AMD XC3S1000-4FG456I

Overview

XC3S1000-4FG456I from AMD (formerly Xilinx) is a Spartan-3 FPGA with 1,000,000 system gates, 21,952 logic cells, and 173 I/O pins in a 456-pin Fine-Pitch Ball Grid Array (FBGA) package. It operates at -4 speed grade (tPD = 4.5 ns), supports SelectIO™ standards up to 622 Mbps, and targets high-volume embedded control and interface bridging applications.

For engineers reviewing the XC3S1000-4FG456I datasheet, pinout, applications, or equivalent options, key selection criteria include logic density, I/O voltage flexibility (1.2 V to 3.3 V), distributed RAM capacity (737,280 bits), and support for DDR/DDR2 SDRAM interfaces in cost-sensitive industrial designs.

Technical Context

The XC3S1000-4FG456I implements a hierarchical FPGA architecture with configurable logic blocks (CLBs), dedicated multipliers, block RAMs, and digital clock managers (DCMs). It integrates eight DCMs for phase-matched clock synthesis and jitter reduction across multiple clock domains.

It supports IEEE 1149.1 JTAG boundary-scan testing and configuration via Master Serial, Slave Serial, or SelectMAP modes using external PROM or processor-controlled loading. Configuration bitstream is stored in on-chip SRAM and loaded at power-up.

Key Specifications

Pinout & Package

Package: 456-ball Fine-Pitch BGA (FG456), 23 × 23 mm body, 1.0 mm ball pitch, RoHS-compliant lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC3S1000-4FG456I, the XC3S1500-4FG456I offers headroom for logic expansion within identical mechanical and thermal constraints, while the XC3S500E-4FG320C reduces footprint and cost at the expense of logic capacity and extended temperature operation.

Availability

XC3S1000-4FG456I is available at Aetrix Electronics and suitable for industrial motor control, video interface bridging, and communications backplane interface applications requiring stable component supply and long-term production continuity.

Supply support for XC3S1000-4FG456I 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 related software tools.

The Spartan-3 family, including XC3S1000-4FG456I, was designed for high-volume, cost-sensitive embedded applications demanding predictable performance, low power, and broad I/O flexibility.

FAQ

What is the operating temperature range for XC3S1000-4FG456I?

The XC3S1000-4FG456I is rated for industrial temperature operation from –40 °C to +100 °C junction temperature. This specification applies to the 'I' suffix variant and is validated per Xilinx DS099 documentation. Thermal derating curves and package-specific θJA values are provided in the official Spartan-3 DC and Switching Characteristics datasheet for XC3S1000-4FG456I.

Does XC3S1000-4FG456I support configuration via JTAG only?

No, XC3S1000-4FG456I supports multiple configuration modes: JTAG for debugging and programming, Master Serial (via on-chip oscillator and external PROM), Slave Serial (controlled by external master), and SelectMAP (8- or 16-bit parallel interface). The choice depends on system architecture and boot requirements - XC3S1000-4FG456I does not require JTAG for normal operation.

Can XC3S1000-4FG456I interface directly with DDR2 SDRAM?

Yes, XC3S1000-4FG456I supports DDR2 SDRAM interfaces through its SelectIO technology and DCM-controlled clocking. It meets setup/hold timing for DDR2-400 (200 MHz clock) when used with proper PCB layout and termination. Reference designs and timing constraints for XC3S1000-4FG456I DDR2 interfaces are documented in Xilinx UG331 and application note XAPP695.

How many Digital Clock Managers (DCMs) does XC3S1000-4FG456I include?

XC3S1000-4FG456I includes eight Digital Clock Managers (DCMs), each capable of frequency synthesis, phase shifting, duty-cycle correction, and clock doubling. These DCMs operate independently and are distributed across the die to minimize skew - a key capability confirmed in the XC3S1000-4FG456I device specification table of DS099.

Is XC3S1000-4FG456I pin-compatible with other Spartan-3 devices in FG456 packaging?

No, XC3S1000-4FG456I is not fully pin-compatible with other Spartan-3 FG456 devices such as XC3S2000-4FG456I or XC3S4000-4FG456I due to differing I/O bank assignments, power pin placements, and configuration pin routing. Pin compatibility must be verified per device-specific pinout tables - XC3S1000-4FG456I has its own validated pin mapping defined in DS099.