XC3S400-4PQ208I - 400K Gate Spartan-3 FPGA | AMD | Industrial
부품 번호: XC3S400-4PQ208I ✗ 단종XC3S400-4PQ208I 개요
드롭인 대체품: XC3S400-4PQ208I — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
XC3S400-4PQG208I
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
XC3S400-4PQG208C
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
XC3S400-5PQG208C
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
XC3S400-4PQ208I 최대 정격 & 전기적 특성
| Device Type | Spartan-3 Field Programmable Gate Array (FPGA) |
| System Gates | 400000 |
| Logic Cells | 8064 |
| Inputs/Outputs | 141 |
| 최대 클록 주파수 | 630 MHz |
| Core Supply Voltage | 1.2 V |
| FPGA Technology | 90 nm |
| 패키지 | 208-BFQFP |
| Number of Terminals | 208 |
| Package Shape | Square |
| 장착 스타일 | Surface Mount |
| Terminal Form | Gull Wing |
| Lead-Free Status | Lead Free |
| Speed Grade | -4 |
| Temperature Grade | Industrial |
XC3S400-4PQ208I square 핀 구성 가이드
XC3S400-4PQ208I(square 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.
다음에 대한 상세 핀아웃 데이터 없음: XC3S400-4PQ208I.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
XC3S400-4PQ208I 적합 용도: 6 애플리케이션s: Industrial Automation and Control, Communications Interface and Protocol Bridging, Digital Signal Processing, Data Acquisition and Instrumentation, Embedded System Control Hub, Consumer and Communication Equipment.
Industrial Automation and Control
XC3S400-4PQ208I fits industrial automation controllers where parallel logic, multiple I/O, and programmable timing are more valuable than minimum unit cost. Its verified 8064 logic cells can host state machines, sequencing logic, interlocks, counters, and communication-control functions, while 141 I/O provide connections to sensors, actuators, status indicators, and field-bus transceivers. The I industrial-grade ordering designation makes it the appropriate starting point when ambient-temperature requirements exceed commercial limits. A practical implementation places the FPGA beside optoisolated interface circuits, uses a stable low-noise 1.2 V core rail, and validates timing with the actual external devices. The 630 MHz maximum clock is not a guarantee that every design will close at that frequency; actual timing depends on logic depth, routing, constraints, and I/O loading.
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Communications Interface and Protocol Bridging
XC3S400-4PQ208I is suitable for communications front ends that need concurrent framing, buffering, status, and protocol conversion. The 141 verified I/O allow parallel data buses and control signals to coexist with external transceivers, while 8064 logic cells provide enough parallel processing for packet assembly, byte alignment, FIFO control, and interface timing. The device is particularly useful when multiple legacy buses must be bridged without a microprocessor handling every real-time transaction. A sound implementation constrains clock domains explicitly, synchronizes asynchronous inputs, keeps high-speed routing away from sensitive configuration paths, and validates protocol behavior using boundary-scan and directed test vectors. The 630 MHz device capability provides margin for pipelined logic, although external transceiver bandwidth and PCB signal integrity usually constrain end-to-end throughput first.
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Digital Signal Processing
XC3S400-4PQ208I can implement parallel digital signal-processing functions in consumer, industrial, and communications equipment. Its 8064 logic cells support filter pipelines, correlation logic, digital delay, waveform generation, and fixed-point arithmetic, while the 208-pin package provides connections for parallel ADC or DAC data. The verified 630 MHz maximum clock is useful for pipelined architectures that require short combinational paths. Engineers should map arithmetic to available dedicated resources where possible and use the vendor timing tools to establish whether DSP blocks, multipliers, block RAM, and distributed RAM satisfy the target design. Because detailed resource counts and memory specifications are not included in the supplied search excerpts, they must be confirmed in DS099. Good practice is to prototype the arithmetic kernel, benchmark it with realistic word lengths, and reserve margin for routing congestion before committing to the full board.
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Data Acquisition and Instrumentation
XC3S400-4PQ208I is appropriate for data-acquisition front ends that must coordinate sensors, multiplexers, memory, and a host interface. The 141 I/O provide parallel sensor connections and control outputs, and the programmable logic can implement calibration tables, trigger sequencing, digital filtering, and data packing before transmission. For laboratory or industrial instrumentation, the industrial-temperature suffix is the relevant selection advantage over the C-listed commercial alternative. The design should separate analog front-end routing from FPGA clocking and configuration signals, use controlled clock distribution, and define deterministic acquisition timing. The 1.2 V core supply requires local decoupling and a quiet power source, while configuration storage must boot reliably after power cycling. Verify exact I/O voltage limits, input thresholds, clock tolerances, and timing margins against the manufacturer documentation before fabrication.
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Embedded System Control Hub
XC3S400-4PQ208I can serve as the central programmable controller in an embedded system combining memory control, peripheral management, and real-time sequencing. The 8064 logic cells are substantial enough for multiple concurrent state machines and hardware-assisted data paths, while the 208-pin package reduces the need for external glue logic. Designers can use the FPGA to supervise boot sequencing, monitor reset and power-good signals, arbitrate bus access, and accelerate peripheral data movement while a microcontroller handles higher-level software. This architecture benefits from a documented register map and bus handoff protocol so ownership changes are deterministic. Power-up configuration must be tested across voltage ramps, and any watchdog behavior should be independent of the programmable logic path that could fail. The supplied data does not list dedicated block RAM or DSP resources, so resource budgeting must be completed in the actual Xilinx design tool.
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Consumer and Communication Equipment
XC3S400-4PQ208I can implement programmable control, display timing, storage interfaces, and product-specific logic in compact consumer or communications equipment. Its 8064 logic cells and 141 I/O allow timing generation, buffer management, and multiple peripheral interfaces to be consolidated, reducing component count in cost-sensitive products. The Spartan-3 90 nm implementation provides a conventional FPGA route for legacy designs that cannot use a higher-cost FPGA family. Practical designs must account for configuration memory, boot behavior, connector pin accessibility, and the difference between the 208-pin footprint and smaller PQFP alternatives. Since the supplied data does not verify exact operating-temperature limits or all I/O standards, engineers must not infer them from the distributor descriptions. Confirm package drawing, pin assignments, voltage domains, and timing before schematic sign-off.
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추천 제품 요약
엔지니어링 참조 데이터: XC3S400-4PQ208I — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | XC3S400-4PQG208I | XC3S400-4PQG208C | XC3S400-5PQG208C |
|---|---|---|---|---|
| Package | 208-BFQFP | 208-BFQFP | 208-BFQFP | 208-BFQFP |
| Brand | AMD | AMD | AMD | AMD |
| Device Family | Spartan-3 FPGA | Spartan-3 FPGA | Spartan-3 FPGA | Spartan-3 FPGA |
| Speed Grade | -4 | -4 | -4 | -5 |
| Temperature Designation | I industrial | I industrial | C commercial | C commercial |
| Technology | 90 nm | 90 nm | 90 nm | 90 nm |
주요 차별점
- Industrial temperature ordering option (vs XC3S400-4PQG208C)
- Target -4 speed grade with industrial designation (vs XC3S400-5PQG208C)
- Closest same-package ordering-code candidate (vs XC3S400-4PQG208I)
설계 노트
The verified core supply is 1.2 V, but the complete power tree and current limits are not included in the supplied data. Do not select regulators, capacitors, or power-plane widths from general Spartan-3 guidance alone; use the manufacturer power requirements for the exact ordering code. Place local high-frequency bypass capacitors at the supply pins, provide a clean return path, and use separate filtering for clock and configuration connections. Estimated thermal and dissipation values cannot be provided without verified current data.
Use the manufacturer 208-BFQFP package drawing rather than generic PQFP dimensions when defining the land pattern. Confirm pin-1 orientation, courtyard clearances, solder mask, and exposed thermal or lead geometry from the official package data. The verified package is a square, surface-mount, gull-wing 208-terminal device. A pinout table was not present in the supplied material, so this page intentionally does not guess individual pin names or provide a fabricated diagram.
Route clocks as controlled-impedance nets and keep them away from configuration pins and sensitive data buses. Use a defined clock source, constrain all clock relationships, and provide deterministic reset or power-good sequencing before releasing functional logic. Although the device is listed with a maximum clock frequency of 630 MHz, that figure is a device-level maximum and does not guarantee timing closure; route length, fanout, logic depth, and I/O loading must be evaluated by the FPGA timing tools.
Do not substitute the commercial C-designated parts listed as alternatives for the I-designated target without checking environmental requirements, and do not treat the -4 and -5 ordering suffixes as interchangeable. Also verify configuration-memory support, JTAG behavior, and the exact package drawing before manufacturing. The supplied search data confirms device family and package characteristics but does not provide the complete ordering information table, pinout, or qualification report.
규정 준수 정보
The verified DigiKey and related part-search descriptions identify the 208-BFQFP package as lead free. No verified RoHS, REACH, halogen-free, conflict-minerals, or AEC-Q100 statement was supplied. The industrial suffix must not be treated as automotive qualification.
