In the evolving world of embedded systems, many projects still rely on stable, proven technologies that deliver reliable performance at a low cost. One such solution is the XC3S500E-4PQG208C, a member of the Spartan®-3E FPGA family from Xilinx (now part of AMD).
With a rich feature set, instant-on performance, and flexible I/O capabilities, the XC3S500E-4PQG208C is a go-to choice for engineers developing cost-sensitive, mid-complexity applications in industrial automation, consumer electronics, telecom, and more.
🔍 What is XC3S500E-4PQG208C?
The XC3S500E-4PQG208C is a Field Programmable Gate Array (FPGA) built on Xilinx’s 90nm Spartan-3E architecture, offering moderate logic density, ample RAM blocks, and high-speed I/Os—all packaged in a 208-pin PQFP (Plastic Quad Flat Pack).
Its -4 speed grade indicates standard performance, and the “C” denotes a commercial temperature range (0°C to 85°C). This FPGA is non-volatile via external configuration memory and is supported by the Xilinx ISE design environment, which still serves many long-life products in the field.
📊 Technical Specifications: XC3S500E-4PQG208C
| Feature | Specification |
|---|---|
| Manufacturer | Xilinx (AMD) |
| Part Number | XC3S500E-4PQG208C |
| FPGA Family | Spartan®-3E |
| Logic Cells | 10,476 |
| System Gates | ~500,000 |
| Slices | 4,656 |
| Block RAM | 360 Kbits (~45 KB) |
| Multipliers | 20 x 18×18-bit hardware multipliers |
| User I/Os | Up to 158 |
| I/O Standards Supported | LVCMOS, LVTTL, PCI, HSTL, SSTL, LVDS |
| Configuration Type | SRAM (requires external SPI/parallel flash) |
| Package Type | PQFP-208 (Plastic Quad Flat Pack, 0.5 mm pitch) |
| Operating Voltage | 1.2V Core, 3.3V/2.5V/1.8V I/O |
| Speed Grade | -4 (standard performance) |
| Temperature Range | 0°C to +85°C (Commercial Grade) |
| RoHS Compliant | Yes |
📄 View the full Spartan-3E Datasheet (PDF) from AMD/Xilinx.
✅ Key Features of XC3S500E-4PQG208C
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Excellent Cost-to-Performance Ratio
Offers rich logic resources for medium-complexity designs at an affordable cost. -
Flexible I/O and Standards Support
Supports industry-standard I/O voltages and signaling protocols. -
Dedicated Multipliers and Block RAM
Enables simple DSP functions, control logic, and data buffering. -
External Configuration Memory
Enables flexible startup and easy in-field updates via SPI flash or parallel PROM. -
Easy Prototyping and Manufacturing
The 208-pin QFP package simplifies PCB layout and assembly compared to BGAs.
🧠 Applications of XC3S500E-4PQG208C
Thanks to its balance of logic density, I/O flexibility, and power efficiency, the XC3S500E-4PQG208C is widely used across various industries:
🏭 Industrial Control Systems
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Programmable logic controllers (PLCs)
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Motor control interfaces
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Sensor fusion and edge processing units
📡 Telecommunications Equipment
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Line card management
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Protocol translation
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I/O expansion logic
🖥️ Embedded Systems
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Peripheral controllers
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Co-processing or accelerator modules for microcontrollers
🔌 Consumer Electronics
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Display control
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Signal conversion and filtering
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Audio/video synchronization
🚀 Test and Measurement Instruments
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Digital pattern generators
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Custom interface modules
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Triggering and timing logic
🔧 Design and Development Tools
Development for the XC3S500E-4PQG208C is supported through the Xilinx ISE Design Suite, which includes:
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VHDL/Verilog synthesis
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RTL simulation
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Timing analysis
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JTAG programming tools
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IP cores for memory controllers, FIFOs, and more
🛠 Download ISE WebPACK — Xilinx’s free development environment for Spartan-3 and other legacy families.
🔗 Source XC3S500E-4PQG208C from DRex Electronics
At DRex Electronics, we supply OEMs, engineers, and purchasing managers with hard-to-find and legacy FPGAs like the XC3S500E-4PQG208C.
Why Choose DRex?
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✅ ISO 9001 Certified quality systems
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✅ Global sourcing for active and EOL components
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✅ Real-time availability for FPGAs, CPLDs, and SoCs
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✅ Fast response on quotes and volume orders
📩 Contact us for pricing, lead time, or to request technical support.
🔁 Related Devices and Migration Options
Looking for similar or scalable alternatives within the Spartan-3E family or beyond? Consider:
| Part Number | Logic Cells | Package | Key Use |
|---|---|---|---|
| XC3S250E-4PQG208C | 5,508 | PQFP-208 | Smaller designs with fewer resources |
| XC3S500E-4PQG208C | 10,476 | PQFP-208 | Balanced performance and cost |
| XC3S1000-4FGG456C | 17,280 | BGA-456 | More complex systems, higher I/O count |
| XC7S25-CSGA225 | 23,360 | BGA-225 | Upgrade path to Spartan-7 |
Need help with FPGA migration or cross-referencing? Talk to our sourcing experts for guidance.
🧩 Summary
The XC3S500E-4PQG208C delivers a reliable, flexible, and cost-effective solution for embedded control and logic interfacing tasks. Whether you’re maintaining legacy systems or designing a new product on a proven platform, this Spartan-3E device provides the features and stability needed for long-term success.
From real-time industrial control to consumer device logic management, the XC3S500E-4PQG208C continues to support engineers building efficient, dependable embedded hardware.
