XC3S50A-4TQ144I - 50K Spartan-3A FPGA | AMD/Xilinx
料号： XC3S50A-4TQ144I ✓ 量产中XC3S50A-4TQ144I 概述
A field-programmable gate array, or FPGA, is a semiconductor whose digital logic, interconnect, and I/O behavior can be programmed after manufacture. Within the product hierarchy, an FPGA is a programmable logic device and ultimately a semiconductor. Compared with a fixed-function application-specific integrated circuit, an FPGA allows parallel hardware functions, interface adaptation, and design revisions without changing the PCB. The Spartan-3A family is positioned for compact, cost-sensitive designs requiring moderate logic density and extensive user I/O.
The Spartan-3A architecture provides five principal programmable functional elements, including configurable logic blocks, programmable interconnect, dedicated block RAM, input/output blocks, and configuration resources. Each configurable logic block contains four-input lookup tables and flip-flop resources for implementing combinational and sequential logic. The available 1,584 logic cells and 55,296 RAM bits support control logic, bus arbitration, low-speed communication interfaces, instrumentation, and general-purpose digital processing.
With 108 I/O, the XC3S50A-4TQ144I offers more interface capacity than the smallest devices in the Spartan-3A family. The 144-LQFP package exposes those I/O along with configuration and power pins on a conventional surface-mount footprint. The 50,000-gate rating describes the family’s system-gate scale rather than a guaranteed clock rate, while the -4 speed designation and the manufacturer’s timing specifications determine actual performance. Configuration and pinout details should be verified against the DS529 family datasheet before PCB release.
Typical applications include industrial control, telecommunications equipment, consumer electronics, embedded instrumentation, interface bridging, and low-density signal-processing systems. In each case, the combination of 1,584 logic cells, 55,296 RAM bits, 108 I/O, and a compact 144-lead package allows logic and interface functions to be consolidated without adopting a larger FPGA or a separate microcontroller for basic control tasks.
Designers should preserve the required core-supply decoupling, use the manufacturer-recommended configuration interface, and confirm every signal’s I/O standard, drive strength, slew rate, and termination requirements against the DS529 datasheet. Programming tools, bitstream compatibility, and end-of-life considerations should also be reviewed because FPGA toolchains and family support evolve over time.
This page consolidates verified distributor availability, package and resource details, drop-in replacement analysis, and practical design guidance into a compact engineering reference. It distinguishes documented device facts from parameters that still require manufacturer-data or board-level confirmation.
直接替换替代料： XC3S50A-4TQ144I ——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： XC3S50A-4TQ144I （相同外形与封装尺寸） ——差异在于 Device Type, Package Type, Speed Grade, System Gates.
XC3S50AN-4TQ144I
✅ 直接替换📋 参考替代料（不在目录中）
XC3S50AN-4TQG144I
✅ 直接替换📋 参考替代料（不在目录中）
XC3S50A-4TQG144C
✅ 直接替换📋 参考替代料（不在目录中）
XC3S50A-5TQ144C
✅ 直接替换📋 参考替代料（不在目录中）
XC3S50AN-4TQ144C
✅ 直接替换📋 参考替代料（不在目录中）
XC3S50A-4TQ144I 最大额定值与电气特性
| Device Type | Spartan-3A FPGA |
| System Gates | 50,000 gates |
| Logic Cells | 1,584 cells |
| Configurable Logic Blocks | 176 CLBs |
| Block RAM | 55,296 bits |
| User I/O | 108 I/O |
| Core Supply Voltage | 1.14 V to 1.26 V |
| 工作温度 | -40°C to 100°C junction temperature |
| Speed Grade | -4 |
| 封装 | 144-LQFP |
| Package Type | TQFP-144 surface-mount package |
| 安装类型 | Surface Mount |
| Programmable Functional Elements | 5 elements |
| FPGA Logic Implementation | 4-input lookup tables with flip-flop resources |
XC3S50A-4TQ144I tqfp-144 surface-mount package 引脚配置指南
XC3S50A-4TQ144I（tqfp-144 surface-mount package 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： XC3S50A-4TQ144I.
请参阅 数据手册 以查看完整引脚配置。
典型应用
XC3S50A-4TQ144I 适用于 6 应用s: Industrial Machine Control, Telecommunications Interface Bridging, Consumer and Embedded Electronics, Instrumentation and Data Acquisition, Low-Speed Signal Processing, Programmable Interface Aggregation.
Industrial Machine Control
The XC3S50A-4TQ144I fits compact industrial machine-control logic because it combines 1,584 configurable logic cells, 55,296 RAM bits, and 108 I/O in a 144-LQFP package. Its verified -40°C to 100°C junction-temperature range supports use in industrial environments where operating conditions exceed consumer-grade limits. Designers can implement sequencing, interlocks, status monitoring, and peripheral-control functions in one programmable device. The principal benefit is hardware consolidation: several small controller and interface sections can share the FPGA while retaining deterministic parallel operation. Before release, verify each I/O voltage, current, slew-rate, and termination requirement against the DS529 pinout and verify the complete design for the target -4 speed grade.
推荐
Telecommunications Interface Bridging
The XC3S50A-4TQ144I is appropriate for telecommunications interface bridging because its 108 I/O provide substantial parallel connectivity and its 1,584 logic cells can implement protocol conversion, framing, buffering, and control logic. The 55,296 RAM bits support modest packet queues, status structures, and timing buffers without requiring an external memory device. A 1.14 V to 1.26 V core operating range allows integration into a controlled FPGA power tree, while the 144-LQFP package provides a conventional surface-mount assembly option. Because the available data does not include individual I/O standards or transceiver capabilities, engineers must confirm the physical interface, impedance, voltage levels, and timing margins in the family datasheet before selecting this device.
推荐
Consumer and Embedded Electronics
The XC3S50A-4TQ144I can consolidate programmable control, display-interface logic, key scanning, and peripheral arbitration in compact consumer or embedded electronics. Its 50,000-gate scale and 1,584 logic cells are sufficient for low- to moderate-complexity fixed logic, while 108 I/O provide flexibility for external sensors, memories, and communications devices. The 144-LQFP footprint makes the component accessible to conventional surface-mount assembly and inspection processes. A design advantage is that late interface revisions can often be handled in the FPGA configuration rather than through PCB respins. Engineers should confirm the consumer-temperature requirement against the verified industrial range, review lifecycle and toolchain support, and validate all power, configuration, and I/O assumptions against the AMD DS529 documentation.
推荐
Instrumentation and Data Acquisition
The XC3S50A-4TQ144I is useful in instrumentation and data-acquisition front ends where parallel control and signal conditioning must be coordinated deterministically. The device supplies 1,584 logic cells for counters, state machines, trigger logic, and digital filtering, plus 55,296 RAM bits for acquisition buffers and working storage. Its 108 I/O provide connections to sensors, converters, displays, and communication transceivers, allowing a compact instrument architecture without several separate logic devices. The verified 1.14 V to 1.26 V supply range helps simplify core-rail planning, but analog front-end accuracy remains a separate design issue. Verify the FPGA I/O thresholds, timing constraints, clock uncertainty, and input tolerances for every connected converter before releasing the instrumentation design.
推荐
Low-Speed Signal Processing
The XC3S50A-4TQ144I supports low-speed digital signal processing because its 1,584 configurable logic cells can implement parallel filters, correlation, counting, modulation, or decoding stages. The 55,296-bit block-RAM resource provides local storage for samples, coefficients, and intermediate results, while 108 I/O enable parallel data capture. Such a design benefits from implementing repetitive datapaths in hardware rather than relying on sequential microcontroller execution. The device does not replace a high-speed DSP when the algorithm requires substantially greater throughput, but it is suitable for moderate data rates and pipeline-oriented control. Timing closure must be based on the -4 grade and actual I/O timing paths, while power should be evaluated using real switching activity and the family’s documented power tables.
推荐
Programmable Interface Aggregation
The XC3S50A-4TQ144I is well suited to aggregating several low-speed interfaces when a system needs flexible logic and 108 user I/O. It can implement test-point selection, protocol translation, bus arbitration, breakpoint logic, and supervisory sequencing in parallel. This is valuable in prototype platforms and industrial equipment where multiple external functions must be brought together without constructing the system entirely from fixed logic. The 144-LQFP package retains individual I/O access rather than using a very fine-pitch ball-grid array, and the 55,296 RAM bits can support buffering or test-history functions. Before layout release, engineers must check bank-compatible I/O standards, simultaneous-switching-noise constraints, configuration pins, clock routing, and the pin assignments documented for the exact TQ144 package.
推荐
推荐产品汇总
工程参考数据： XC3S50A-4TQ144I ——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 | XC3S50AN-4TQ144I | XC3S50AN-4TQG144I | XC3S50A-4TQG144C | XC3S50A-5TQ144C | XC3S50AN-4TQ144C |
|---|---|---|---|---|---|---|
| Brand | AMD/Xilinx | AMD/Xilinx | AMD/Xilinx | AMD/Xilinx | AMD/Xilinx | AMD/Xilinx |
| Package | 144-LQFP | 144-LQFP - same | 144-LQFP - same | 144-LQFP - same | 144-LQFP - same | 144-LQFP - same |
| Series | Spartan-3A | Spartan-3AN | Spartan-3AN | Spartan-3A | Spartan-3A | Spartan-3AN |
| System Gates | 50,000 gates | 50,000 gates | 50,000 gates | 50,000 gates | 50,000 gates | 50,000 gates |
| Logic Cells | 1,584 cells | 1,584 cells | 1,584 cells | 1,584 cells | 1,584 cells | 1,584 cells |
| RAM Bits | 55,296 bits | 55,296 bits | 55,296 bits | 55,296 bits | 55,296 bits | 55,296 bits |
| User I/O | 108 I/O | 108 I/O | 108 I/O | 108 I/O | 108 I/O | 108 I/O |
| Speed Grade | -4 | -4 | -4 | -4 | -5 | -4 |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
关键差异点
- Industrial temperature range with substantial I/O capacity （对比 XC3S50A-4TQG144C)
- Matches the same-package power-focused AN alternatives at the verified resource level （对比 XC3S50AN-4TQ144I)
- Original -4 speed-grade ordering option （对比 XC3S50A-5TQ144C)
设计说明
Design the core rail inside the verified 1.14 V to 1.26 V operating range and follow the DS529 power architecture and recommended bypass network. Separate compatible I/O banks from the core supply, account for configuration-pin requirements, and calculate dissipation from actual core voltage, I/O load, and switching activity. Do not assume that the XC3S50AN power characteristics are numerically identical to the original Spartan-3A because the supplied data does not provide comparative current tables.
Use the exact TQ144 package drawing and the family pinout when assigning configuration pins, clock inputs, user I/O, and power connections. Keep decoupling close to the relevant supply pins, provide a clean configuration path, and route clocks away from high-switching outputs. Although all listed alternatives use a 144-LQFP footprint, suffix changes can affect grade, temperature, or family behavior, so the PCB may remain unchanged while the schematic qualification must be repeated.
Do not treat the 50,000-gate rating as a guaranteed clock frequency and do not substitute a device solely because the package matches. Validate the -4 or -5 timing grade, 1.14 V to 1.26 V core range, I/O voltage standards, temperature grade, configuration compatibility, and design-tool support. For a redesign, generate a fresh timing report and compare every pin against the manufacturer pin table because a footprint-compatible alternative can still change power-management or timing behavior.
Plan the 144-LQFP layout with assembly clearances, thermal copper access, and testability in mind. Match I/O drive and slew-rate settings to the attached circuit rather than assuming every bank has identical limits. If replacing the original part with an AN-family device, review its power architecture and configuration requirements before release. Maintain a conservative replacement checklist that records package, speed grade, temperature grade, core supply, configuration bitstream, and schematic-equivalence decisions.
合规信息
The supplied verified data does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is marked not applicable because the target is an industrial-temperature FPGA rather than a stated automotive-qualified ordering code.
