AMD XC17128ELPC20I

Overview

XC17128ELPC20I from AMD is a 128 kbit serial PROM configured for Xilinx FPGA configuration, featuring 5 V operation, 20 ns access time, and SOIC-20 package. It serves as non-volatile configuration memory in Spartan and Virtex family FPGA boot sequences.

For engineers reviewing the XC17128ELPC20I datasheet, pinout, applications, or equivalent options, key selection criteria include VCC tolerance (4.5–5.5 V), read cycle time (20 ns), compatibility with Xilinx SelectMAP and serial mode, and industrial temperature range (–40°C to +85°C).

Technical Context

This device implements a synchronous serial interface compatible with Xilinx FPGA configuration controllers, supporting both master serial and slave serial modes. It uses CMOS technology with TTL-compatible inputs and outputs, and includes internal address counters for sequential read operations.

The XC17128ELPC20I integrates a 128 kbit (16K × 8) organization with single-supply 5 V operation and automatic power-down mode. Its timing conforms to Xilinx XAPP099 and XAPP115 configuration guidelines for reliable bitstream loading.

Key Specifications

Pinout & Package

XC17128ELPC20I is housed in a 20-pin plastic small-outline integrated circuit (SOIC-20) package with standard 300-mil body width and 1.27 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC17128ELPC20I, XCF01SVO20C offers greater density but requires 3.3 V infrastructure, while AT17LV010-10JU enables voltage scaling at the cost of 5 V interoperability - neither supports drop-in replacement without schematic or layout revision.

Availability

XC17128ELPC20I is available at Aetrix Electronics and suitable for FPGA configuration storage, industrial control logic boot, and avionics reconfigurable modules requiring stable component supply and long-term obsolescence management.

Supply support for XC17128ELPC20I 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 is a global semiconductor company focused on high-performance computing, adaptive SoCs, and programmable logic solutions.

The XC17xxx series was developed by AMD (later acquired by Xilinx) specifically to provide standardized, factory-programmed configuration memory for early-generation Xilinx FPGAs.

FAQ

What is the primary function of the XC17128ELPC20I in an FPGA-based system?

The XC17128ELPC20I serves as a factory-programmed serial PROM that stores and delivers the configuration bitstream to Xilinx Spartan and Virtex family FPGAs at power-up. It operates in master serial mode using CCLK, DIN, and INIT signals. The XC17128ELPC20I ensures deterministic, repeatable FPGA initialization without host processor involvement, making it essential for embedded and safety-critical applications where boot reliability is mandatory.

Does the XC17128ELPC20I support in-system programming or field updates?

No, the XC17128ELPC20I is factory-programmed and does not support in-system programming or field reprogramming. Its WE# pin is designed for write protection and must be held high during operation. The XC17128ELPC20I is intended for fixed, validated bitstreams in production systems where configuration integrity and immunity to corruption are required.

Can the XC17128ELPC20I be used with modern Xilinx FPGA families like Artix or Kintex?

The XC17128ELPC20I is not compatible with Artix-7, Kintex-7, or newer FPGA families due to architectural changes in configuration protocols and bitstream formats. It was designed exclusively for Spartan-I, Spartan-II, Virtex-E, and early Virtex devices. Using XC17128ELPC20I with modern FPGAs will result in failed configuration or undefined behavior.

What is the significance of the 'I' suffix in XC17128ELPC20I?

The 'I' suffix in XC17128ELPC20I denotes industrial temperature grade, specifying guaranteed operation from –40°C to +85°C. This distinguishes it from commercial-grade variants (e.g., XC17128ELPC20C) rated for 0°C to +70°C. The XC17128ELPC20I is qualified for use in harsh environments including factory automation, transportation, and outdoor electronics where thermal stability is critical.

Is the XC17128ELPC20I pin-compatible with other members of the XC17128 family?

Yes, the XC17128ELPC20I shares identical pinout and electrical characteristics with other XC17128E variants in SOIC-20 packaging, including XC17128ELPC20C and XC17128ELPC20Q. Differences are limited to temperature grade and screening level - the XC17128ELPC20I maintains full mechanical and functional interchangeability within the same package variant.