Overview of XC2S50E-6PQ208C FPGA
The XC2S50E-6PQ208C is a high-performance Field-Programmable Gate Array (FPGA) from AMD Xilinx’s Spartan-IIE family, offering exceptional value for embedded systems and digital logic applications. This versatile FPGA delivers 50,000 system gates with 1,728 logic cells, making it ideal for cost-sensitive applications that require reliable programmable logic solutions.
As part of the second-generation ASIC replacement technology, the XC2S50E-6PQ208C provides designers with unlimited in-system reprogrammability, eliminating the high initial costs and lengthy development cycles associated with traditional ASICs. Built on advanced 0.15-micron technology, this FPGA operates at 1.8V, ensuring low power consumption while maintaining robust performance.
Technical Specifications
Core Features
| Specification |
Details |
| Part Number |
XC2S50E-6PQ208C |
| Manufacturer |
AMD (formerly Xilinx) |
| Product Family |
Spartan-IIE |
| System Gates |
50,000 gates |
| Logic Cells |
1,728 cells |
| Configurable Logic Blocks (CLBs) |
384 CLBs |
| Maximum Frequency |
357 MHz |
| Process Technology |
0.15μm (150nm) |
| Operating Voltage |
1.8V |
Package Information
| Parameter |
Specification |
| Package Type |
208-Pin PQFP (Plastic Quad Flat Pack) / HSPQFP EP |
| Pin Count |
208 pins |
| User I/O Pins |
146 I/O |
| Package Dimensions |
QFP-208 |
| Mounting Type |
Surface Mount |
| Operating Temperature |
Commercial (0°C to +70°C) |
Memory Architecture
| Memory Type |
Capacity |
| Distributed RAM |
32,768 bits (16 bits/LUT) |
| Block RAM |
Configurable 4K-bit true dual-port blocks |
| Total Block RAM |
Up to 32 Kbits |
| SelectRAM Hierarchy |
Two-tier memory structure |
Key Features and Benefits
Advanced FPGA Architecture
The XC2S50E-6PQ208C incorporates streamlined features based on the proven Virtex-E FPGA architecture, delivering enterprise-class capabilities at an accessible price point. The device features four Delay-Locked Loops (DLLs) that ensure precise clock management and signal integrity across your design.
Flexible I/O Standards
This Xilinx FPGA supports 19 selectable I/O standards, providing exceptional connectivity options for modern embedded systems. The configurable I/O banks enable seamless interface with various voltage levels and signal types, making integration straightforward across different system architectures.
System-Level Performance
With support for system performance beyond 200 MHz, the XC2S50E-6PQ208C handles demanding digital signal processing tasks efficiently. The fast, predictable interconnect architecture ensures that successive design iterations maintain timing requirements, reducing development time and improving time-to-market.
In-System Reprogrammability
Unlike traditional ASICs, this FPGA offers unlimited in-system reprogrammability, allowing design upgrades in the field without hardware replacement. This capability significantly reduces long-term maintenance costs and enables continuous product improvement throughout the device lifecycle.
Applications and Use Cases
Industrial Automation
The XC2S50E-6PQ208C excels in industrial control systems, motor drives, and process automation applications. Its robust architecture handles real-time control algorithms while the extensive I/O capabilities interface with various sensors and actuators.
Automotive Electronics
Designed for automotive body electronics and lighting control systems, this FPGA meets the demanding requirements of automotive environments. The device manages complex lighting sequences, dashboard controls, and vehicle communication protocols efficiently.
Consumer Electronics and Gaming
In personal electronics and gaming applications, the XC2S50E-6PQ208C provides the processing power needed for graphics rendering, user interface management, and real-time game logic. Its high-speed performance ensures smooth operation in interactive applications.
Communication Systems
The FPGA’s high-frequency operation and flexible I/O make it suitable for communication protocol implementation, signal processing, and data routing in networking equipment and telecommunications devices.
Design and Development
Compatible Development Tools
Engineers can develop designs for the XC2S50E-6PQ208C using:
- ISE Design Suite: Xilinx’s traditional development environment
- Vivado Design Suite: Modern, user-friendly synthesis and implementation platform
- Programming Tools: Support for standard JTAG programming interfaces
- IP Cores: Access to extensive pre-verified IP library
Configuration Options
The device supports multiple configuration modes:
- Master Serial mode
- Slave Serial mode
- JTAG programming
- Boundary-scan testing
- Hot-swap capability for live system updates
Performance Characteristics
Speed Grade Information
The “-6” speed grade designation indicates this device’s timing characteristics and maximum operating frequency. This commercial-grade variant balances performance with cost-effectiveness, suitable for most applications requiring moderate to high-speed operation.
Power Consumption
Operating at 1.8V core voltage, the XC2S50E-6PQ208C delivers excellent power efficiency. The advanced 0.15-micron CMOS process minimizes static power consumption while maintaining high performance, making it suitable for battery-powered and energy-conscious applications.
Package and Pinout
PQFP Package Advantages
The 208-pin Plastic Quad Flat Pack offers:
- Moderate footprint for space-constrained designs
- Good thermal characteristics
- Reliable solder joints for production environments
- Cost-effective manufacturing
- Easy visual inspection during assembly
Pin Configuration
With 146 user-configurable I/O pins, designers have substantial connectivity options. The remaining pins support power distribution, ground connections, and dedicated configuration interfaces, ensuring robust system operation.
Quality and Compliance
Manufacturing Standards
| Compliance |
Status |
| RoHS Compliance |
Check with current supplier |
| Lead-Free Options |
Available with Pb-free packaging |
| REACH Compliance |
Verify with distributor |
| ECCN Code |
EAR99 |
| Lifecycle Status |
End of Life/Obsolete |
Important Note on Availability
The XC2S50E-6PQ208C is classified as obsolete/discontinued according to Xilinx Product Change Notice XCN12026. While existing inventory may be available from authorized distributors and component specialists, designers should consider this when planning new designs. Contact suppliers for current stock availability and recommended alternatives.
Comparison with Related Devices
Spartan-IIE Family Members
| Device |
System Gates |
Logic Cells |
User I/O |
Package Options |
| XC2S50E |
50,000 |
1,728 |
146 |
PQFP208, FT256, TQ144 |
| XC2S100E |
100,000 |
2,700 |
202 |
Multiple packages |
| XC2S150E |
150,000 |
4,320 |
265 |
Multiple packages |
| XC2S200E |
200,000 |
5,292 |
265 |
Multiple packages |
Alternative Package Options
The XC2S50E is also available in:
- FT256: 256-pin Fine-pitch BGA for higher I/O density
- TQ144: 144-pin TQFP for cost-optimized designs
- Various speed grades (-6, -7) for different performance requirements
Purchasing and Availability
Finding Reliable Suppliers
When sourcing the XC2S50E-6PQ208C:
- Verify authorized distributor status
- Request component traceability documentation
- Confirm date codes and storage conditions
- Consider minimum order quantities
- Evaluate lead times for older components
Pricing Considerations
As an obsolete component, pricing may vary significantly based on:
- Available inventory levels
- Market demand for legacy designs
- Supplier relationships
- Order volume
- Component condition (new vs. reclaimed)
Technical Support Resources
Documentation Access
Engineers working with the XC2S50E-6PQ208C can access:
- Complete datasheet (DS077)
- Application notes
- Reference designs
- EDA/CAD symbols and footprints
- Programming guides
- Timing analysis reports
Design Migration Path
For new designs, AMD Xilinx recommends considering current-generation alternatives from the Artix-7 or Spartan-7 families, which offer improved performance, lower power consumption, and continued long-term availability.
Frequently Asked Questions
What makes the XC2S50E-6PQ208C suitable for my application?
This FPGA provides an excellent balance of logic resources, I/O capability, and cost-effectiveness for moderate-complexity digital designs requiring 50K gates or less. Its proven architecture and extensive development tool support simplify implementation.
Can I still purchase the XC2S50E-6PQ208C?
While officially discontinued, stock remains available through authorized distributors and component brokers. For new designs, evaluate current Spartan-7 or Artix-7 alternatives that provide superior performance and guaranteed long-term support.
What development tools support this FPGA?
The ISE Design Suite provides full support for Spartan-IIE FPGAs, including synthesis, implementation, and programming capabilities. The software remains available for legacy design support.
How does this compare to modern FPGAs?
While the XC2S50E-6PQ208C remains functional for existing applications, modern alternatives offer significantly higher logic density, faster performance, lower power consumption, and enhanced features at comparable or lower costs.
Conclusion
The XC2S50E-6PQ208C represents proven FPGA technology suitable for numerous embedded applications. While classified as obsolete, its robust architecture and extensive installed base make it relevant for replacement, repair, and legacy system maintenance. Engineers working with this device benefit from comprehensive documentation, mature development tools, and established design practices. For new projects, consider evaluating current-generation alternatives while leveraging the extensive knowledge base surrounding the Spartan-IIE family.
