A54SX32A-FGG256I - 32K Gate FPGA, 238MHz, 256-FBGA | Microchip
MPN： A54SX32A-FGG256I ✓ 啟用中A54SX32A-FGG256I 概覽
A field-programmable gate array (FPGA) is a type of programmable logic device that lets designers implement custom digital circuits in hardware. Within the semiconductor hierarchy, the FPGA sits under programmable logic, alongside CPLDs and ASICs. Unlike SRAM-based FPGAs from Xilinx or Intel (Altera), the SX-A family uses antifuse programmability: connections are permanently set at programming time, giving the device non-volatile configuration, high security against bitstream extraction, and very low static power.
Key features include the sea-of-modules architecture, in which the entire die floor is covered by a grid of logic modules with virtually no area lost to interconnect. The family provides two module types: the combinatorial C-cell and the register R-cell, enabling fast, predictable routing. Antifuse technology also yields radiation-tolerant behavior and instant-on power-up with no external configuration device required.
Technical depth comes from the 0.25um/0.22um CMOS process, which supports the 238 MHz system toggle rate - performance levels that made SX-A devices popular where SRAM FPGAs were too costly or power hungry. The 2.5V core supply keeps static current low, while the permanently programmed fabric eliminates configuration-readout attacks common to SRAM FPGAs.
Typical applications include aerospace and industrial glue logic integration, bus bridging, state-machine implementations, communications interfacing, and single-chip consolidation of multiple ASSP/PLD functions to reduce board count and system cost.
Design consideration: antifuse devices are one-time programmable; final verification must be completed in simulation before programming, and a spare programmed device should be held for production.
This page synthesizes verified distributor data, drop-in same-package alternatives, pricing guidance, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 A54SX32A-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： A54SX32A-FGG256I （相同外形與佔位） — 差異在於 Operating Temperature, Package, System Gates, Family, RoHS Status.
A54SX32A-1FGG256I
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-2FGG256I
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查看資料表 →A54SX32A-FGG256A
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-FGG256M
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-1FGG256M
✅ 直接替換聯絡詢價
查看資料表 →A54SX32A-FG256I
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX32A-FGG256I 最大額定值與電氣特性
| Family | SX-A |
| System Gates | 32000 |
| Logic Cells | 1800 |
| Number of I/O | 203 |
| Toggle Frequency | 238 MHz |
| 供應電壓 | 2.5 V |
| Process Technology | 0.25um / 0.22um CMOS |
| Programmability Type | Antifuse (one-time programmable, non-volatile) |
| Architecture | Sea-of-modules (C-cell and R-cell) |
| 工作溫度 | -40C to +85C (TA) |
| 封裝 / 外殼 | 256-BGA (FBGA) |
| 安裝類型 | Surface Mount |
| Lead Free | Yes (lead free per Mouser) |
| RoHS 狀態 | Compliant |
| Configuration Memory | Non-volatile (antifuse), no external configuration device |
A54SX32A-FGG256I 256-bga (fbga) 腳位配置指南
A54SX32A-FGG256I（256-bga (fbga) 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-FGG256I.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX32A-FGG256I 適用於 6 應用s: Aerospace Glue Logic Integration, Industrial Control and Automation, Communications Bus Bridging, High-Reliability State Machine Implementation, Test and Measurement Instrumentation, Legacy Design Sustainment and BOM Continuity.
Aerospace Glue Logic Integration
The A54SX32A-FGG256I fits aerospace and defense board-level integration because its antifuse configuration is non-volatile, instant-on, and immune to bitstream readback, while the 238 MHz toggle rate handles wide address decoders, bus arbitration, and custom interfaces without external configuration memory. Designers consolidate multiple PAL/GAL/ASSP devices into this single 32K-gate device, cutting BOM count and board area in the 256-FBGA footprint. Typical use places the device between a backplane bus and processor local bus, with the 203 user I/O covering 32/64-bit data paths plus control. The trade-off versus SRAM FPGAs is one-time programming, so designs must be fully verified before burn - acceptable in high-reliability programs where configuration change control is mandatory anyway.
推薦
Industrial Control and Automation
In industrial controllers, motor-drive interface cards, and PLC I/O modules, the A54SX32A-FGG256I provides deterministic, configuration-free logic that powers up the instant 2.5V is applied - critical for safety interlocks that must be active at power-on. The industrial -40C to +85C rating covers unconditioned factory-floor cabinets, and the antifuse fabric draws minimal static current, easing passive backplane thermal budgets. The 203 I/O directly interface encoders, limit switches, and fieldbus transceivers through appropriate level translation. Engineers typically implement state machines, PWM edge logic, and parallel-to-serial bridging in the C-cell/R-cell fabric at fractions of the power of equivalent SRAM devices, while the permanent programming prevents field tampering of control logic.
推薦
Communications Bus Bridging
The A54SX32A-FGG256I suits protocol bridging and bus conversion in telecommunications line cards and embedded networking hardware, where the 238 MHz toggle rate comfortably covers PCI-era, VME, and proprietary parallel bus timing at 2.5V signaling. The sea-of-modules routing structure gives predictable propagation delays, simplifying timing closure for fixed-latency bridges between a system backplane and local memory or MAC devices. Its 1800 logic cells provide enough capacity for FIFO control, arbitration, error checking, and register-file functions, while antifuse security protects proprietary protocol implementations from cloning. Because no configuration device is needed, the bridge is functional during system boot sequences when a host FPGA would still be loading its bitstream.
推薦
High-Reliability State Machine Implementation
Safety-relevant sequencing logic - power-supply sequencing controllers, watchdog and reset supervision trees, interlock chains - benefits from the A54SX32A-FGG256I because the antifuse configuration cannot be corrupted by single-event configuration upsets the way SRAM cells can, and there is no configuration file to lose. The R-cell registers implement Moore/Mealy state machines with datasheet-documented timing, and the permanent programming enforces change control required by certification audits. With 32K gates, engineers can integrate redundant, comparator-voted state machines within one device. The -40C to +85C industrial rating and low static power allow deployment in sealed enclosures without active cooling, and instant-on behavior guarantees interlocks are asserted the moment power arrives.
推薦
Test and Measurement Instrumentation
Bench and rack instruments use the A54SX32A-FGG256I for trigger logic, counter/timer front ends, and measurement sequencing where deterministic timing matters more than reconfigurability. The 238 MHz toggle rate supports 100 MHz-class counting and time-stamping paths, and the 2.5V fabric keeps switching noise low near sensitive analog front ends on shared boards. The 203 user I/O handle parallel test buses, relay matrix control, and instrumentation interconnects. Antifuse programming is an asset in calibration-sensitive equipment: the shipped logic image is physically permanent, guaranteeing that units in the field run exactly the validated firmware revision, with no risk of accidental or malicious reconfiguration - an audit-friendly property for metrology-grade hardware.
推薦
Legacy Design Sustainment and BOM Continuity
Many fielded avionics, medical, and industrial products were designed around the SX32A die, and the A54SX32A-FGG256I remains the continuity anchor for those BOMs. Because every A54SX32A package variant - FGG256, FG256, BGG329, TQG144, PQG208 - shares the same die and Libero design database, engineers can qualify alternate packages or speed grades from one verified code base, dramatically reducing requalification effort when the exact ordering code becomes allocation-constrained. This page's cross-reference confirms FFF alternates such as A54SX32A-FG256I for RoHS-flexible builds. Antifuse parts also eliminate obsolescence risk tied to companion configuration flash, since nothing external is required to boot the device in the field.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX32A-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 | A54SX32A-1FGG256I | A54SX32A-2FGG256I | A54SX32A-FGG256A | A54SX32A-FGG256M |
|---|---|---|---|---|---|
| Package | 256-FBGA | 256-FBGA - same | 256-FBGA - same | 256-FBGA - same | 256-FBGA - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 32000 | 32000 | 32000 | 32000 | 32000 |
| Number of I/O | 203 | 203 | 203 | 203 | 203 |
| Speed Grade | Standard | -1 (faster) | -2 (fastest) | Standard | Standard |
| Temperature Grade | Industrial (-40C to +85C) | Industrial | Industrial | Extended (A) | Military (M) |
| Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
| Typical Relative Cost | Baseline | Higher | Highest | Higher | Highest (mil-grade screening) |
主要差異化特點
- Non-volatile antifuse fabric with zero configuration hardware (對比SRAM-based FPGAs (e.g., Xilinx/Intel equivalents))
- 238 MHz toggle rate on a simple 2.5V supply (對比A54SX32A-2FGG256I (fastest grade) vs slower family members)
- Full same-die package ecosystem for BOM flexibility (對比A54SX32A-FGG256M / A54SX32A-FGG256A)
- Trade-off: one-time programmability (對比Flash-based Microchip IGLOO (AGL600V5-FGG256I))
設計說明
Supply the A54SX32A-FGG256I from a clean 2.5V rail with local 0.1uF ceramic decoupling at each VCC ball group plus 10uF bulk per bank. Estimated: dynamic power scales linearly with toggle rate, so at the 238 MHz maximum the internal power will be several times higher than a typical 20-50 MHz industrial design - run the Libero power calculator with realistic activity factors before sizing the regulator. Because antifuse parts have negligible static current and no configuration surge, inrush is dominated by ceramic capacitor charging only.
Follow the 256-FBGA footprint in the SX-A family datasheet mechanical drawing exactly; the land pattern uses standard 0.5 mm-pitch BGA rules with non-solder-mask-defined pads. Route the 203 I/O with controlled impedance where buses exceed 50 MHz, and reference all high-speed signals to an unbroken ground plane. Programming balls must remain accessible to the Silicon Sculptor fixture or a bed-of-nails - do not bury them under a connector or heatsink, or field programming becomes impossible.
Antifuse means one-time programmable: there is no rework path after programming. Always complete post-layout timing simulation in Libero at the correct speed grade before burning a device, and keep at least one spare programmed unit per assembly station. Do not substitute a slower speed grade into a timing-critical netlist, and confirm the temperature suffix (I/A/M) matches the qualification requirement - an FGG256A cannot be freely swapped into an I-suffix build without document control approval.
Estimated: the 256-FBGA package on a typical 4-layer board with solid ground plane achieves effective thermal resistance in the tens of C/W range; at the low static power of antifuse fabric, most industrial designs need no heatsink. Verify junction temperature with the Microchip thermal application note values for your exact stack-up when the device is clocked near 238 MHz continuously, since dynamic power - not static leakage - dominates heat generation in SX-A devices.
合規資訊
Mouser lists A54SX32A-FGG256I as lead free. The FGG double-G suffix denotes RoHS lead-free ball metallurgy per Microchip convention; the single-G FG256I variant is the non-RoHS alternate.
