The XC18V04VQG44I is a 4 Mbit In-System Programmable configuration PROM (programmable read-only memory) designed by Xilinx. These PROMs are used to configure Xilinx FPGAs (Field-Programmable Gate Arrays). When an FPGA powers up, it loads its configuration data from an external memory device like the XC18V04VQG44I. This PROM provides a reliable and non-volatile method for storing the FPGA's configuration bitstream.

Applications

• FPGA Configuration: Primary application is storing the configuration bitstream for Xilinx FPGAs.
• Embedded Systems: Used in systems where non-volatile storage of configuration data is needed.
• Aerospace and Defense: Suitable for applications requiring reliable storage in harsh environments.
• Telecommunications: Used in networking equipment to store FPGA configurations.
• Industrial Automation: Employed in industrial control systems where FPGA configuration needs to be persistent.

Features

• 4 Mbit Storage Capacity: Stores large FPGA configuration bitstreams.
• In-System Programmable: Allows for easy updates and modifications to the FPGA configuration without removing the device.
• Low Power Consumption: Minimizes power consumption, which is important in many embedded systems.
• High Reliability: Designed for reliable operation in a variety of environments.
• VQG44 Package: Compact surface-mount package for space-constrained applications.

Benefits

• Flexible FPGA Configuration: Allows for easy reconfiguration of the FPGA, enabling design changes and updates.
• Non-Volatile Storage: Retains the FPGA configuration even when power is removed.
• Reliable Operation: Ensures the FPGA is properly configured upon power-up.
• Easy to Use: Simplifies the FPGA configuration process.

Technical Specifications

The XC18V04VQG44I has a storage capacity of 4 Mbits. It is an In-System Programmable PROM. The VQG44 package is a 44-pin Very Thin Quad Flat Pack. Key specifications include the supply voltage, operating temperature range (often industrial grade, -40°C to +85°C), and programming voltage. The access time, which determines how quickly the FPGA can be configured at startup, is another crucial parameter. It is non-volatile, ensuring data retention even without power.