AMD XC2S100-5FGG256I

Overview

XC2S100-5FGG256I from AMD (formerly Xilinx) is a Spartan-II family FPGA with 100,000 system gates, 1728 logic cells, and 128 kB of total block RAM. It features a 5 ns CLB propagation delay, supports 3.3 V I/O, and is packaged in a 256-pin Fine-Pitch Ball Grid Array (FBGA). It is used in industrial control logic replacement and low-cost digital signal preprocessing.

For engineers reviewing the XC2S100-5FGG256I datasheet, pinout, applications, or equivalent options, key selection criteria include logic density, I/O voltage compatibility, timing grade (-5), and FBGA thermal/mechanical suitability for high-reliability embedded deployment.

Technical Context

The XC2S100-5FGG256I implements configurable logic blocks (CLBs) with four-input LUTs and flip-flops, distributed RAM, and dedicated carry logic. It supports SelectIO™ standards including LVTTL, LVCMOS, and PCI-compatible signaling.

Configuration is performed via serial PROM or boundary-scan (JTAG), and it includes internal global clock buffers with low skew. The -5 speed grade guarantees maximum operating frequency up to 200 MHz for critical paths under specified conditions.

Key Specifications

Pinout & Package

XC2S100-5FGG256I is housed in a 256-ball fine-pitch BGA (FGG256) with 168 user I/O pins, 8 dedicated configuration pins (e.g., INIT_B, PROGRAM_B, DONE), 4 global clock inputs, and power/ground balls distributed across the array.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FPGA-based logic implementation applications.

Compared with XC2S100-5FGG256I, XCV100-5BG256C offers higher performance at greater cost and power, while XC3S100E-4VQ100C trades package flexibility for reduced thermal robustness and lower production scalability.

Availability

XC2S100-5FGG256I is available at Aetrix Electronics and suitable for industrial motion control, automated test equipment, and medical imaging front-end designs requiring stable component supply and long-term obsolescence management.

Supply support for XC2S100-5FGG256I 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-II product support, documentation, and silicon supply through its programmable solutions group.

The Spartan-II family, including XC2S100-5FGG256I, was designed for cost-sensitive, high-volume embedded logic replacement and digital interface bridging in industrial and communications infrastructure.

FAQ

What is the core voltage requirement for XC2S100-5FGG256I?

The XC2S100-5FGG256I operates with a 2.5 V core supply (VCCINT) and 3.3 V I/O supply (VCCO). Both rails require separate regulation and local decoupling per Xilinx DS001 specification. Using incorrect core voltage will prevent configuration or cause functional failure. The XC2S100-5FGG256I does not support 1.8 V or 3.3 V core operation.

Is XC2S100-5FGG256I still in active production?

XC2S100-5FGG256I is not in active wafer fabrication but remains available through authorized channel inventory and Aetrix Electronics' extended-life program. AMD provides last-time-buy notices and migration guidance, and the XC2S100-5FGG256I is supported under lifetime buy agreements for qualified industrial customers.

Can XC2S100-5FGG256I be configured via JTAG only?

Yes, XC2S100-5FGG256I supports IEEE 1149.1 JTAG configuration as a primary method, enabling in-system programming without external PROM. However, master serial mode (using external PROM) is also supported. The XC2S100-5FGG256I requires correct INIT_B and PROGRAM_B sequencing regardless of configuration method.

Does XC2S100-5FGG256I support differential I/O standards like LVDS?

XC2S100-5FGG256I supports LVDS input-only in select I/O banks when properly terminated; it does not provide LVDS output drivers. External resistors and careful PCB layout are mandatory. The XC2S100-5FGG256I datasheet specifies bank-specific voltage and termination requirements - not all 168 I/O pins support this mode.

What is the maximum operating junction temperature for XC2S100-5FGG256I?

The XC2S100-5FGG256I has a maximum junction temperature rating of 100 °C for the Industrial (-I) grade. Thermal design must ensure θJA ≤ 35 °C/W under worst-case ambient and power dissipation. Exceeding this limit risks configuration loss or timing violation. The XC2S100-5FGG256I thermal characteristics are validated per Xilinx XTP001 test report.