A54SX72A-1CQ256 - SX-A 108K-Gate Antifuse FPGA | Microchip
MPN： A54SX72A-1CQ256 ✓ 啟用中A54SX72A-1CQ256 概覽
An FPGA (Field-Programmable Gate Array) is a semiconductor device containing a matrix of configurable logic blocks and programmable interconnects that the designer wires together after manufacturing. Within the programmable logic hierarchy, the SX-A belongs to the antifuse FPGA subcategory: one-time programmable devices whose interconnect is permanently set at programming time, as opposed to SRAM-based FPGAs that are reconfigurable and require an external configuration memory. Antifuse FPGAs are favored where nonvolatility, security against bitstream extraction, instant-on behavior, and low static power are more important than in-field reprogrammability.
Key features of the A54SX72A-1CQ256 include 72,000 gates (equivalent to 4,024 logic cells) and up to 108,000 usable system gates, a maximum toggle frequency of 250 MHz, and 203 user I/Os in the ceramic CQFP package. The ceramic package with tie bar provides superior moisture immunity and thermal performance compared to plastic packages, supporting demanding environments and simplified rework. Speed grade 1 denotes the standard speed bin of the SX-A family, and the device operates over a commercial 0 C to +70 C temperature range.
Architecturally, the SX-A family uses a sea-of-modules structure with dedicated FIFO-like logic modules and dedicated high-speed carry logic, supported by three types of clock resources: two hard-wired global clocks (CLKA, CLKB) and quadrant clocks (QCLK) for localized, low-skew clocking, as described in Microchip's SX-A family datasheet. The 0.25 um antifuse interconnect delivers deterministic, low-jitter routing well suited to high-performance state machines, bus interfaces, and glueless integration of multiple logic functions into a single low-cost chip.
Typical applications include industrial control and automation logic consolidation, military and aerospace subsystems that leverage ceramic packaging and antifuse security, telecommunications line-card control, and legacy system life-extension where a pin-identical ceramic-package FPGA is already qualified on the board.
When designing with this device, note the single 2.5 V core supply requirement and verify power sequencing against the SX-A datasheet; also plan programming logistics, since antifuse devices are one-time programmable and require a programmer-compatible design flow (Libero SoC) before board assembly.
This page synthesizes verified distributor data, drop-in same-package alternatives, and practical design guidance not found in the manufacturer datasheet, giving engineers a single citation-ready reference. Pricing as of 2026-09-03.
直接替換替代品，適用於 A54SX72A-1CQ256 — 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： A54SX72A-1CQ256 （相同外形與佔位） — 差異在於 Process Technology, System Gates, Maximum Toggle Frequency, Package, Family.
A54SX72A-CQ256B
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-CQ256M
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-CQ256
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-CQ256
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX32A-CQ256B
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX32A-CQ256M
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX72A-1CQ256 最大額定值與電氣特性
| Manufacturer Series | SX-A |
| System Gates | 108,000 |
| Logic Gates | 72,000 |
| Logic Cells (Modules) | 4,024 |
| Number of I/O | 203 |
| Maximum Toggle Frequency | 250 MHz |
| Process Technology | 0.25 um |
| Programming Technology | Antifuse (one-time programmable) |
| 工作電源電壓 | 2.5 V |
| Speed Grade | -1 |
| 封裝 / 外殼 | CQFP-256 (256-BFCQFP with tie bar) |
| 安裝方式 | SMD/SMT |
| Minimum Operating Temperature | 0 C |
| Maximum Operating Temperature | +70 C |
| Clock Resources | CLKA, CLKB global clocks plus quadrant clocks (QCLK) |
| Product Type | FPGA - Field Programmable Gate Array |
A54SX72A-1CQ256 cqfp-256 (256-bfcqfp with tie bar) 腳位配置指南
A54SX72A-1CQ256（cqfp-256 (256-bfcqfp with tie bar) 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： A54SX72A-1CQ256.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX72A-1CQ256 適用於 6 應用s: Industrial Control and Automation, Military and Aerospace Subsystems, Telecommunications Line-Card Logic, Legacy System Life Extension, Secure Logic and Anti-Cloning Designs, Test and Measurement Instrumentation.
Industrial Control and Automation
The A54SX72A-1CQ256 fits industrial control by consolidating address decoding, bus bridging, and sequencing state machines that would otherwise consume multiple TTL/ASIC devices; Microchip positions SX-A parts explicitly as single-chip system-savings solutions. Its 108K system gates and 4,024 logic cells absorb mid-size control logic, while 203 user I/Os drive backplane signals, sensors, and actuators from a single 2.5 V rail at up to 250 MHz toggle rates. The instant-on antifuse configuration means the controller is active within nanoseconds of power application - no configuration-load delay - which simplifies safety interlock and watchdog design. The ceramic CQFP package also tolerates harsher cabinet environments than plastic housings.
推薦
Military and Aerospace Subsystems
Defense and aerospace boards choose the A54SX72A-1CQ256 for its ceramic CQFP (BFCQFP with tie bar) package, antifuse configuration security, and proven mature silicon. Antifuse interconnect cannot be read back or reprogrammed, eliminating bitstream-extraction attacks relevant to SRAM FPGAs, and the hermetic ceramic package resists moisture, outgassing, and rework stress in high-reliability builds. The military-variant A54SX72A-1CQ256M with the same footprint supports temperature-screened programs, enabling a common PCB across commercial prototypes and qualified production. With 108K system gates and deterministic low-skew CLKA/CLKB/QCLK clock networks, it handles telemetry formatting, interface adaptation, and redundancy-management logic in flight hardware.
推薦
Telecommunications Line-Card Logic
Telecom line cards historically used SX-A FPGAs to glue SONET/SDH framers, T1/E1 fricers, and backplane interfaces together; the A54SX72A-1CQ256 continues that role in legacy and extended-life networks. Its 250 MHz toggle capability covers 155 Mbps-class processing, while 203 I/Os handle H.110/H.100 CT-bus, JTAG, and maintenance channels. The quadrant clock (QCLK) resources allow per-card-region clock domains with low skew, and the 2.5 V core keeps dynamic power manageable in high-density shelves. Antifuse one-time programming suits carrier equipment where configurations are fixed at manufacturing and configuration-bit flip immunity from atmospheric radiation is operationally valuable over 20-year service lives.
推薦
Legacy System Life Extension
Many fielded avionics, test, and industrial platforms were designed around SX-A CQ256 devices; the A54SX72A-1CQ256 enables direct board-level repair and last-time-buy bridging without PCB respin. Because all CQ256 SX-A variants share the 256-pin ceramic footprint, maintenance depots can substitute speed-grade or screening variants (CQ256, CQ256B, CQ256M) to keep fleets running when exact date-code-matched stock disappears. Design teams should hold the Libero SoC source project and a programmer flow ready, since antifuse devices cannot be reflashed in service - each replacement part is programmed fresh with the verified design bitstream before installation, restoring identical form, fit, and function.
推薦
Secure Logic and Anti-Cloning Designs
Product-security engineers deploy the A54SX72A-1CQ256 to protect proprietary logic because antifuse configuration physically becomes part of the silicon: there is no configuration bitstream in external memory to intercept and no readback path to exploit, unlike SRAM FPGAs that load plaintext bitstreams at every power-up. Combined with the ceramic CQFP package that complicates casual decapping compared to small plastic packages, the device raises reverse-engineering costs substantially. With 108K gates available, designers can embed authentication state machines, custom cipher blocks, and board-identity logic alongside the functional design, so cloned boards without a legitimately programmed device simply never become operational.
推薦
Test and Measurement Instrumentation
Bench and automated test equipment uses the A54SX72A-1CQ256 as timing-generator, trigger-logic, and bus-interface fabric where deterministic behavior matters more than density. Antifuse routing gives fixed, repeatable propagation paths, so instrument timing calibrations remain valid across the production life of a unit - a subtle but real advantage over SRAM FPGAs whose routing can change between bitstream builds. The 250 MHz toggle ceiling and low-skew global/quadrant clocking support sub-10 ns event resolution, while 203 I/O pins connect to relay matrices, digitizer front ends, and GPIB/LAN companion chips. Instant-on start also shortens instrument boot time relative to configuration-loading alternatives.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX72A-1CQ256 — 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 | A54SX72A-CQ256B | A54SX72A-CQ256M | A54SX32A-CQ256 |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | CQFP-256 (BFCQFP with tie bar) | CQFP-256 - same | CQFP-256 - same | CQFP-256 - same |
| System Gates | 108,000 | 108,000 | 108,000 | 36,000 |
| Logic Cells | 4,024 | 4,024 | 4,024 | 1,344 |
| Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
| Max Toggle Frequency | 250 MHz | 250 MHz | 250 MHz | 250 MHz |
| Programming Technology | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) |
主要差異化特點
- Full 72K-gate die in ceramic CQFP package (對比A54SX32A-CQ256)
- Commercial temperature rating at lower cost (對比A54SX72A-1CQ256M)
- Antifuse configuration security and instant-on (對比SRAM-based FPGAs (functional alternative only))
設計說明
The A54SX72A-1CQ256 operates from a single 2.5 V supply. Provide local decoupling of at least 0.1 uF ceramic per power pin pair plus bulk capacitance near the CQFP-256 package; because the ceramic package exposes many power/ground pins around all four sides, distribute decoupling capacitors around the perimeter rather than clustering on one side. Verify core current against your design's utilization in Libero SoC power analysis before fixing the regulator, since dynamic current scales with toggle activity up to the 250 MHz ceiling.
Antifuse devices are one-time programmable: never send an unverified or timing-unclosed design to the programmer. Complete static timing analysis in Libero SoC, lock the revision, and program only released bitstreams. Because a programming failure scraps the device, budget attrition (industry practice is 5-10%) into purchase quantities. Also match speed grade (-1) and screening level when substituting same-package variants so existing timing sign-off remains valid.
The 256-BFCQFP with tie bar requires a footprint that accommodates the tie bar feature on one package edge - do not copy a generic CQFP-256 land pattern without checking the mechanical drawing in the SX-A datasheet. The tie bar must not short to signal land patterns; follow the package's recommended courtyard. Ceramic CQFP leads are mechanically stiffer than plastic PQFP leads, so avoid board-warp stress by using symmetric copper balance on outer layers.
Use the dedicated CLKA and CLKB global clocks for system-wide timing and reserve quadrant clocks (QCLK) for localized low-skew domains, per Microchip's application notes on A54SX72A quadrant clock usage. Avoid deriving high-fanout clocks from general-purpose routing. With 0.25 um antifuse interconnect, keep edge rates managed on 203 I/O lines driving backplane or cable loads; series termination near the package is typically sufficient for moderate-speed buses.
合規資訊
Ceramic hermetic CQFP package. RoHS/REACH status not stated in verified web data; many mature ceramic-package parts are exempt categories - verify on the Microchip product page before export or EU-market claims.
