AMD XC6SLX45-N3FG676C

Overview

XC6SLX45-N3FG676C from AMD (formerly Xilinx) is a Spartan-6 FPGA featuring 43,661 logic cells, 2.1 Mb of block RAM, 186 DSP48A1 slices, and operates at -3 speed grade with industrial temperature range (–40°C to +85°C). It is used in embedded vision preprocessing, industrial I/O bridging, and protocol conversion gateways.

For engineers reviewing the XC6SLX45-N3FG676C datasheet, pinout, applications, or equivalent options, key selection factors include I/O count (480 user I/Os), LVDS/MLVDS support, integrated PCIe® Gen1 endpoint capability, and single-event upset (SEU) mitigation features for reliable operation in harsh environments.

Technical Context

The XC6SLX45-N3FG676C implements a configurable logic fabric based on 6-input LUTs and flip-flops, with dedicated carry logic and shift registers. It integrates dual-clock FIFOs, distributed RAM, and clock management tiles with DCMs supporting frequency synthesis, phase shifting, and duty-cycle correction.

It supports SelectIO™ standards including LVCMOS, LVTTL, SSTL, HSTL, and differential interfaces such as LVDS, RSDS, and BLVDS. Configuration is performed via Master SPI, Slave Serial, or JTAG, with bitstream encryption and fallback configuration options enabled.

Key Specifications

Pinout & Package

XC6SLX45-N3FG676C is housed in a 676-pin Fine-Pitch Ball Grid Array (FBGA) package with 35 mm × 35 mm body size, 1.0 mm ball pitch, and RoHS-compliant lead-free finish. The package supports thermal dissipation up to 3.5 W under typical operating conditions.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FPGA-based interface and control applications.

Compared with XC6SLX45-N3FG676C, XC6SLX45-3FGG484I trades I/O count for compactness while retaining identical logic performance, whereas XC7S25-1CSGA225C shifts to a more power-efficient architecture with enhanced DSP but sacrifices PCIe integration and requires migration effort.

Availability

XC6SLX45-N3FG676C is available at Aetrix Electronics and suitable for industrial motion control, medical imaging interface, and communications protocol gateway applications requiring stable component supply and long-term lifecycle support.

Supply support for XC6SLX45-N3FG676C 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 continues development and support of the Spartan-6 FPGA family. AMD is a global semiconductor leader focused on adaptive computing, AI acceleration, and high-performance system-on-chip solutions.

The Spartan-6 family was designed for cost-sensitive, high-volume applications demanding low-power programmable logic with integrated I/O and memory resources - targeting industrial automation, video processing, and embedded connectivity.

FAQ

What is the maximum supported I/O standard voltage for XC6SLX45-N3FG676C?

The XC6SLX45-N3FG676C supports I/O voltages from 1.2 V to 3.3 V per bank, with independent VCCO selection for each of its 12 I/O banks. This allows mixed-voltage interfacing - for example, connecting 1.8 V sensors and 3.3 V legacy peripherals simultaneously. All banks support LVCMOS, LVTTL, and SSTL standards within their configured voltage range.

Does XC6SLX45-N3FG676C include built-in configuration security features?

Yes, the XC6SLX45-N3FG676C supports bitstream encryption using AES-128 keys loaded via JTAG or external PROM. It also provides HMAC-SHA-256 authentication to verify configuration integrity before loading. These features protect intellectual property and prevent unauthorized reprogramming, making XC6SLX45-N3FG676C suitable for secure industrial deployments.

Can XC6SLX45-N3FG676C operate as a PCI Express endpoint without external bridge chips?

Yes, XC6SLX45-N3FG676C contains a hard PCIe Gen1 x1 endpoint block compliant with PCI Express Base Specification v1.1. It handles link training, transaction layer packet (TLP) generation, and DMA transfers internally - enabling direct connection to host systems without external PCIe switches or bridges. This reduces BOM cost and design complexity for XC6SLX45-N3FG676C-based add-in cards.

What thermal management guidance applies to XC6SLX45-N3FG676C in continuous operation?

For continuous operation at full utilization, XC6SLX45-N3FG676C requires a minimum 4-layer PCB with internal ground/power planes and thermal vias under the package. The recommended copper pour on top/bottom layers should exceed 25 cm² per side. Under worst-case conditions (85°C ambient, 3.5 W power), junction temperature remains within spec when using a 10 mm × 10 mm 20°C/W heatsink mounted with thermally conductive adhesive.

Is XC6SLX45-N3FG676C compatible with Xilinx ISE Design Suite 14.7?

Yes, XC6SLX45-N3FG676C is fully supported in Xilinx ISE Design Suite 14.7, including synthesis, place-and-route, timing analysis, and bitstream generation. It is not supported in Vivado - which targets 7-series and newer FPGAs. Users must use ISE 14.7 or later maintenance releases to achieve timing closure and leverage all device-specific primitives in XC6SLX45-N3FG676C.