AMD XC17256ELPD8C

Overview

XC17256ELPD8C from AMD is a 256-kbit serial PROM configured for configuration memory in Xilinx FPGA systems, operating at 5V supply, supporting 10 MHz read speed, with industrial temperature range (–40°C to +85°C), and used in legacy Virtex and Spartan FPGA boot loading.

For engineers reviewing the XC17256ELPD8C datasheet, pinout, applications, or equivalent options, key selection criteria include voltage compatibility with older Xilinx configuration interfaces, serial access timing compliance, data retention lifetime, and package footprint for through-hole PCB integration.

Technical Context

This device implements a CMOS-based serial EEPROM architecture optimized for FPGA configuration bitstream storage. It uses a 3-wire SPI-compatible interface (CLK, DATA, CE) with no write-protect pin, and supports sequential read-only access after power-up initialization.

The XC17256ELPD8C integrates internal address counters and automatic page boundary handling during read cycles. Its internal logic maps the 256 kbit capacity into 32K × 8 organization, with fixed 8-bit parallel output width aligned to Xilinx configuration controller expectations.

Key Specifications

Pinout & Package

XC17256ELPD8C is housed in an 8-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting. Pin spacing follows JEDEC MS-001 standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC17256D and AM29LV200B, the XC17256ELPD8C offers direct pin-compatible replacement for through-hole DIP-8 FPGA configuration sockets without modifying board layout or firmware, while maintaining strict timing alignment with legacy Xilinx controllers.

Availability

XC17256ELPD8C is available at Aetrix Electronics and suitable for FPGA configuration boot loading, industrial control system maintenance, and telecom line card reconfiguration requiring stable component supply and long-lifecycle support.

Supply support for XC17256ELPD8C 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 specializing in high-performance computing, adaptive SoCs, and programmable logic solutions, with roots in FPGA and configuration technology development.

The XC1700 family was designed specifically to provide standardized, single-supply serial configuration memory for Xilinx's early-generation FPGA platforms, emphasizing reliability and pinout consistency across voltage and density variants.

FAQ

What is the primary function of the XC17256ELPD8C in FPGA systems?

The XC17256ELPD8C serves as a serial configuration PROM that stores and delivers the bitstream to initialize Xilinx XC4000E and XC5200-series FPGAs at power-up. It operates in a 3-wire interface mode (CE, CLK, DATA) and is electrically and timing-compatible with Xilinx configuration controllers. The XC17256ELPD8C eliminates the need for external programming circuitry by providing autonomous, self-contained FPGA boot loading.

Does the XC17256ELPD8C support in-system programming or reconfiguration?

No, the XC17256ELPD8C is a one-time programmable (OTP) serial PROM and does not support in-system reprogramming. Its content is written during manufacturing or pre-assembly programming and remains fixed thereafter. For field-upgradable FPGA configurations, alternative flash-based solutions like the XC17S05 or third-party SPI flash devices would be required instead of the XC17256ELPD8C.

What package type and mounting style does the XC17256ELPD8C use?

The XC17256ELPD8C uses an 8-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole leads. It conforms to JEDEC MS-001 standards and is intended for wave soldering or manual insertion. This package enables direct replacement of legacy configuration PROMs in existing industrial and telecom PCBs without requiring surface-mount rework or adapter boards.

Is the XC17256ELPD8C compatible with modern Xilinx FPGA families?

No, the XC17256ELPD8C is designed exclusively for legacy Xilinx FPGA families including XC4000E, XC4000XL, and XC5200. It lacks the voltage tolerance, interface protocol, and timing parameters required for Spartan-3, Virtex-II, or newer families. Modern FPGAs use JTAG, SelectMAP, or quad-SPI interfaces incompatible with the XC17256ELPD8C's 3-wire serial architecture.

What is the data retention specification for the XC17256ELPD8C?

The XC17256ELPD8C guarantees 20 years of data retention at +85°C ambient temperature, verified per JEDEC JESD22-A117 stress testing. This specification ensures reliable long-term operation in industrial environments where field replacement is infrequent. The XC17256ELPD8C maintains bitstream integrity without refresh cycles or backup power, making it suitable for unattended infrastructure applications.