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XC18V02VQG44C is a 2Mbit ISP Configuration PROM by Xilinx in 44-Pin VQFP package. 3.3V operation, 20ns access time. Perfect for FPGA configuration needs.
The XC18V02VQG44C is a high-performance 2-Megabit In-System Programmable (ISP) Configuration PROM manufactured by Xilinx (now AMD). This advanced memory device provides an efficient, cost-effective solution for storing and reprogramming Xilinx FPGA configuration bitstreams. With its 3.3V operation, 20ns access time, and robust 44-pin VQFP package, the XC18V02VQG44C stands out as a reliable choice for embedded system designers and FPGA developers.
XC18V02VQG44C Key Features and Benefits
The XC18V02VQG44C belongs to the XC18V00 series of configuration PROMs specifically designed for Xilinx FPGA applications. Here are the standout features that make this component exceptional:
High-Speed Performance
- 20ns access time ensures rapid FPGA configuration
- Supports both Master Serial and Slave Serial configuration modes
- Optimized for high-speed embedded applications
In-System Programmability
- Reprogram the device without removing it from the circuit board
- Eliminates the need for expensive programming equipment
- Reduces development time and manufacturing costs significantly
Robust Endurance and Reliability
- 20,000 write/erase cycles guarantee long-term reliability
- Commercial temperature range (0°C to 70°C)
- Low standby power consumption for energy-efficient operation
Flexible Cascading Capability
- CEO output enables seamless cascading with multiple PROMs
- Compatible with XC17V00 one-time programmable serial PROM family
- Scale configuration storage for larger FPGA designs easily
XC18V02VQG44C Technical Specifications
| Parameter |
Specification |
| Part Number |
XC18V02VQG44C |
| Manufacturer |
Xilinx (AMD) |
| Memory Type |
In-System Programmable Configuration PROM |
| Memory Density |
2 Mbit (256K x 8) |
| Interface Type |
Parallel/Serial |
| Supply Voltage (VCCINT) |
3.3V (3.0V to 3.6V) |
| Access Time |
20ns |
| Operating Temperature |
0°C to +70°C (Commercial) |
| Endurance |
20,000 Program/Erase Cycles |
| Package Type |
44-Pin VQFP (Pb-Free) |
| Package Dimensions |
10mm x 10mm |
| RoHS Compliance |
Yes (RoHS3 Compliant) |
| Lead-Free Status |
Pb-Free (VQG44 Package) |
XC18V02VQG44C Pin Configuration Overview
The 44-pin VQFP package provides comprehensive functionality for FPGA configuration. Below is a summary of the essential pin functions:
| Pin Name |
Function |
Description |
| D0-D7 |
Data Output |
Serial/Parallel data outputs for FPGA configuration |
| CLK |
Clock Input |
Configuration clock input from FPGA |
| CE |
Chip Enable |
Active-low chip enable input |
| OE/RESET |
Output Enable/Reset |
Controls data output and device reset |
| CEO |
Cascade Enable Output |
Enables cascading to next PROM in chain |
| CF |
Configuration Flag |
Indicates configuration status |
| TDI/TDO/TMS/TCK |
JTAG Interface |
IEEE 1149.1 JTAG boundary scan pins |
| VCCINT |
Power Supply |
3.3V internal logic power supply |
| GND |
Ground |
Ground connection pins |
XC18V02VQG44C Electrical Characteristics
Absolute Maximum Ratings
| Parameter |
Symbol |
Value |
Unit |
| Supply Voltage |
VCCINT |
-0.5 to 4.0 |
V |
| Input Voltage |
VIN |
-0.5 to VCCINT + 0.5 |
V |
| Storage Temperature |
TSTG |
-65 to +150 |
°C |
| Operating Temperature |
TOPR |
0 to +70 |
°C |
DC Characteristics (VCCINT = 3.3V ± 10%)
| Parameter |
Min |
Typ |
Max |
Unit |
| Input High Voltage (VIH) |
2.0 |
– |
VCCINT + 0.3 |
V |
| Input Low Voltage (VIL) |
-0.3 |
– |
0.8 |
V |
| Output High Voltage (VOH) |
2.4 |
– |
– |
V |
| Output Low Voltage (VOL) |
– |
– |
0.4 |
V |
| Standby Current (ISB) |
– |
– |
10 |
mA |
Compatible Xilinx FPGA Families
The XC18V02VQG44C configuration PROM is designed to work seamlessly with various Xilinx FPGA families. This compatibility makes it an ideal choice for diverse applications:
| FPGA Family |
Configuration Support |
| Spartan-II |
Full Support |
| Spartan-IIE |
Full Support |
| Spartan-3 Series |
Full Support |
| Virtex |
Full Support |
| Virtex-E |
Full Support |
| Virtex-II |
Full Support |
| Virtex-II Pro |
Full Support |
XC18V02VQG44C Application Areas
This versatile configuration PROM serves multiple industries and applications effectively:
Industrial Automation
- Programmable Logic Controllers (PLCs)
- Motor control systems
- Industrial networking equipment
Telecommunications
- Network switches and routers
- Base station equipment
- Communication protocol converters
Consumer Electronics
- Set-top boxes
- Digital video equipment
- Audio processing systems
Automotive Systems
- Infotainment systems
- Advanced driver assistance systems (ADAS)
- Vehicle networking modules
Medical Devices
- Diagnostic imaging equipment
- Patient monitoring systems
- Laboratory instrumentation
How to Program the XC18V02VQG44C
Programming the XC18V02VQG44C is straightforward using Xilinx development tools. Follow these essential steps:
Using Xilinx iMPACT Software
- Connect the JTAG Interface: Wire TDI, TDO, TMS, and TCK pins to your programming cable
- Launch iMPACT: Open Xilinx iMPACT software on your development system
- Detect Device: Allow iMPACT to automatically detect the XC18V02VQG44C
- Load Configuration File: Select the appropriate .mcs or .bit file
- Program Device: Execute the programming sequence
- Verify Programming: Confirm successful configuration through verification
JTAG Security Features
The XC18V02VQG44C includes optional JTAG read security to protect your intellectual property. Additionally, you can configure parallel mode operation and alternative pin functions through control bits.
XC18V02VQG44C vs. Alternative Configuration Memories
When selecting a configuration PROM, consider these comparisons:
| Feature |
XC18V02VQG44C |
XCF02S |
AT17LV002 |
| Memory Density |
2 Mbit |
2 Mbit |
2 Mbit |
| Voltage |
3.3V |
1.8V/3.3V |
3.3V |
| ISP Support |
Yes |
Yes |
No |
| JTAG Interface |
Yes |
Yes |
No |
| Package Options |
44-VQFP |
20-TSSOP |
PLCC |
| Cascading |
Yes |
Yes |
Yes |
Ordering Information for XC18V02VQG44C
Part Number Breakdown
XC18V02VQG44C decodes as follows:
- XC18V: Xilinx 18V series configuration PROM
- 02: 2 Megabit density
- VQ: Plastic Quad Flat Package (VQFP)
- G: Lead-Free (Pb-Free) designation
- 44: 44-pin count
- C: Commercial temperature grade (0°C to 70°C)
Related Part Numbers
| Part Number |
Description |
| XC18V02VQ44C |
2Mbit PROM, 44-VQFP, Standard (non-Pb-free) |
| XC18V02PC44C |
2Mbit PROM, 44-PLCC, Standard |
| XC18V02PCG44C |
2Mbit PROM, 44-PLCC, Pb-Free |
| XC18V04VQG44C |
4Mbit PROM, 44-VQFP, Pb-Free |
| XC18V01VQG44C |
1Mbit PROM, 44-VQFP, Pb-Free |
Design Considerations and Best Practices
Power Supply Recommendations
- Use proper decoupling capacitors (0.1µF ceramic) near VCCINT pins
- Ensure stable 3.3V power rail with minimal ripple
- Connect all GND pins to a solid ground plane
PCB Layout Guidelines
- Keep JTAG traces short and matched in length
- Provide adequate thermal relief for power pins
- Follow recommended pull-up resistor (4.7kΩ) on OE/RESET pin
Configuration Timing
- Allow sufficient reset time before configuration begins
- Consider worst-case access time specifications
- Account for clock frequency limitations in cascaded configurations
Frequently Asked Questions About XC18V02VQG44C
What is the access time of XC18V02VQG44C?
The XC18V02VQG44C features a fast 20ns access time, making it suitable for high-speed FPGA configuration requirements.
Is XC18V02VQG44C RoHS compliant?
Yes, the XC18V02VQG44C with VQG44 package designation is fully RoHS3 compliant and lead-free.
Can multiple XC18V02VQG44C devices be cascaded?
Absolutely. The CEO (Cascade Enable Output) pin allows seamless cascading of multiple PROMs for larger configuration storage needs.
What programming tools support XC18V02VQG44C?
Xilinx iMPACT software and compatible JTAG programmers fully support the XC18V02VQG44C for in-system programming.
What is the operating temperature range?
The commercial grade XC18V02VQG44C operates within 0°C to +70°C temperature range.
Conclusion
The XC18V02VQG44C represents an excellent choice for FPGA configuration memory requirements. Its combination of 2Mbit storage capacity, 3.3V operation, 20ns access time, and robust in-system programmability makes it ideal for a wide range of embedded applications. Whether you’re designing industrial automation systems, telecommunications equipment, or consumer electronics, this configuration PROM delivers the reliability and performance your projects demand.
For seamless integration with your FPGA designs, the XC18V02VQG44C’s compatibility with multiple Xilinx device families and flexible cascading capabilities ensure scalability for future expansions. Consider this proven configuration memory solution for your next embedded system design.
