XC17S40PD8I

Overview

The XC17S40PD8I is a single-time programmable (OTP) configuration PROM designed for AMD FPGA systems. It provides 400 kilobits of storage capacity to store configuration data. The device operates within a voltage range of 4.5V to 5.5V and supports an industrial temperature range from -40°C to +85°C. It is housed in an 8-pin plastic dual in-line package (PDIP) with a standard 0.300-inch width, suitable for through-hole mounting on printed circuit boards.

Feature Summary

• Single-time programmable memory architecture for permanent FPGA configuration storage
• Industrial temperature rating ensuring reliable operation in harsh environments
• Standard 8-pin DIP packaging facilitating easy integration into legacy or through-hole designs

Applications

• Configuration of Xilinx Spartan-XL field-programmable gate arrays
• Configuration of Xilinx XC4000E and XLA families
• Configuration of Xilinx 1700L, E, and EL series devices
• System initialization for embedded control applications using compatible FPGAs

Procurement Notes

This component is officially listed as obsolete by the manufacturer. Availability is restricted to secondary market distributors or surplus inventory. Verify the specific lot date code and physical condition upon receipt, as these parts may have been stored for extended periods. Ensure compatibility with your target FPGA family before procurement, as newer alternatives may be recommended by the manufacturer for new designs.

Selection Notes

Select this part only when configuring older AMD/Xilinx FPGA families such as Spartan-XL, XC4000E, or 1700L that require OTP PROM initialization. Consider the 400kb capacity limit against your bitstream size requirements. For new designs, evaluate modern non-volatile memory options or flash-based configuration controllers to ensure long-term supply chain stability and support.

Part Context

The XC17S40PD8I belongs to the XC17S00 family of configuration PROMs. These devices were historically essential for booting Xilinx FPGAs by providing the initial configuration bitstream upon power-up. They serve as a bridge between static configuration needs and the reprogrammable nature of the associated FPGA fabric, ensuring deterministic startup behavior for the system.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the device is obsolete, direct pin-to-pin replacements may not exist. Designers should consult official AMD replacement guides for migrating from XC17S00 family parts to modern configuration solutions.