AMD XC3S1200E-5FG400C

Overview

XC3S1200E-5FG400C from AMD (formerly Xilinx) is a Spartan-3E FPGA with 1,191,488 system gates, 22,176 logic cells, and 500 Kbits of block RAM. It features 376 user I/Os, operates at -5 speed grade (equivalent to 525 MHz internal clock), and is packaged in a 400-pin Fine-Pitch Ball Grid Array (FBGA). It is used in industrial control logic and reconfigurable digital signal processing subsystems.

For engineers reviewing the XC3S1200E-5FG400C datasheet, pinout, applications, or equivalent options, key selection considerations include I/O count, block RAM depth, speed grade timing closure, and FBGA400 thermal-mechanical compatibility with existing PCB layouts.

Technical Context

The XC3S1200E-5FG400C implements a hierarchical CLB-based architecture with dedicated carry logic and distributed RAM. It supports SelectIO standards including LVCMOS, LVTTL, PCI, and SSTL, with programmable slew rate and drive strength per bank.

Configuration is performed via Master Serial mode using external PROM or JTAG boundary-scan. The device includes Digital Clock Managers (DCMs) for phase shifting, duty cycle correction, and frequency synthesis up to 320 MHz output.

Key Specifications

Pinout & Package

XC3S1200E-5FG400C is housed in a 400-pin Fine-Pitch Ball Grid Array (FBGA) package with 27 × 27 mm body size, 1.0 mm ball pitch, and Pb-free (RoHS-compliant) solder balls. Thermal pad on underside requires exposed copper thermal land for conduction cooling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC3S1200E-5FG400C, XC3S1000-4FG456C trades logic capacity and multiplier capability for lower unit cost and smaller footprint, while XC3S1600E-5FG484C extends scalability for bandwidth-intensive applications requiring more I/Os and deeper memory buffers.

Availability

XC3S1200E-5FG400C is available at Aetrix Electronics and suitable for industrial motion control, medical imaging front-ends, and test & measurement signal generation requiring stable component supply and long-term production continuity.

Supply support for XC3S1200E-5FG400C 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, adaptive SoCs, and AI accelerators for data center, edge, and embedded markets.

The Spartan-3E family was designed for cost-sensitive, high-volume applications requiring reconfigurable logic with integrated memory and clock management-targeting industrial automation, video processing, and communications infrastructure.

FAQ

What is the maximum operating frequency supported by XC3S1200E-5FG400C?

The XC3S1200E-5FG400C has a -5 speed grade, guaranteeing timing closure for internal logic paths up to 525 MHz under worst-case commercial temperature and voltage conditions. This rating applies to dedicated carry chains and registered outputs-not all paths achieve this frequency; actual system clock rates depend on design topology and place-and-route results.

Does XC3S1200E-5FG400C support JTAG programming and debugging?

Yes, XC3S1200E-5FG400C includes IEEE 1149.1-compliant JTAG boundary scan circuitry. It supports in-system programming (ISP), configuration verification, and board-level interconnect testing. The TCK, TMS, TDI, and TDO pins are dedicated and electrically compatible with standard JTAG adapters such as Xilinx Platform Cable USB II.

How much block RAM is available in XC3S1200E-5FG400C and what is its access width?

XC3S1200E-5FG400C contains 500 Kbits of total block RAM, organized as twenty 18-Kbit blocks. Each block can be configured as single-port or true dual-port RAM with programmable widths from 1 to 36 bits per port, supporting synchronous read/write with independent clocks per port.

Can XC3S1200E-5FG400C interface directly with DDR SDRAM?

No, XC3S1200E-5FG400C does not include dedicated DDR or DDR2 memory controller hard IP. While it can implement soft DDR controllers using logic resources and I/O timing constraints, reliable operation requires careful PCB layout, termination, and calibration-especially at speeds above 133 MHz. External PHY or controller ICs are recommended for production DDR interfaces.

What configuration modes are supported by XC3S1200E-5FG400C?

XC3S1200E-5FG400C supports Master Serial, Slave Serial, Slave Parallel, and JTAG configuration modes. Master Serial is most common, using an external PROM to load the bitstream automatically on power-up. JTAG is used for development, debugging, and field updates without requiring external memory devices.