XC17S20PD8I

Overview

The XC17S20PD8I is a specialty memory circuit manufactured by Rochester Electronics, functioning as a PROM configuration device. It features a synchronous operation mode and a memory density of 178,144 bits organized as 178,144 words by 1 bit. The component is housed in an 8-pin Plastic Dual In-Line Package (PDIP). It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Provides non-volatile storage for FPGA configuration data
• Supports synchronous serial interface operations
• Utilizes a standard through-hole DIP-8 package

Applications

• Configuration of Xilinx Field Programmable Gate Arrays
• Industrial control system initialization
• Embedded hardware setup retention

Procurement Notes

Verify the manufacturer designation on the component marking, as Rochester Electronics often distributes components originally designed by other semiconductor manufacturers. Confirm that the PDIP-8 package dimensions match the target PCB footprint requirements. Ensure the operating temperature range meets the specific environmental conditions of the intended deployment scenario before finalizing procurement.

Selection Notes

Select this component when a low-density, single-bit wide configuration memory is required for legacy or specific FPGA architectures. The synchronous interface simplifies timing constraints compared to asynchronous alternatives. Consider the physical size of the DIP-8 package against available board space, as surface-mount options may be necessary for high-density designs.

Part Context

This part belongs to the Xilinx XC17 series of programmable read-only memories, widely used for configuring Xilinx FPGAs. Rochester Electronics provides these parts as a source of supply for discontinued or legacy components, ensuring continuity for existing designs that rely on this specific memory technology and package style.

Replacement Considerations

Check for pin-compatible alternatives with identical memory organization. Verify that any substitute supports the same synchronous protocol and voltage levels. Ensure the replacement maintains the required industrial temperature rating.