AMD XC17S100AVO8I

Overview

XC17S100AVO8I from AMD (formerly Xilinx) is a serial configuration PROM designed to store and load bitstream data for Spartan-3 FPGAs. It provides 1 Mbit (128 K × 8) of non-volatile memory, supports 3.3 V operation, and features CMOS-compatible I/O with industrial temperature range (–40°C to +85°C). It is used in FPGA-based embedded control systems requiring reliable, single-chip configuration storage.

For engineers reviewing the XC17S100AVO8I datasheet, pinout, applications, or equivalent options, key selection criteria include serial interface compatibility with Spartan-3 devices, 3.3 V VCC tolerance, industrial-grade temperature rating, and verified bitstream loading reliability in power-up sequencing.

Technical Context

This PROM operates in master serial mode, interfacing directly with Spartan-3 FPGAs via dedicated configuration pins (DIN, CCLK, PROG_B, INIT_B, DONE). It uses standard SPI-like timing with no internal clock generation - all timing is driven by the FPGA's CCLK signal during configuration.

It implements a simple addressable read architecture with sequential access starting at address 0x00000. Data integrity is maintained through factory-programmed device ID and consistent erase/write cycle specifications (10,000 program/erase cycles, 20-year data retention).

Key Specifications

Pinout & Package

XC17S100AVO8I is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package with 150-mil body width and standard gull-wing leads. Pin assignments are defined per Xilinx DS054 v2.5 specification.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XCF01SVO20C and AT17LV010-10JU, XC17S100AVO8I offers guaranteed timing alignment and pin compatibility with original Spartan-3 reference designs, reducing validation effort and avoiding layout changes in legacy systems.

Availability

XC17S100AVO8I is available at Aetrix Electronics and suitable for industrial PLCs, motor control drives, and legacy telecom equipment requiring stable component supply and long-lifecycle support.

Supply support for XC17S100AVO8I 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, inheriting its FPGA and configuration memory portfolio. Xilinx originally developed these PROMs specifically for seamless integration with its FPGA families.

The XC17Sxx series was engineered to provide cost-optimized, single-chip configuration solutions for Spartan-3 FPGAs in industrial and communications applications where reliability and long-term availability are critical.

FAQ

What is the primary function of the XC17S100AVO8I in a Spartan-3 FPGA system?

The XC17S100AVO8I serves as a dedicated serial configuration PROM that stores and delivers the FPGA bitstream during power-up. It interfaces directly with the Spartan-3 configuration engine using DIN, CCLK, PROG_B, INIT_B, and DONE signals. The XC17S100AVO8I ensures deterministic, repeatable FPGA initialization without external controllers or host processors.

Does the XC17S100AVO8I support in-system programming?

Yes, the XC17S100AVO8I supports in-system programming via its PROG_B and CE_B pins. When PROG_B is asserted low, the device erases its memory and resets the address counter, allowing new configuration data to be loaded through DIN synchronized to CCLK. This capability enables field updates without device removal, and the XC17S100AVO8I retains full functionality after reprogramming.

Is the XC17S100AVO8I pin-compatible with other Xilinx PROMs like the XC17S30 or XC17S50?

No, the XC17S100AVO8I is not pin-compatible with smaller-density variants such as XC17S30 or XC17S50. Although all share the SOIC-8 package, pin functions differ across the XC17Sxx family - for example, the XC17S30 lacks INIT_B and uses a different CE_B implementation. The XC17S100AVO8I's pinout is specific to its 1 Mbit density and Spartan-3 timing requirements.

What voltage levels does the XC17S100AVO8I require for reliable operation?

The XC17S100AVO8I requires a single 3.3 V supply with ±10% tolerance (3.0 V to 3.6 V). All I/O pins are CMOS-compatible at this voltage, and no level-shifting circuitry is needed when interfacing with Spartan-3 FPGAs. The XC17S100AVO8I specifies valid operation across the full industrial temperature range (–40°C to +85°C) at these voltages.

Can the XC17S100AVO8I be used with Spartan-6 or 7-series FPGAs?

No, the XC17S100AVO8I is not compatible with Spartan-6 or 7-series FPGAs. It was designed exclusively for Spartan-3 architecture, with timing, command set, and initialization sequence optimized for that family. Later FPGAs require PROMs such as XCFxx or platform-specific configuration interfaces. Using XC17S100AVO8I with Spartan-6 would result in failed configuration or undefined behavior.