Overview of XC7A35T-1CSG325I FPGA
The XC7A35T-1CSG325I is a powerful Field Programmable Gate Array (FPGA) from AMD’s Xilinx Artix-7 family, designed to deliver exceptional performance for cost-sensitive, high-volume applications. This industrial-grade FPGA combines advanced logic capacity with energy-efficient operation, making it ideal for embedded systems, industrial automation, telecommunications, and consumer electronics.
Built on cutting-edge 28nm High-K Metal Gate (HKMG) process technology, the XC7A35T-1CSG325I offers designers a flexible, programmable solution that bridges the gap between standard ASICs and fully customizable logic devices. Whether you’re developing prototypes or deploying production systems, this Xilinx FPGA provides the versatility and reliability your project demands.
Key Technical Specifications
Core Architecture Features
| Specification |
Value |
Description |
| Logic Cells |
33,280 |
High-density programmable logic elements |
| CLBs (Configurable Logic Blocks) |
2,600 |
Fundamental building blocks for logic implementation |
| Total RAM Bits |
1,843,200 (1.8 Mb) |
Block RAM for data buffering and storage |
| Block RAM |
36 Kb dual-port |
Built-in FIFO logic for efficient data handling |
| DSP Slices |
90 |
Dedicated digital signal processing blocks |
| I/O Pins |
150 user I/O |
Configurable input/output connections |
| Process Technology |
28nm HKMG |
High-performance, low-power fabrication |
Package and Physical Characteristics
| Attribute |
Specification |
| Package Type |
324-LFBGA, CSPBGA |
| Package Code |
CSG325 |
| Total Pins |
324 |
| Package Dimensions |
15mm x 15mm |
| Mounting Type |
Surface Mount |
| Pitch |
1.0mm |
| Terminal Material |
Tin/Silver/Copper (Sn96.5Ag3.0Cu0.5) |
| Height |
1.5mm maximum |
Electrical Specifications
| Parameter |
Min |
Typical |
Max |
Unit |
| Supply Voltage (Core) |
0.95 |
1.0 |
1.05 |
V |
| Operating Temperature |
-40 |
– |
100 |
°C (TJ) |
| Speed Grade |
-1 |
– |
– |
– |
| Maximum Toggle Rate |
– |
464.25 |
– |
MHz |
| Propagation Delay |
– |
850 |
– |
ps |
Advanced Features and Capabilities
High-Performance Logic Architecture
The XC7A35T-1CSG325I leverages real 6-input Look-Up Table (LUT) technology, which can be configured as distributed memory for maximum flexibility. This architecture enables:
- Complex combinational logic implementation
- Efficient resource utilization
- Reduced power consumption compared to previous generations
- Faster design compilation and optimization
Memory Subsystem
The integrated memory architecture includes:
- 36 Kb dual-port block RAM with configurable depth and width
- Built-in FIFO controllers for seamless data streaming
- Distributed RAM using LUTs for small, fast memory structures
- Support for various memory configurations: single-port, dual-port, and simple dual-port
High-Speed Connectivity
| Interface Type |
Performance |
Details |
| SelectIO Technology |
DDR3 support up to 1,866 Mb/s |
High-performance I/O standards |
| Serial Transceivers |
600 Mb/s to 6.6 Gb/s |
Multi-gigabit connectivity |
| Total Serial Bandwidth |
Up to 211 Gb/s |
Aggregate transceiver throughput |
| PCIe Support |
Gen2 x4 |
Integrated PCIe endpoint/root port |
| Memory Interface |
1,066 Mb/s |
DDR3 memory controller support |
Integrated Analog Capabilities
The XC7A35T-1CSG325I includes an XADC (Xilinx Analog-to-Digital Converter) module featuring:
- Dual 12-bit 1 MSPS ADCs
- On-chip thermal monitoring
- Supply voltage sensing
- External analog input channels
- Continuous monitoring for system health
Application Areas and Use Cases
Industrial Automation
The XC7A35T-1CSG325I excels in industrial control applications:
- Motor control systems
- Programmable logic controllers (PLCs)
- Machine vision processing
- Industrial communication protocols
- Real-time monitoring and data acquisition
Communications Infrastructure
Telecommunications applications benefit from:
- Protocol bridging and conversion
- Software-defined radio (SDR) implementations
- Network packet processing
- Baseband signal processing
- Wireless communication systems
Consumer Electronics
Perfect for consumer products requiring:
- Video processing and display control
- Audio signal processing
- Camera interface and image processing
- Gaming consoles and entertainment systems
- Smart home automation
Embedded Systems Development
Development boards and prototyping:
- Compatible with popular development platforms (Basys 3, Arty S7, Nexys boards)
- Educational FPGA learning systems
- Rapid prototyping platforms
- Custom embedded controller designs
Design Support and Development Tools
Vivado Design Suite
AMD Xilinx provides comprehensive development support through the Vivado Design Suite, which includes:
- Intuitive synthesis and implementation workflow
- Advanced timing analysis tools
- Integrated IP catalog with pre-verified cores
- Simulation and verification environments
- Hardware debugging capabilities with ChipScope/ILA
Programming and Configuration
| Feature |
Description |
| Configuration Memory |
External serial flash or parallel PROM |
| Configuration Time |
Milliseconds for rapid system boot |
| Partial Reconfiguration |
Supported for dynamic functionality |
| Bitstream Encryption |
AES-256 for IP protection |
| Authentication |
RSA-2048 for secure boot |
Performance and Power Optimization
Low-Power Operation
The 28nm HKMG process technology enables:
- 50% lower power consumption compared to previous 45nm devices
- Multiple power domains for fine-grained control
- Clock gating for unused logic
- Intelligent power management features
- Extended temperature range for harsh environments (-40°C to +100°C)
Speed Grades and Performance
The “-1” speed grade indicates:
- Standard performance tier
- Balanced power and speed characteristics
- Suitable for most general-purpose applications
- Competitive timing performance for cost-sensitive designs
Package Information and PCB Design
CSPBGA Package Advantages
| Benefit |
Description |
| Compact Footprint |
15mm x 15mm saves board space |
| Excellent Thermal Performance |
Direct die-to-board heat transfer |
| High I/O Density |
324 balls for maximum connectivity |
| Signal Integrity |
Short bond wire paths reduce noise |
| Cost-Effective |
Standard BGA manufacturing compatibility |
PCB Layout Recommendations
When designing with the XC7A35T-1CSG325I:
- Use controlled impedance traces for high-speed signals
- Implement proper power distribution with dedicated planes
- Follow AMD’s PCB design guidelines for decoupling capacitors
- Consider thermal management with proper copper pours
- Route differential pairs with matched lengths
- Maintain adequate clearances per IPC standards
Comparison with Related Devices
Artix-7 Family Positioning
| Device |
Logic Cells |
Block RAM |
DSP Slices |
I/O |
Application Focus |
| XC7A15T |
16,640 |
900 Kb |
45 |
106 |
Ultra-low-cost designs |
| XC7A35T |
33,280 |
1.8 Mb |
90 |
150 |
Mainstream applications |
| XC7A50T |
52,160 |
2.7 Mb |
120 |
210 |
Higher logic density |
| XC7A100T |
101,440 |
4.9 Mb |
240 |
300 |
Complex designs |
Quality and Reliability
Industrial Temperature Rating
The “I” suffix indicates industrial temperature grade:
- Junction temperature range: -40°C to +100°C
- Suitable for harsh environmental conditions
- Extended reliability for mission-critical applications
- Automotive and aerospace compatibility
Manufacturing Quality
AMD maintains rigorous quality standards:
- ISO 9001 certified manufacturing
- Automotive-grade quality (AEC-Q100 qualified variants available)
- RoHS compliant materials
- Conflict-free sourcing
- Comprehensive testing and screening
Supply Chain and Availability
Authorized Distribution
The XC7A35T-1CSG325I is available through:
- Global authorized distributors (Digi-Key, Mouser, Newark, Arrow)
- Regional electronics suppliers
- Direct from AMD for volume orders
- Contract manufacturers for turnkey solutions
Packaging Options
| Package Quantity |
Packaging Type |
Order Code |
| 1-9 pieces |
Tube/Tray |
Standard MOQ |
| 10+ pieces |
Tube/Tray |
Volume pricing |
| 126+ pieces |
Tray |
Production quantities |
| Custom |
Reel |
Available on request |
Getting Started
Quick Start Guide
- Obtain Development Board: Consider Digilent Arty S7 or Basys 3 boards featuring the XC7A35T
- Download Vivado: Install AMD Vivado Design Suite (free WebPACK edition available)
- Review Documentation: Study the Artix-7 datasheet and user guides
- Start Simple: Begin with LED blinker or UART examples
- Leverage IP Cores: Use pre-built IP from Vivado catalog
- Optimize Design: Apply timing constraints and power optimization
Learning Resources
- AMD Technical Documentation Portal
- Xilinx Community Forums
- Online video tutorials and courses
- University program educational materials
- Reference designs and application notes
Technical Support
Documentation Access
Comprehensive technical resources include:
- Product datasheet (DS181)
- User guides and application notes
- Packaging and pinout specifications
- PCB design guidelines
- Thermal management recommendations
Design Assistance
AMD provides multiple support channels:
- Online community forums
- Technical support cases
- FAE (Field Application Engineer) assistance
- Training webinars and workshops
- Partner ecosystem for design services
Conclusion
The XC7A35T-1CSG325I represents an excellent choice for engineers seeking a balance between performance, cost, and flexibility in FPGA design. With 33,280 logic cells, robust I/O capabilities, and industrial-grade reliability, this device serves diverse applications from embedded control to communications infrastructure.
Its 28nm process technology delivers power efficiency while the comprehensive Vivado tool suite ensures productive development cycles. Whether you’re prototyping new concepts or deploying production systems, the XC7A35T-1CSG325I provides the programmable logic platform to bring your innovations to market.
For more information about AMD Xilinx FPGA solutions and to explore the complete Artix-7 family, visit our comprehensive Xilinx FPGA resource center.
