AMD XC3S1000-4FG456C

Overview

XC3S1000-4FG456C from AMD (formerly Xilinx) is a Spartan-3 FPGA with 1,000,000 system gates, 17,280 logic cells, and 128 embedded 18×18 multipliers. It features 432 user I/Os in a 456-pin Fine-Pitch Ball Grid Array (FBGA) package and operates at -4 speed grade (t_PD = 4.5 ns). It is used in industrial control logic, video interface bridging, and reconfigurable digital signal processing.

For engineers reviewing the XC3S1000-4FG456C datasheet, pinout, applications, or equivalent options, key selection criteria include I/O count, embedded multiplier availability, speed grade timing, and FBGA456 thermal/mechanical compatibility in space-constrained PCB layouts.

Technical Context

The XC3S1000-4FG456C implements a hierarchical FPGA architecture with configurable logic blocks (CLBs), distributed RAM, block RAM (up to 576 Kbits), and dedicated carry logic for high-speed arithmetic. It supports SelectIO standards including LVCMOS, LVTTL, PCI, HSTL, and SSTL interfaces across its 432 user I/Os.

Configuration is performed via Master Serial, Slave Serial, or JTAG modes using external PROM or processor-controlled initialization. The device includes Digital Clock Managers (DCMs) supporting frequency synthesis, phase shifting, and duty cycle correction for up to eight independent clock domains.

Key Specifications

Pinout & Package

XC3S1000-4FG456C is housed in a 456-pin Fine-Pitch Ball Grid Array (FBGA) package with 27×27 array, 1.0 mm ball pitch, and 23.5 mm × 23.5 mm body size. Thermal pad is not present; package is RoHS-compliant and lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC3S1000-4FG456C, the XC3S1500-4FG456C offers headroom for future feature expansion, while the XC3S500E-4FG456C reduces power and cost at the expense of logic capacity-both retain identical pinout, thermal envelope, and I/O voltage flexibility.

Availability

XC3S1000-4FG456C is available at Aetrix Electronics and suitable for industrial motion control, video interface bridging, and reconfigurable DSP acceleration requiring stable component supply across extended production lifecycles.

Supply support for XC3S1000-4FG456C 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 family as part of its adaptive computing portfolio.

The Spartan-3 family was designed for cost-sensitive, high-volume applications requiring programmable logic with integrated DSP and memory resources-targeting industrial, video, and communications infrastructure.

FAQ

What is the maximum operating frequency supported by the XC3S1000-4FG456C?

The XC3S1000-4FG456C supports internal clock frequencies up to 280 MHz in typical conditions, based on its -4 speed grade and DCM output capability. This value assumes proper timing closure, adequate decoupling, and use of dedicated clock routing. Actual achievable frequency depends on design placement, routing congestion, and I/O standard selection. The XC3S1000-4FG456C datasheet specifies t_PD = 4.5 ns for CLB-to-CLB paths under worst-case conditions.

Does the XC3S1000-4FG456C support JTAG boundary-scan testing?

Yes, the XC3S1000-4FG456C fully supports IEEE 1149.1 JTAG boundary-scan for device programming, debugging, and interconnect testing. Its TDI, TDO, TMS, and TCK pins are dedicated and compliant with standard JTAG protocols. The XC3S1000-4FG456C can be configured and verified using Xilinx iMPACT or third-party boundary-scan tools without requiring additional hardware.

Can the XC3S1000-4FG456C be configured using a microcontroller?

Yes, the XC3S1000-4FG456C supports Slave Serial and Slave SelectMAP configuration modes, enabling direct initialization from an external microcontroller. In Slave Serial mode, the MCU drives CCLK and sends configuration bitstream over DIN. The XC3S1000-4FG456C asserts INIT_B and DONE signals to coordinate handshaking. No FPGA-specific bootloader is required.

What are the power supply requirements for the XC3S1000-4FG456C?

The XC3S1000-4FG456C requires three regulated supplies: 1.2 V for VCCINT (core), 2.5 V for VCCAUX (configuration and DCM), and 3.3 V for VCCO (I/O banks). Each supply must meet ripple, sequencing, and decoupling specifications defined in the XC3S1000-4FG456C datasheet. Failure to observe power-up sequence (VCCAUX before VCCINT) may result in configuration failure.

Is the XC3S1000-4FG456C RoHS-compliant and lead-free?

Yes, the XC3S1000-4FG456C is manufactured in a RoHS-compliant, lead-free FBGA package per EU Directive 2011/65/EU. The device uses matte tin finish on solder balls and meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) requirements. The XC3S1000-4FG456C is suitable for lead-free reflow processes with peak temperature up to 260 °C.