The AMD XC2S50-5TQG144C is a high-performance Field Programmable Gate Array (FPGA) from the renowned Spartan-II family, delivering exceptional flexibility and cost-effectiveness for embedded systems, telecommunications, and industrial automation applications. This programmable logic device combines 50,000 system gates with advanced features in a compact 144-pin TQFP package.
XC2S50-5TQG144C Key Features and Benefits
The XC2S50-5TQG144C offers engineers a powerful combination of performance, versatility, and value. Built on cost-effective 0.18-micron process technology, this FPGA provides unlimited reprogramming cycles through SRAM-based configuration. The device supports system performance up to 263 MHz, making it suitable for demanding digital signal processing and control applications.
Core Architecture Specifications
The XC2S50-5TQG144C features a robust internal architecture based on the proven Virtex FPGA design principles. The device includes 1,728 logic cells arranged in a 16×24 CLB (Configurable Logic Block) array, providing 384 total CLBs for implementing complex digital logic functions.
| Specification |
Value |
| System Gates |
50,000 |
| Logic Cells |
1,728 |
| CLB Array |
16 × 24 (384 total) |
| Maximum Frequency |
263 MHz |
| Supply Voltage |
2.375V – 2.625V (2.5V nominal) |
| Process Technology |
0.18 µm |
| Package |
144-Pin TQFP |
| Operating Temperature |
0°C to +85°C (Commercial) |
XC2S50-5TQG144C Memory Resources
Block RAM Configuration
The XC2S50-5TQG144C integrates 32 Kbits of dedicated Block RAM organized in 8 memory blocks. These dual-port RAM blocks support synchronous read and write operations with configurable data widths, enabling efficient buffering and data storage for signal processing applications.
Distributed RAM Capabilities
Beyond Block RAM, the device provides 24,576 bits of distributed RAM implemented within the CLB structure. Each Look-Up Table (LUT) can function as 16 bits of distributed RAM, offering designers flexible memory options for register files, FIFOs, and small lookup tables.
I/O Features and Standards Support
User I/O Configuration
The 144-pin TQFP package provides up to 92 user-configurable I/O pins (excluding four global clock inputs). The XC2S50-5TQG144C supports multiple I/O standards for seamless integration with various system interfaces.
Supported I/O Standards
The device accommodates 16 selectable I/O standards including LVTTL, LVCMOS (3.3V and 2.5V), PCI (3.3V and 5V tolerant), GTL, GTL+, HSTL (Class I, III, IV), SSTL3 (Class I, II), SSTL2 (Class I, II), CTT, and AGP. This versatility ensures compatibility with diverse peripheral devices and communication protocols.
Clock Management with Delay-Locked Loops
Four Integrated DLLs
The XC2S50-5TQG144C incorporates four Delay-Locked Loops (DLLs) positioned at each corner of the die. These DLLs provide advanced clock management capabilities including clock deskewing, frequency multiplication (2×), frequency division (1.5×, 2×, 2.5×, 3×, 4×, 5×, 8×, 16×), and phase shifting.
Global Clock Distribution
Four primary low-skew global clock distribution networks ensure consistent clock delivery throughout the device. This architecture minimizes clock skew and supports high-speed synchronous designs operating at frequencies up to 200 MHz system-wide.
XC2S50-5TQG144C Configuration Options
Multiple Configuration Modes
The XC2S50-5TQG144C supports flexible configuration through several modes. Master Serial mode reads configuration data from an external serial PROM, while Slave Serial, Slave Parallel, and Boundary Scan (JTAG) modes allow external processors or controllers to load the bitstream.
Configuration Storage
Configuration data is stored in internal SRAM cells, enabling unlimited reprogramming cycles. The device requires approximately 559,200 configuration bits, which can be stored in compatible Platform Flash PROMs or other non-volatile memory devices.
Typical Applications for XC2S50-5TQG144C FPGA
Telecommunications Equipment
The XC2S50-5TQG144C excels in telecommunications applications including protocol converters, channel cards, access equipment, and wireless base station controllers. The combination of high-speed I/O and flexible logic enables implementation of custom communication interfaces.
Industrial Control Systems
For industrial automation, the device supports motor control algorithms, sensor interfaces, and real-time control loops. The multiple I/O standards allow direct interfacing with industrial sensors, actuators, and fieldbus networks.
Consumer Electronics
Cost-sensitive consumer applications benefit from the XC2S50-5TQG144C’s balance of performance and economy. Applications include video processing, audio systems, gaming peripherals, and smart home devices.
Embedded Computing
The FPGA serves as an ideal co-processor or peripheral controller in embedded systems, implementing custom interfaces, hardware accelerators, and glue logic that would otherwise require multiple discrete components.
XC2S50-5TQG144C Package Information
144-Pin TQFP Details
The device uses a 144-pin Thin Quad Flat Pack (TQFP) with 20mm × 20mm body dimensions and 0.5mm lead pitch. This surface-mount package offers excellent thermal characteristics and is compatible with standard pick-and-place assembly equipment.
Pin Categories
| Pin Type |
Quantity |
| User I/O |
92 |
| Global Clock Inputs |
4 |
| Power Supply (VCCINT) |
Multiple |
| Power Supply (VCCO) |
Multiple |
| Ground |
Multiple |
| Configuration |
Multiple |
| JTAG |
4 |
Development Tools and Software Support
Xilinx ISE Design Suite
The XC2S50-5TQG144C is fully supported by the Xilinx ISE Design Suite, which provides synthesis, implementation, and simulation tools. The software handles mapping, placement, and routing automatically, streamlining the design workflow from concept to configuration bitstream.
Design Entry Options
Engineers can enter designs using VHDL, Verilog, or schematic capture. The ISE tools support incremental design methodology, enabling rapid iteration and optimization of complex designs.
Part Number Decoding for XC2S50-5TQG144C
Understanding the part number helps identify the specific device variant:
- XC2S50: Spartan-II device with 50,000 system gates
- -5: Speed grade 5 (standard performance tier)
- TQ: 144-pin Thin Quad Flat Pack
- G: Pb-free (lead-free RoHS compliant) package
- 144: Pin count
- C: Commercial temperature range (0°C to +85°C)
Ordering and Availability
The AMD XC2S50-5TQG144C remains available through authorized distributors for legacy design support and repair applications. While AMD (formerly Xilinx) does not recommend this device for new designs, existing production requirements and replacement needs continue to be supported.
For comprehensive Xilinx FPGA product selection, current inventory, and competitive pricing, engineers can explore authorized distribution channels offering the complete Spartan-II family and newer FPGA generations.
Conclusion
The AMD XC2S50-5TQG144C Spartan-II FPGA delivers a proven combination of 50,000 system gates, 32 Kbits of Block RAM, four DLLs, and 92 user I/O pins in a cost-effective 144-pin TQFP package. With support for 16 I/O standards and operating frequencies up to 263 MHz, this FPGA continues to serve telecommunications, industrial, consumer, and embedded applications requiring flexible, reprogrammable logic solutions.
