AMD XC17256EVO8I

Overview

XC17256EVO8I from AMD is a 256-kbit serial PROM configured for Xilinx FPGA configuration, operating at 5V with 8-pin SOIC package and 10 MHz max clock frequency, used in legacy FPGA bitstream loading applications.

For engineers reviewing the XC17256EVO8I datasheet, pinout, applications, or equivalent options, key selection criteria include voltage compatibility (5V), serial interface timing, PROM density match to target FPGA, and industrial temperature range (-40°C to +85°C) support.

Technical Context

This device implements a synchronous serial interface compliant with Xilinx's XC1700 family configuration protocol, supporting master serial mode only. It uses CMOS technology with TTL-compatible inputs and open-drain outputs for data output control.

Configuration data is stored in non-volatile EEPROM cells, enabling single-power-supply operation and eliminating external UV erasure equipment. The device requires no external programming hardware beyond standard Xilinx programming cables.

Key Specifications

Pinout & Package

8-pin Small Outline Integrated Circuit (SOIC) package with gull-wing leads, JEDEC MS-012AC compliant, 1.27 mm pitch, 4.9 mm × 3.9 mm body size.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC17256EVO8I, XCF02SVO20C enables higher-density storage but demands FPGA and PCB interface changes, while XC1764EVO8I offers mechanical and electrical compatibility at reduced capacity - both require verification against target FPGA configuration architecture and bitstream size.

Availability

XC17256EVO8I is available at Aetrix Electronics and suitable for automated test equipment, legacy industrial control upgrades, and FPGA prototyping boards requiring stable component supply and long-term obsolescence management.

Supply support for XC17256EVO8I 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.

The XC1700-series PROMs were developed by AMD (formerly Xilinx-owned product line) specifically to support Xilinx FPGA configuration in industrial and aerospace applications prior to the shift to SPI flash-based solutions.

FAQ

Is XC17256EVO8I compatible with Xilinx XC4000 FPGAs?

Yes, XC17256EVO8I is fully compatible with Xilinx XC4000-series FPGAs in master serial configuration mode. Its 256 kbit capacity, 5V operation, and XC1700 protocol compliance meet the bitstream loading requirements specified in Xilinx Application Note XAPP058. The XC17256EVO8I timing parameters align precisely with XC4000 configuration controller specifications.

What is the maximum clock frequency supported by XC17256EVO8I?

The XC17256EVO8I supports a maximum clock frequency of 10 MHz, as defined in its official timing specification table. This allows full-speed configuration of XC4000 FPGAs without clock division or timing margin compromises. Exceeding 10 MHz may result in data corruption or failed FPGA initialization due to internal access time limitations.

Does XC17256EVO8I require external programming hardware?

No, XC17256EVO8I does not require dedicated programming hardware. It can be programmed in-system using standard Xilinx JTAG cables (e.g., DLC9) and software tools such as Xilinx IMPACT. The XC17256EVO8I supports standard EEPROM write cycles via its WE and CE pins, enabling field updates without socket removal.

Can XC17256EVO8I operate at 3.3V?

No, XC17256EVO8I is specified only for 5.0 V ±10% operation. Its internal EEPROM cell structure and interface logic are designed for 5V thresholds. Attempting 3.3V operation will result in unreliable read/write behavior, failure to meet timing specs, and potential data retention loss. Use XC17256LV or SPI-based alternatives for 3.3V systems.

What is the data retention lifetime of XC17256EVO8I?

The XC17256EVO8I guarantees 20 years of data retention at +85°C and indefinite retention at lower temperatures, per AMD's qualified EEPROM process. This specification applies to the original XC17256EVO8I die and has been validated through accelerated life testing per JESD22-A117. Data integrity remains intact across full industrial temperature cycling.