AMD XC2S100-6PQG208C

Overview

XC2S100-6PQG208C from AMD (formerly Xilinx) is a Spartan-II family FPGA with 100,000 system gates, 1728 logic cells, and 128 I/O pins in a 208-pin PQFP package. It features 48 KB of block RAM, operates at -6 speed grade (5.5 ns CLB delay), and supports 3.3 V I/O with 2.5 V core voltage. It is used in industrial control logic and low-cost communication interface bridging.

For engineers reviewing the XC2S100-6PQG208C datasheet, pinout, applications, or equivalent options, key selection criteria include logic density, I/O count, speed grade timing closure, embedded RAM capacity, and QFP thermal performance for cost-sensitive reflow assembly.

Technical Context

The XC2S100-6PQG208C implements configurable logic blocks (CLBs) with four-input LUTs and flip-flops, distributed RAM per CLB, and dedicated carry logic for arithmetic. It includes eight global clock buffers and supports internal clock division via DLL-based clock management.

I/O banks support selectable standards including LVTTL, LVCMOS33, and PCI, with programmable slew rate and drive strength per pin group. Configuration is performed via serial PROM or JTAG boundary-scan interface using IEEE 1149.1 compliant TAP controller.

Key Specifications

Pinout & Package

XC2S100-6PQG208C uses a 208-pin Plastic Quad Flat Pack (PQFP) with 0.5 mm pitch, 28 × 28 mm body size, and exposed thermal pad. Package meets JEDEC MS-026 standard and supports standard IR-reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC2S100-5PQ208C, the XC2S100-6PQG208C delivers tighter timing closure for high-frequency control loops; versus XC3S100E-4PQ208C, it retains legacy toolchain compatibility and QFP thermal profile but lacks advanced clocking features and lower core voltage.

Availability

XC2S100-6PQG208C is available at Aetrix Electronics and suitable for industrial motion control, legacy bus interface bridging, and low-cost video timing controller applications requiring stable component supply and long-term obsolescence management.

Supply support for XC2S100-6PQG208C 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 now oversees the Spartan FPGA product lines. Xilinx originally developed these devices for cost-optimized, high-volume logic replacement applications.

The Spartan-II family, including XC2S100-6PQG208C, was designed for non-volatile, reprogrammable logic in space-constrained industrial and communications equipment where ASIC NRE costs were prohibitive.

FAQ

What is the core voltage requirement for XC2S100-6PQG208C?

The XC2S100-6PQG208C requires a regulated 2.5 V ± 0.1 V core supply (VCCINT). This voltage powers the FPGA's logic fabric and interconnect; using 3.3 V or unregulated input will cause immediate functional failure or permanent damage. Decoupling with 0.1 µF ceramic and 4.7 µF tantalum capacitors per VCCINT pin is mandatory per Xilinx DS002 specification.

Does XC2S100-6PQG208C support JTAG configuration?

Yes, XC2S100-6PQG208C fully supports IEEE 1149.1 JTAG boundary-scan configuration via TCK, TMS, TDI, and TDO pins. This enables in-system programming, debugging, and verification without requiring external PROM. The JTAG TAP controller is integrated and compliant with Xilinx configuration modes including JTAG download and boundary-scan testing.

How many block RAM units does XC2S100-6PQG208C contain?

The XC2S100-6PQG208C contains 24 block RAM units, each 2 Kbits in size, totaling 48 KB. These are true dual-port RAMs with independent read and write addresses per port, supporting simultaneous access for applications like FIFOs, data buffering, and lookup tables without external memory.

Can XC2S100-6PQG208C operate with 3.3 V I/O standards?

Yes, XC2S100-6PQG208C supports 3.3 V I/O standards including LVTTL and LVCMOS33 across its 128 user I/O pins. Each I/O bank is independently configurable for voltage and standard, allowing mixed-signaling on a single device. No external level shifters are needed when interfacing with 3.3 V microcontrollers or transceivers.

What is the maximum guaranteed system clock frequency for XC2S100-6PQG208C?

The XC2S100-6PQG208C is rated for a maximum system clock frequency of 125 MHz under worst-case conditions (commercial temperature range, -6 speed grade). This is derived from its 5.5 ns CLB propagation delay and validated timing analysis in Xilinx ISE software v14.7; actual achievable frequency depends on design topology and place-and-route results.