AMD XC17S20VO8C

Overview

XC17S20VO8C from AMD is a serial configuration PROM designed for Xilinx Spartan-2 FPGAs, providing 2 Mbit (256K × 8) non-volatile storage in an 8-pin SOIC package with 5V operation and 15 ns access time. It supports master serial mode configuration and is used in industrial control logic and embedded reconfigurable systems.

For engineers reviewing the XC17S20VO8C datasheet, pinout, applications, or equivalent options, key selection criteria include voltage compatibility with Spartan-2 I/O banks, read access timing margin, SOIC-8 footprint constraints, and single-supply 5V system integration.

Technical Context

This PROM implements a synchronous serial interface compatible with Xilinx FPGA configuration protocols, using CE# and OE# active-low control signals and supporting standard SPI-like read cycles. It features CMOS-compatible inputs and TTL-compatible outputs, with data retention exceeding 20 years at 25°C.

The device operates across commercial temperature range (0°C to +70°C), requires no external programming voltage, and is programmed via standard PROM programmers supporting Intel Hex or Motorola S-record formats prior to system deployment.

Key Specifications

Pinout & Package

8-pin Small Outline Integrated Circuit (SOIC) package, 150 mil body width, gull-wing leads, JEDEC MS-012AC compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC17S20VO8C, XCF02SVO20C requires 3.3V infrastructure and board-level changes, while AT17LV002-10JU offers dual-voltage flexibility but demands signal-level validation and layout revision - neither provides drop-in replacement capability.

Availability

XC17S20VO8C is available at Aetrix Electronics and suitable for industrial PLCs, automated test equipment, legacy communication interface cards, and embedded motion control systems requiring stable component supply and long-lifecycle support.

Supply support for XC17S20VO8C 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 oversees legacy Xilinx configuration PROM product lines including the XC17S family.

The XC17S series was originally developed by Xilinx to provide standardized, single-chip configuration memory for Spartan-2 FPGAs in cost-sensitive industrial and communications applications.

FAQ

What is the primary function of the XC17S20VO8C in an FPGA-based system?

The XC17S20VO8C serves as a non-volatile configuration PROM that stores and delivers the bitstream to Xilinx Spartan-2 FPGAs during power-up. It operates in master serial mode, driving the FPGA's CCLK and DIN pins directly. The XC17S20VO8C enables autonomous, repeatable FPGA initialization without host processor involvement, making it essential for embedded systems where deterministic startup is required.

Does the XC17S20VO8C support in-system programming (ISP)?

No, the XC17S20VO8C does not support in-system programming. It is a one-time programmable (OTP) PROM designed for factory programming using standard PROM programmers. Programming occurs before soldering onto the PCB, and the stored bitstream remains fixed throughout the device's operational life. Field updates require physical replacement of the XC17S20VO8C unit.

Can the XC17S20VO8C be used with Spartan-3 or newer Xilinx FPGAs?

No, the XC17S20VO8C is not compatible with Spartan-3 or newer Xilinx FPGAs. It is specifically designed for Spartan-2 devices and uses a configuration protocol and timing envelope unique to that generation. Newer families require different PROM families such as XCFxx or Platform Flash, which feature updated command sets, voltage domains, and pinouts incompatible with the XC17S20VO8C.

What is the maximum clock frequency supported during XC17S20VO8C read operations?

The XC17S20VO8C supports read operations with a minimum access time of 15 ns, enabling reliable operation with master serial clocks up to approximately 66 MHz. This timing aligns with the Spartan-2 FPGA's configuration clock specification. Exceeding this rate risks read instability and configuration failure, so the XC17S20VO8C must be used within its published timing window.

Is the XC17S20VO8C RoHS compliant?

The XC17S20VO8C is not RoHS compliant. It is a legacy device manufactured prior to RoHS enforcement and contains lead in its solder finish and die attach materials. For RoHS-compliant alternatives, engineers should consider newer configuration solutions such as the XCFxx series or third-party PROMs qualified under current environmental directives - though these require redesign due to voltage, timing, and footprint differences from the XC17S20VO8C.