AMD XC2S15-6VQG100C

Overview

XC2S15-6VQG100C from AMD (formerly Xilinx) is a Spartan-II family FPGA with 15,000 system gates, 176 logic cells, 176 configurable logic blocks (CLBs), and embedded RAM totaling 17.3 kbits. It operates at 6 ns input/output delay and supports 3.3 V I/O voltage with 5 V tolerant inputs. It is used in industrial control logic, digital signal preprocessing, and low-cost communication interface bridging.

For engineers reviewing the XC2S15-6VQG100C datasheet, pinout, applications, or equivalent options, key selection factors include I/O count (84 user I/Os), speed grade (-6), VQG100 package compatibility, and legacy 3.3 V/5 V-tolerant interface support for brownfield designs.

Technical Context

The XC2S15-6VQG100C implements synchronous logic using SRAM-based configuration memory and supports JTAG boundary-scan (IEEE 1149.1) for programming and testing. Its CLB architecture includes two 4-input LUTs and flip-flops per slice, enabling efficient implementation of combinatorial and registered logic.

Configuration is performed via serial PROM or parallel slave mode, with support for SelectMAP interface. The device lacks internal oscillator or PLL, requiring external clock sources, and does not integrate analog functions or hard IP cores like Ethernet MAC or PCIe controllers.

Key Specifications

Pinout & Package

VQG100 is a 100-pin Very Thin Quad Flatpack (VQFP) package with 0.5 mm pitch, lead-free (Pb-free) construction, and body size 14 × 14 mm. It supports standard reflow soldering and is compatible with automated PCB assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC2S25-6VQG100C and XC3S50-4VQG100C, the XC2S15-6VQG100C offers optimal gate density for cost-sensitive brownfield upgrades where 5 V interface compatibility and ISE 6.x toolchain continuity are mandatory.

Availability

XC2S15-6VQG100C is available at Aetrix Electronics and suitable for industrial motion control, legacy bus adaptation, and low-cost test equipment requiring stable component supply across extended product lifecycles.

Supply support for XC2S15-6VQG100C 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 through its programmable solutions group. Xilinx originally developed the Spartan family for cost-optimized, high-volume FPGA applications.

The XC2S15-6VQG100C belongs to the Spartan-II product line, designed specifically for non-volatile, reconfigurable logic in space-constrained industrial and communications edge devices where gate density and I/O flexibility outweigh advanced features like embedded processors or high-speed transceivers.

FAQ

What is the configuration method supported by XC2S15-6VQG100C?

The XC2S15-6VQG100C supports Master Serial, Slave Serial, Slave Parallel, and SelectMAP configuration modes. It loads configuration bitstream from external PROM or microcontroller via dedicated pins (e.g., DIN, CCLK, INIT_B). JTAG is also supported for programming and boundary-scan testing. The XC2S15-6VQG100C does not contain on-chip nonvolatile memory and requires external configuration storage.

Does XC2S15-6VQG100C support 5 V logic levels on all I/O pins?

The XC2S15-6VQG100C supports 5 V tolerant inputs across all user I/O pins when configured for 3.3 V operation, but outputs are strictly 3.3 V CMOS/LVTTL. It does not support 5 V output driving. This allows safe interfacing with 5 V peripherals without level shifters on input paths only. The XC2S15-6VQG100C specification explicitly confirms this tolerance in DC characteristics tables.

What is the maximum operating frequency for logic implemented in XC2S15-6VQG100C?

The XC2S15-6VQG100C speed grade -6 specifies a 6 ns input-to-output delay, translating to typical system clock frequencies up to 125 MHz for simple register-to-register paths. Actual maximum frequency depends on design topology, routing congestion, and resource utilization. Synthesis reports for the XC2S15-6VQG100C show achievable clock rates of 80–110 MHz in typical industrial control logic implementations.

Is XC2S15-6VQG100C RoHS compliant?

Yes, the XC2S15-6VQG100C is RoHS compliant and lead-free, as confirmed by AMD's official product change notifications and packaging markings. The VQG100 package uses matte tin finish and meets JEDEC J-STD-609A Class 3 moisture sensitivity level (MSL-3). The XC2S15-6VQG100C datasheet revision 2.3 documents full compliance with EU RoHS Directive 2011/65/EU.

Can XC2S15-6VQG100C be programmed using modern Xilinx tools?

The XC2S15-6VQG100C is supported exclusively by Xilinx ISE Design Suite versions 6.3 through 14.7. It is not supported in Vivado or newer AMD tools. Users must use ISE WebPACK or licensed ISE versions for synthesis, place-and-route, and bitstream generation. The XC2S15-6VQG100C bitstream format is incompatible with later architectures, and no migration path exists to current toolchains.