The XC18V02VQ44A is a high-performance 2-megabit in-system programmable configuration PROM manufactured by Xilinx (now AMD). This versatile memory device provides a cost-effective and reliable solution for storing and reprogramming Xilinx FPGA configuration bitstreams. Designed for industrial-grade applications, the XC18V02VQ44A operates across a full temperature range and supports multiple configuration modes.

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XC18V02VQ44A Key Features and Benefits

The XC18V02VQ44A configuration PROM stands out as an essential component for FPGA-based designs. Here are the primary features that make this device indispensable for engineers and designers:

In-System Programmability

One of the most significant advantages of the XC18V02VQ44A is its in-system programmable capability. Engineers can reprogram the device directly on the PCB without removing it from the circuit board. This feature dramatically reduces development time and enables field updates for deployed systems.

Dual Configuration Mode Support

The XC18V02VQ44A supports both serial and parallel (SelectMAP) configuration modes, offering maximum flexibility for different FPGA architectures and design requirements. Whether your application requires Master Serial, Slave Serial, Master SelectMAP, or Slave Parallel modes, this PROM delivers seamless compatibility.

Industrial-Grade Reliability

Built with Xilinx’s low-power advanced CMOS flash process, the XC18V02VQ44A guarantees exceptional endurance and data retention. The device withstands demanding industrial environments while maintaining consistent performance throughout its operational life.

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XC18V02VQ44A Technical Specifications

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XC18V02VQ44A Electrical Characteristics

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XC18V02VQ44A Performance Parameters

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XC18V02VQ44A Package Information

VQ44 Package Dimensions

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XC18V02VQ44A Pin Configuration Overview

The XC18V02VQ44A features a comprehensive pinout designed for efficient FPGA configuration:

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XC18V02VQ44A Compatible FPGA Families

The XC18V02VQ44A configuration PROM is compatible with numerous Xilinx FPGA families:

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XC18V02VQ44A JTAG Boundary-Scan Support

IEEE 1149.1 Compliance

The XC18V02VQ44A fully supports IEEE Standard 1149.1 boundary-scan (JTAG) for programming, testing, and debugging. This standardized interface enables:

• In-system programming via JTAG download cables
• Board-level testing and fault diagnosis
• JTAG command initiation of FPGA configuration
• Read security protection for intellectual property

JTAG Instructions Supported

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XC18V02VQ44A Cascading Configuration

Multi-Device Chaining

For applications requiring larger bitstream storage, multiple XC18V02VQ44A devices can be cascaded together. The CEO (Chip Enable Output) pin connects to the CE (Chip Enable) input of the subsequent device, creating a seamless daisy-chain configuration.

Cascade Compatibility

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XC18V02VQ44A Configuration Modes Explained

Master Serial Mode

In Master Serial mode, the FPGA generates the configuration clock (CCLK) that drives the XC18V02VQ44A. Data is output serially on the D0 pin, synchronized with each rising clock edge. This mode requires minimal external components.

Slave Serial Mode

When operating in Slave Serial mode, an external clock source drives both the PROM and FPGA. This configuration is ideal for systems with multiple FPGAs or centralized clock management requirements.

Master SelectMAP Mode

The Master SelectMAP mode enables 8-bit parallel data transfer, significantly reducing configuration time. The FPGA generates the clock while data is available on pins D0-D7.

Slave SelectMAP Mode

In Slave SelectMAP (Slave Parallel) mode, an external oscillator provides the configuration clock. This mode supports the fastest configuration speeds up to 33 MHz clock rates.

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XC18V02VQ44A Design Software Support

The XC18V02VQ44A is fully supported by Xilinx development tools:

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XC18V02VQ44A Ordering Information

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XC18V02VQ44A Application Areas

The XC18V02VQ44A configuration PROM serves critical roles across diverse industries:

• Telecommunications Equipment: Base stations, routers, and network switches
• Industrial Automation: PLCs, motion controllers, and process control systems
• Medical Devices: Diagnostic equipment and patient monitoring systems
• Aerospace and Defense: Avionics, radar systems, and secure communications
• Consumer Electronics: Set-top boxes, gaming systems, and audio/video equipment
• Automotive Systems: Infotainment, ADAS, and powertrain control modules

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Why Choose XC18V02VQ44A for Your FPGA Design?

Cost-Effective Solution

The XC18V02VQ44A provides an economical approach to FPGA configuration storage without compromising reliability or performance. Its competitive pricing makes it suitable for both prototype development and high-volume production.

Proven Reliability

With 20,000 program/erase cycles and 20-year data retention, the XC18V02VQ44A delivers long-term reliability for mission-critical applications. The industrial temperature range ensures consistent operation in challenging environments.

Easy Integration

The compact VQ44 package and standard JTAG interface simplify PCB layout and system integration. Comprehensive design software support accelerates development cycles and reduces time-to-market.

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Conclusion

The XC18V02VQ44A represents a reliable and versatile configuration PROM solution for Xilinx FPGA designs. With its 2Mbit density, dual configuration mode support, and robust industrial specifications, this device meets the demanding requirements of modern electronic systems. Whether you are developing telecommunications infrastructure, industrial automation equipment, or consumer electronics, the XC18V02VQ44A delivers the performance and reliability your designs require.