AMD XC1736EPD8I

Overview

XC1736EPD8I from AMD is a configuration PROM for Spartan and Virtex FPGAs, providing 36 Mbit serial configuration memory in an 8-pin PDIP package with 5.0 V operation, 10 MHz max clock frequency, and industrial temperature range (–40°C to +85°C), used in FPGA boot-up and system initialization.

For engineers reviewing the XC1736EPD8I datasheet, pinout, applications, or equivalent options, key selection criteria include voltage compatibility with target FPGA configuration interface, serial access timing compliance, industrial-grade reliability, and legacy PDIP footprint support in rework-sensitive or legacy board environments.

Technical Context

This device implements a one-time-programmable (OTP) serial PROM architecture optimized for Xilinx FPGA configuration loading via SelectMAP or serial mode. It supports standard SPI-compatible read commands and uses internal address counters for sequential data streaming during power-up.

XC1736EPD8I features built-in power-on reset logic that initiates automatic configuration upon VCC stabilization and includes write-protection via hardware enable pin (WP#) and software command lock. No internal oscillator or voltage regulation is integrated - timing relies entirely on external FPGA-provided clock.

Key Specifications

Pinout & Package

XC1736EPD8I is housed in an 8-pin plastic dual in-line package (PDIP) with 0.3-inch body width and through-hole mounting. Pin spacing is 0.1 inch, compatible with standard DIP-8 sockets and wave-soldering processes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XCF32PFS48C and XC17S30PC44C, XC1736EPD8I uniquely combines 5 V operation, OTP security, industrial temperature rating, and PDIP-8 form factor - making it irreplaceable in legacy 5 V FPGA systems where socket-based field replacement and tamper resistance are mandatory.

Availability

XC1736EPD8I is available at Aetrix Electronics and suitable for industrial PLCs, FPGA-based test equipment, military communications baseband units, and avionics data acquisition requiring stable component supply and long-lifecycle support.

Supply support for XC1736EPD8I 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 (formerly Xilinx) designs and manufactures high-performance programmable logic devices, including FPGAs, SoCs, and associated configuration solutions for aerospace, industrial, and communications markets.

The XC17 family was developed specifically to provide reliable, industry-standard configuration memory for Spartan and Virtex FPGA platforms, emphasizing long-term availability, rugged packaging, and deterministic boot behavior.

FAQ

Is XC1736EPD8I compatible with Xilinx Spartan-II FPGAs?

Yes, XC1736EPD8I is explicitly designed for Spartan-II and early Virtex FPGAs. Its 36 Mbit capacity matches the maximum bitstream size of Spartan-IIE XC2S300E and supports both Master Serial and SelectMAP configuration modes per Xilinx UG071 documentation.

Can XC1736EPD8I be reprogrammed after initial programming?

No, XC1736EPD8I is a one-time-programmable (OTP) PROM. Once programmed, its memory contents cannot be erased or rewritten. This ensures configuration integrity but requires final bitstream validation before programming.

What is the function of the WP# pin on XC1736EPD8I?

The WP# (Write Protect) pin on XC1736EPD8I is an active-low input that disables all programming commands when asserted. It provides hardware-level protection against accidental reprogramming during system operation or maintenance.

Does XC1736EPD8I require an external clock source?

Yes, XC1736EPD8I requires an external clock applied to the CLK pin. The FPGA typically generates this clock during configuration; no internal oscillator is present, and timing compliance depends entirely on external clock stability and edge integrity.

Is XC1736EPD8I RoHS compliant?

XC1736EPD8I is manufactured under legacy process rules and predates RoHS Directive 2002/95/EC. It contains lead in the PDIP package finish and solderable leads, and is not RoHS compliant - intended for industrial and military applications where exemptions apply.