AMD XC3S1500-4FG676I

Overview

XC3S1500-4FG676I from AMD (formerly Xilinx) is a Spartan-3 FPGA featuring 1,474,560 system gates, 116 I/O pins, and a -4 speed grade operating at up to 600 MHz internal clock frequency. It integrates 128 embedded 18×18 multipliers and supports SelectIO standards including LVCMOS, LVTTL, PCI, and HSTL. It is used in industrial motion control systems requiring real-time logic reconfiguration.

For engineers reviewing the XC3S1500-4FG676I datasheet, pinout, applications, or equivalent options, key selection criteria include I/O voltage flexibility, embedded multiplier count, configuration mode support (Master Serial, Slave Serial, JTAG), and thermal performance in extended temperature industrial environments.

Technical Context

The XC3S1500-4FG676I implements a hierarchical FPGA architecture with configurable logic blocks (CLBs), distributed RAM, block RAM (576 Kbits), and digital clock managers (DCMs) for phase-matched clock synthesis and jitter reduction. It supports dual-edge clocking and global clock routing with low skew.

Configuration is performed via external PROM, processor, or JTAG interface using bitstream files generated by Xilinx ISE Design Suite. The device uses 1.2 V core voltage and supports multiple I/O bank voltages (1.2 V to 3.3 V) with programmable drive strength and slew rate per pin.

Key Specifications

Pinout & Package

Package: 676-pin Fine-Pitch Ball Grid Array (FBGA), 27×27 mm, 1.0 mm ball pitch, RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC3S1500-4FG676I, the XC3S1600E-4FG484C trades DSP resources for raw logic capacity in a smaller package, while the XC6SLX150-3FGG484C delivers generational improvements in density and power but mandates architectural re-evaluation and toolchain transition.

Availability

XC3S1500-4FG676I is available at Aetrix Electronics and suitable for industrial automation, motion control, and legacy system upgrades requiring stable component supply and long-lifecycle support.

Supply support for XC3S1500-4FG676I 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 FPGA family for cost-sensitive, high-volume industrial applications.

The Spartan-3 family was designed for mainstream embedded logic implementation where predictable timing, I/O flexibility, and mature tool support outweigh cutting-edge process advantages.

FAQ

What is the maximum operating junction temperature for XC3S1500-4FG676I?

The XC3S1500-4FG676I is rated for industrial temperature range: –40°C to +100°C case temperature. Its maximum allowable junction temperature is 125°C, verified under worst-case power dissipation and airflow conditions per Xilinx DS151 specification. Thermal design must account for 1.2 V core power and I/O bank current draw to maintain safe junction limits in sealed enclosures.

Does XC3S1500-4FG676I support JTAG boundary-scan testing?

Yes, XC3S1500-4FG676I fully supports IEEE 1149.1 JTAG boundary-scan via dedicated TCK, TMS, TDI, and TDO pins. This enables in-circuit programming, interconnect testing, and visibility into I/O pin states during system bring-up-critical for validating complex industrial backplane interfaces before full firmware load.

Can XC3S1500-4FG676I be configured using a microcontroller?

Yes, XC3S1500-4FG676I supports Slave Serial and Slave Parallel configuration modes, allowing initialization by an external microcontroller via GPIO or SPI peripheral. The microcontroller writes the bitstream to DIN while toggling CCLK, enabling field-upgradable logic without dedicated PROM or JTAG hardware.

What I/O standards are supported by XC3S1500-4FG676I?

XC3S1500-4FG676I supports 18 SelectIO standards including LVCMOS 1.2/1.5/1.8/2.5/3.3 V, LVTTL, PCI, HSTL Class I/II, SSTL2 Class I/II, and GTL+. Each I/O bank is independently configurable for voltage and standard, enabling mixed-signal interface consolidation on a single device.

Is partial reconfiguration supported on XC3S1500-4FG676I?

Yes, XC3S1500-4FG676I supports partial reconfiguration through Xilinx ISE 14.7 tools and associated bitstream manipulation utilities. This allows dynamic swapping of functional modules-such as protocol engines or filter coefficients-without resetting the entire FPGA fabric, preserving real-time system state during updates.