XC3S400-4FT256I
XC3S400-4FT256I - 400K Gates Spartan-3 FPGA | Xilinx
The Xilinx XC3S400-4FT256I is a Spartan-3 field-programmable gate array providing 400,000 system gates, 8,064 logic cells, and 173 user I/Os in a 256-ball FTBGA package. The device operates from a 1.14 V to 1.26 V core supply, uses 90 nm process technology, and is specified for industrial-temperature operation from 0 °C to 85 °C. Its -4 speed grade supports operation up to 630 MHz according to the compared manufacturer-family specification in the provided web data.
A field-programmable gate array is a semiconductor device whose digital logic, interconnect, and I/O behavior are configured after fabrication. The Spartan-3 family belongs to the FPGA and programmable-logic hierarchy, providing configurable logic resources rather than a fixed instruction set. The XC3S400-4FT256I is intended for designs requiring substantial parallel logic, control, communications, or signal-processing functions while using a single highly integrated package.
The main device characteristics include 400,000 system gates, 8,064 logic cells, 173 user I/Os, a 256-ball FTBGA package, and a 1.2 V nominal core supply. The listed family comparison identifies 90 nm technology and a 630 MHz performance figure for the XC3S400-4FT256I. Its industrial temperature range and lead-free package information make it relevant to industrial control, communications equipment, and embedded systems, although current availability and lifecycle status should be confirmed before new production commitments.
The FTBGA package provides a dense connection arrangement for high-density programmable-logic designs. The 173 user I/Os can be assigned to digital interfaces, control signals, communications links, or mixed external circuitry, while the FPGA fabric allows parallel functions to be implemented with deterministic hardware timing. Unlike a microcontroller with a fixed peripheral architecture, the XC3S400-4FT256I allows system functions and interfaces to be defined during configuration, making it suitable for custom protocols, accelerators, and legacy system control logic.
Typical applications include industrial automation controllers, communications equipment, embedded control systems, test and measurement platforms, and signal-processing modules. In these systems, the FPGA can implement parallel interfaces, protocol conversion, timing and sequencing functions, and custom hardware processing. The 400,000-system-gate density is substantially larger than small CPLDs, supporting multi-module designs while keeping the implementation in one programmable device.
The primary design consideration is package-level integration. A 256-ball FTBGA requires careful PCB layout, via and escape-routing planning, thermal management, and assembly-process control. The core supply and I/O supply requirements, configuration interface, clocking, decoupling, and termination must follow the Spartan-3 device documentation. Because the XC3S400-4FT256I is associated with a discontinued-product notice in the provided AMD support result, engineers should preserve the exact MPN in legacy designs and evaluate any replacement against pinout, voltage, timing, and configuration compatibility.
This product record combines verified distributor and manufacturer-search information with practical design guidance for industrial FPGA implementations. It highlights the density, logic-cell count, I/O count, package, voltage, temperature range, and source links while clearly separating confirmed data from specifications that require confirmation from the manufacturer datasheet.
RFQ
İletişim