The XC3S400A-4FT256C is a versatile field-programmable gate array (FPGA) from Xilinx’s acclaimed Spartan-3A family, designed to deliver exceptional performance and flexibility for a wide range of digital design applications. This powerful FPGA combines advanced architecture with cost-effective implementation, making it an ideal choice for engineers and developers seeking reliable programmable logic solutions.
Product Specifications
The XC3S400A-4FT256C features robust specifications that meet demanding application requirements:
Core Architecture:
- Logic Cells: 8,064 system gates with 400,000 equivalent system gates
- Configurable Logic Blocks (CLBs): 896 CLBs containing 1,792 logic slices
- Block RAM: 20 blocks providing 360 Kbits of total memory
- Distributed RAM: 25 Kbits available for flexible data storage
I/O and Connectivity:
- Package Type: FT256 (Fine-Pitch Ball Grid Array)
- Total I/O Pins: 190 user I/O pins
- Speed Grade: -4 (high-performance grade)
- Operating Voltage: 1.2V core with 3.3V I/O compatibility
Digital Signal Processing:
- Dedicated multipliers: 16 embedded 18×18 multipliers
- DSP slices optimized for high-speed arithmetic operations
- Enhanced performance for signal processing applications
Clock Management:
- Digital Clock Managers (DCMs): 4 DCMs for advanced clock control
- Phase-locked loops for precise frequency synthesis
- Clock distribution networks for system-wide synchronization
Price Information
The XC3S400A-4FT256C offers excellent value proposition in the mid-range FPGA market segment. Pricing varies based on quantity, distribution channel, and current market conditions. For the most current pricing information and volume discounts, contact authorized Xilinx distributors or check with major electronic component suppliers. Educational institutions and development teams may qualify for special pricing programs.
Documents & Media
Technical Documentation:
- XC3S400A-4FT256C datasheet with complete electrical specifications
- Spartan-3A FPGA family user guide and reference manual
- Package and pinout documentation for FT256 ball grid array
- AC/DC switching characteristics and timing specifications
Design Resources:
- Xilinx ISE Design Suite compatibility guides
- Application notes for common implementation scenarios
- PCB layout guidelines and thermal management recommendations
- Pin mapping utilities and constraint file templates
Software Tools:
- Compatible with Xilinx Vivado and ISE development environments
- IP core libraries and reference designs
- Simulation models for various EDA tools
- Programming and configuration utilities
Related Resources
Development Boards: Several evaluation and development platforms support the XC3S400A-4FT256C, enabling rapid prototyping and system validation. These boards typically include power supplies, configuration interfaces, and various I/O connectors.
IP Cores and Reference Designs: Xilinx provides extensive IP core libraries optimized for Spartan-3A devices, including processors, communication interfaces, and DSP functions. Reference designs demonstrate best practices for common applications.
Design Services: Professional design services and consulting support are available through Xilinx partners and certified design houses, offering expertise in FPGA implementation, optimization, and system integration.
Training and Education: Comprehensive training materials, online courses, and certification programs help engineers maximize the potential of the XC3S400A-4FT256C in their designs.
Environmental & Export Classifications
Environmental Specifications:
- Operating Temperature Range: 0ยฐC to +85ยฐC (commercial grade)
- Storage Temperature: -65ยฐC to +150ยฐC
- Humidity Tolerance: Up to 95% non-condensing
- RoHS compliant with lead-free manufacturing processes
Reliability and Quality:
- Automotive-qualified versions available for harsh environment applications
- Comprehensive quality assurance and testing procedures
- Long-term availability commitment for production designs
Export and Regulatory:
- Export Control Classification Number (ECCN) as designated by U.S. export regulations
- Compliant with international environmental and safety standards
- CE marking and FCC certification for applicable regions
Packaging and Handling:
- Moisture sensitivity level rating for proper storage and handling
- ESD protection requirements and handling procedures
- Tape and reel packaging options for automated assembly
The XC3S400A-4FT256C represents a mature, well-supported FPGA solution that continues to serve diverse applications across telecommunications, industrial automation, consumer electronics, and educational markets. Its balanced feature set and proven reliability make it an excellent choice for both new designs and product upgrades requiring enhanced programmable logic capabilities.
