A3P400-FG484 - 55,296-Gate ProASIC3 FPGA | Microchip
料号： A3P400-FG484 ✓ 量产中A3P400-FG484 概述
A field-programmable gate array is a digital semiconductor whose logic and interconnect configuration can be programmed after fabrication. An FPGA belongs to the programmable-logic hierarchy, alongside CPLDs, and provides substantially higher logic capacity than conventional mask-programmed devices. The ProASIC3 family combines this post-fabrication flexibility with flash-based configuration, allowing the A3P400 to support product revisions, security updates, and design reuse without external configuration memory.
The A3P400-FG484 provides 55,296 system gates and 194 user I/Os in a 484-BGA package. Its nonvolatile flash configuration eliminates the need for a separate configuration PROM in designs that use supported programming methods. The ProASIC3 family also provides programmable I/O resources and supports multiple voltage standards, while its single-chip architecture consolidates logic, configuration storage, and interface functions within one package.
Within the ProASIC3 portfolio, available density options extend from low-capacity devices to 1 million system gates, and family configurations provide up to 144 kbits of true dual-port SRAM and up to 300 user I/Os. The A3P400 occupies the middle of this range: its 55,296-gate implementation is appropriate for medium-complexity control logic, bus bridging, protocol conversion, embedded monitoring, and general-purpose programmable I/O aggregation.
Typical uses include industrial automation controllers, communication interface modules, test and measurement equipment, embedded instrumentation, and compact control systems. Its relatively high pin count provides substantial parallel I/O capacity, making it useful when a design requires numerous digital connections, multiple interface voltages, or dedicated configuration and control signals within a single programmable device.
Design planning should include careful BGA fanout and via-in-pad or via-under-pad construction, multiple supply decoupling, and programming-in-circuit or manufacturing-programming provisions. Because the package exposes many I/O and power connections, signal-integrity and power-distribution planning should be completed before the layout is frozen. The manufacturer product page and A3P400 datasheet should be used to confirm the exact pin assignments, supported I/O standards, operating voltages, and programming configuration for the production design.
This product page consolidates the verified device identity, package information, application guidance, technical constraints, and available same-family migration paths. It is intended to help engineers distinguish the A3P400-FG484 from speed- and temperature-grade variants, plan a robust 484-BGA implementation, and identify which functional changes require hardware redesign rather than simple configuration changes.
直接替换替代料： A3P400-FG484 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
A3P400-FG484I
✅ 直接替换📋 参考替代料（不在目录中）
A3P400-1FG484
✅ 直接替换📋 参考替代料（不在目录中）
A3P400-FG484 最大额定值与电气特性
| Device Type | ProASIC3 flash-based FPGA |
| System Gates | 55,296 gates |
| User I/O Count | 194 I/Os |
| 封装 | 484-BGA |
| 安装类型 | Surface mount |
| Configuration Memory | Flash-based, nonvolatile |
| Process Technology | 130 nm CMOS |
| Metal Layers | 7 layers, 6 copper layers |
| Device Architecture | Single-chip FPGA |
| Programmability | User-programmable logic and interconnect |
| I/O Banks | 4 I/O banks |
A3P400-FG484 484-bga 引脚配置指南
A3P400-FG484（484-bga 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： A3P400-FG484.
请参阅 数据手册 以查看完整引脚配置。
典型应用
A3P400-FG484 适用于 6 应用s: Industrial Automation Control, Communication Interface Conversion, Test and Measurement Instrumentation, Embedded Monitoring and Diagnostics, Programmable I/O Aggregation, Compact Control Systems.
Industrial Automation Control
The A3P400-FG484 fits medium-complexity industrial controllers that must coordinate sensors, actuators, interlocks, and operator interfaces in one programmable device. Its 55,296 system gates provide substantial logic capacity, while 194 user I/Os support parallel digital connectivity and multiple external interface groups. The flash-based configuration permits controlled firmware and logic revisions without an external configuration PROM. Before layout release, verify the exact supported I/O standards, supply rails, timing limits, and operating-temperature grade for the controller environment.
推荐
Communication Interface Conversion
The A3P400-FG484 can bridge parallel and serial interfaces by implementing protocol state machines, buffering, timing control, and data-routing logic in flash-programmable fabric. Its 194 user I/Os are useful when the module must terminate multiple parallel buses while supporting discrete control signals and status indicators. The 55,296-gate capacity allows several protocol bridges to coexist, subject to the selected I/O standards and timing. Validate baud-rate, skew, and I/O drive requirements against the manufacturer datasheet before schematic signoff.
推荐
Test and Measurement Instrumentation
For test and measurement equipment, the A3P400-FG484 can combine sequencing, acquisition control, pattern generation, and front-panel logic in a single programmable device. Its 55,296 system gates are appropriate for medium-density instrument control, while 194 user I/Os provide connectivity for measurement triggers, relay control, status buses, and displays. Nonvolatile flash configuration supports repeatable production programming and controlled upgrades. Engineers should confirm timing margins, supported I/O voltage standards, and the required operating-temperature grade for bench or factory equipment.
推荐
Embedded Monitoring and Diagnostics
The A3P400-FG484 is suitable for embedded monitoring systems that collect operating states, compare thresholds, manage alarms, and record diagnostic events. Its 194 user I/Os can accommodate discrete sensor inputs, remote indicators, communication links, and fault signals, while the 55,296-gate capacity supports multiple monitoring channels and control paths. Flash-based configuration preserves the implemented logic during power loss and supports controlled field updates. Confirm that each connected interface uses a voltage standard supported by the assigned I/O bank.
推荐
Programmable I/O Aggregation
The A3P400-FG484 can replace a collection of fixed logic devices by centralizing I/O decoding, timing, interlocks, and data capture in one FPGA. With 194 user I/Os and four I/O banks, it supports systems that need substantial parallel connectivity and voltage-organized external interfaces. The flash-based architecture simplifies in-circuit updates after functional changes, provided the programming procedure and safety strategy are included in the production process. Assign signals to banks only after checking voltage compatibility, drive strength, and timing constraints.
推荐
Compact Control Systems
The A3P400-FG484 suits compact control systems that combine sequencing, machine-state control, operator signaling, and communication functions on a single board. Its 484-BGA package provides many connections for power, configuration, clocks, and user I/O, while 55,296 system gates support moderate control complexity. Because the package is fine-pitch and high pin count, the design needs careful escape routing, uninterrupted supply distribution, and controlled assembly yield. Use the manufacturer package data and pin assignment to establish fanout, stack-up, and solder-mask rules.
推荐
推荐产品汇总
工程参考数据： A3P400-FG484 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | A3P400-FG484I | A3P400-1FG484 |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 484-BGA | 484-BGA - same package | 484-BGA - same package |
| Product Family | ProASIC3 | ProASIC3 | ProASIC3 A3P400 |
| System Gates | 55,296 gates | 55,296 gates | 55,296 gates |
| User I/O Count | 194 I/Os | 194 I/Os | 194 I/Os |
| Configuration Memory | Flash-based, nonvolatile | Flash-based, nonvolatile | Flash-based, nonvolatile |
| Process Technology | 130 nm CMOS | 130 nm CMOS | 130 nm CMOS |
| Metal Layer Structure | 7 layers, 6 copper layers | 7 layers, 6 copper layers | 7 layers, 6 copper layers |
关键差异点
- Identified standard-grade configuration with a documented 484-BGA footprint （对比 A3P400-1FG484)
- Direct industrial-grade family alternative （对比 A3P400-FG484I)
- Nonvolatile single-chip configuration architecture （对比 A3P400-FG484I)
设计说明
The 484-BGA footprint requires a deliberate escape-routing strategy. Assign the shortest routing priority to clocks, configuration signals, and power-distribution networks, then route slower user I/O through the available escape channels. Use the manufacturer package drawing to define pad, mask, and paste-land geometry rather than deriving dimensions from a catalog photograph. A multilayer stack-up should provide adjacent ground and power planes, with via-in-pad or via-under-pad construction evaluated against assembly capability and inspection requirements.
Decouple each applicable supply rail directly at the device power balls with the capacitance and placement prescribed by the A3P400 documentation. The 484-BGA arrangement distributes many power and ground connections across the package, so an uninterrupted plane is generally preferable to long point-to-point supply traces. Keep high-current paths and switching-node copper away from the ball field where practical. Before schematic release, populate the missing core-voltage, I/O-voltage, and sequencing requirements from the manufacturer datasheet rather than assigning rail values by analogy.
Plan programming and configuration access as a permanent part of the board rather than an assembly-time afterthought. Confirm whether production programming is performed on a dedicated fixture or through the final PCB, then route the required configuration interface to accessible test points. Preserve clock-source placement and return paths identified by the design tools, and avoid routing noisy external signals through the FPGA area. The four I/O-bank structure means bank assignments must be finalized before PCB routing because incompatible interface voltages cannot be moved arbitrarily between banks.
Do not treat A3P400-FG484, A3P400-FG484I, and A3P400-1FG484 as interchangeable solely because they use a 484-BGA package. Ordering suffixes can change temperature or speed grade, and the abbreviated catalog descriptions do not expose every electrical limit. Compare the manufacturer ordering table, pin assignment, supported I/O standards, absolute maximum ratings, and timing specifications. A different bitstream may also be required even when the package is physically unchanged.
合规信息
No specific compliance declaration was identified in the product data. The industrial suffix on A3P400-FG484I identifies an ordering grade but is not treated as proof of AEC-Q100 qualification.
