AMD XC3S100E-4TQ144I

Overview

XC3S100E-4TQ144I from AMD (formerly Xilinx) is a Spartan-3E FPGA with 100,000 system gates, 1,728 logic cells, 24 I/O banks, and embedded block RAM totaling 294,912 bits. It operates at -4 speed grade (tPD = 5.0 ns), supports LVCMOS/LVTTL I/O standards, and targets low-cost industrial control and communication interface logic.

For engineers reviewing the XC3S100E-4TQ144I datasheet, pinout, applications, or equivalent options, key selection factors include I/O voltage flexibility (1.2 V to 3.3 V), distributed RAM depth (16-bit wide × 32 deep per LUT), and configuration via Master Serial mode using external PROM.

Technical Context

The XC3S100E-4TQ144I implements a hierarchical architecture with configurable logic blocks (CLBs), each containing two slices with four LUTs and eight flip-flops. It integrates twelve 18×18 multipliers for DSP functions and supports SelectIO technology for mixed-voltage I/O interfacing.

Configuration is performed through JTAG or serial PROM, with internal startup sequence controlling INIT_B, PROGRAM_B, and DONE signals. The device includes Digital Clock Managers (DCMs) providing frequency synthesis, phase shifting, and duty cycle correction across up to eight clock outputs.

Key Specifications

Pinout & Package

TQFP-144 (Thin Quad Flat Package, 20 mm × 20 mm, 0.5 mm pitch) with exposed thermal pad. Pin count includes 119 user I/O, 4 dedicated configuration pins (PROGRAM_B, INIT_B, DONE, CCLK), 4 global clock inputs, and power/ground distribution across multiple VCCO/VCCAUX/VCCINT rails.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC3S100E-4TQ144I, the XC3S200E-4TQ144I offers scalable logic resources within identical footprint, while the Lattice XP2-20E-4T144C eliminates configuration dependency but trades off maximum operating frequency and I/O flexibility.

Availability

XC3S100E-4TQ144I is available at Aetrix Electronics and suitable for industrial automation, embedded video interfaces, and motor control systems requiring stable component supply across extended product lifecycles.

Supply support for XC3S100E-4TQ144I 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 maintains the Spartan family as part of its adaptive computing portfolio for cost-sensitive, high-volume embedded applications.

The Spartan-3E family was designed specifically for low-power, low-gate-count logic replacement in industrial and communications equipment where reprogrammability and I/O flexibility outweigh raw performance.

FAQ

What is the maximum operating frequency supported by the XC3S100E-4TQ144I?

The XC3S100E-4TQ144I has a -4 speed grade specifying a worst-case propagation delay (tPD) of 5.0 ns, enabling reliable synchronous operation up to 200 MHz for registered logic paths. Actual achievable frequency depends on design placement, routing, and DCM usage - typical user clock domains range from 50 MHz to 150 MHz in production implementations of XC3S100E-4TQ144I.

Does the XC3S100E-4TQ144I require an external configuration PROM?

Yes, the XC3S100E-4TQ144I is SRAM-based and requires external non-volatile storage (e.g., XCF02S or third-party SPI PROM) to reload the configuration bitstream at power-up. It supports Master Serial, Slave Serial, and JTAG configuration modes, but lacks on-chip Flash memory - this is a defining characteristic of the Spartan-3E family including XC3S100E-4TQ144I.

Can the XC3S100E-4TQ144I operate with mixed I/O voltages on the same bank?

No, the XC3S100E-4TQ144I requires uniform VCCO per I/O bank - all pins in a given bank must share the same output voltage standard (e.g., 3.3 V LVCMOS or 2.5 V SSTL). However, different banks may be independently configured for distinct standards, enabling true mixed-voltage system interfacing across the XC3S100E-4TQ144I's 24 I/O banks.

How many global clock networks does the XC3S100E-4TQ144I provide?

The XC3S100E-4TQ144I provides four dedicated global clock input pins (GCLK0–GCLK3), each feeding a low-skew routing network that reaches all CLBs, I/Os, and DCMs. These are separate from the eight clock outputs generated by its four DCMs, allowing concurrent use of external and synthesized clocks within the same XC3S100E-4TQ144I design.

Is the XC3S100E-4TQ144I RoHS compliant and lead-free?

Yes, the XC3S100E-4TQ144I is manufactured in a RoHS-compliant, lead-free process and meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) requirements. The TQFP-144 package uses matte tin finish, and full compliance documentation is available in AMD's official product change notices for XC3S100E-4TQ144I.