The XC1702LPC44C is a high-density one-time programmable (OTP) serial configuration PROM manufactured by AMD (formerly Xilinx). This 2-megabit memory device provides reliable, non-volatile storage for Xilinx FPGA configuration bitstreams. Designed for commercial temperature applications, the XC1702LPC44C delivers exceptional performance in embedded systems, industrial automation, and telecommunications equipment.

XC1702LPC44C Product Overview

The XC1702LPC44C belongs to the XC1700L series of low-voltage configuration PROMs. These devices offer a cost-effective solution for storing FPGA configuration data that loads automatically at power-up. Engineers choose this component for its simple interface, robust data retention, and compatibility with multiple Xilinx FPGA families including Spartan, Virtex, and XC4000 series devices.

Rochester Electronics supplies this component as an authorized semiconductor source, ensuring authentic parts with full traceability and quality assurance.

XC1702LPC44C Key Specifications

XC1702LPC44C Electrical Characteristics

PLCC-44 Package Pinout Configuration

The XC1702LPC44C utilizes a 44-pin PLCC package that enables straightforward PCB integration. This package supports both through-hole socket mounting and surface-mount applications.

XC1702LPC44C Features and Benefits

High-Density Configuration Storage

The 2-megabit capacity accommodates configuration bitstreams for mid-range to high-density FPGAs. This memory density supports complex digital designs without requiring multiple cascaded PROMs.

Low-Voltage 3.3V Operation

Operating at 3.3V supply voltage, the XC1702LPC44C integrates seamlessly with modern low-power FPGA systems. This voltage compatibility reduces power consumption and simplifies power supply design.

Simple Serial Interface

The device requires only a serial data line and two control signals (CE and CLK) for FPGA configuration. This minimal interface reduces PCB routing complexity and board space requirements.

Cascadable Architecture

Multiple XC1702LPC44C devices can cascade using the CEO (Chip Enable Output) signal. This feature enables configuration of larger FPGAs or multiple FPGAs from a single clock source.

Programmable Reset Polarity

The RESET/OE pin supports both active-high and active-low polarity through programming. This flexibility ensures compatibility with various FPGA reset configurations.

20-Year Data Retention

Guaranteed data retention exceeding 20 years provides long-term reliability for deployed systems. This specification makes the XC1702LPC44C suitable for aerospace, military, and industrial applications requiring extended operational lifetimes.

Compatible FPGA Families

The XC1702LPC44C configuration PROM supports these Xilinx FPGA families:

Configuration Modes Supported

Master Serial Mode

In Master Serial mode, the FPGA generates the configuration clock that drives the PROM. Data appears on the DATA output pin after a short access time following each rising clock edge. The FPGA continues generating clock pulses until configuration completes.

Slave Serial Mode

Slave Serial mode requires an external clock source to drive both the PROM and FPGA simultaneously. This mode suits applications with multiple FPGAs sharing a common configuration clock.

Ordering Information

Design Considerations for XC1702LPC44C Implementation

Power Supply Requirements

Connect VCC to a stable 3.3V ±10% power supply. Bypass capacitors (0.1µF ceramic) should be placed close to VCC pins. During normal read operation, connect VPP directly to VCC—never leave VPP floating.

Clock Specifications

The configuration clock frequency can operate up to 33 MHz in serial mode. Ensure clock signal integrity with proper termination and routing practices to achieve reliable configuration.

PCB Layout Guidelines

Position the XC1702LPC44C close to the target FPGA to minimize signal trace lengths. Route the DATA and CLK signals as controlled impedance traces for high-frequency applications.

Applications for XC1702LPC44C Configuration PROMs

The XC1702LPC44C serves diverse applications across multiple industries:

• Telecommunications Equipment: Network switches, routers, and base station controllers
• Industrial Automation: PLC systems, motor drives, and process controllers
• Medical Devices: Diagnostic imaging systems and patient monitors
• Aerospace Systems: Avionics, satellite subsystems, and radar processing
• Test and Measurement: Oscilloscopes, spectrum analyzers, and signal generators
• Consumer Electronics: Set-top boxes, gaming systems, and display controllers

Why Choose Rochester Electronics for XC1702LPC44C

Rochester Electronics provides authorized distribution and lifecycle support for the XC1702LPC44C. As an authorized source, Rochester ensures:

• 100% Authentic Products: Full traceability to the original manufacturer
• Extended Availability: Continued supply for end-of-life and obsolete parts
• Quality Assurance: Testing and inspection per industry standards
• Technical Support: Application assistance and documentation access

Summary

The XC1702LPC44C 2-megabit serial configuration PROM delivers reliable FPGA configuration storage in a compact PLCC-44 package. Its 3.3V operation, simple serial interface, and 20-year data retention make it ideal for commercial and industrial FPGA applications. Engineers requiring configuration memory for Xilinx FPGA designs benefit from the XC1702LPC44C’s proven performance and broad compatibility with Spartan, Virtex, and XC4000 FPGA families.

For procurement inquiries, technical specifications, or application support for the XC1702LPC44C configuration PROM, contact your authorized distributor or visit the manufacturer documentation portal.