XC18V04VQ44C0100

Overview

The XC18V04VQ44C0100 is a 4-megabit in-system programmable configuration PROM from the Xilinx XC18V00 series. It provides storage for FPGA configuration bitstreams and supports serial or parallel interface modes. The device operates at 3.3V with 5V-tolerant I/O pins, accepts 2.5V output capability, and features IEEE 1149.1 JTAG support for programming and boundary-scan testing. It offers an endurance of 20,000 program/erase cycles and data retention of 20 years.

Feature Summary

• Supports in-system programming via standard 4-pin JTAG protocol
• Provides dual configuration modes: serial and parallel
• Features 5V-tolerant I/O pins compatible with 5V, 3.3V, and 2.5V signals
• Includes advanced data security options to prevent unauthorized reading

Applications

• Configuration of Xilinx Virtex-II and Virtex-II Pro FPGAs
• Configuration of Xilinx Spartan-IIE and Spartan-3 FPGAs
• In-system reprogramming of FPGA design bitstreams

Procurement Notes

This component is marked as obsolete or under obsolescence by the manufacturer. Verify current availability status through authorized distributors. Ensure compatibility with target FPGA families before procurement. Check for lead-free packaging specifications if required by environmental standards.

Selection Notes

Select this device when configuring Xilinx FPGAs requiring 4-megabit capacity. Choose VQ44 package for surface-mount applications needing 44 pins. Consider cascading multiple units for larger bitstream requirements. Verify voltage levels match the target FPGA's configuration interface.

Part Context

Part of the XC18V00 series of in-system programmable configuration PROMs designed specifically for Xilinx FPGA devices. These PROMs offer cost-effective methods for storing and reprogramming configuration data. The series includes various capacities to match different FPGA sizes.

Replacement Considerations

XC18V02, XC18V01, XC18V512 (for smaller designs), or cascaded XC18V04 units (for larger designs). Verify pinout compatibility and memory capacity requirements when substituting.