Product Overview
The XC4028EX-3HQG208C is a high-performance Field Programmable Gate Array (FPGA) from Xilinx’s proven XC4000E family. This versatile SRAM-based reprogrammable device delivers exceptional flexibility for complex digital design applications while maintaining cost-effectiveness. The XC4028EX-3HQG208C features the innovative VersaBlock logic module and VersaRing I/O interface, making it an ideal solution for demanding programmable logic applications.
1. Product Specifications
Core Technical Specifications
Part Number: XC4028EX-3HQG208C
Manufacturer: Xilinx Inc.
Product Family: FPGA XC4000E Family
Technology: 0.35ฮผm three-layer metal CMOS process
Supply Voltage: 5V
Package Type: 208-Pin HSPQFP EP (Heat Sink Quad Flat Pack Extended Pad)
Operating Temperature Range: Commercial (0ยฐC to +85ยฐC)
Performance Characteristics
- Logic Capacity: 28,000 gates equivalent
- Logic Cells: 2,432 configurable logic blocks
- Speed Grade: -3 (standard performance)
- Maximum System Clock: Up to 80 MHz synchronous operation
- Internal Performance: Exceeds 150 MHz for critical paths
- I/O Pins: Up to 208 user-configurable I/O signals
Key Features
- SRAM-Based Architecture: Fully reprogrammable, register/latch rich design
- VersaBlock Logic Modules: Enhanced design flexibility and routing efficiency
- VersaRing I/O Interface: High logic cell to I/O ratio with programmable characteristics
- Zero Hold Time: Input registers with zero flip-flop hold time for simplified system timing
- Programmable Slew Rate Control: Optimizes performance while reducing electrical noise
- Select-RAM Memory: On-chip memory with edge-triggered and dual-port modes
Software Compatibility
The XC4028EX-3HQG208C is fully supported by Xilinx development tools:
- Design Entry: ABEL, Schematic Capture, VHDL, Verilog HDL synthesis
- Development Environment: ISE Design Suite (legacy support)
- Platform Support: Windows and Unix workstations, PC platforms
- Third-Party Tools: Compatible with popular logic synthesis tools
2. Pricing Information
The XC4028EX-3HQG208C is available through authorized Xilinx distributors and electronic component suppliers. Due to the legacy nature of this product and fluctuating market conditions, pricing varies based on:
- Quantity Requirements: Volume discounts available for large orders
- Market Availability: Limited stock due to obsolete status
- Distributor Network: Pricing varies among authorized distributors
- Lead Times: Availability dependent on existing inventory
Note: This device is marked as obsolete by Xilinx and is NOT RECOMMENDED for new designs. Customers should consider newer FPGA families for current projects.
For current pricing and availability, contact authorized distributors or submit a quote request through electronic component distributors.
3. Documents & Media
Technical Documentation
- Official Datasheet: XC4000E and XC4000X Series FPGAs Complete Product Specification
- User Guide: XC4000E Series Configuration and Programming Guide
- Application Notes: Design considerations and implementation guidelines
- Package Information: 208-pin HSPQFP mechanical drawings and thermal characteristics
Development Resources
- Reference Designs: Sample implementations and design examples
- Design Flows: Step-by-step implementation guides
- Timing Models: Detailed timing analysis files
- Pinout Information: Complete pin assignment documentation
Software Downloads
- Legacy ISE Tools: Development environment for XC4000E family
- Programming Utilities: Device configuration and bitstream generation tools
- Simulation Models: VHDL and Verilog simulation libraries
4. Related Resources
Compatible Development Boards
While specific development boards for the XC4028EX-3HQG208C are limited due to its obsolete status, engineers often reference:
- Generic FPGA Evaluation Platforms: Custom board designs
- Legacy Development Kits: XC4000E family starter kits (when available)
- Third-Party Solutions: University and research institution boards
Alternative Solutions
Recommended Modern Replacements:
- Spartan-7 Series: Cost-effective alternative with enhanced performance
- Artix-7 Series: Higher performance with lower power consumption
- Zynq-7000 Series: ARM processor integration for system-on-chip applications
Technical Support Resources
- Xilinx Answer Database: Legacy support documentation
- Community Forums: User-generated content and troubleshooting
- Application Engineering: Limited support for legacy products
- Third-Party Expertise: Specialized consultants familiar with XC4000E family
5. Environmental & Export Classifications
Environmental Compliance
RoHS Status: Compliant with Restriction of Hazardous Substances directive
Lead-Free: Available in lead-free package options
Environmental Classification: Commercial grade (0ยฐC to +85ยฐC)
Moisture Sensitivity Level: MSL 3 (168 hours at 30ยฐC/60% RH)
Storage Temperature: -65ยฐC to +150ยฐC ambient
Export Control Information
ECCN (Export Control Classification Number): Subject to U.S. Export Administration Regulations
Country of Origin: Manufactured in various locations under Xilinx quality standards
Export Restrictions: May require export license for certain countries/applications
ITAR Status: Not subject to International Traffic in Arms Regulations
Quality Standards
- Manufacturing Standards: ISO 9001 certified facilities
- Quality Grade: Commercial/Industrial grade components
- Reliability Testing: Standard commercial reliability protocols
- Package Marking: Date codes and traceability information included
Packaging Information
Standard Packaging: Anti-static tubes or tape and reel
Tube Quantity: Typically 18-25 pieces per tube
Tape and Reel: Available for automated assembly (MOQ applies)
Custom Packaging: Available upon request for volume orders
The XC4028EX-3HQG208C represents proven FPGA technology from Xilinx’s extensive legacy portfolio. While obsolete for new designs, this device continues to serve existing applications requiring maintenance and lifecycle support. For new projects, consider Xilinx’s current-generation FPGA families for enhanced performance, lower power consumption, and long-term availability.
