AMD XC6SLX45-N3FGG484C

Overview

XC6SLX45-N3FGG484C from AMD (formerly Xilinx) is a Spartan-6 FPGA featuring 43,661 logic cells, 2.1 Mb of block RAM, and 186 DSP48A1 slices. It supports LVDS, SSTL, HSTL, and LVCMOS I/O standards with up to 348 user I/Os in the FGG484 package. It is used in industrial control logic, video interface bridging, and embedded vision preprocessing.

For engineers reviewing the XC6SLX45-N3FGG484C datasheet, pinout, applications, or equivalent options, key selection criteria include I/O voltage flexibility, embedded memory depth, DSP slice count, and -3 speed grade timing performance for deterministic logic implementation.

Technical Context

The XC6SLX45-N3FGG484C implements a configurable logic fabric based on 6-input LUTs and flip-flops, with dedicated carry logic and shift registers. It integrates dual-port block RAM (18 Kb per block), clock management tiles (CMT) with DCM and PLL, and SelectIO™ technology supporting multi-standard I/O with programmable drive strength and slew rate.

Configuration is performed via Master Serial, Slave Serial, or JTAG modes using external SPI flash or processor-controlled interfaces. The device supports partial reconfiguration and includes built-in boundary-scan (IEEE 1149.1) and internal logic analyzer (ChipScope Pro) support.

Key Specifications

Pinout & Package

The XC6SLX45-N3FGG484C is housed in a 484-pin Fine-Pitch Ball Grid Array (FBGA) package with 23×23 array, 1.0 mm pitch, and 27 mm × 27 mm body size. Thermal pad exposed on underside for enhanced heat dissipation in industrial environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC6SLX45-3FGG484I, the XC6SLX45-N3FGG484C offers identical logic and I/O performance at lower thermal qualification cost; versus XC7S25-1CSGA225C, it delivers 87% more logic cells and 248 additional I/Os-critical for high-bandwidth parallel interfaces-but lacks integrated analog or PCIe blocks.

Availability

XC6SLX45-N3FGG484C is available at Aetrix Electronics and suitable for industrial motion control, embedded vision preprocessing, and video interface bridging requiring stable component supply across multi-year production cycles.

Supply support for XC6SLX45-N3FGG484C 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 platforms including FPGAs, adaptive SoCs, and AI engines for heterogeneous workloads.

The Spartan-6 family-including XC6SLX45-N3FGG484C-was designed for cost-sensitive, high-volume applications demanding reliable logic density, flexible I/O, and low-power operation in industrial and video systems.

FAQ

What is the maximum supported I/O standard voltage for XC6SLX45-N3FGG484C?

The XC6SLX45-N3FGG484C supports I/O standards ranging from 1.2 V to 3.3 V, including LVCMOS, LVTTL, SSTL, HSTL, and LVDS. Each of its 12 I/O banks can be independently configured for different voltage levels, enabling mixed-voltage interface design without external level shifters. This capability is confirmed in the Spartan-6 FPGA SelectIO Resources User Guide (UG381 v1.12).

Does XC6SLX45-N3FGG484C support partial reconfiguration?

Yes, the XC6SLX45-N3FGG484C supports partial reconfiguration through Xilinx ISE Design Suite tools and associated bitstream generation flow. This allows dynamic replacement of logic modules while the rest of the design remains operational-enabling field-upgradable functionality in systems like adaptive test equipment or multi-mode communication gateways. Configuration memory partitioning and routing isolation are hardware-supported features of the Spartan-6 architecture.

What is the purpose of the VCCAUX pin on XC6SLX45-N3FGG484C?

The VCCAUX pin supplies 1.8 V to auxiliary circuitry including configuration logic, JTAG TAP controller, and clock management tiles (DCM/PLL). Stable, low-noise regulation of VCCAUX is required for reliable configuration and clock synthesis. Decoupling capacitors must be placed within 10 mm of the VCCAUX pins, as specified in the Spartan-6 FPGA Packaging and Pinout Product Specification (DS162 v3.3).

Can XC6SLX45-N3FGG484C interface directly with DDR2 SDRAM?

Yes, the XC6SLX45-N3FGG484C supports DDR2 SDRAM interfaces using its SSTL-18 Class I and II I/O standards and dedicated source-synchronous capture logic. The device provides programmable output drive strength and input termination for impedance matching, and timing closure is achievable up to 400 Mbps data rates using the MIG (Memory Interface Generator) tool in ISE. Verified reference designs exist for 16-bit and 32-bit DDR2 interfaces.

What configuration modes are supported by XC6SLX45-N3FGG484C?

The XC6SLX45-N3FGG484C supports Master Serial (via SPI flash), Slave Serial (processor-controlled), and JTAG modes. In Master Serial mode, the FPGA initiates configuration automatically after power-up; Slave Serial allows host processor control over bitstream loading; JTAG is used for debugging and programming during development. All modes use the same configuration pins (INIT_B, PROGRAM_B, CCLK, DIN), with mode selected by MODE pins during power-on reset.