AMD XC3S250E-5VQG100C

Overview

XC3S250E-5VQG100C from AMD (formerly Xilinx) is a Spartan-3E FPGA with 250K system gates, 4,992 logic cells, 228 I/O pins, and embedded block RAM totaling 256 Kbits. It operates at 500 MHz system clock speed and targets low-cost, high-volume embedded control and interface bridging applications.

For engineers reviewing the XC3S250E-5VQG100C datasheet, pinout, applications, or equivalent options, key selection factors include I/O count, embedded RAM depth, configuration mode support (Master Serial, Slave SelectMAP), and VCCINT/VCCO voltage tolerance for mixed-signal interfacing.

Technical Context

The XC3S250E-5VQG100C implements a hierarchical FPGA architecture with configurable logic blocks (CLBs), distributed RAM, and dedicated carry logic. It supports multiple configuration modes including JTAG, Master Serial, and Slave SelectMAP, enabling flexible programming in-system or via external PROM.

This device integrates twelve 18×18-bit multipliers and supports DSP-intensive functions such as FIR filtering and data path arithmetic. Its I/O banks are independently configurable for LVCMOS, LVTTL, PCI, and SSTL standards across four voltage domains (VCCO = 1.2V to 3.3V).

Key Specifications

Pinout & Package

VQG100 is a 100-pin Very Thin Quad Flatpack (VQFP) package with 0.5 mm pitch, lead-free (RoHS-compliant), and thermal pad exposed on underside for enhanced heat dissipation in compact PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC3S250E-5VQG100C, the XC3S500E-5VQG100C offers scalable logic density within identical footprint and tooling, while the LFE5U-25F-8MG285I provides updated process node and transceiver capability at the cost of migration effort and non-pin-compatible layout.

Availability

XC3S250E-5VQG100C is available at Aetrix Electronics and suitable for industrial control systems, automotive diagnostics equipment, and medical sensor aggregation platforms requiring stable component supply and long-term obsolescence management.

Supply support for XC3S250E-5VQG100C 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 solutions including FPGAs, adaptive SoCs, and AI engines for data center, edge, and embedded markets.

The Spartan-3E family was designed for cost-sensitive, high-volume applications requiring reliable programmable logic with integrated memory and I/O flexibility - especially in industrial automation and legacy interface bridging.

FAQ

What configuration methods does the XC3S250E-5VQG100C support?

The XC3S250E-5VQG100C supports four configuration modes: JTAG for debugging and programming, Master Serial for boot-from-PROM, Slave SelectMAP for processor-controlled parallel loading, and Slave Parallel for high-speed configuration via microcontroller GPIO. Each mode uses distinct pin assignments and timing requirements defined in Xilinx UG332.

Does the XC3S250E-5VQG100C include on-chip oscillator circuitry?

No, the XC3S250E-5VQG100C does not integrate an on-chip oscillator. System clock must be provided externally via dedicated clock input pins (e.g., CLK0, CLK1). Internal DCM (Digital Clock Manager) blocks require clean, low-jitter external reference clocks to achieve stable frequency synthesis and phase alignment.

What is the maximum operating temperature range for the XC3S250E-5VQG100C?

The XC3S250E-5VQG100C is rated for commercial temperature range (0°C to +70°C) as indicated by the 'C' suffix in the part number. It is not qualified for extended or industrial temperature grades; operation outside this range may result in timing violations or configuration loss.

Can the XC3S250E-5VQG100C interface directly with 3.3V peripherals?

Yes, the XC3S250E-5VQG100C supports 3.3V I/O through its SelectIO banks when configured for LVCMOS33 or LVTTL standards. VCCO must be set to 3.3V for the corresponding I/O bank, and all signals in that bank must share the same voltage domain per Xilinx DS312 specification.

Is the XC3S250E-5VQG100C compatible with Xilinx ISE Design Suite?

Yes, the XC3S250E-5VQG100C is fully supported by Xilinx ISE 14.7, the final official release for Spartan-3E devices. Synthesis, place-and-route, and bitstream generation are validated for this tool version; newer Vivado tools do not support Spartan-3E architecture.