A54SX32-PQ208M - 48K Gate FPGA, 174 I/O, PQFP-208 | Microchip
MPN： A54SX32-PQ208M ✓ 啟用中A54SX32-PQ208M 概覽
An FPGA (Field Programmable Gate Array) is a semiconductor device containing programmable logic blocks and interconnects that designers configure in the field, sitting in the semiconductor hierarchy as a programmable logic IC below ASICs but above CPLDs in gate count. The Actel SX family uses a sea-of-modules architecture that simplifies design time, reduces design cost and power consumption, and shortens time to market for performance-intensive applications.
Key features of the A54SX32 include 3.7 ns clock-to-out (pin-to-pin), 0.1 ns input setup time, and 0.25 ns clock skew, enabling 66 MHz PCI single-chip integration with 100% resource utilization and 100% pin locking. The 3.3 V core operation with 5.0 V tolerant inputs eases interfacing with legacy 5 V logic in industrial systems.
Technically, the device is fabricated on a 0.35 um CMOS process and offers antifuse program-once security, which makes the configuration non-volatile, non-reprogrammable by third parties, and immune to configuration readback attacks - a distinct advantage over SRAM FPGAs where bitstream security matters.
Typical applications include industrial control, 66 MHz PCI interface glue logic integration, communications equipment, and military/aerospace subsystems where non-volatile, secure, single-chip FPGA integration is required.
Design consideration: verify the exact speed-grade suffix (standard M grade versus P1/PP faster grades) against your timing closure requirements, since the M grade runs 240 MHz maximum versus faster variants.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 A54SX32-PQ208M — 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-PQ208M （相同外形與佔位） — 差異在於 Package, Family, System Gates, User I/O, Process Technology.
A54SX32-PQ208
✅ 直接替換聯絡詢價
查看資料表 →A54SX32-PQ208I
✅ 直接替換聯絡詢價
查看資料表 →A54SX32-PQG208M
✅ 直接替換聯絡詢價
查看資料表 →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 →A54SX32-PPQ208M
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX32-PQ208M 最大額定值與電氣特性
| Family | SX (54SX) FPGA |
| Equivalent System Gates | 48,000 |
| Programmable I/O Pins | 174 |
| 封裝 | 208-BFQFP (PQFP-208), 28 x 28 mm |
| Terminal Pitch | 0.5 mm |
| 安裝類型 | Surface Mount |
| Supply Voltage - Nominal | 3.3 V |
| Supply Voltage Range | 3.0 V to 3.6 V |
| I/O Tolerance | 5 V tolerant operation |
| Internal Performance | 320 MHz |
| Clock-to-Out (Pin-to-Pin) | 3.7 ns |
| Input Set-Up Time | 0.1 ns |
| Clock Skew | 0.25 ns |
| PCI Integration | 66 MHz PCI single-chip solution |
| Process Technology | 0.35 um CMOS |
| Programmability | Antifuse, one-time programmable, non-volatile |
| Pin Locking | 100% resource utilization with 100% pin locking |
| RoHS 狀態 | unknown |
A54SX32-PQ208M 208-bfqfp (pqfp-208), 28 x 28 mm 腳位配置指南
A54SX32-PQ208M（208-bfqfp (pqfp-208), 28 x 28 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-PQ208M.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX32-PQ208M 適用於 6 應用s: 66 MHz PCI Interface Integration, Industrial Control Systems, Military and Aerospace Secure Logic, Legacy 5V Logic Consolidation, Communications Equipment, Test and Measurement Instruments.
66 MHz PCI Interface Integration
The A54SX32-PQ208M was explicitly designed to serve as a 66 MHz PCI single-chip integration solution. With 3.7 ns pin-to-pin clock-to-out, 0.1 ns input setup, and 0.25 ns clock skew, the device closes timing for 66 MHz PCI host and target state machines while absorbing glue logic such as bus arbiters, decoders, and FIFOs. Its 174 programmable I/O with 5 V tolerant inputs interfaces directly with legacy PCI components, and 100% pin locking allows the PCB to be finalized before design freeze.
推薦
Industrial Control Systems
In industrial controllers and PLC I/O modules, the A54SX32-PQ208M integrates counters, encoders, communication interfaces, and sequencing logic that would otherwise require multiple CPLDs and discrete logic. The 3.3 V nominal supply with 5 V tolerant I/O allows direct connection to 24 V-system front ends conditioned by standard TTL-level circuitry. The antifuse configuration is immune to power-up configuration failures and configuration corruption from industrial noise, improving uptime compared with SRAM FPGAs in electrically harsh factory environments.
推薦
Military and Aerospace Secure Logic
The antifuse SX family is a mainstay of defense and aerospace designs where bitstream security is mandatory. Because the A54SX32-PQ208M is programmed once and holds its configuration in silicon, there is no external configuration memory to intercept and no readback path for reverse engineering. Designers use it for mission computers, sensor interfaces, and bus controllers. For space and radiation-tolerant programs, Microchip's RTAX series (e.g., RTAX1000SL) provides a radiation-hardened evolution of this architecture.
推薦
Legacy 5V Logic Consolidation
The A54SX32-PQ208M excels at replacing boards full of 5 V TTL/CMOS ASSP and PAL devices. Its 5 V tolerant inputs accept legacy signal levels directly, while 48,000 gates absorb address decoders, state machines, and bus transceivers into one 208-pin PQFP. Typical retrofits reduce board area, cut power, and improve reliability. Because the design can achieve 100% resource utilization with 100% pin locking, the migration can be executed without changing the existing backplane pin assignment.
推薦
Communications Equipment
Line cards, protocol bridges, and backplane controllers in telecom racks use the A54SX32-PQ208M for framing, multiplexing, and glue logic at up to 320 MHz internal performance. The 0.25 ns clock skew supports distributed clocking across large register banks, and instant-on antifuse configuration eliminates boot delay in equipment that must link up within milliseconds of power application. The 28 x 28 mm PQFP offers a thermally robust, hand-inspectable package suited to long-service-life telecom hardware.
推薦
Test and Measurement Instruments
Bench instruments and ATE modules deploy the A54SX32-PQ208M as a timing generator, trigger engine, and acquisition controller. The 0.1 ns input setup and 320 MHz internal performance allow fine-grained event capture, while 174 I/O connect to front-end ADCs, DACs, and panel interfaces. One-time programmability guarantees that a shipped instrument always powers up with the exact validated configuration, an advantage for calibration traceability and configuration control in metrology environments.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX32-PQ208M — 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-PQ208 | A54SX32-PQ208I | A54SX32-PQG208M | A54SX32-PPQ208M |
|---|---|---|---|---|---|
| Package | 208-BFQFP (PQFP), 28 x 28 mm | 208-BFQFP - same | 208-BFQFP - same | 208-BFQFP green - same footprint | 208-BFQFP - same |
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 48,000 | 48,000 (same die) | 48,000 (same die) | 48,000 (same die) | 32,000 equivalent / 2880 CLBs |
| Programmable I/O | 174 | 174 | 174 | 174 | 174 |
| Max Clock Frequency | 240 MHz (320 MHz internal) | 240 MHz | 240 MHz | 240 MHz | 240 MHz (P speed grade) |
| Supply Voltage | 3.0 V - 3.6 V (nominal 3.3 V), 5 V tolerant I/O | 3.3 V nominal, 5 V tolerant | 3.3 V nominal, 5 V tolerant | 3.3 V nominal, 5 V tolerant | 3.3 V nominal, 5 V tolerant |
| Temperature Grade | M grade (per suffix) | Commercial (0C to +70C) | Industrial (-40C to +85C) | M grade, green package | M grade |
| RoHS / Lead-Free Package | unknown (standard molded PQFP) | unknown | unknown | Yes (green/lead-free) | unknown |
主要差異化特點
- Mature 48K-gate antifuse security FPGA (對比A54SX32-PPQ208M)
- Lead-free package option exists (對比A54SX32-PQG208M)
- 5 V tolerant I/O on all 174 pins (對比A54SX32-PQ208I)
- Instant-on, no configuration memory (對比SRAM-based Xilinx/Altera FPGAs)
設計說明
Provide a regulated 3.3 V rail (3.0-3.6 V window) with local 0.1 uF ceramic decoupling on every VCC pin pair of the 208-pin PQFP, plus bulk 10-47 uF per bank. Antifuse FPGAs draw a programming current pulse during blow; ensure the supply can deliver the programming current specified in the family datasheet via the programmer (e.g., Silicon Sculptor). Do not share the VPP/programming supply rail with noise-sensitive analog circuitry.
The 5 V tolerant inputs still require controlled slew: terminate long backplane traces and respect the input edge-rate limits in the 54SX datasheet to avoid metastability. With 0.25 ns clock skew across the device, use balanced clock routing inside the FPGA and match trace lengths on the PCB for bus clocks above 50 MHz. Add series 22-33 ohm resistors on PCI-style outputs to control overshoot with 5 V legacy loads.
Antifuse devices are one-time programmable - a design change requires a new physical part, so fully verify timing in the Actel/Microchip Libero or Designer toolchain before programming production quantity. Confirm the exact speed-grade suffix (M vs 1, 2, P grades) against timing closure; dropping a faster grade into the same footprint is safe, but substituting a slower grade can fail timing. Keep unused I/O configured per datasheet guidance to avoid floating inputs.
合規資訊
RoHS status of the standard PQ208M package was not stated in the verified web data. For lead-free requirements, the A54SX32-PQG208M green-package variant should be evaluated.
