The XCF04SVOG20C is a high-performance 4Mbit in-system programmable configuration PROM designed by AMD Xilinx for FPGA applications. This industrial-grade memory solution delivers reliable, non-volatile storage for FPGA bitstreams with exceptional durability and versatility.
What is XCF04SVOG20C?
The XCF04SVOG20C belongs to AMD Xilinx’s Platform Flash PROM family, providing designers with a reprogrammable method for storing Xilinx FPGA configuration data. This PROM integrates advanced CMOS NOR flash technology in a compact 20-pin TSSOP package, making it ideal for space-constrained applications requiring robust configuration memory.
Key Technical Specifications
Core Performance Features
| Specification |
Value |
| Memory Capacity |
4Mbit (512KB) |
| Package Type |
20-TSSOP (4.40mm width) |
| Supply Voltage |
3.0V to 3.6V |
| Operating Temperature |
-40°C to +85°C (Industrial) |
| Program/Erase Cycles |
20,000 cycles |
| Data Retention |
20+ years |
| Maximum Clock Speed |
Up to 33MHz |
| Standby Current |
0.01mA (typical) |
Configuration Modes
The XCF04SVOG20C supports multiple FPGA configuration modes:
- Master Serial Mode – PROM controls configuration process
- Slave Serial Mode – External controller drives configuration
- JTAG Programming – IEEE 1149.1/1532 boundary-scan support
- Cascading Capability – Multiple PROMs for larger bitstreams
XCF04SVOG20C Pin Configuration
Pin Description Table
| Pin Name |
Function |
Description |
| VCC |
Power Supply |
3.0V to 3.6V power input |
| GND |
Ground |
Ground reference |
| CLK |
Clock Input |
External clock for serial programming |
| DATA |
Data Output |
Serial data output to FPGA |
| CE |
Chip Enable |
Active-low chip enable |
| OE/RESET |
Output Enable |
Output enable or reset function |
| VCCJ |
JTAG Power |
Dedicated JTAG I/O power supply |
| TDI, TDO, TMS, TCK |
JTAG Pins |
Boundary-scan programming interface |
Technical Architecture and Features
Advanced Flash Memory Technology
The XCF04SVOG20C utilizes low-power advanced CMOS NOR flash architecture, ensuring:
- Non-volatile storage – Configuration data retained without power
- In-system programmability – Update firmware without board removal
- High endurance – 20,000 program/erase cycles guarantee
- Industrial temperature range – Operates from -40°C to +85°C
- Fast access times – Data output rates up to 33MHz
Voltage Compatibility
This configuration PROM features flexible I/O voltage compatibility:
- Compatible with 1.8V FPGA I/O levels
- Compatible with 2.5V FPGA I/O levels
- Compatible with 3.3V FPGA I/O levels
- Dedicated VCCJ pin for JTAG operations
XCF04SVOG20C Applications
Industrial Control Systems
The XCF04SVOG20C excels in industrial automation applications requiring:
- Reliable FPGA configuration storage
- Field-upgradable firmware
- Wide operating temperature tolerance
- Long-term data retention
Communication Equipment
Telecommunications infrastructure benefits from:
- Fast configuration loading
- Multiple bitstream storage via cascading
- JTAG programming for remote updates
- Low standby power consumption
Automotive Electronics
Automotive systems leverage the XCF04SVOG20C for:
- ECU configuration management
- Infotainment system programming
- Harsh environment operation (-40°C to +85°C)
- High reliability requirements
Medical Devices
Medical equipment applications utilize:
- Non-volatile configuration storage
- In-system programmability for updates
- Industrial-grade reliability
- Compact 20-pin footprint
Design Integration Guidelines
Power Supply Requirements
| Parameter |
Min |
Typ |
Max |
Unit |
| Supply Voltage (VCC) |
3.0 |
3.3 |
3.6 |
V |
| JTAG Supply (VCCJ) |
3.0 |
3.3 |
3.6 |
V |
| Active Current |
– |
– |
30 |
mA |
| Standby Current |
– |
0.01 |
– |
mA |
PCB Layout Considerations
When designing with the XCF04SVOG20C:
- Decoupling – Place 0.1µF ceramic capacitors close to VCC and VCCJ pins
- Signal Integrity – Keep CLK and DATA traces short and direct
- Thermal Management – Ensure adequate airflow for industrial temperatures
- JTAG Access – Provide accessible test points for programming
Programming and Development Tools
Supported Software
The XCF04SVOG20C integrates seamlessly with:
- Xilinx ISE Design Suite – Legacy FPGA design environment
- Vivado Design Suite – Modern FPGA development platform
- iMPACT – Programming and configuration tool
- ChipScope – In-system debugging and verification
Programming Methods
JTAG Boundary-Scan Programming:
- IEEE 1149.1/1532 compliant
- In-circuit programming capability
- Production programming support
- Field update capability
Serial Configuration:
- Direct FPGA configuration interface
- Automatic configuration on power-up
- Cascading for multiple bitstreams
- Fast configuration loading
Comparison with Similar Configuration PROMs
XCF04SVOG20C vs XCF02SVOG20C
| Feature |
XCF04SVOG20C |
XCF02SVOG20C |
| Memory Size |
4Mbit |
2Mbit |
| Package |
20-TSSOP |
20-TSSOP |
| Voltage |
3.0-3.6V |
3.0-3.6V |
| Use Case |
Medium-complexity FPGAs |
Smaller FPGAs |
XCF04SVOG20C vs XCF08PVOG48C
| Feature |
XCF04SVOG20C |
XCF08PVOG48C |
| Memory Size |
4Mbit |
8Mbit |
| Supply Voltage |
3.3V (XCFxxS) |
1.8V (XCFxxP) |
| Package Pins |
20-TSSOP |
48-VFBGA |
| Configuration Modes |
Serial only |
Serial + SelectMAP |
Reliability and Quality Specifications
Environmental Compliance
- RoHS Compliant – Lead-free manufacturing
- MSL Rating – Moisture Sensitivity Level 3
- ESD Protection – Human Body Model compliant
- ECCN Classification – 3A991B1B1
Quality Standards
The XCF04SVOG20C meets stringent quality requirements:
- Industrial temperature grade screening
- 100% production testing
- Long-term reliability validation
- Automotive-grade quality available
Storage and Handling
Moisture Sensitivity
The XCF04SVOG20C carries MSL 3 (Moisture Sensitivity Level 3) rating:
- Floor life: 168 hours at ≤30°C/60% RH after bag opening
- Baking required if floor life exceeded
- Storage in sealed moisture barrier bag recommended
ESD Precautions
Handle with proper ESD precautions:
- Use grounded wrist straps during handling
- Work on ESD-safe workstations
- Store in anti-static packaging
- Follow JEDEC JESD625 guidelines
Frequently Asked Questions (FAQ)
Is the XCF04SVOG20C still in production?
The XCF04SVOG20C has been marked as obsolete by AMD Xilinx. However, authorized distributors maintain inventory for legacy designs and replacements. Consider newer configuration solutions for new designs.
Can I replace XCF04SVOG20C with other PROMs?
Yes, pin-compatible alternatives include:
- XCF02SVOG20C (smaller capacity)
- XCF01SVOG20C (minimum capacity)
- Check footprint and voltage compatibility
What programming cable do I need?
The XCF04SVOG20C requires:
- Xilinx Platform Cable USB II
- Xilinx DLC10 Download Cable
- Any JTAG-compatible programmer supporting IEEE 1149.1
How do I cascade multiple XCF04SVOG20C devices?
Connect the CEO (Chip Enable Output) pin of one PROM to the CE (Chip Enable) pin of the next PROM in the chain. Configure timing in design software.
What is the typical configuration time?
Configuration time depends on:
- Clock frequency (up to 33MHz)
- Bitstream size
- Configuration mode
- Typical: 150-300ms for full 4Mbit
Procurement and Availability
Authorized Distributors
Purchase genuine XCF04SVOG20C from:
- DigiKey Electronics
- Mouser Electronics
- Arrow Electronics
- Avnet
- Future Electronics
Package Options
- Standard Packaging: Tube (74 pieces per tube)
- Alternative: Tape and reel available for automated assembly
- Minimum Order: Typically 1 piece for samples
Pricing Considerations
XCF04SVOG20C pricing varies based on:
- Order quantity (volume discounts available)
- Market availability (obsolete status)
- Distribution channel
- Packaging requirements
Conclusion
The XCF04SVOG20C remains a reliable configuration memory solution for legacy FPGA designs requiring 4Mbit non-volatile storage. Its robust industrial specifications, flexible configuration modes, and proven reliability make it suitable for applications demanding long-term field operation. While marked obsolete, existing inventory supports replacement and maintenance requirements.
For new designs, consult AMD Xilinx’s current configuration memory portfolio or consider modern FPGAs with integrated configuration flash. Legacy systems benefit from the XCF04SVOG20C’s exceptional 20,000 program/erase cycles, 20+ year data retention, and wide industrial temperature range.
