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AMD XC2S50-5PQG208C
- Part No.:
- XC2S50-5PQG208C
- Manufacturer:
- AMD
- Category:
- FPGAs (Field Programmable Gate Array)
- Package:
- 208-BFQFP
- Datasheet:
-
XC2S50-5PQG208C.pdf
- Description:
- IC FPGA 140 I/O 208QFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,941
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Product details
Overview
XC2S50-5PQG208C from AMD (formerly Xilinx) is a Spartan-II family FPGA with 50,000 system gates, 176 user I/Os, and a 5 ns input/output delay. It features configurable logic blocks (CLBs), distributed RAM, and dedicated carry logic, used in industrial control logic replacement and low-cost digital signal preprocessing.
For engineers reviewing the XC2S50-5PQG208C datasheet, pinout, applications, or equivalent options, key selection factors include I/O count, speed grade (-5), PQG208 package compatibility, and legacy Spartan-II design migration support.
Technical Context
The XC2S50-5PQG208C implements synchronous logic using four-input LUTs and flip-flops per CLB, with global clock routing and eight dedicated clock lines. Its configuration memory is SRAM-based and loaded via JTAG or master serial mode using external PROM.
It supports LVCMOS/LVTTL I/O standards at 3.3 V, includes internal pull-up resistors, and provides boundary-scan (IEEE 1149.1) compliance for testability. No on-chip oscillator or analog functions are integrated.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Capacity | 50,000 system gates - defines maximum combinational logic density for gate-equivalent synthesis |
| Speed Grade | -5 - guarantees 5 ns input-to-output path delay under specified conditions |
| User I/O Pins | 176 - supports high-pin-count peripheral interfacing without external glue logic |
| Configuration Mode | Master Serial / JTAG - enables in-system programming and debug via standard interfaces |
| I/O Standard | LVCMOS/LVTTL 3.3 V - ensures interoperability with common microcontrollers and bus peripherals |
| Package Type | PQG208 - 208-pin plastic quad flat pack with 0.5 mm pitch, RoHS-compliant |
Pinout & Package
PQG208 is a 208-pin plastic quad flat pack (PQFP) with 0.5 mm lead pitch, thermally enhanced for industrial ambient operation up to 85°C. Pin numbering follows standard counter-clockwise convention starting from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GCK0–GCK7 | Global Clock Input | Dedicated low-skew clock routing to all CLBs and I/O blocks |
| PROGRAM_B | Configuration Initiate | Active-low signal that clears configuration memory and initiates reload |
| DONE | Configuration Status | Open-drain output indicating successful configuration completion |
| TCK/TMS/TDI/TDO | JTAG Boundary-Scan | IEEE 1149.1 compliant test access port for programming and verification |
| IO_Lxx | User I/O Bank | Configurable as input, output, or bidirectional with programmable slew rate and drive strength |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Logic Blocks (CLBs) | Each contains two 4-input LUTs and two flip-flops - enables efficient implementation of sequential and combinatorial logic |
| Distributed RAM | 16 bits per CLB - provides small, fast, distributed memory without dedicated block RAM resources |
| Carry Chain Logic | Fast arithmetic propagation across CLBs - improves adder/subtractor performance over general routing |
| Internal Pull-Up Resistors | Programmable per I/O pin - eliminates need for external biasing components on unused or open-bus lines |
Applications
| Industrial PLC Logic Replacement | Legacy Test Equipment Control |
|---|---|
Use Scenario: Replacing discrete TTL/PLD-based ladder logic in aging programmable logic controllers. IC Role / Device Role / Timing Role: Configurable state machine implementing scan-cycle execution and I/O scanning. Use Value: Reduces board space and long-term obsolescence risk while maintaining deterministic 5 ns I/O timing. | Use Scenario: Upgrading control firmware and signal routing in discontinued automatic test equipment (ATE) platforms. IC Role / Device Role / Timing Role: Glue logic and protocol translation between legacy GPIB controllers and modern DIO modules. Use Value: Enables reuse of existing PCBs with no layout change, leveraging 176 I/Os for parallel bus expansion. |
| Low-Cost Digital Preprocessing | Education & Prototyping Platform |
Use Scenario: Real-time filtering and threshold detection in sensor interface modules before ADC sampling. IC Role / Device Role / Timing Role: Synchronous data path processor with pipeline registers and carry-chain arithmetic. Use Value: Achieves sub-microsecond latency using distributed RAM and fixed 5 ns I/O delay for time-critical edge detection. | Use Scenario: Teaching digital design fundamentals using schematic entry and VHDL/Verilog synthesis flows. IC Role / Device Role / Timing Role: Entry-level reconfigurable platform with accessible JTAG and master serial configuration. Use Value: Supports hands-on debugging via DONE pin monitoring and boundary-scan visibility into internal logic states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FPGA logic replacement applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XC2S50-6PQ208C | Slower -6 speed grade (6 ns delay); same logic capacity and I/O count | Suitable where timing margin allows relaxed setup/hold constraints | Select when cost sensitivity outweighs worst-case timing requirements |
| XC3S50A-4VQG100C | Smaller 100-pin VQFP package; Spartan-3A architecture with higher logic efficiency but no direct pin mapping | Requires PCB redesign; better for new designs needing lower power or more embedded RAM | Choose for new projects prioritizing power efficiency and toolchain support over legacy compatibility |
Compared with XC2S50-5PQG208C, the -6 variant trades speed for cost in stable environments, while the XC3S50A-4VQG100C offers architectural improvements but mandates layout revision and tool migration - making XC2S50-5PQG208C optimal for drop-in replacements in existing Spartan-II systems.
Availability
XC2S50-5PQG208C is available at Aetrix Electronics and suitable for industrial control upgrades, legacy test equipment refurbishment, and academic FPGA prototyping requiring stable component supply and long-term sourcing continuity.
Supply support for XC2S50-5PQG208C includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
AMD acquired Xilinx in 2022 and maintains legacy Spartan product support through its Adaptive SoC and FPGA business unit.
The Spartan-II family was designed for cost-sensitive, high-volume applications requiring predictable timing, simple configuration, and broad I/O flexibility - targeting industrial automation and education markets.
FAQ
What is the configuration method supported by XC2S50-5PQG208C?
The XC2S50-5PQG208C supports Master Serial mode using an external PROM and IEEE 1149.1 JTAG boundary-scan for programming and debugging. Configuration occurs on power-up or after assertion of the PROGRAM_B pin, with status indicated by the DONE pin. The XC2S50-5PQG208C does not support slave parallel or selectMAP modes.
Does XC2S50-5PQG208C include embedded block RAM?
No, the XC2S50-5PQG208C does not contain dedicated block RAM resources. It relies solely on distributed RAM implemented within CLBs - 16 bits per CLB - for small memory needs such as shift registers or state encoding. Larger memory functions require external SRAM or must be synthesized using LUT-based RAM primitives in the XC2S50-5PQG208C.
What I/O standards are compatible with XC2S50-5PQG208C?
The XC2S50-5PQG208C supports LVCMOS and LVTTL I/O standards at 3.3 V only. It does not support 2.5 V, 1.8 V, or differential signaling standards like LVDS or RSDS. Each I/O bank is independently configurable for input, output, or bidirectional use, with programmable drive strength and slew rate settings defined in the XC2S50-5PQG208C configuration bitstream.
Is XC2S50-5PQG208C pin-compatible with other Spartan-II devices?
XC2S50-5PQG208C is pin-compatible only with other Spartan-II FPGAs in the PQG208 package, such as XC2S50-6PQG208C and XC2S100-5PQG208C. It is not compatible with PQ208 or PQ240 variants due to differing thermal pad configurations and pin assignments. Pin compatibility requires identical package suffix and speed-grade-independent I/O mapping per the XC2S50-5PQG208C datasheet.
What is the maximum operating junction temperature for XC2S50-5PQG208C?
The XC2S50-5PQG208C is rated for industrial temperature operation with a maximum junction temperature of 100°C. Its PQG208 package supports ambient operating temperatures from –40°C to +85°C when mounted on a standard FR-4 PCB with adequate copper pour. Thermal derating applies above 85°C ambient, and the XC2S50-5PQG208C must be operated within these limits to ensure reliable configuration retention and timing performance.
XC2S50-5PQG208C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- AMD
- Series:
- Spartan®-II
- Package/Case:
- 208-BFQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Number of LABs/CLBs:
- 384
- Number of Logic Elements/Cells:
- 1728
- Total RAM Bits:
- 32768
- Number of I/O:
- 140
- Number of Gates:
- 50000
- Voltage - Supply:
- 2.375V ~ 2.625V
- Mounting Type:
- Surface Mount
- Operating Temperature:
- 0°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 208-PQFP (28x28)
XC2S50-5PQG208C FAQ
1.How can I place an order for XC2S50-5PQG208C through Aetrix?
Please submit a Request for Quotation (RFQ) for XC2S50-5PQG208C on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for XC2S50-5PQG208C reliable?
The price and inventory of XC2S50-5PQG208C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XC2S50-5PQG208C is usually 5 days.
3.What payment methods are accepted for XC2S50-5PQG208C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XC2S50-5PQG208C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XC2S50-5PQG208C?
XC2S50-5PQG208C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XC2S50-5PQG208C order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for XC2S50-5PQG208C?
For technical support, including XC2S50-5PQG208C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XC2S50-5PQG208C requirements.
6.How does Aetrix verify that XC2S50-5PQG208C is sourced from the original manufacturer or authorized distributors?
All XC2S50-5PQG208C products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that XC2S50-5PQG208C meets industry standards.
7.What is the process for return or replacement of XC2S50-5PQG208C?
All XC2S50-5PQG208C units undergo pre-shipment inspection (PSI). If there is an issue with XC2S50-5PQG208C, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The XC2S50-5PQG208C part is unused and in its original packaging.
Return procedure for XC2S50-5PQG208C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
XC2S50-5PQG208C Tags
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