XC3S400-5TQG144I

The Xilinx XC3S400-5TQG144I is a Field-Programmable Gate Array (FPGA) from the Spartan-3 family, engineered for high-volume, cost-sensitive consumer electronic applications. It builds upon previous Spartan generations by enhancing logic resources, internal RAM capacity, I/O count, and overall performance, incorporating features derived from the Virtex-II platform.

Key technical attributes include densities of up to 74,880 logic cells, support for up to 633 I/O pins, and a data transfer rate of 622+ Mb/s per I/O. The device supports a wide signal swing from 1.14V to 3.465V and offers Double Data Rate (DDR) support for DDR and DDR2 SDRAM up to 333 Mb/s. Logic resources are abundant, featuring shift register capability, wide fast multiplexers, fast look-ahead carry logic, and dedicated 18x18 multipliers. Memory capabilities include up to 1,872 Kbits of block RAM and up to 520 Kbits of distributed RAM. Advanced clock management functions are provided by up to four Digital Clock Managers (DCMs), enabling clock skew elimination, frequency synthesis, and high-resolution phase shifting.

This FPGA serves as a cost-effective alternative to mask-programmed ASICs, avoiding high initial costs and lengthy development cycles. Its programmability allows for in-field design upgrades without hardware replacement. The XC3S400-5TQG144I is suitable for applications such as broadband access, home networking, display/projection systems, and digital television equipment.

The component is housed in a QFP-144 package.