XC17S50ASO20C

Overview

The XC17S50ASO20C is a 50,000-bit (500kb) One-Time Programmable (OTP) configuration PROM manufactured by AMD. Designed for use with FPGAs, this device stores the initial configuration data required to initialize programmable logic devices upon power-up. It utilizes a serial interface for data transfer and is housed in a 20-SOIC package with a width of 7.50mm. The component operates within a commercial temperature range, ensuring reliable performance in standard electronic environments.

Feature Summary

• Provides non-volatile storage for FPGA configuration bitstreams
• Supports serial programming interface for efficient data loading
• Designed specifically for system initialization and boot processes

Applications

• FPGA configuration data storage
• System boot initialization circuits
• Industrial control systems requiring reliable startup sequences

Procurement Notes

Verify the part status as obsolete before procurement planning. Confirm compatibility with target FPGA models regarding voltage levels and pin assignments. Ensure that the OTP nature of the device aligns with production volume requirements, as reprogramming is not possible after fabrication. Check for alternative sources or last-time buy options if current stock is limited.

Selection Notes

Select this component when a dedicated configuration memory solution is required for AMD/Actel FPGAs. Consider the 500kb capacity against the size of the design bitstream. Evaluate the 20-SOIC package constraints against PCB layout space. Verify that the commercial temperature rating meets the operational environment specifications of the final application.

Part Context

This part belongs to the XC17S series of configuration PROMs, which are widely used in conjunction with Actel and AMD FPGA families. These devices serve as the primary source of configuration data, replacing older parallel PROM solutions with more compact serial interfaces. The series supports various densities to accommodate different design complexities.

Replacement Considerations

Check for direct cross-reference parts from Microchip Technology, following AMD's acquisition of Actel. Verify equivalent density and package dimensions. Ensure the replacement supports the same serial protocol and voltage requirements to maintain board compatibility without redesign.