A54SX72A-FGG256I - 108K-Gate Antifuse FPGA, 203 I/O | Microchip
MPN： A54SX72A-FGG256I ✓ 啟用中A54SX72A-FGG256I 概覽
An antifuse FPGA is a one-time-programmable field-programmable gate array in which programmable interconnect elements are permanently formed during a one-time programming step. Unlike SRAM FPGAs, antifuse devices retain their configuration with no external boot flash, exhibit very low static power, and are inherently resistant to configuration readback attacks, making them a mature choice within the broader hierarchy of programmable logic devices (PLD > FPGA > antifuse FPGA).
Key features include the 0.25 um CMOS process technology, system clock rates reported up to 217 MHz depending on speed grade and design, single-chip integration that eliminates configuration memory, and industrial temperature operation indicated by the -I suffix. The fine-pitch 1.0 mm ball-pitch FBGA conserves board area while providing generous 203-user-I/O routing flexibility for wide data buses.
Architecturally, the SX-A family uses Actel-derived programmable logic modules organized into clusters, with multiple global and quadrant clock networks (CLKA, CLKB, and QCLK) that support high-speed synchronous designs; Microchip application notes describe quadrant clock usage specific to the A54SX72A.
Typical applications include industrial control and automation, communications and networking line cards, military and aerospace logic replacement, ASIC prototyping glue logic, and obsolescence-driven redesigns where one-time programmability, security, and low power are priorities.
Design consideration: because the device is one-time-programmable, complete functional simulation and pin assignment review in the Microchip (Actel) design flow must be completed before programming; budget for programming service or in-house programming equipment.
This page adds value beyond the manufacturer datasheet by consolidating distributor pricing context, same-footprint drop-in speed-grade and temperature-grade alternatives, comparison tables, and practical design notes in one reference.
直接替換替代品，適用於 A54SX72A-FGG256I — 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-FGG256I （相同外形與佔位） — 差異在於 Package, Process Technology, Operating Temperature, System Gates, Speed Grade.
A54SX72A-1FGG256I
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-1FGG256
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-2FGG256
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-FGG256M
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-FG256
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-1FGG256M
✅ 直接替換聯絡詢價
查看資料表 →A54SX72A-FGG256I 最大額定值與電氣特性
| Family | SX-A (antifuse FPGA) |
| System Gates | 108000 gates |
| Logic Cells (CLBs) | 6036 |
| User I/O | 203 |
| Supply Voltage (Core) | 2.5 V |
| Programming Type | Antifuse (one-time programmable) |
| Process Technology | 0.25 um CMOS |
| Maximum Toggle/System Frequency | up to 217 MHz (speed-grade dependent) |
| 封裝 | 256-ball FBGA (FGG256), 1.0 mm pitch |
| 安裝類型 | Surface Mount |
| Temperature Grade | Industrial (-I suffix) |
| 工作溫度 | -40C to +85C |
| Configuration Storage | Nonvolatile (no external boot device required) |
| Clock Networks | CLKA, CLKB, and quadrant clocks (QCLK) |
| RoHS 狀態 | Compliant |
| Ball Pitch | 1 mm |
A54SX72A-FGG256I 256-ball fbga (fgg256), 1.0 mm pitch 腳位配置指南
A54SX72A-FGG256I（256-ball fbga (fgg256), 1.0 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： A54SX72A-FGG256I.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX72A-FGG256I 適用於 6 應用s: Industrial Control and Automation, Communications and Networking Equipment, Military and Aerospace Logic Replacement, ASIC Prototyping and Bridge Logic, Obsolescence-Driven Redesign, Secure Embedded Systems.
Industrial Control and Automation
The A54SX72A-FGG256I fits industrial controllers that need deterministic, instant-on logic without configuration boot time. Its nonvolatile antifuse fabric powers up with logic active immediately, an advantage over SRAM FPGAs that must reload bitstreams from external flash on every power cycle - critical for machine safety interlocks and factory automation sequences. With 108K system gates and 203 user I/O, it integrates bus interfaces, sequencers, and I/O expansion glue logic that previously required multiple CPLDs or ASICs, cutting BOM cost. The industrial -40C to +85C grade of the -I suffix matches plant-floor temperature envelopes, and the 256-ball 1.0 mm-pitch FBGA suits compact PLC and motor-control boards where a 2.5V core rail is readily derived from standard 3.3V/5V system supplies.
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Communications and Networking Equipment
Line cards, backplane interfaces, and telecom control planes benefit from the A54SX72A-FGG256I's combination of 108K gates, 203 user I/O, and quadrant clock resources (CLKA, CLKB, QCLK) that support multiple synchronous domains typical of networking hardware. Family data reports system performance up to 217 MHz depending on speed grade, sufficient for bus bridging, framing, and packet-routing glue logic. The antifuse fabric's low static power from the 2.5V 0.25 um process reduces card-level thermal load in high-density chassis. Configuration immutability also protects firmware IP in deployed telecom equipment, since the programmed netlist cannot be read back. Designers should confirm timing closure at standard grade and select the -1 speed grade variant, which is pin-compatible on the same PCB, if critical paths exceed budget.
推薦
Military and Aerospace Logic Replacement
The SX-A family has a long heritage in defense electronics, and the A54SX72A-FGG256I serves programs needing secure, radiation-tolerant-behavior-prone antifuse logic at 108K-gate density. Antifuse interconnect is inherently more robust against configuration upsets than SRAM cells and cannot be cloned by bitstream readback, addressing two recurring concerns in military platforms. The military-grade sibling A54SX72A-FGG256M shares the same die and footprint for extended-temperature builds, while the industrial -I version suits less severe environments. With 203 user I/O and nonvolatile configuration, it consolidates legacy MCM, PAL, and ASIC functions into a single verified device. Note the RT54SX72S radiation-tolerant variant exists separately for space programs and must be selected through formal program qualification.
推薦
ASIC Prototyping and Bridge Logic
Before committing to an ASIC tape-out, the A54SX72A-FGG256I provides a 108K-gate fabric for prototyping control-plane logic, verifying RTL behavior in-system at moderate speeds. Its one-time programmability mirrors ASIC immutability, encouraging the same rigorous simulation sign-off discipline required for hard IP. As bridge and glue logic on mixed-vendor boards, the 203 user I/O accommodates wide parallel buses between processors, memories, and peripherals, while quadrant clocks isolate timing domains. Because the configuration is nonvolatile, prototype boards power up functional without programming cables or boot devices, simplifying demonstration hardware. When prototyping reveals a need for reconfiguration iterations, designers typically program multiple devices rather than reusing one, so unit cost should be budgeted accordingly in prototype planning.
推薦
Obsolescence-Driven Redesign
Many designs adopt the A54SX72A-FGG256I when older Actel SX/SX-L or discontinued ASIC/CPLD logic must be replaced. The SX-A family remains an active Microchip product line, making it a forward-compatible consolidation target: legacy netlists port into the same Actel-derived architecture and design flow, and Microchip application notes (including those on A54SX72A quadrant clocks) support migration. With 108K gates and 203 user I/O, one device frequently replaces several obsolete PLDs, shrinking board area and inventory complexity. Because the antifuse fabric is one-time-programmable, replacement stock can be programmed and banked as trusted spares without worrying about configuration-storage aging. Pin-compatible speed-grade variants (standard, -1, -2) let one PCB footprint absorb future timing upgrades without respin.
推薦
Secure Embedded Systems
Applications handling sensitive algorithms - encryption key management, authentication logic, proprietary protocol engines - use the A54SX72A-FGG256I because antifuse configuration cannot be read back after programming, unlike SRAM FPGA bitstreams. The nonvolatile fabric also starts instantly with logic active, eliminating the window during which an SRAM device waits for configuration. At 108K gates and 203 user I/O, entire security pipelines fit alongside host interface logic in one 2.5V device, reducing the physical attack surface relative to multi-chip solutions. The industrial -I temperature grade suits outdoor and uncontrolled-environment installations. Designers should combine the device's inherent immutability with board-level measures such as power-rail monitoring and I/O filtering, since security depends on the complete system, not the FPGA alone.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX72A-FGG256I — 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-1FGG256I | A54SX72A-FGG256M | A54SX72A-2FGG256 |
|---|---|---|---|---|
| Package | 256-ball FBGA (FGG256) | 256-ball FBGA (FGG256) - same | 256-ball FBGA (FGG256) - same | 256-ball FBGA (FGG256) - same |
| Brand | Microchip Technology (Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 108000 | 108000 | 108000 | 108000 |
| User I/O | 203 | 203 | 203 | 203 |
| Speed Grade | Standard | -1 (faster) | Standard | -2 (fastest) |
| Temperature Grade | Industrial (-I) | Industrial (-I) | Military (-M) | Commercial |
| Core Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
| Programming Technology | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) |
主要差異化特點
- Industrial temperature grade for plant-floor environments (對比A54SX72A-FGG256)
- Standard speed grade minimizes cost with full timing margin headroom (對比A54SX72A-1FGG256I)
- Commercial-grade availability for benign lab and office deployments (對比A54SX72A-FGG256M)
設計說明
The A54SX72A-FGG256I operates from a 2.5V core supply on a 0.25 um antifuse process; I/O bank supply requirements are given in the SX-A family datasheet. Because antifuse fabric is nonvolatile and static power is low, the dominant design task is ensuring a clean, well-decoupled 2.5V rail: place bulk and 0.1 uF ceramic decoupling capacitors at the package power/ground ball pairs per the datasheet FGG256 ball map. Estimate rail current from post-place-and-route power analysis in the Microchip toolchain rather than from generic figures, since utilization strongly affects consumption.
This is a one-time-programmable device - a programming error consumes the part. Complete functional simulation, static timing analysis, and pin-assignment review before programming, and reserve engineering spare units. Also verify speed-grade ordering when substituting: the -1 and -2 grades are faster than standard, so a design closed at standard grade runs on any higher grade, but never substitute a slower or commercial-temperature part into an industrial application. Confirm the exact suffix (FGG256I vs FGG256 vs FGG256M) on purchase orders.
The FGG256 package uses a 1.0 mm ball pitch requiring fine-pitch BGA assembly: specify solder paste printing inspection and X-ray post-reflow inspection in the assembly process. Follow the recommended FGG256 land pattern from the SX-A family datasheet, and route the dedicated clock balls (CLKA, CLKB, QCLK per Microchip quadrant clock application notes) with controlled-length, low-crosstalk traces. Avoid routing high-speed signals under the package center where possible to simplify rework and improve signal integrity.
合規資訊
FindIC and distributor listings describe A54SX72A-FGG256I as ROHS COMPLIANT (PBGA256 package). REACH, lead-free, and halogen-free declarations should be confirmed from the official Microchip product page material declarations.
