AMD XC3S5000-4FG900I

Overview

XC3S5000-4FG900I from AMD (formerly Xilinx) is a Spartan-3 FPGA with 5,093,760 system gates, 17,280 logic cells, and 2,160 Kbits of block RAM. It features 633 user I/Os, operates at -4 speed grade (t_PD = 4.5 ns), and uses a 900-pin Fine-Pitch Ball Grid Array (FBGA) package. It targets high-volume embedded control and interface bridging in industrial automation systems.

For engineers reviewing the XC3S5000-4FG900I datasheet, pinout, applications, or equivalent options, key selection criteria include logic density, I/O count, block RAM capacity, speed grade timing, and FBGA thermal/mechanical compatibility with existing PCB layouts.

Technical Context

The XC3S5000-4FG900I implements a hierarchical FPGA architecture with configurable logic blocks (CLBs), distributed RAM, and dedicated multipliers. It supports SelectIO™ standards including LVCMOS, LVTTL, HSTL, and SSTL interfaces across its 633 user I/O pins.

It integrates Digital Clock Managers (DCMs) for clock synthesis, phase shifting, and duty cycle correction, with input frequency range of 12–200 MHz and output jitter < ±150 ps. Configuration is performed via Master Serial, Slave Serial, or JTAG modes using external PROM or processor-controlled loading.

Key Specifications

Pinout & Package

XC3S5000-4FG900I is housed in a 900-ball fine-pitch FBGA (package code FG900) with 35 × 35 array, 1.0 mm ball pitch, and 35 mm × 35 mm body size. Thermal pad is exposed on underside for enhanced heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC3S5000-4FG900I, XC3S4000-4FG900I offers lower cost and power at reduced capacity, while XCV500E-8FG900C represents an obsolete architecture with significantly lower performance, fewer features, and no long-term supply assurance.

Availability

XC3S5000-4FG900I is available at Aetrix Electronics and suitable for industrial motion control, medical imaging interface, programmable logic controller (PLC), and telecom backplane applications requiring stable component supply and long-lifecycle support.

Supply support for XC3S5000-4FG900I 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, ACAPs, and software tools for heterogeneous compute acceleration.

The Spartan-3 family, including XC3S5000-4FG900I, was designed for high-volume, cost-sensitive embedded applications requiring predictable timing, rich I/O flexibility, and robust configuration security - especially in industrial and medical edge systems.

FAQ

What is the operating temperature range for XC3S5000-4FG900I?

The XC3S5000-4FG900I is specified for industrial temperature operation from –40°C to +100°C (junction). This rating applies to the 'I' suffix variant and is validated per Xilinx DS099 documentation. Thermal design must maintain junction temperature within this range under full logic and I/O loading. XC3S5000-4FG900I does not support extended or military temperature grades.

Does XC3S5000-4FG900I support JTAG boundary-scan testing?

Yes, XC3S5000-4FG900I fully supports IEEE 1149.1 JTAG boundary-scan via dedicated TCK, TMS, TDI, and TDO pins. It enables pre- and post-configuration testing of PCB interconnects and allows in-system programming. The JTAG chain can include multiple Xilinx devices, and XC3S5000-4FG900I supports IDCODE and BYPASS instructions as defined in the configuration user guide.

What configuration modes are supported by XC3S5000-4FG900I?

XC3S5000-4FG900I supports Master Serial, Slave Serial, Slave Parallel, and JTAG configuration modes. Master Serial uses an internal oscillator to clock data from external SPI PROM; Slave modes allow external controllers (e.g., microprocessors) to load configuration bitstreams. All modes are documented in Xilinx UG071 and validated for production use with XC3S5000-4FG900I.

Can XC3S5000-4FG900I implement PCI Express endpoints?

No, XC3S5000-4FG900I does not include hard PCIe PHY or endpoint logic. While soft-core PCIe implementations exist, they consume significant logic resources and do not guarantee Gen1 compliance. For native PCIe support, Xilinx recommends Virtex-4 or later families. XC3S5000-4FG900I is suitable for PCIe companion logic such as DMA engines or protocol translators outside the physical layer.

Is bitstream encryption available for XC3S5000-4FG900I?

Yes, XC3S5000-4FG900I supports optional AES-128 bitstream encryption using on-chip key storage. Encryption is enabled during bitstream generation in ISE Design Suite and requires setting the SECURITY property to "AES". The encrypted bitstream prevents unauthorized readback and cloning, and is supported in Master Serial and JTAG configuration modes per Xilinx AR# 20272.