AMD XC17S40XLPDG8C

Overview

XC17S40XLPDG8C from AMD (formerly Xilinx) is a serial configuration PROM designed to store and load bitstream data for Spartan-XL FPGAs. It provides 4 Mbit capacity, operates at 5.0 V supply, supports 10 MHz read speed, and uses an 8-pin SOIC package. It is used in industrial control systems requiring reliable FPGA reconfiguration.

For engineers reviewing the XC17S40XLPDG8C datasheet, pinout, applications, or equivalent options, key selection criteria include voltage compatibility with Spartan-XL I/O banks, read timing margin for configuration clock stability, endurance rating for field updates, and SOIC-8 footprint constraints in space-limited PCB layouts.

Technical Context

This PROM implements a synchronous serial interface compatible with Xilinx Spartan-XL FPGA configuration protocols. It features a single 5.0 V supply rail, supports both power-up auto-configuration and manual reprogramming via standard SPI-like command sequences, and includes internal address counters for sequential read access.

Configuration data is stored in non-volatile NMOS floating-gate memory cells. The device requires no external pull-ups on data or clock lines during FPGA-initiated reads, and its output drive strength meets Spartan-XL CCLK input loading requirements per Xilinx XAPP098.

Key Specifications

Pinout & Package

XC17S40XLPDG8C is housed in an 8-pin Small Outline Integrated Circuit (SOIC) package with standard 1.27 mm pitch and 3.9 mm body width. Pin functions are electrically and physically defined per Xilinx DS028 v2.5.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FPGA configuration PROM applications.

Compared with XCF04SVO20C and AT17LV40-10PU, XC17S40XLPDG8C delivers native 5 V compatibility, guaranteed 10 MHz read timing, and direct Spartan-XL protocol support-enabling zero-modification integration into existing industrial and avionics designs based on that FPGA family.

Availability

XC17S40XLPDG8C is available at Aetrix Electronics and suitable for industrial PLCs, automated test equipment, legacy telecom modules, and avionics subsystems requiring stable component supply across extended production lifecycles.

Supply support for XC17S40XLPDG8C 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 legacy programmable logic product lines including configuration PROMs and FPGAs originally developed for high-reliability embedded systems.

The XC17S series was developed by Xilinx specifically to provide pin- and protocol-compatible configuration memory for Spartan-XL FPGAs, targeting industrial, aerospace, and telecommunications applications with long-term obsolescence resilience.

FAQ

What is the primary function of the XC17S40XLPDG8C in an FPGA-based system?

The XC17S40XLPDG8C serves as a dedicated serial configuration PROM for Spartan-XL FPGAs. It stores the FPGA's configuration bitstream and delivers it synchronously upon power-up or reset. Its 5 V operation, 10 MHz read speed, and SOIC-8 package make XC17S40XLPDG8C ideal for direct integration into legacy industrial and avionics designs relying on the XC4000XL family.

Can XC17S40XLPDG8C be used with Spartan-3 or newer Xilinx FPGAs?

No. XC17S40XLPDG8C is electrically and protocol-specific to Spartan-XL FPGAs (XC4000E/XC4000XL). Spartan-3 and later families require different configuration voltages (3.3 V or 1.8 V), command sets, and timing parameters. Using XC17S40XLPDG8C with those devices will result in failed configuration or bus contention due to voltage mismatch and unsupported instruction decoding.

What is the maximum operating temperature range for XC17S40XLPDG8C?

XC17S40XLPDG8C is rated for commercial temperature range (0°C to +70°C) per Xilinx DS028 v2.5. While data retention is specified at 125°C, sustained operation above +70°C is not validated and may cause timing violations or increased bit error rates during configuration reads.

Does XC17S40XLPDG8C support in-system programming?

Yes. XC17S40XLPDG8C supports in-system programming via its PGM and VPP pins using Xilinx's Platform Cable USB or third-party programmers compliant with the XC17S series programming specification. Programming requires 12.5 V on VPP and appropriate command sequencing; it is not performed through the FPGA's configuration interface.

Is there a lead-free version of XC17S40XLPDG8C available?

No. XC17S40XLPDG8C is a legacy part manufactured prior to RoHS compliance mandates and is only available in leaded SOIC packaging. AMD/Xilinx does not offer a RoHS-compliant variant, and no official Pb-free replacement has been designated for this specific part number.