -2. Because antifuse interconnects are permanently set at programming time, the device offers non-volatile configuration with no external boot flash, low static power consumption, and strong resistance to design theft compared with SRAM FPGAs.
The SX-A architecture uses a sea-of-modules fabric with C-cells and R-cells that combine combinatorial and sequential logic efficiently, achieving high utilization and fast predictable routing. Typical system speeds of approximately 100-250 MHz are attainable for common designs, with the 294 MHz figure representing the maximum toggle rate of the logic fabric.
Typical applications include industrial control, military and aerospace glue logic, bus interfacing, protocol bridging, and single-chip integration of ASIC prototypes where cost, security, and low power matter more than reprogrammability.
Designers should note that the device is one-time programmable: the design must be fully verified before programming, and design changes require a new device. Adequate power supply decoupling and careful I/O bank voltage planning are essential.
This page synthesizes distributor pricing context, drop-in alternatives, pinout guidance, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 A54SX16A-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： A54SX16A-2PQG208 （相同外形與佔位） — 差異在於 Package, Process Technology, Family, RoHS Status, System Gates.
A54SX16-2PQG208
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查看資料表 →A54SX16A-2PQG208 最大額定值與電氣特性
| Family | SX-A (Actel/Microsemi/Microchip) |
| System Gates | 24000 |
| Logic Cells (CLBs) | 1452 |
| Typical Gates Available | 16000 |
| Maximum Toggle Frequency | 294 MHz |
| User I/O | 175 |
| Process Technology | 0.22 um / 0.25 um CMOS antifuse |
| Programming Type | One-Time Programmable (antifuse) |
| I/O Voltage Support | 2.5 V / 3.3 V / 5 V |
| Speed Grade | -2 |
| 封裝 | PQFP-208 (208-BFQFP) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| Configuration Storage | Non-volatile (no external boot device) |
A54SX16A-2PQG208 pqfp-208 (208-bfqfp) 腳位配置指南
A54SX16A-2PQG208（pqfp-208 (208-bfqfp) 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： A54SX16A-2PQG208.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX16A-2PQG208 適用於 6 應用s: Industrial Control and Automation, Military and Aerospace Glue Logic, ASIC Prototyping and Bridge Integration, Bus Interfacing and Protocol Bridging, Low-Power Secure Embedded Systems, Test, Measurement and Legacy Sustainment.
Industrial Control and Automation
The A54SX16A-2PQG208 fits industrial controllers because its 24,000 gates and 175 user I/Os integrate PLC glue logic, encoders, and bus interfaces into one 208-pin PQFP, cutting board count. The 5 V-tolerant I/O support directly connects to legacy 5 V industrial signals without level shifters, while the 0.25 um antifuse fabric draws low static power for always-on control cabinets. Its one-time-programmable non-volatile configuration means the controller boots instantly with no external configuration flash, improving uptime. With a 294 MHz maximum toggle rate, state machines and counters run comfortably at industrial clock rates; designers should budget I/O bank voltages across the three supported rails (2.5/3.3/5 V) during pin planning.
推薦
Military and Aerospace Glue Logic
Antifuse FPGAs are a mainstay of defense programs because the programmed interconnect cannot be read back, providing inherent design security, and the non-volatile fabric survives radiation-induced configuration upsets better than SRAM alternatives. The A54SX16A-2PQG208 offers 1452 logic cells for address decoding, bus bridging, and protocol adaptation around processors, with the -2 speed grade delivering up to 294 MHz fabric toggle for fast synchronous interfaces. No boot PROM removes a reliability liability in flight hardware. Industrial-temperature I-suffix variants of the same 208-pin footprint support harsher environments. Verify the specific program's temperature screening and qualification requirements, since this commercial-grade PQFP is not inherently space-qualified.
推薦
ASIC Prototyping and Bridge Integration
The SX-A family is marketed by Microchip as a single-chip integration platform that replaces multi-chip MSI/SSI logic, and the A54SX16A-2PQG208's 24,000 gates accommodate address decoders, FIFOs, and interface converters that historically preceded ASIC tape-out. The 0.22/0.25 um CMOS antifuse process yields deterministic timing comparable to a masked gate array, which makes it useful as a bridge device while an ASIC is in fabrication. 175 I/Os with 2.5/3.3/5 V support interface to mixed-voltage prototype boards directly. Because the device is one-time programmable, complete RTL simulation and timing closure in Actel Designer are mandatory before programming; design changes require new silicon, so plan spare devices into the prototype budget.
推薦
Bus Interfacing and Protocol Bridging
With 175 user I/Os and 5 V tolerance, the A54SX16A-2PQG208 directly terminates legacy backplane buses (VME-style, ISA-era, and proprietary parallel buses) that modern SRAM FPGAs cannot touch without protection networks. The 1452 logic cells implement bus arbiters, transceivers, and width converters, while the 294 MHz fabric ceiling supports fast synchronous strobe handling. Non-volatile antifuse configuration means the bridge is active the instant power is applied - important in systems where a host processor expects the bus at power-up. Designers should decouple each I/O bank supply (2.5/3.3/5 V) separately with 0.1 uF ceramics per pin group and verify 5 V drive-current limits in the SX-A datasheet I/O tables.
推薦
Low-Power Secure Embedded Systems
The SX-A antifuse architecture stores configuration in physical interconnect fuses, so the A54SX16A-2PQG208 consumes no configuration-memory read power and presents no bitstream to steal - a key advantage in secure and battery-backed embedded products. Static power in 0.25 um CMOS is low, and the 208-pin PQFP dissipates modest power for typical glue-logic utilization, simplifying thermal design on sealed enclosures. Non-volatility eliminates boot time, which matters in metering, security, and telemetry nodes that must respond at power-on. Trade-off: no field updates - firmware fixes require board-level device replacement, so pair with a microcontroller (for example MSP430 family parts) for updatable system logic and keep the FPGA to stable, verified functions.
推薦
Test, Measurement and Legacy Sustainment
Test equipment vendors sustain legacy instrument platforms for decades, and the A54SX16A-2PQG208 is frequently the programmable logic in such designs. Its deterministic antifuse timing (0.25 um CMOS, 294 MHz max toggle) supports repeatable trigger and counter paths, while 175 I/Os connect front-end boards, displays, and backplanes in one package. Replacing failing SRAM or older PLD devices with this non-volatile FPGA removes configuration-PROM failure modes that are common field-return causes in instruments. For end-of-life sustainment, qualify the same-footprint A54SX16-2PQG208 and I-suffix variants as second sources now, before the last-time-buy window closes, and archive Libero/Designer project files with programming files and device revision records.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX16A-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 | A54SX16-2PQG208 | A54SX16-1PQG208 | A54SX16P-PQG208 |
|---|---|---|---|---|
| Brand | Microchip Technology (Actel/Microsemi heritage) | Microchip Technology (Actel) | Microchip Technology (Actel) | Microchip Technology (Actel) |
| Package | PQFP-208 | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same |
| Logic Cells | 1452 | 1452 (SX16 fabric) | 1452 (SX16 fabric) | 1452 (SX16P fabric) |
| System Gates | 24000 | 24000 equivalent | 24000 equivalent | 24000 equivalent |
| Programming Type | One-time programmable antifuse (non-volatile) | Antifuse OTP | Antifuse OTP | Antifuse OTP |
主要差異化特點
- Highest speed grade (-2, 294 MHz) in the 208-pin 16K family (對比A54SX16-1PQG208)
- Broadest I/O voltage flexibility in same footprint (對比A54SX16P-PQG208)
- Instant-on non-volatile configuration (對比SRAM FPGAs (Xilinx/Altera same era))
設計說明
The SX-A family supports separate I/O bank voltages of 2.5 V, 3.3 V, and 5 V. Plan pin assignments so that all I/Os sharing a bank operate at the same VCCI, and decouple each supply rail with 0.1 uF ceramic capacitors at every VCCI pin group plus bulk capacitance per rail. Because the antifuse fabric is non-volatile, inrush is dominated by I/O switching, not configuration; still, sequence core and I/O supplies per the SX-A datasheet power-up requirements to avoid latch-up on 5 V-tolerant pins during mixed-rail startup.
This device is one-time programmable: blown antifuses cannot be reverted, so a functional bug after programming means scrapping the device. Complete RTL simulation, post-place-and-route timing simulation, and a formal sign-off review in Actel Designer/Libero before submitting any unit to the programmer. Order at least 10-15% spare devices above build quantity to absorb re-spins, and archive the Designer project plus generated programming files so future builds reproduce the identical bitstream.
The 208-pin PQFP has a 0.5 mm pin pitch typical of this package class; use a footprint matching the Microchip/Actel mechanical drawing with slightly elongated pads to aid alignment and rework. Route high-speed clock inputs short and direct with series termination if trace length exceeds a few centimeters. Provide good thermal relief via the PQFP's dissipation through leads - add ground planes for heat spreading - and follow the SX-A datasheet thermal characteristics table (which notes that theta depends on board copper, airflow, and ambient) when estimating junction temperature.
When driving 5 V legacy buses, check the SX-A I/O DC characteristics for drive and sink limits rather than assuming full TTL fanout at every pin; distribute heavy loads across multiple I/Os or add external buffering. For mixed-voltage designs, keep 5 V-driven nets away from 2.5 V bank traces on adjacent layers to limit crosstalk, and series-terminate long parallel bus runs (22-33 ohm) to control ring-back on the 294 MHz-capable fabric edges.
合規資訊
Distributor listings (FindIC, Jotrin) state 'ROHS COMPLIANT, PQFP208, PLASTIC'. REACH, lead-free finish, halogen-free, and conflict-minerals status were not stated in the reviewed data - verify via Microchip product pages or PCN documents.
