AMD XC1765EVO8C

Overview

XC1765EVO8C from AMD is a configuration PROM for Spartan and Virtex FPGAs, providing 65 Mbit serial configuration memory with 3.3 V I/O compatibility, industrial temperature range (–40°C to +85°C), and IEEE 1149.1 JTAG boundary-scan support. It is used in FPGA-based industrial control systems requiring reliable bitstream storage.

For engineers reviewing the XC1765EVO8C datasheet, pinout, applications, or equivalent options, key selection factors include serial configuration interface compliance, JEDEC-standard SO8 package footprint, 3.3 V I/O voltage tolerance, and JTAG testability for production programming and board-level diagnostics.

Technical Context

The XC1765EVO8C implements a synchronous serial interface compatible with Xilinx FPGA configuration protocols, supporting both master and slave modes. It uses CMOS EEPROM technology with write-protect logic and built-in power-on reset circuitry to ensure deterministic initialization.

Configuration data is accessed via a 4-wire SPI-compatible bus (DIN, DOUT, CCLK, CS), with programmable read/write timing parameters aligned to Spartan-II and Virtex-E FPGA startup sequences. The device supports in-system programming through JTAG using standard IEEE 1149.1 TAP controller commands.

Key Specifications

Pinout & Package

XC1765EVO8C is housed in an 8-pin SOIC (SO8) package per JEDEC MS-012, with 1.27 mm pitch and gull-wing leads. Package dimensions: 5.0 mm × 4.0 mm × 1.75 mm (L × W × H).

Key Features

Applications

Equivalent & Alternatives

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

Compared with XCF08PVO20C and AT17LV65-10TQI, the XC1765EVO8C uniquely combines 65 Mbit density, SO8 footprint, and integrated IEEE 1149.1 JTAG - enabling compact, testable, and upgrade-capable FPGA configurations in industrial space-constrained systems.

Availability

XC1765EVO8C is available at Aetrix Electronics and suitable for industrial PLCs, FPGA-based motor drives, and telecom line cards requiring stable component supply across extended product lifecycles.

Supply support for XC1765EVO8C 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 FPGA technologies for data center, embedded, and industrial applications.

The XC1765EVO8C belongs to AMD's legacy Xilinx configuration PROM product line, designed specifically to support Spartan and Virtex FPGA families with reliable, standards-compliant nonvolatile configuration storage.

FAQ

What is the primary function of the XC1765EVO8C in an FPGA-based system?

The XC1765EVO8C serves as a serial configuration PROM that stores and delivers the bitstream to Spartan and Virtex FPGAs during power-up. It ensures deterministic initialization by providing synchronized clocked data via its CCLK, DIN, and DOUT interface. The XC1765EVO8C is essential for cold-start operation and supports both factory and in-system programming workflows.

Does the XC1765EVO8C support JTAG boundary-scan testing?

Yes, the XC1765EVO8C fully complies with IEEE 1149.1 JTAG boundary-scan standards. It integrates a dedicated TAP controller that allows access to configuration memory for programming and verification without requiring separate test infrastructure. This capability is leveraged during board-level manufacturing test and field diagnostics for systems using the XC1765EVO8C.

Can the XC1765EVO8C be used with modern Xilinx/AMD FPGA families like Artix or Kintex?

No, the XC1765EVO8C is specifically designed for Spartan-II, Spartan-IIE, and Virtex-E FPGAs. It does not support the configuration protocols, voltage levels, or bitstream formats of newer families such as Artix-7, Kintex-7, or Versal. Using the XC1765EVO8C with those devices will result in failed configuration or undefined behavior.

What is the role of the WP pin on the XC1765EVO8C?

The WP (Write Protect) pin on the XC1765EVO8C is an active-low hardware lock that disables all write and erase operations when asserted. This prevents accidental corruption of the stored FPGA bitstream during system operation or power transients. In typical use, the WP pin is pulled high via a resistor to VCC, and only grounded intentionally during reprogramming sessions.

Is the XC1765EVO8C pin-compatible with other Xilinx configuration PROMs in SO8 packages?

The XC1765EVO8C shares the same JEDEC SO8 footprint and pinout as XC17S155, XC17S200, and XC17S300 PROMs, but differs electrically in capacity and timing. While mechanical placement is identical, substituting it for lower-density variants requires verifying timing margins and bitstream alignment. The XC1765EVO8C is not a drop-in replacement for non-65 Mbit parts without design validation.