AMD XC1765EPD8I

Overview

XC1765EPD8I from AMD is a configuration PROM for Spartan-3 FPGAs, providing 65 Mbit serial configuration memory with 3.3 V supply voltage, industrial temperature range (–40°C to +85°C), and 8-pin PDIP package. It enables reliable bitstream loading in embedded control and industrial automation systems.

For engineers reviewing the XC1765EPD8I datasheet, pinout, applications, or equivalent options, key selection criteria include serial configuration interface compatibility, industrial-grade temperature operation, PDIP package suitability for prototyping and legacy PCBs, and alignment with Xilinx Spartan-3 FPGA boot requirements.

Technical Context

This PROM uses a serial SPI-compatible interface (with /CS, CLK, DIN, DOUT) to deliver FPGA configuration data sequentially. It supports master serial mode only and requires no external address decoding logic.

Internal architecture includes a one-time programmable (OTP) memory array with built-in CRC checking for bitstream integrity verification during power-up. Programming is performed via dedicated PROM programmers prior to system integration.

Key Specifications

Pinout & Package

8-pin Plastic Dual In-line Package (PDIP), 0.3-inch body width, 0.1-inch pin pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC1765EPD8I, XCF04SVO20C offers field reprogrammability but lacks sufficient density for most Spartan-3 designs, while XC17S30PQG44C provides greater flexibility in configuration modes but requires PCB layout changes and forfeits through-hole serviceability.

Availability

XC1765EPD8I is available at Aetrix Electronics and suitable for industrial automation, test equipment, motor control, and avionics ground support requiring stable component supply and long-term obsolescence management.

Supply support for XC1765EPD8I 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) is a global semiconductor leader delivering adaptive computing, embedded processing, and FPGA technologies.

The XC17xx series was originally developed by Xilinx to provide cost-effective, single-chip configuration solutions for Spartan family FPGAs, targeting industrial and embedded applications where reliability and simplicity are critical.

FAQ

What is the primary function of the XC1765EPD8I in an FPGA-based system?

The XC1765EPD8I serves as a dedicated serial configuration PROM for Spartan-3 FPGAs, storing and delivering the device's bitstream at power-up. It operates in master serial mode, driving the FPGA's configuration pins directly. Its OTP nature ensures the bitstream remains unaltered after programming, making XC1765EPD8I ideal for applications demanding configuration integrity and repeatability.

Can the XC1765EPD8I be reprogrammed in the field?

No, the XC1765EPD8I is a one-time programmable (OTP) device. Once programmed using a compatible PROM programmer, its memory contents cannot be erased or rewritten. This design ensures bitstream immutability and prevents accidental or malicious modification-key for safety-critical and certified systems relying on XC1765EPD8I.

Is the XC1765EPD8I compatible with Spartan-6 or 7-series FPGAs?

No, the XC1765EPD8I is specifically designed for Spartan-3 FPGAs and is not compatible with Spartan-6 or 7-series devices. Those families require different configuration protocols, voltage levels, and bitstream formats. Using XC1765EPD8I with non-Spartan-3 FPGAs will result in failed configuration; always verify FPGA family support in the official configuration user guide for XC1765EPD8I.

What packaging and mounting options does the XC1765EPD8I offer?

The XC1765EPD8I is supplied exclusively in an 8-pin Plastic Dual In-line Package (PDIP) with 0.3-inch width and 0.1-inch pin pitch. This through-hole package supports manual assembly, socket-based prototyping, and legacy board repair. No surface-mount variants (e.g., SOIC, TSSOP) exist for the XC1765EPD8I part number.

Does the XC1765EPD8I include error detection during configuration?

Yes, the XC1765EPD8I incorporates built-in CRC (Cyclic Redundancy Check) circuitry that validates the integrity of the stored bitstream before transmission to the FPGA. If corruption is detected, configuration halts and the FPGA remains in reset-preventing erroneous operation. This feature is integral to XC1765EPD8I's role in mission-critical industrial and avionics applications.