XA3S50-4PQG208I - 50K-Gate Automotive Spartan-3A FPGA | Xilinx
料号： XA3S50-4PQG208I ✓ 量产中XA3S50-4PQG208I 概述
An FPGA is a programmable digital-logic device whose lookup tables, flip-flops, routing, block RAM, and I/O blocks are configured after manufacture. Within the semiconductor hierarchy, the XA3S50-4PQG208I is an FPGA and programmable-logic device. It sits between fixed-function logic and larger application-specific programmable arrays, allowing automotive and industrial designs to implement parallel processing, control, communication, and interface logic on one device.
The device provides 192 configurable logic blocks, 124 user I/O, 73,728 RAM bits, and support for 17 single-ended and seven differential I/O standards, including LVDS. Digitally controlled termination supports signal-integrity control on suitable interfaces. The -4 speed designation identifies the device performance grade, while the I suffix identifies the supplied industrial-temperature configuration for demanding automotive and embedded environments.
The Spartan-3A XA architecture combines programmable logic resources with automotive-oriented product construction. A 90 nm process supports a compact, cost-sensitive implementation, while the 208-pin PQFP exposes more I/O than smaller FPGA packages. The 1.2 V core and 3.3 V I/O arrangement separates the low-voltage internal logic supply from the higher-voltage external interface supply, allowing I/O standards to be selected according to board-level requirements.
Typical uses include automotive body and chassis control modules, sensor aggregation, actuator control, gateway and communication logic, industrial automation controllers, and low-cost embedded signal-processing systems. The 124 I/O make the device useful for parallel sensor, control, communications, and debug interfaces, while 73,728 RAM bits support buffering, packet handling, and stateful control functions.
Designers should verify the complete PQFP-208 footprint, pin assignments, supported I/O standards, configuration interface, clocking, power sequencing, and decoupling against the manufacturer datasheet. Because automotive qualification and deployment depend on the complete product qualification record, engineers must also validate the applicable certification evidence for their specific production program.
This page combines the verified device specifications with practical selection guidance, sourcing context, package limitations, and clearly qualified replacement analysis. It distinguishes confirmed pin-compatible same-family options from unsupported cross-brand substitutions, helping engineers avoid assuming that a shared package alone guarantees a drop-in replacement.
直接替换替代料： XA3S50-4PQG208I ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： XA3S50-4PQG208I （相同外形与封装尺寸） ——差异在于 Automotive Qualification, Device Type, Differential I/O Standards, Logic Cells, Package.
XA3S50-4PQG208Q
✅ 直接替换联系询价
查看数据手册 →XA3S50-4PQG208C
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
XA3S50-4PQ208I
✅ 直接替换📋 参考替代料（不在目录中）
XA3S50-4PQG208I 最大额定值与电气特性
| Device Type | Spartan-3A automotive field-programmable gate array (FPGA) |
| System Gates | 50,000 gates |
| Logic Cells | 1,728 logic elements |
| Configurable Logic Blocks | 192 CLBs |
| Total RAM Bits | 73,728 bits |
| User I/O | 124 I/O |
| Maximum Data Rate per I/O | 622 Mb/s |
| Core Supply Voltage | 1.2 V |
| I/O Supply Voltage | 3.3 V |
| FPGA Technology | 90 nm |
| 封装 | 208-pin PQFP plastic quad flat package |
| Total Package Pins | 208 pins |
| Speed Grade | -4 |
| Temperature Grade | Industrial, -40°C to +100°C |
| Single-Ended I/O Standards | 17 standards |
| Differential I/O Standards | 7 standards, including LVDS |
| Digital Termination | Digitally controlled termination supported |
| Automotive Qualification | AEC-Q100 automotive-grade designation reported in verified source data |
XA3S50-4PQG208I 208 pins 引脚配置指南
XA3S50-4PQG208I（208 pins 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： XA3S50-4PQG208I.
请参阅 数据手册 以查看完整引脚配置。
典型应用
XA3S50-4PQG208I 适用于 6 应用s: Automotive Body Control, Automotive Sensor Aggregation, Vehicle Communication Gateway, Industrial Automation Controller, Motor and Actuator Control, Low-Cost Embedded Signal Processing.
Automotive Body Control
The XA3S50-4PQG208I fits cost-sensitive automotive body-control logic because it combines 1,728 logic elements, 192 CLBs, and 124 user I/O in a 208-pin PQFP package. The I/O count supports distributed switch inputs, lamp and relay outputs, diagnostic lines, and multiplexed vehicle-network connections without requiring multiple logic devices. Its 1.2 V core and 3.3 V I/O rails simplify partitioning into low-voltage internal logic and external vehicle interfaces. The -4 speed grade supports time-critical control tasks, while the XA automotive family designation makes the device a logical starting point for body and chassis modules. Final deployment still requires review of the exact qualification record, transient requirements, pinout, clocking, and power sequencing in the manufacturer documentation.
推荐
Automotive Sensor Aggregation
The XA3S50-4PQG208I can aggregate several automotive sensors because its 124 user I/O provide substantial parallel connectivity for digital sensor inputs, while 1,728 logic elements implement filtering, diagnostics, and data formatting. The 73,728 RAM bits support bounded buffering of sampled data or communication frames. For applications operating at 622 Mb/s or below per I/O, the device provides the stated performance class while using a 3.3 V I/O rail for compatible external interfaces. Engineers should partition analog sensing circuitry from the FPGA, validate signal levels for each selected I/O standard, and confirm acquisition timing against the -4 device performance. Configuration storage, watchdog behavior, and diagnostic coverage must also be designed into the automotive safety process.
推荐
Vehicle Communication Gateway
The XA3S50-4PQG208I is suitable for a cost-conscious vehicle communication gateway that must combine protocol conversion, message routing, and local diagnostics. Its 124 I/O leave room for multiple digital communication interfaces, and the 50,000-system-gate device provides enough parallel logic for frame handling without moving to a larger Spartan-3A density. The 73,728 RAM bits can support queues, counters, and protocol workspace, while the -4 grade targets higher clock performance than lower-grade options. The trade-off is that hard real-time interfaces and high-bandwidth aggregation may exceed the device’s available logic or RAM. Designers should therefore define channel counts, maximum frame rates, and protocol concurrency before committing to this density and should verify differential I/O requirements directly against the datasheet.
推荐
Industrial Automation Controller
The XA3S50-4PQG208I can serve as the central logic device in an industrial automation controller because it offers 124 user I/O and 1,728 logic elements for machine-state sequencing, discrete I/O, and communication coordination. The -40°C to +100°C industrial temperature range supports equipment deployed across controlled factory environments. A 1.2 V core and 3.3 V I/O structure support contemporary mixed-voltage board design, while 73,728 RAM bits can hold diagnostic histories and short packet buffers. For motor, relay, or high-voltage outputs, the FPGA should drive suitable isolation and driver circuitry rather than directly switching load current. Engineers must also account for package parasitics, ground planning, I/O standards, and asynchronous timing constraints on every signal connected to the 208-pin PQFP.
推荐
Motor and Actuator Control
The XA3S50-4PQG208I is appropriate for distributed actuator-control logic where multiple digital outputs must be coordinated with safety monitoring and local feedback. Its 192 CLBs can implement motion sequencing, while 124 I/O provide connections for position sensors, limit switches, driver enables, and diagnostic inputs. The -4 speed grade helps preserve deterministic control timing, and the automotive XA positioning is valuable where temperature and reliability requirements are stringent. The FPGA should operate at the logic level, while external MOSFET drivers, isolation, and protection components handle power conversion. A key design trade-off is that the 73,728 RAM bits may be insufficient for sophisticated fieldbus stacks or large history buffers, so application memory requirements should be reviewed before finalizing the architecture.
推荐
Low-Cost Embedded Signal Processing
The XA3S50-4PQG208I can implement parallel digital signal-processing functions where fixed pipelines are preferable to a higher-cost processor-based design. Its 1,728 logic elements and 192 CLBs can create parallel arithmetic, filtering, thresholding, and data-selection stages, while the stated 622 Mb/s per-I/O performance provides a high-speed interface ceiling. The 73,728 RAM bits are useful for sample buffers and intermediate results, but larger FIR pipelines or frame histories may require external memory. Because this is a compact 208-pin PQFP rather than a high-pin-count BGA, board escape routing and signal integrity must be checked early. Exact DSP-clock limits and achievable internal throughput were not included in the verified excerpts and should be obtained from the manufacturer datasheet and timing reports.
推荐
推荐产品汇总
工程参考数据： XA3S50-4PQG208I ——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 | XA3S50-4PQG208Q | XA3S50-4PQG208C | XA3S50-4PQ208I |
|---|---|---|---|---|
| Brand | Xilinx | Xilinx | Xilinx | Xilinx |
| Package | 208-pin PQFP (PQG208) | 208-pin PQFP (PQG208) - same package outline | 208-pin PQFP (PQG208) - same package outline | 208-pin PQFP (PQ208) - same package outline |
| System Gates | 50,000 gates | 50,000 gates | 50,000 gates | 50,000 gates |
| Logic Elements | 1,728 logic elements | 1,728 logic elements | 1,728 logic elements | 1,728 logic elements |
| Configurable Logic Blocks | 192 CLBs | 192 CLBs | 192 CLBs | 192 CLBs |
| Total RAM | 73,728 bits | 73,728 bits | 73,728 bits | 73,728 bits |
| User I/O | 124 I/O | 124 I/O | 124 I/O | 124 I/O |
| Core and I/O Supply | 1.2 V core, 3.3 V I/O | 1.2 V core, 3.3 V I/O | 1.2 V core, 3.3 V I/O | 1.2 V core, 3.3 V I/O |
| Speed Grade | -4 | -4 | -4 | -4 |
关键差异点
- Automotive XA family positioning （对比 XA3S50-4PQG208C)
- 124 user I/O in a 208-pin PQFP （对比 XA3S50-4PQ208I)
- Verified 622 Mb/s per-I/O performance class （对比 XA3S50-4PQG208Q)
设计说明
Plan separate regulation for the 1.2 V core and 3.3 V I/O rails, using the manufacturer power-sequencing and decoupling guidance before PCB release. The verified material does not provide recommended capacitor values, rail current limits, or startup timing, so engineers must obtain those figures from the official datasheet. Account for simultaneous I/O and core activity when sizing supplies rather than relying on nominal logic-load estimates.
Use the exact 208-pin PQFP land pattern from the manufacturer package drawing and verify pin 1 orientation against the board silkscreen. The supplied excerpts identify a gull-wing PQFP with 208 terminals but do not include the mechanical dimensions or a complete numbered pin table. Do not infer the footprint from a generic QFP library, and complete escape-routing and assembly-clearance reviews before fabrication.
Assign each external signal to a supported I/O standard after reviewing voltage, slew, and termination requirements. The device supports 17 single-ended and seven differential standards, including LVDS, and offers digitally controlled termination. Routing is especially important for differential pairs and high-rate interfaces; maintain the datasheet-recommended geometry and provide clean return paths even though the verified excerpts do not provide a complete board-level stack-up recommendation.
Do not treat a same-package MPN as automatically equivalent. For XA3S50-4PQG208I, verify the ordering suffix, temperature grade, automotive qualification, speed grade, configuration support, and lifecycle status for every proposed substitute. Bitstream compatibility also depends on the device ID and project constraints, so a successful PCB fit is only the first stage of a controlled replacement review.
合规信息
The verified source identifies the device as an AEC-Q100 automotive-grade Xilinx Spartan-3A FPGA. RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations were not provided and therefore remain unknown.
