Overview of XC17S10XLVO8I FPGA Configuration Memory

The XC17S10XLVO8I is a one-time programmable (OTP) configuration PROM specifically designed for storing configuration bitstreams for Xilinx Spartan and Spartan-XL FPGAs. This industrial-grade memory solution operates at 3.3V and comes in a compact 8-pin VOIC (Very Small Outline IC) package, making it ideal for space-constrained embedded systems and industrial applications requiring reliable FPGA configuration storage.

As part of Xilinx’s proven XC17S family of configuration PROMs, the XC17S10XLVO8I offers exceptional reliability with guaranteed 20-year data retention, making it suitable for long-lifecycle industrial, automotive, and aerospace applications.

Key Features and Benefits

Advanced Configuration Memory Technology

The XC17S10XLVO8I leverages low-power CMOS floating-gate process technology to deliver:

• 10,000-bit configuration storage capacity compatible with XCS10XL and XC17S10XL Spartan FPGAs
• Industrial temperature range operation from -40°C to +85°C
• 3.3V power supply with low active current consumption (5mA max)
• Ultra-low standby current of only 50µA typical
• Guaranteed 20-year data retention for long-term reliability

Simple Interface Design

One of the standout features of the XC17S10XLVO8I is its straightforward connection to Xilinx FPGA devices:

• Requires only one user I/O pin for configuration
• Compatible with Master Serial mode and Slave Serial mode
• Automatic configuration loading with minimal external components
• Programmable reset polarity (active-high or active-low)

Compact Package Options

The 8-pin VOIC/TSOP package (VO8) provides:

• Space-efficient footprint for dense PCB layouts
• Surface-mount technology for automated assembly
• Lead-free (RoHS-compliant) packaging available
• Excellent thermal performance for industrial environments

Technical Specifications

Electrical Characteristics

Timing Specifications

Pin Configuration and Functions

Compatible Spartan FPGA Devices

The XC17S10XLVO8I is specifically designed for the following Xilinx Spartan FPGAs:

This configuration memory provides adequate storage capacity with margin for the complete bitstream of these popular Spartan devices.

Application Circuit Design

Master Serial Mode Configuration

In Master Serial mode, the Spartan FPGA automatically loads configuration from the XC17S10XLVO8I:

Recommended Connections:

• Connect PROM DATA pin to FPGA DIN pin
• Connect FPGA CCLK output to PROM CLK input
• Connect FPGA INIT output to PROM RESET/OE input (ensures proper reset)
• Connect FPGA DONE output to PROM CE input (disables PROM after configuration)
• Add 4.7kΩ pull-up resistor from RESET/OE to VCC

This configuration ensures reliable automatic loading on power-up and proper reset sequencing during reconfiguration events.

Power Supply Considerations

For optimal performance and reliability:

• Both VCC pins must be connected together in the application circuit
• Use adequate decoupling capacitors (0.1µF ceramic) close to VCC pins
• Ensure clean 3.3V ±0.6V power supply within specified operating range
• Pull DATA pin to VCC or GND when in standby mode to minimize current consumption

Programming and Development

Programming Support

The XC17S10XLVO8I can be programmed using:

• Xilinx HW-130 programmer with software support for polarity inversion
• Leading third-party programmer manufacturers with XC17S device support
• Standard HEX format files generated by Xilinx development tools

Design Software Compatibility

Configuration bitstream generation is supported by:

• Xilinx Alliance Series development system
• Xilinx Foundation Series development tools
• ISE Design Suite for modern FPGA development workflows

The development software compiles Spartan device designs into standard HEX format compatible with commercial PROM programmers.

Operating Modes and Control

Active Mode

During configuration or normal operation:

• Address counter increments on each rising CLK edge when CE is low
• DATA output drives configuration bitstream to FPGA
• Supply current: 5mA maximum at maximum frequency
• Output latency: 80ns maximum from clock to valid data

Standby Mode

For power conservation after configuration:

• Assert CE high to enter low-power mode
• DATA output enters high-impedance state
• Standby current reduces to 50µA typical
• Address counter state is maintained

Reset Functionality

The programmable RESET/OE pin offers flexible control:

• Active-high reset (default): High level holds address counter at zero
• Active-low reset (preferred): Low level resets counter, compatible with FPGA INIT pin
• Polarity configured during programming via programmer software
• Reset hold time: 25ns minimum to guarantee counter reset

Quality and Reliability

Long-Term Data Retention

The XC17S10XLVO8I provides exceptional reliability:

• Guaranteed 20-year data retention at specified conditions
• Floating-gate technology ensures stable long-term storage
• Suitable for applications requiring extended operational lifetime
• Proven technology with extensive field deployment history

Industrial Temperature Range

Designed for demanding environments:

• Operates reliably from -40°C to +85°C ambient temperature
• Maintains full specifications across entire temperature range
• Ideal for automotive, industrial control, and outdoor applications
• Enhanced temperature stability compared to commercial-grade alternatives

Package Reliability

The VOIC/TSOP package offers:

• Excellent moisture sensitivity rating
• Compatible with standard SMT assembly processes
• Lead-free construction meets RoHS requirements
• Robust mechanical structure for vibration and shock environments

Advantages Over Alternative Solutions

Compared to External Flash Memory

• Simpler interface: No complex SPI or parallel protocols required
• Faster configuration: Direct serial interface optimized for FPGA loading
• Lower component count: Minimal external components needed
• Proven compatibility: Designed specifically for Spartan FPGAs

Compared to Larger Capacity PROMs

• Cost-effective: Right-sized capacity for XCS10XL applications
• Smaller footprint: 8-pin package saves board space
• Lower power: Optimized for the specific bitstream size
• Better availability: Popular device with broad distributor support

Typical Applications

The XC17S10XLVO8I configuration PROM is ideal for:

Industrial Control Systems

• Programmable logic controllers (PLCs)
• Motor control and drive systems
• Process automation equipment
• Factory automation machinery

Embedded Computing

• Single-board computers with FPGA acceleration
• Data acquisition systems
• Signal processing platforms
• Custom computing engines

Communications Equipment

• Network interface cards
• Protocol converters
• Telecommunications infrastructure
• Wireless base station equipment

Automotive Electronics

• Engine control units with FPGA co-processors
• Advanced driver assistance systems (ADAS)
• Infotainment system controllers
• Sensor fusion platforms

Test and Measurement

• Automated test equipment (ATE)
• Laboratory instrumentation
• Data logging systems
• Digital oscilloscopes and analyzers

Ordering Information and Package Details

Part Number Breakdown: XC17S10XLVO8I

• XC17S: Configuration PROM family identifier
• 10: 10,000-bit capacity (compatible with XCS10XL)
• XL: 3.3V low-voltage version
• VO8: 8-pin VOIC/TSOP package
• I: Industrial temperature range (-40°C to +85°C)

Package Dimensions

8-pin VOIC/TSOP (VO8) Package:

• Compact surface-mount outline
• Industry-standard footprint
• Thin profile for space-constrained designs
• Compatible with automated pick-and-place systems

Alternative Package Options

For different application requirements, the XC17S10XL is available in:

• PD8: 8-pin plastic DIP for through-hole mounting
• SO20: 20-pin SOIC for applications requiring additional no-connect pins
• PDG8/VOG8: Lead-free versions with ‘G’ designation

Design Considerations and Best Practices

PCB Layout Guidelines

For optimal performance:

• Place configuration PROM close to FPGA to minimize trace lengths
• Use short, direct connections between PROM DATA and FPGA DIN
• Provide solid ground plane for return current paths
• Route CLK signal with controlled impedance if operating at maximum frequency
• Keep VCC traces wide and short to minimize voltage drop

Decoupling Requirements

Proper power supply decoupling is critical:

• Place 0.1µF ceramic capacitor within 10mm of each VCC pin
• Use low-ESR capacitors for best high-frequency performance
• Add 10µF bulk capacitor near PROM if switching noise is present
• Ensure good ground connection to power plane

Reset Circuit Design

To ensure reliable configuration:

• Connect FPGA INIT to PROM RESET/OE for automatic reset synchronization
• Add 4.7kΩ pull-up resistor from RESET/OE to VCC
• Consider RC delay circuit if power supply has slow rise time
• Verify reset timing meets minimum hold time requirement (25ns)

Handling Multiple Configurations

For applications requiring configuration switching:

• Tie OE pin low to preserve address counter state after configuration
• Use external logic to control CE pin for selective configuration loading
• Ensure proper reset sequencing when switching between configurations
• Consider using larger capacity PROM if storing multiple complete bitstreams

Storage and Handling

ESD Precautions

The XC17S10XLVO8I contains sensitive CMOS circuitry:

• Use proper ESD-safe handling procedures
• Wear grounded wrist straps during assembly and testing
• Store devices in anti-static tubes or conductive foam
• Avoid touching device pins directly

Environmental Storage

For long-term storage before assembly:

• Store at room temperature in low-humidity environment
• Keep devices in original moisture-barrier packaging until use
• Follow moisture sensitivity level (MSL) guidelines for SMT processes
• Avoid exposure to extreme temperatures during storage

Support and Resources

Documentation

Comprehensive technical resources include:

• Complete datasheet with detailed electrical specifications
• Application notes for Master Serial and Slave Serial modes
• Programming guides for supported programmer hardware
• PCB layout guidelines and reference designs

Development Tools

Compatible with industry-standard tools:

• Xilinx ISE Design Suite for bitstream generation
• HEX file format compatible with most PROM programmers
• Simulation models for design verification
• Reference designs available from Xilinx

Technical Support

Access to expert assistance:

• Xilinx technical support for configuration questions
• Distributor application engineering support
• Online community forums and knowledge base
• Training resources and webinars

Comparison with Other XC17S Family Members

Conclusion

The XC17S10XLVO8I configuration PROM provides a reliable, cost-effective solution for storing Spartan FPGA configuration bitstreams in industrial applications. With its simple interface, industrial temperature range, guaranteed 20-year data retention, and compact 8-pin VOIC package, it’s the ideal choice for embedded systems requiring robust FPGA configuration memory.

Whether you’re designing industrial control systems, telecommunications equipment, or automotive electronics, the XC17S10XLVO8I offers the proven performance and reliability needed for demanding applications. Its compatibility with standard development tools and programming hardware makes integration into your design workflow straightforward and efficient.

For applications requiring FPGA configuration storage with industrial-grade reliability, the XC17S10XLVO8I remains a trusted choice backed by Xilinx’s decades of semiconductor expertise and comprehensive technical support.