AMD XC6SLX9-L1FTG256C

Overview

XC6SLX9-L1FTG256C from AMD (formerly Xilinx) is a Spartan-6 FPGA with 9,152 logic cells, 576 Kbits of block RAM, and 18 I/O banks supporting LVCMOS/LVTTL/SSTL standards. It features a 1.2 V core voltage, -1 speed grade, and 256-pin FTBGA package, deployed in industrial control interfaces and embedded vision preprocessing pipelines.

For engineers reviewing the XC6SLX9-L1FTG256C datasheet, pinout, applications, or equivalent options, key selection criteria include logic density, I/O voltage flexibility, block RAM depth, and industrial temperature range support.

Technical Context

The XC6SLX9-L1FTG256C implements a hierarchical FPGA architecture with six-input LUTs, dedicated carry logic, and integrated DSP48A1 slices for arithmetic acceleration. It supports configuration via SPIx4, JTAG, or Master SelectMAP mode with internal startup sequence control.

It includes 24 multipliers (18×18), 220 user I/Os with programmable slew rate and drive strength, and supports differential standards including LVDS and RSDS at up to 622 Mbps per pair. The device operates across -40°C to +100°C junction temperature.

Key Specifications

Pinout & Package

XC6SLX9-L1FTG256C uses a 256-pin Fine-Pitch Thin Quad Flatpack Ball Grid Array (FTBGA) with 1.0 mm pitch, 17 × 17 array, and thermal pad. Package dimensions are 17 mm × 17 mm × 1.55 mm (height).

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC6SLX9-L1FTG256C, the -2 variant trades higher static power for improved timing headroom, while the LX16 variant offers scalable logic density without PCB redesign-both retain full toolchain compatibility in Vivado ISE 14.7.

Availability

XC6SLX9-L1FTG256C is available at Aetrix Electronics and suitable for industrial control interfaces, embedded vision preprocessing, and medical diagnostic equipment requiring stable component supply over extended product lifecycles.

Supply support for XC6SLX9-L1FTG256C 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 of adaptive computing platforms. Xilinx pioneered FPGA technology with emphasis on programmable logic, high-speed I/O, and domain-specific acceleration.

The Spartan-6 family, including XC6SLX9-L1FTG256C, was designed for cost-sensitive, high-volume applications demanding reliable I/O interfacing, moderate logic density, and industrial temperature resilience.

FAQ

What is the maximum supported memory interface speed for XC6SLX9-L1FTG256C?

The XC6SLX9-L1FTG256C supports DDR2/DDR3 memory interfaces up to 800 Mbps data rate (400 MHz clock) under -1 speed grade conditions. This is validated using Xilinx MIG v3.7 IP core with specific PCB stackup and termination guidelines. XC6SLX9-L1FTG256C does not support LPDDR or GDDR standards.

Does XC6SLX9-L1FTG256C include built-in configuration memory?

No, XC6SLX9-L1FTG256C lacks on-chip nonvolatile configuration memory. It requires external SPI flash (e.g., Micron N25Q series) for master SPI configuration mode. Configuration bitstream is loaded at power-up via dedicated CCLK, DIN, and CS_B pins. XC6SLX9-L1FTG256C supports fallback and multi-boot from dual flash images.

Can XC6SLX9-L1FTG256C operate with a single 1.2 V supply?

No, XC6SLX9-L1FTG256C requires three distinct supply rails: 1.2 V core (VCCINT), 1.8 V auxiliary (VCCAUX), and programmable I/O voltage (VCCO). Each rail has separate decoupling requirements. Using only 1.2 V will prevent configuration and cause functional failure. XC6SLX9-L1FTG256C datasheet specifies minimum VCCAUX = 1.71 V.

Is XC6SLX9-L1FTG256C compatible with Xilinx ISE Design Suite 14.7?

Yes, XC6SLX9-L1FTG256C 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, as Spartan-6 devices were discontinued from Vivado toolchain after version 2013.4. XC6SLX9-L1FTG256C requires ISE 14.7 Service Pack 5 or later for full silicon revision compatibility.

What thermal management guidance applies to XC6SLX9-L1FTG256C in sealed enclosures?

XC6SLX9-L1FTG256C requires a maximum junction temperature of +100°C. In sealed industrial enclosures, a 4-layer PCB with 2 oz copper, thermal vias under the thermal pad, and ≥20 cm² exposed copper pour reduces θJA by ~12°C/W. Forced air is recommended above 1.5 W total power dissipation. XC6SLX9-L1FTG256C thermal pad must be soldered to solid ground plane per Xilinx UG381.