The XC2C64A-5VQG44C is a high-performance Complex Programmable Logic Device (CPLD) from AMD’s CoolRunner-II family, designed to deliver exceptional low-power operation combined with high-speed performance. This 64-macrocell CPLD represents the perfect balance between functionality and efficiency for modern embedded systems and digital design applications.
Key Features of XC2C64A-5VQG44C
The XC2C64A-5VQG44C stands out in the programmable logic market with its impressive feature set:
- Ultra-Low Power Consumption: Only 28.8µW typical power consumption
- High-Speed Operation: 263MHz system clock frequency
- Compact 44-Pin VTQFP Package: 10mm x 10mm footprint for space-constrained designs
- 1.8V Core Voltage: Energy-efficient operation for battery-powered applications
- In-System Programmable: Field-upgradeable without device removal
- Zero-Power Design: Industry-leading standby current of just 16µA
Technical Specifications
Electrical Characteristics
| Parameter |
Specification |
Unit |
| Macro Cells |
64 |
– |
| Usable Gates |
1,500 |
Gates |
| Maximum Frequency |
263 |
MHz |
| Core Voltage |
1.8 |
V |
| I/O Voltage Range |
1.5 – 3.3 |
V |
| Technology Node |
0.18 |
µm CMOS |
| Typical Power |
28.8 |
µW |
| Standby Current |
16 |
µA |
Package Information
| Specification |
Details |
| Package Type |
Very Thin Quad Flat Pack (VTQFP) |
| Pin Count |
44 |
| Pitch |
0.8 mm |
| Body Size |
10mm × 10mm |
| Height |
8.2 mm |
| Lead Width |
46.6 mm |
| Temperature Grade |
Commercial (0°C to +70°C) |
| RoHS Compliant |
Yes (Pb-free) |
Architecture and Design
Advanced Interconnect Matrix (AIM)
The XC2C64A-5VQG44C features AMD’s proprietary Advanced Interconnect Matrix, which provides optimal signal routing between function blocks. This architecture ensures:
- Low propagation delays (4.6-6.7ns single p-term)
- Efficient resource utilization
- Reduced power consumption during signal switching
- Flexible interconnection capabilities
Function Block Configuration
Internal Organization
The device consists of 8 Function Blocks, each containing:
- 40 × 56 product-term PLA array
- 16 programmable macrocells
- Configurable combinational or registered operation modes
- Individual power-up state control (zero or one)
Clock Management System
The XC2C64A-5VQG44C includes sophisticated clocking capabilities:
- 3 Global Clock Networks: Available to all function blocks
- CoolCLOCK Technology: Reduces dynamic power consumption
- Local Clock Options: Per-macrocell clock control
- Synchronous Clock Enable: Flexible timing control
Programming and Development
In-System Programmability
The XC2C64A-5VQG44C supports complete in-system programming through industry-standard JTAG interface:
JTAG Features
| Feature |
Description |
| IEEE 1149.1 Support |
Boundary-scan testing capability |
| IEEE 1532 Support |
In-system configuration standard |
| JTAG Programming |
Device configuration without removal |
| Boundary-scan Testing |
Manufacturing test support |
Design Tools Compatibility
The XC2C64A-5VQG44C integrates seamlessly with professional development environments:
- Xilinx ISE Design Suite: Legacy support for existing projects
- Vivado Design Suite: Modern design flow compatibility
- Third-Party Tools: Standard VHDL/Verilog synthesis tool support
For comprehensive Xilinx FPGA development resources and related programmable logic solutions, including additional CoolRunner-II family members, visit specialized FPGA platforms.
Application Areas
Industrial Control Systems
The XC2C64A-5VQG44C excels in industrial automation applications:
- PLC control logic
- Motor control interfaces
- Sensor signal processing
- Industrial communication protocols
Portable Electronics
Ultra-low power characteristics make this CPLD ideal for:
- Battery-powered instrumentation
- Handheld medical devices
- Portable test equipment
- Wearable technology
Communication Equipment
High-speed performance enables:
- Protocol conversion
- Data multiplexing/demultiplexing
- Interface bridging
- Packet processing
Consumer Electronics
Cost-effective solutions for:
- Display controllers
- User interface logic
- Power management
- System control functions
I/O Standards and Compatibility
Supported I/O Standards
The XC2C64A-5VQG44C supports multiple JEDEC I/O standards:
| Standard |
Voltage |
Application |
| LVCMOS 1.5V |
1.5V |
Ultra-low power systems |
| LVCMOS 1.8V |
1.8V |
Modern digital interfaces |
| LVCMOS 2.5V |
2.5V |
Legacy system compatibility |
| LVCMOS 3.3V |
3.3V |
Standard logic levels |
Mixed-Voltage Interface Capability
Each I/O bank can operate at different voltages, enabling:
- Voltage translation between system components
- Direct interfacing with mixed-voltage systems
- Reduced external component count
- Simplified board design
Performance Specifications
Timing Characteristics
Propagation Delays
| Parameter |
Min |
Max |
Unit |
| Single P-term Delay |
– |
6.7 |
ns |
| Pin-to-Pin Delay |
– |
8.5 |
ns |
| Setup Time |
2.0 |
– |
ns |
| Hold Time |
0.0 |
– |
ns |
| Clock-to-Out |
– |
5.0 |
ns |
Power Consumption Analysis
Static Power
- Standby Mode: 16µA typical (28.8µW at 1.8V)
- Zero-Power Hold: Maintains configuration without active power
Dynamic Power
Power consumption scales with:
- Toggle frequency
- Number of active macrocells
- I/O switching activity
- Clock frequency
Design Considerations
PCB Layout Guidelines
Pin Assignment Recommendations
- Power Supply Decoupling: Place 0.1µF capacitors near each VCC pin
- Ground Strategy: Use solid ground plane for optimal signal integrity
- JTAG Interface: Keep programming traces short and impedance-controlled
- Clock Distribution: Route clock signals with matched impedance
Thermal Management
The XC2C64A-5VQG44C features excellent thermal characteristics:
- Junction Temperature: 0°C to +70°C (commercial grade)
- Thermal Resistance: θJA = 33°C/W (still air)
- Power Dissipation: Minimal heat generation in typical applications
Reliability and Quality
Manufacturing Quality Standards
- Lead-Free (RoHS): Compliant with environmental regulations
- Moisture Sensitivity: Level 3 per J-STD-020
- ESD Protection: All pins protected per industry standards
Longevity and Lifecycle
AMD ensures long-term availability and support:
- Extended product lifecycle management
- Migration paths to newer devices
- Comprehensive documentation and errata updates
Ordering Information
Part Number Breakdown
XC2C64A-5VQG44C decodes as:
- XC2C64A: Device family and macrocell count
- 5: Speed grade (5ns performance)
- VQG: Package type (Very Thin Quad Flat, Green/RoHS)
- 44: Pin count
- C: Commercial temperature range
Package Marking
Due to limited space on the package, abbreviated markings are used:
- Device family indicator
- Speed grade
- Date code
- Manufacturing lot code
Comparison with Alternative Devices
XC2C64A Family Variants
| Part Number |
Package |
Pins |
Size |
Application Focus |
| XC2C64A-5VQG44C |
VTQFP |
44 |
10×10mm |
General purpose |
| XC2C64A-5QFG48C |
QFN |
48 |
7×7mm |
Space-constrained |
| XC2C64A-5VQG100C |
VTQFP |
100 |
Larger |
High I/O count |
| XC2C64A-5CPG56C |
CSP |
56 |
Compact |
Ultra-miniature |
Getting Started with XC2C64A-5VQG44C
Development Resources
Essential Tools
- Development Software: ISE or Vivado Design Suite
- Programming Cable: Platform Cable USB II or compatible
- Evaluation Board: CoolRunner-II starter kit (optional)
Learning Materials
- Datasheet and reference manuals
- Application notes for common implementations
- Online video tutorials and webinars
- Community forums and technical support
First Project Steps
- Install Design Tools: Download and configure development environment
- Create New Project: Set up project for XC2C64A-5VQG44C target
- Design Entry: Enter logic using VHDL, Verilog, or schematic capture
- Synthesis and Implementation: Generate programming bitstream
- Program Device: Upload configuration via JTAG interface
Technical Support and Resources
Documentation
AMD provides comprehensive technical documentation:
- DS311 Datasheet: Complete electrical and timing specifications
- UG129 User Guide: Detailed architecture and design guidelines
- Application Notes: Design best practices and examples
Online Resources
- AMD Technical Support Portal
- Community forums and discussion boards
- Video tutorials and training courses
- Reference designs and example projects
Why Choose XC2C64A-5VQG44C?
Competitive Advantages
The XC2C64A-5VQG44C offers compelling benefits for designers:
Cost-Effectiveness
- Lower system cost through integration
- Reduced external component count
- Single-chip solution for multiple functions
Design Flexibility
- Instant-on non-volatile configuration
- Field-upgradeable functionality
- Rapid prototyping capability
Reliability
- Proven CoolRunner-II technology platform
- Industrial-grade quality and testing
- Long-term product availability
Conclusion
The XC2C64A-5VQG44C represents an optimal choice for embedded system designers requiring low-power, high-performance programmable logic. With its comprehensive feature set, robust architecture, and extensive development ecosystem, this CPLD enables rapid implementation of complex digital designs across industrial, consumer, and communications applications.
Whether you’re developing battery-powered portable equipment or high-speed communication interfaces, the XC2C64A-5VQG44C delivers the performance, power efficiency, and flexibility needed for modern electronic designs. Its combination of ultra-low power consumption, instant-on capability, and comprehensive development tool support makes it an excellent foundation for innovative products.
Frequently Asked Questions
What is the main difference between CPLD and FPGA?
CPLDs like the XC2C64A-5VQG44C offer non-volatile configuration, instant-on operation, and predictable timing, while FPGAs typically provide higher gate counts but require external configuration memory.
Can the XC2C64A-5VQG44C be programmed multiple times?
Yes, this device supports unlimited reprogramming cycles, making it ideal for development and field upgrades.
What voltage levels are supported on the I/O pins?
The XC2C64A-5VQG44C supports 1.5V, 1.8V, 2.5V, and 3.3V I/O standards, enabling flexible system integration.
How much power does this device consume?
Typical standby power is only 28.8µW with 16µA current draw, making it one of the lowest-power CPLDs available.
Is the device RoHS compliant?
Yes, the XC2C64A-5VQG44C is manufactured using lead-free processes and meets RoHS environmental standards.
