Overview of XCS20-4PQ208C FPGA
The XCS20-4PQ208C is a powerful Field Programmable Gate Array (FPGA) from AMD (formerly Xilinx), designed specifically for high-volume production environments. This Spartan family FPGA delivers exceptional performance for ASIC replacement applications, offering a cost-effective solution without compromising on functionality or reliability.
As part of the renowned Spartan series, the XCS20-4PQ208C represents a perfect balance between performance, features, and affordability, making it an ideal choice for engineers and designers working on complex digital logic implementations.
Key Technical Specifications
Core Features
| Specification |
Value |
| Logic Gates |
20,000 gates |
| Logic Cells |
950 cells |
| I/O Pins |
160 |
| Total RAM Bits |
12,800 bits |
| Operating Frequency |
166 MHz |
| Supply Voltage |
5V (4.75V – 5.25V) |
Package Details
| Parameter |
Specification |
| Package Type |
208-BFQFP (Plastic Quad Flat Pack) |
| Pin Count |
208 pins |
| Package Dimensions |
28mm × 28mm |
| Mounting Type |
Surface Mount |
| Operating Temperature |
0°C to +85°C (Commercial) |
Advanced FPGA Architecture
| Component |
Specification |
| CLBs (Configurable Logic Blocks) |
400 blocks |
| RAM Size |
1.6 kB |
| Speed Grade |
-4 (166 MHz) |
| Technology |
CMOS 5V |
Product Applications and Use Cases
The XCS20-4PQ208C FPGA excels in various demanding applications:
Industrial Applications
- Factory automation systems
- Process control equipment
- Industrial monitoring devices
- PLC replacement solutions
Communications Equipment
- Wireless infrastructure
- Network routing equipment
- Protocol conversion devices
- Data transmission systems
Commercial Electronics
- Point of Sale (POS) terminals
- Electronic payment systems
- Embedded control systems
- Custom computing solutions
Consumer Electronics
- Personal computers and notebooks
- Handheld devices
- Gaming peripherals
- Smart home devices
Why Choose XCS20-4PQ208C?
Cost-Effective ASIC Replacement
The XCS20-4PQ208C provides a compelling alternative to traditional ASICs, delivering comparable performance while eliminating the high initial costs and long development cycles associated with custom chip design. This makes it perfect for high-volume production where flexibility and time-to-market are critical.
High-Volume Production Ready
Optimized for mass production environments, this FPGA maintains consistent quality and performance across large manufacturing runs, ensuring reliability in commercial and industrial deployments.
Flexible Configuration Options
With 20,000 gates and 950 logic cells, designers have substantial resources for implementing complex digital logic, signal processing algorithms, and custom interfaces.
Industry-Standard Support
The XCS20-4PQ208C features IEEE 1149.1/1532 JTAG boundary-scan support, enabling efficient programming, prototyping, and in-system testing capabilities.
Design and Development Features
Programming Capabilities
- In-System Programmable (ISP) architecture
- JTAG-compliant programming interface
- Support for Xilinx development tools
- Compatible with ISE Design Suite
On-Chip Resources
- Integrated RAM blocks for data buffering
- Flexible I/O configuration
- Built-in clock management
- Versatile routing architecture
Development Tool Support
Engineers can leverage powerful Xilinx FPGA development tools including the ISE Design Suite for efficient design, synthesis, and implementation workflows.
Performance Characteristics
Speed and Timing
Operating at 166 MHz, the XCS20-4PQ208C delivers robust performance for time-critical applications. The -4 speed grade ensures reliable operation even in demanding real-time processing scenarios.
Power Efficiency
With a standard 5V supply voltage, this FPGA integrates seamlessly into existing 5V logic systems, reducing the need for level shifters and simplifying board design.
Thermal Management
The commercial temperature range (0°C to +85°C) makes the XCS20-4PQ208C suitable for most indoor and controlled-environment applications.
Package and Mounting Information
The 208-pin BFQFP package provides excellent signal integrity while maintaining a compact footprint. The surface-mount design facilitates automated assembly processes, reducing manufacturing costs and improving production efficiency.
PCB Design Considerations
- Pin pitch: Standard for automated assembly
- Thermal pad: Available for enhanced heat dissipation
- Footprint: Compatible with standard PCB layout tools
- RoHS status: Varies by production batch
Product Lifecycle and Availability
Important Note: The XCS20-4PQ208C is currently listed as a discontinued/obsolete product by AMD/Xilinx. While some distributors may still have inventory available, designers should consider this when planning new projects.
Recommended Alternatives
For new designs, consider exploring newer Spartan family members or equivalent FPGAs that offer enhanced features, lower power consumption, and guaranteed long-term availability.
Ordering and Support Information
Part Number Details
- Full Part Number: XCS20-4PQ208C
- Series: Spartan
- Manufacturer: AMD (Xilinx)
- Category: Embedded – FPGAs (Field Programmable Gate Array)
Documentation Resources
- Technical datasheet available from AMD/Xilinx
- Application notes for Spartan family
- Reference designs and example projects
- Community support through technical forums
Comparison with Related Products
| Feature |
XCS20-4PQ208C |
XCS20-3PQ208C |
XCS20XL-4PQ208C |
| Speed Grade |
-4 (166 MHz) |
-3 (125 MHz) |
-4 (166 MHz) |
| Series |
Spartan |
Spartan |
Spartan-XL |
| Gates |
20K |
20K |
20K |
| Supply Voltage |
5V |
5V |
3.3V |
Quality and Compliance
Standards Compliance
- RoHS: Status varies by manufacturing batch
- REACH: Compliance documented
- ECCN: EAR99
- Moisture Sensitivity: MSL 3 (168 hours)
Manufacturing Quality
AMD/Xilinx maintains strict quality control standards throughout the manufacturing process, ensuring consistent performance and reliability across all production batches.
Frequently Asked Questions
Q: Is the XCS20-4PQ208C still in production? A: This device is currently discontinued, though some distributors maintain inventory. For new designs, consult with AMD/Xilinx for recommended alternatives.
Q: What development tools support the XCS20-4PQ208C? A: The Xilinx ISE Design Suite provides comprehensive support for design, synthesis, and programming of this FPGA.
Q: Can this FPGA operate at 3.3V? A: No, the XCS20-4PQ208C requires a 5V supply. For 3.3V operation, consider the Spartan-XL family (XCS20XL variants).
Q: What is the maximum operating frequency? A: The -4 speed grade supports operation up to 166 MHz, though actual achievable frequency depends on design complexity and routing.
Conclusion
The XCS20-4PQ208C represents a proven FPGA solution from the trusted Spartan family, delivering 20,000 gates of programmable logic in a compact 208-pin package. While now discontinued, its legacy in industrial, communications, and commercial applications demonstrates the robust design and reliable performance that made it popular for high-volume production.
Engineers working with existing designs can find support through Xilinx FPGA resources, while those starting new projects should explore current-generation alternatives that build upon the solid foundation established by devices like the XCS20-4PQ208C.
For technical specifications, programming guidance, and design resources, consult the official AMD/Xilinx documentation and engage with the active FPGA development community.
