1. Product Specifications
Core Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Logic Elements/Cells | 950 | Configurable logic blocks for custom digital implementations |
| System Gates | 20,000 | Total equivalent gate count for design complexity estimation |
| Number of LABs/CLBs | 400 | Logic Array Blocks/Configurable Logic Blocks |
| Total RAM Bits | 12,800 | On-chip SelectRAMโข memory for data storage |
| I/O Count | 113 | Dedicated input/output pins for external connectivity |
| Operating Frequency | 166 MHz | Maximum system performance capability |
| Supply Voltage | 4.75V ~ 5.25V | Operating voltage range (5V nominal) |
| Package Type | 144-TQFP (20x20mm) | Thin Quad Flat Pack for surface mount assembly |
| Operating Temperature | 0ยฐC to +85ยฐC (TJ) | Commercial temperature grade junction rating |
| Mounting Type | Surface Mount | SMT-compatible for automated assembly |
Key Features of XCS20-4TQ144C
- High-Performance Architecture: Built on proven XC4000-based technology with streamlined feature set optimized for production use
- On-Chip SelectRAMโข Memory: Integrated memory blocks for efficient data buffering and storage
- Unlimited Reprogrammability: Field-configurable logic allowing design modifications and updates
- IEEE 1149.1-Compatible Boundary Scan: JTAG support for programming, testing, and debugging
- PCI Compliance: Fully compatible with PCI bus specifications for system integration
- Dedicated Carry Logic: High-speed arithmetic operations with optimized carry chains
- Eight Global Clock Networks: Low-skew clock distribution for synchronous design requirements
- Internal 3-State Bus Capability: Efficient resource sharing and signal routing
Speed Grade and Performance
The XCS20-4TQ144C features a -4 speed grade, providing balanced performance characteristics suitable for most commercial applications. The 166 MHz operating frequency ensures adequate processing capability for real-time applications, digital signal processing, and control systems.
2. Price
Current Market Pricing for XCS20-4TQ144C
Price Range: $18.14 – $58.82 per unit (depending on quantity and supplier)
Volume Pricing Tiers:
- 1-47 pieces: $35.21 – $58.82
- 48-89 pieces: $42.69 – $50.81
- 90-199 pieces: $18.14 – $40.71
- 200-499 pieces: $23.16 – $37.76
- 500-999 pieces: $21.58 – $31.86
- 1,000+ pieces: $20.39 – $28.91
Pricing subject to market conditions, supplier availability, and order specifications. Contact authorized distributors for current quotations and volume discounts.
Cost-Effectiveness Benefits
The XCS20-4TQ144C offers significant cost advantages over custom ASIC development:
- No NRE Costs: Eliminates non-recurring engineering expenses associated with ASIC design
- Reduced Time-to-Market: Immediate availability versus months-long ASIC development cycles
- Lower Risk Profile: Field-programmable nature allows design iteration without silicon respins
- Volume Economics: Competitive per-unit pricing in production quantities
3. Documents & Media
Official Documentation
Primary Technical Resources
- Spartan and Spartan-XL Families Data Sheet: Comprehensive electrical specifications and architectural details
- XCS20-4TQ144C Product Specification: Device-specific parameters and performance characteristics
- Package Information Document: Mechanical drawings, pin assignments, and thermal specifications
- Programming and Configuration Guide: Bitstream generation and device configuration procedures
Application Support Materials
- Design Guidelines: Best practices for PCB layout, signal integrity, and thermal management
- Reference Design Examples: Proven implementation patterns for common applications
- Migration Guide: Transition assistance from other FPGA families or ASIC implementations
- Xilinx ISE Design Suite Documentation: Complete development environment user guides
Quality and Compliance Documentation
- Test Report Summaries: Electrical characterization and reliability test results
- Package Marking Information: Device identification and traceability specifications
- Handling and Storage Guidelines: Moisture sensitivity and ESD protection requirements
Development Tools and Software
The XCS20-4TQ144C is fully supported by Xilinx ISE Design Suite, providing:
- Synthesis Tools: HDL compilation and optimization
- Implementation Software: Place-and-route with timing closure
- Simulation Environment: Functional and timing verification capabilities
- Programming Utilities: Device configuration and debugging tools
4. Related Resources
Development Platforms and Evaluation Kits
While specific evaluation boards for the XCS20-4TQ144C may have limited availability due to the legacy nature of the Spartan family, engineers can leverage:
Alternative Development Options
- Spartan Development Boards: Compatible platforms for initial prototyping and concept validation
- Third-Party Evaluation Modules: Community-developed boards supporting 144-TQFP packages
- Custom Prototyping Solutions: PCB design services for application-specific development platforms
Technical Support Resources
Online Communities and Forums
- Xilinx Community Forums: Peer-to-peer technical discussions and problem resolution
- Application Notes Database: Searchable repository of implementation techniques and solutions
- Design Examples Library: Reference implementations for common design patterns
Professional Services
- Design Consultation: Expert guidance for complex implementation challenges
- Training Programs: FPGA design methodology and tool-specific instruction
- Migration Services: Professional assistance for ASIC-to-FPGA conversions
Compatible IP Cores and Solutions
The XCS20-4TQ144C supports integration with:
- AllianceCORE Solutions: Pre-verified IP blocks for common functions
- LogiCOREโข IP: Xilinx-developed intellectual property modules
- Third-Party IP: Industry-standard interfaces and protocol implementations
5. Environmental & Export Classifications
Environmental Compliance
RoHS Compliance Status
Status: Not RoHS Compliant (Legacy Product)
- The XCS20-4TQ144C was developed prior to RoHS directive implementation
- Contains lead-based materials in package construction and interconnects
- Alternative RoHS-compliant devices available in newer Xilinx FPGA families
Temperature Classification
- Commercial Grade (C): 0ยฐC to +85ยฐC junction temperature
- Package Thermal Characteristics: ฮธJA = 45ยฐC/W (typical in still air)
- Maximum Junction Temperature: +85ยฐC for reliable operation
- Storage Temperature Range: -55ยฐC to +150ยฐC
Moisture Sensitivity Level (MSL)
MSL Rating: Level 3 (168 hours)
- Requires controlled storage in moisture barrier bags with desiccant
- Floor life of 168 hours at โค30ยฐC/60% relative humidity after bag opening
- Baking requirements: 125ยฐC for 24 hours if exposure limits exceeded
Reliability and Quality Standards
- MTBF: >1,000,000 hours at 55ยฐC junction temperature
- Quality Grade: Commercial/Industrial standard
- Manufacturing Process: Mature silicon technology with proven reliability record
Export Control Classification
U.S. Export Administration Regulations
ECCN (Export Control Classification Number): EAR99
- Generally considered low-technology for export control purposes
- Standard commercial export procedures apply
- No special licensing required for most destinations
HTSUS Classification
Harmonized Tariff Schedule Code: 8542.39.0001
- Classification: Electronic integrated circuits and microassemblies
- Duty rates vary by country of origin and destination
International Trade Compliance
- REACH Regulation: Non-REACH product classification
- Country of Origin: Manufacturing location varies by production facility
- Documentation Requirements: Commercial invoice, packing list, and technical specifications for customs clearance
Environmental Impact Considerations
End-of-Life Management
- Recycling Programs: Electronic waste processing through certified facilities
- Material Recovery: Silicon and metal reclamation from decommissioned devices
- Disposal Guidelines: Compliance with local electronic waste regulations
Alternative Migration Paths
For new designs requiring environmental compliance:
- Spartan-7 Series: Modern RoHS-compliant alternatives with enhanced performance
- Artix-7 Family: Advanced 28nm technology with superior power efficiency
- Cost-Optimized Solutions: Current-generation FPGAs meeting contemporary environmental standards
The XCS20-4TQ144C represents proven FPGA technology ideal for cost-sensitive applications requiring reliable programmable logic performance. While this device predates current environmental standards, it continues to serve specialized applications where its specific characteristics provide optimal solutions.
