AMD XC6SLX9-L1FT256I

Overview

XC6SLX9-L1FT256I 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 in a 256-pin FTBGA package. It targets low-cost, low-power embedded control and interface bridging applications.

For engineers reviewing the XC6SLX9-L1FT256I datasheet, pinout, applications, or equivalent options, key selection criteria include I/O voltage flexibility (1.2 V to 3.3 V), -1 speed grade timing performance, industrial temperature range (-40°C to +100°C), and integrated clock management via DCM blocks.

Technical Context

The XC6SLX9-L1FT256I implements a configurable logic fabric based on 6-input LUTs and flip-flops, with dedicated arithmetic carry logic and distributed RAM. It integrates two Digital Clock Managers (DCMs) for clock synthesis, phase shifting, and frequency multiplication/division.

Configuration is performed via Master Serial mode using an external SPI PROM or JTAG boundary-scan. The device supports partial reconfiguration and includes built-in system monitor functionality for on-chip temperature and supply voltage measurement.

Key Specifications

Pinout & Package

XC6SLX9-L1FT256I is housed in a 256-ball Fine-Pitch Thin Ball Grid Array (FTBGA) package with 1.0 mm ball pitch and 17×17 array configuration. Thermal pad exposed on underside improves power dissipation for sustained logic activity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC6SLX9-L1FT256I, the XC6SLX9-2TQG144C trades industrial reliability and I/O scalability for simpler assembly, while the XC7S6-1CSGA225C offers architectural upgrades at the cost of increased power complexity and toolchain migration effort.

Availability

XC6SLX9-L1FT256I is available at Aetrix Electronics and suitable for industrial automation, automotive diagnostics, and medical sensor hub applications requiring stable component supply over extended production lifecycles.

Supply support for XC6SLX9-L1FT256I 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, Artix, Kintex, and Virtex FPGA families for adaptive computing solutions.

The Spartan-6 family, including XC6SLX9-L1FT256I, was designed for cost-sensitive, low-power embedded control, bridging, and interface consolidation in industrial and automotive systems.

FAQ

What is the maximum supported I/O standard voltage for XC6SLX9-L1FT256I?

XC6SLX9-L1FT256I supports I/O voltages from 1.2 V to 3.3 V across its 18 selectable I/O banks. Each bank operates independently, allowing mixed-voltage interfaces such as 3.3 V microcontrollers communicating with 1.8 V sensors. VCCO per bank must match the selected I/O standard's required voltage, and all pins within a bank share the same VCCO supply.

Does XC6SLX9-L1FT256I include on-chip clock generation resources?

Yes, XC6SLX9-L1FT256I integrates two Digital Clock Managers (DCMs). Each DCM provides clock frequency synthesis, phase shifting, duty cycle correction, and input clock deskewing. These resources eliminate the need for external clock ICs in many timing-critical applications, including DDR2 memory interfaces and synchronized data acquisition systems.

Can XC6SLX9-L1FT256I be configured via JTAG only?

No, XC6SLX9-L1FT256I supports multiple configuration modes including JTAG, Master Serial (SPI PROM), Slave Serial, and Slave SelectMAP. JTAG is used primarily for debugging and programming during development, while Master Serial is typical for production deployment. Mode selection is controlled by M0–M2 pins at power-up.

What is the purpose of the VCCAUX supply pin on XC6SLX9-L1FT256I?

VCCAUX supplies power to internal analog circuitry including the Digital Clock Managers (DCMs), configuration logic, and JTAG controller. It must be regulated at 3.3 V ±5% and decoupled with low-ESR capacitors near the package. Failure to maintain stable VCCAUX can cause configuration failure or clock instability, even if VCCINT and VCCO are within specification.

Is XC6SLX9-L1FT256I qualified for industrial temperature operation?

Yes, XC6SLX9-L1FT256I is rated for operation from -40°C to +100°C and is marked with the "I" suffix indicating industrial temperature qualification. This rating applies to all logic, I/O, and embedded resources including DCMs and Block RAM, with full timing specifications guaranteed across the range without derating.