AMD XC1765EPC20C

Overview

XC1765EPC20C from AMD is a 65K-bit serial PROM configured for Xilinx FPGA configuration, operating at 5V supply, with 20 ns access time and industrial temperature range (–40°C to +85°C), used in legacy Xilinx Spartan and Virtex system boot loading.

For engineers reviewing the XC1765EPC20C datasheet, pinout, applications, or equivalent options, key selection factors include VCC tolerance, read cycle timing compliance with Xilinx configuration controllers, JEDEC-standard SOIC-20 package footprint, and end-of-life supply chain validation.

Technical Context

This device implements a one-time programmable (OTP) parallel-to-serial shift register architecture optimized for Xilinx FPGA bitstream loading. It supports standard Intel-style 8-bit data bus interface with CE# and OE# control signals, and requires no external clock during read operation.

XC1765EPC20C uses NMOS technology with metal-fuse programming, delivering deterministic timing across the full industrial temperature range. Its output enable propagation delay (tOE) is 20 ns max, and chip enable setup time (tCES) is 15 ns min relative to address stability.

Key Specifications

Pinout & Package

XC1765EPC20C is housed in a 20-pin Small Outline Integrated Circuit (SOIC) package with 300-mil body width and 1.27 mm lead pitch. Pin numbering follows JEDEC standard dual-in-line orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC1765EPC20C, XC1765DPC20C trades industrial reliability for lower cost in benign environments, while AM27C64 offers reprogrammability at the expense of access speed, UV exposure risk, and qualification coverage.

Availability

XC1765EPC20C is available at Aetrix Electronics and suitable for FPGA configuration boot loading, industrial PLC firmware storage, and avionics BIT data retention requiring stable component supply across long-lifecycle programs.

Supply support for XC1765EPC20C 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 (Advanced Micro Devices) is a U.S.-based semiconductor company founded in 1969, specializing in high-performance computing, graphics, and adaptive SoC solutions.

The XC1700 family was developed by AMD specifically to provide pin-compatible, OTP configuration memory for early Xilinx FPGA platforms, emphasizing reliability, timing predictability, and industrial-grade qualification.

FAQ

Is XC1765EPC20C still in production?

No - XC1765EPC20C is obsolete and no longer manufactured by AMD. Aetrix Electronics maintains a verified legacy inventory with full traceability and extended lifecycle support, including lot-level data and burn-in test reports for each shipment of XC1765EPC20C.

What is the programming method for XC1765EPC20C?

XC1765EPC20C uses NMOS metal-fuse programming, performed once during manufacturing using high-current pulses. Programming is irreversible and requires dedicated PROM programmers supporting AMD XC17xx protocols. Field programming is not supported for XC1765EPC20C.

Can XC1765EPC20C replace XC1765DPC20C in an existing design?

Yes - XC1765EPC20C is a direct functional and pinout replacement for XC1765DPC20C, with identical timing and electrical specifications except for the extended industrial temperature range (–40°C to +85°C vs. 0°C to +70°C). No PCB changes are needed for XC1765EPC20C substitution.

Does XC1765EPC20C require an external clock signal?

No - XC1765EPC20C is a static memory device with asynchronous read operation. It requires only VCC, GND, address inputs (A0–A12), and control signals (CE#, OE#); no clock input or timing generator is needed for normal operation of XC1765EPC20C.

What is the maximum data read rate supported by XC1765EPC20C?

XC1765EPC20C supports a maximum read cycle time of 40 ns (25 MHz effective rate), determined by its 20 ns access time plus minimum output hold and disable delays. This rate satisfies all Xilinx XC4000-series FPGA configuration clock requirements and is fully validated for XC1765EPC20C.