AMD XC6SLX25-3FGG484C

Overview

XC6SLX25-3FGG484C from AMD (formerly Xilinx) is a Spartan-6 FPGA with 24,051 logic cells, 1.8 V core voltage, -3 speed grade, and 484-pin Fine-Pitch Ball Grid Array (FBGA) packaging. It integrates 92 DSP48A1 slices, 1,824 Kbits of block RAM, and supports LVDS, SSTL, and HSTL I/O standards for high-speed interface design in industrial control systems.

For engineers reviewing the XC6SLX25-3FGG484C datasheet, pinout, applications, or equivalent options, key selection criteria include logic density, I/O bank configuration, DCI support, clock management resources (DCM and PLL), and industrial temperature range compliance.

Technical Context

The XC6SLX25-3FGG484C implements a configurable logic fabric based on 6-input LUTs and flip-flops, with dedicated carry logic for arithmetic functions. It includes two Digital Clock Managers (DCMs) and one Phase-Locked Loop (PLL) for clock synthesis, multiplication, phase shifting, and duty-cycle correction across multiple output clocks.

I/O banks are organized into eight groups supporting independent voltage domains (1.2 V to 3.3 V), with SelectIO™ technology enabling source-synchronous interfaces like DDR2 SDRAM and PCI Express Gen1. On-chip termination (DCI) is available per pin group, reducing external resistor count.

Key Specifications

Pinout & Package

Package: 484-ball Fine-Pitch BGA (FGG), 23 mm × 23 mm, 1.0 mm ball pitch, RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC6SLX25-3FGG484C, the XC6SLX45-3FGG484C offers scalable logic density in identical packaging, while the XC7S25-2CSGA225C provides architectural modernization at the cost of board redesign - making the former ideal for capacity-limited extensions and the latter suitable for next-generation low-power platforms.

Availability

XC6SLX25-3FGG484C is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, and avionics subsystems requiring stable component supply over extended production lifecycles.

Supply support for XC6SLX25-3FGG484C 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 develops adaptive computing solutions including FPGAs, ACAPs, and software tools for heterogeneous compute acceleration.

The Spartan-6 family was designed for cost-sensitive, high-volume applications requiring balanced logic density, I/O flexibility, and low-power operation - especially in industrial control, video processing, and communications infrastructure.

FAQ

What is the configuration mode supported by XC6SLX25-3FGG484C?

The XC6SLX25-3FGG484C supports Master Serial, Slave Serial, Slave Parallel, and JTAG configuration modes. It uses a 4-bit mode pin setting (M2:M0) to select the interface, with Master Serial being the most common for single-device SPI flash boot. Configuration occurs via dedicated CCLK, DIN, and INIT_B pins, and the bitstream is loaded into SRAM-based CLBs upon power-up or PROGRAM_B assertion.

Does XC6SLX25-3FGG484C support DDR2 SDRAM interfaces?

Yes, XC6SLX25-3FGG484C supports DDR2 SDRAM interfaces through its SelectIO™ technology and IODELAY2 primitives. It provides source-synchronous capture using IDELAY and ISERDES blocks, with DQS-aligned sampling and programmable input delay tuning. The device meets JEDEC DDR2-800 timing requirements when used with proper PCB layout and termination per bank.

What power supplies are required for XC6SLX25-3FGG484C operation?

XC6SLX25-3FGG484C requires three primary supplies: VCCINT = 1.2 V ±3% for core logic, VCCAUX = 1.8 V ±3% for configuration and clock circuitry, and VCCO = 1.2–3.3 V (per I/O bank) for output drivers. Each supply must be independently decoupled with low-ESR ceramic capacitors placed near respective power balls, and sequencing (VCCAUX before VCCINT) is recommended to avoid configuration errors.

Is XC6SLX25-3FGG484C qualified for industrial temperature range?

Yes, the 'C' suffix in XC6SLX25-3FGG484C denotes commercial temperature grade (0 °C to +85 °C), which is widely deployed in industrial environments with adequate thermal management. While not rated for extended -40 °C to +100 °C operation, it has been validated in fan-cooled PLC backplanes and sealed enclosures meeting IPC-610 Class 2 reliability standards.

Can XC6SLX25-3FGG484C implement PCIe Gen1 endpoints?

No, XC6SLX25-3FGG484C does not include native PCI Express hard IP blocks. It can implement PCIe Gen1 endpoints using soft-core solutions (e.g., Xilinx LogiCORE IP PCIe v1.8) with significant logic resource consumption - typically requiring >15K LUTs and limiting bandwidth to ~250 MB/s. For production PCIe designs, Xilinx recommends Spartan-6 LX45 or Artix-7 devices with dedicated GT transceivers.