Overview of XCS05-3VQ100C FPGA
The XCS05-3VQ100C is a high-performance Field Programmable Gate Array (FPGA) from AMD Xilinx’s renowned Spartan family. This versatile programmable logic device delivers robust ASIC replacement capabilities with 5,000 system gates, making it an ideal solution for industrial automation, enterprise systems, and embedded applications. Originally manufactured by Xilinx (now AMD), this FPGA combines flexibility with cost-effectiveness for high-volume production environments.
Key Technical Specifications
| Specification |
Details |
| Part Number |
XCS05-3VQ100C |
| Manufacturer |
AMD (Xilinx) |
| Family |
Spartan |
| Logic Cells |
238 Cells |
| System Gates |
5,000 Gates |
| User I/O |
77 |
| Operating Voltage |
5V (4.75V – 5.25V) |
| Maximum Frequency |
125 MHz |
| RAM Bits |
3,200 bits |
| Distributed Flip-Flops |
360 |
| Package Type |
100-Pin VQFP (Very Thin Quad Flat Pack) |
| Speed Grade |
-3 |
| Temperature Range |
Commercial (0°C to +70°C) |
Architecture and Design Features
Configurable Logic Blocks (CLBs)
The XCS05-3VQ100C features a 10×10 array of Configurable Logic Blocks, providing exceptional design flexibility. Each CLB contains programmable logic elements that enable complex digital circuit implementations, supporting diverse application requirements from simple control logic to sophisticated signal processing.
On-Chip Memory Resources
| Memory Feature |
Specification |
| SelectRAM |
Available |
| Total RAM Bits |
3,200 bits |
| Distributed RAM |
Configurable within CLBs |
| RAM Configuration |
Flexible dual-port options |
I/O Capabilities
With 77 user I/O pins, the XCS05-3VQ100C provides extensive connectivity options for interfacing with external components and systems. The VQFP-100 package ensures optimal pin accessibility while maintaining a compact footprint suitable for space-constrained PCB designs.
Performance Characteristics
Speed and Timing Specifications
| Parameter |
Value |
| Maximum System Frequency |
125 MHz |
| Speed Grade |
-3 (Standard Performance) |
| Logic Delay |
Optimized for standard applications |
| Clock Distribution |
Low-skew global routing |
Power Requirements
- Supply Voltage: 5V nominal (4.75V – 5.25V tolerance)
- Power Consumption: Varies based on design utilization
- I/O Standards: 5V CMOS/TTL compatible
Application Areas
The XCS05-3VQ100C excels in numerous industrial and commercial applications:
Industrial Automation
- Building automation systems requiring programmable control logic
- Motor drive controllers with custom timing requirements
- Industrial sensor interfaces and data acquisition systems
- Process control and monitoring equipment
Enterprise and Data Systems
- Network interface controllers for enterprise systems
- Protocol conversion and data routing applications
- Custom peripheral controllers for server environments
- Legacy system integration solutions
Consumer Electronics
- Personal electronics with embedded control requirements
- Tablet interface controllers and display management
- Portable device power management systems
- Audio/video processing units
Design and Development Support
Programming and Configuration
The XCS05-3VQ100C supports multiple configuration methods:
- JTAG boundary-scan programming (IEEE 1149.1 compatible)
- Serial and parallel configuration modes
- In-system programmability for field updates
- Full readback capability for design verification
Development Tools
Engineers working with this Xilinx FPGA can leverage industry-standard design tools including Xilinx ISE Design Suite and compatible synthesis tools for optimal design implementation.
Package Information
VQFP-100 Package Details
| Package Attribute |
Specification |
| Package Type |
Very Thin Quad Flat Pack (VQFP) |
| Pin Count |
100 pins |
| Body Size |
Compact footprint |
| Lead Pitch |
Fine pitch for high-density boards |
| Mounting |
Surface mount technology (SMT) |
| RoHS Compliance |
Lead-free compliant |
Comparison with Spartan Family Members
| Device |
System Gates |
Logic Cells |
User I/O |
RAM Bits |
CLB Array |
| XCS05 |
5,000 |
238 |
77 |
3,200 |
10 x 10 |
| XCS10 |
10,000 |
466 |
112 |
6,272 |
14 x 14 |
| XCS20 |
20,000 |
950 |
160 |
12,800 |
20 x 20 |
| XCS30 |
30,000 |
1,368 |
192 |
18,432 |
24 x 24 |
| XCS40 |
40,000 |
1,862 |
205 |
25,088 |
28 x 28 |
Advantages for ASIC Replacement
The XCS05-3VQ100C provides compelling benefits as an ASIC alternative:
Cost-Effectiveness
- Eliminates NRE costs associated with mask-programmed ASICs
- Reduces development time through rapid prototyping
- Enables design iterations without manufacturing delays
- Volume pricing competitive with traditional ASIC solutions
Flexibility and Reliability
- Field-upgradeable firmware for product improvements
- Proven technology from industry-leading Xilinx/AMD
- Extensive IP core library availability
- Long-term product availability for critical applications
Technical Considerations
Design Best Practices
When implementing designs with the XCS05-3VQ100C:
- Clock Management: Utilize global clock networks for optimal timing performance
- Resource Planning: Plan CLB and I/O utilization during architecture phase
- Timing Closure: Implement proper timing constraints for reliable operation
- Power Distribution: Design robust PCB power delivery for stable 5V supply
- Thermal Management: Consider heat dissipation in high-utilization designs
Compatibility Notes
- Legacy 5V Logic: Direct compatibility with 5V CMOS and TTL logic families
- Mixed Voltage Systems: Requires level translation for 3.3V interfacing
- PCB Layout: Follow Xilinx PCB design guidelines for signal integrity
Product Status and Availability
Important Note: The XCS05-3VQ100C is currently marked as obsolete by the manufacturer. While existing inventory remains available through authorized distributors, designers should consider:
- Alternative devices from current Xilinx/AMD product lines
- Last-time buy opportunities for long-term production
- Migration strategies to newer FPGA families
- Lifecycle management for existing deployments
Ordering Information
Part Number Breakdown
XCS05-3VQ100C decodes as:
- XCS: Spartan FPGA family identifier
- 05: 5,000 system gates
- 3: Speed grade (-3 standard performance)
- VQ: VQFP package type
- 100: Pin count
- C: Commercial temperature range
Package Marking
Standard package marking includes manufacturer logo, part number, date code, and lot traceability information for quality assurance and supply chain management.
Quality and Compliance
Certifications and Standards
| Standard |
Compliance |
| RoHS |
Lead-free compliant |
| REACH |
Compliant |
| PCI Compliance |
Fully compatible |
| ISO Standards |
Manufactured to ISO quality standards |
Testing and Reliability
All XCS05-3VQ100C devices undergo rigorous factory testing including:
- Functional verification at operating conditions
- Parametric testing for electrical specifications
- Programming reliability validation
- Package integrity inspection
Frequently Asked Questions
What makes the XCS05-3VQ100C suitable for industrial applications?
The combination of 5V operation, robust I/O capabilities, and proven reliability makes this FPGA ideal for harsh industrial environments where interface compatibility with legacy equipment is essential.
How does the XCS05-3VQ100C compare to modern FPGAs?
While newer devices offer lower power consumption and higher density, the XCS05-3VQ100C provides excellent 5V logic compatibility and cost-effectiveness for applications not requiring cutting-edge performance.
What development tools are recommended?
Xilinx ISE Design Suite supports the Spartan family. Third-party synthesis tools compatible with Xilinx devices can also be utilized for design entry and optimization.
Is technical support available?
AMD (Xilinx) provides comprehensive documentation, application notes, and community forums. Third-party design service providers also offer expertise in Spartan FPGA implementation.
Conclusion
The XCS05-3VQ100C represents a proven FPGA solution for applications requiring programmable logic with 5V compatibility. With 238 logic cells, 77 I/O pins, and comprehensive development tool support, this device continues to serve designers in industrial automation, enterprise systems, and embedded control applications. While newer alternatives exist, the XCS05-3VQ100C offers compelling advantages for legacy system integration and cost-sensitive projects where 5,000 gates of programmable logic provide adequate design capacity.
For current availability, specifications, and technical documentation, consult authorized AMD (Xilinx) distributors and reference the official datasheet for detailed electrical and timing characteristics.
