The XC17128EPC is a high-reliability one-time programmable (OTP) serial configuration PROM manufactured by Xilinx (now AMD). This 128K-bit configuration memory device is specifically designed to store and deliver FPGA bitstreams, making it an essential component for Xilinx FPGA configuration in embedded systems, industrial automation, telecommunications, and consumer electronics applications.

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XC17128EPC Product Overview

The XC17128EPC belongs to the XC1700 family of configuration PROMs, providing engineers with an easy-to-use and cost-effective solution for storing large Xilinx FPGA configuration bitstreams. This device operates at 5V and comes in a compact 20-pin PLCC package, offering excellent reliability with guaranteed 20-year data retention.

Key Product Specifications at a Glance

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XC17128EPC Features and Benefits

One-Time Programmable Configuration Memory

The XC17128EPC provides OTP read-only memory specifically engineered to store configuration bitstreams of Xilinx FPGA devices. This ensures secure and permanent storage of your FPGA design, protecting your intellectual property from unauthorized modification.

Simple FPGA Interface Design

One of the standout features of the XC17128EPC is its simple interface to the FPGA. The device requires only one user I/O pin for basic configuration, significantly reducing PCB complexity and design time. This streamlined interface makes it ideal for space-constrained applications.

Cascadable Architecture for Multiple Bitstreams

The XC17128EPC supports cascading multiple devices for storing longer or multiple bitstreams. By using the CEO (Chip Enable Output) to drive the CE (Chip Enable) input of subsequent devices, engineers can expand storage capacity seamlessly across multiple PROMs in a daisy-chain configuration.

Programmable Reset Polarity

The device features programmable reset polarity supporting both active-high and active-low configurations. This flexibility ensures compatibility with different FPGA solutions and system requirements without additional logic circuitry.

Fast Configuration Support

The XC17128E series supports fast configuration modes, enabling rapid FPGA initialization during system startup. This is critical for applications requiring quick boot times and minimal power-on delays.

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XC17128EPC Detailed Technical Specifications

Electrical Characteristics

Timing Parameters

Package Information

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XC17128EPC Pin Configuration and Description

Pinout Table

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XC17128EPC Operating Modes

Master Serial Configuration Mode

In Master Serial mode, the FPGA generates a configuration clock that drives the XC17128EPC PROM. After a short access time following the rising clock edge, data appears on the PROM DATA output pin connected to the FPGA DIN pin. The FPGA generates the appropriate number of clock pulses to complete the configuration, then disables the PROM.

Slave Serial Configuration Mode

When operating in Slave Serial mode, both the XC17128EPC PROM and the FPGA must be clocked by an incoming external signal. This mode is useful when synchronization with external system timing is required or when multiple devices share a common clock source.

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XC17128EPC Compatible FPGA Families

The XC17128EPC configuration PROM is compatible with various Xilinx FPGA families:

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XC17128EPC Application Areas

Industrial Automation Systems

The XC17128EPC provides reliable FPGA configuration storage for programmable logic controllers (PLCs), motor drives, and industrial control systems requiring robust operation in demanding environments.

Telecommunications Equipment

Network switches, routers, and communication infrastructure equipment benefit from the fast configuration times and reliable data retention of the XC17128EPC PROM.

Consumer Electronics

Cost-effective FPGA configuration for consumer devices including set-top boxes, gaming peripherals, and audio/video equipment leverages the compact 20-pin PLCC package.

Medical Devices

Medical instrumentation and diagnostic equipment requiring stable, long-term configuration storage utilize the guaranteed 20-year data retention of the XC17128EPC.

Aerospace and Defense

Military and aerospace applications benefit from the radiation-tolerant characteristics and high reliability of the XC17128EPC family for mission-critical systems.

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XC17128EPC Part Number Variants

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XC17128EPC Programming and Design Support

Software Compatibility

The XC17128EPC is fully supported by Xilinx development tools:

• Xilinx ISE Design Suite: Complete design flow support
• Xilinx Alliance Software: Bitstream generation and PROM file creation
• Foundation Series Tools: Legacy design support

Programming Methods

Device programming can be accomplished through:

1. Standard Hex Format: Xilinx software compiles FPGA design files into standard Hex format
2. Commercial PROM Programmers: Compatible with leading third-party programmers
3. In-System Programming: Supported through JTAG interface in certain configurations

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XC17128EPC Ordering Information

How to Order

Packaging Options

• Tube packaging for manual assembly
• Tape and reel for automated pick-and-place
• Tray packaging for high-volume orders

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Why Choose XC17128EPC for Your FPGA Design

The XC17128EPC offers a proven, reliable solution for FPGA configuration storage with these advantages:

1. Cost-Effective: Competitive pricing for high-volume production
2. Proven Reliability: 20-year guaranteed data retention
3. Easy Integration: Simple serial interface reduces design complexity
4. Compact Package: 20-pin PLCC saves PCB space
5. Cascadable: Expand capacity by chaining multiple devices
6. Wide Software Support: Compatible with standard Xilinx design tools
7. Multiple Temperature Grades: Options for commercial and industrial applications

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XC17128EPC Frequently Asked Questions

What is the memory capacity of the XC17128EPC?

The XC17128EPC provides 128K-bit (128,000 bits) of one-time programmable configuration memory, sufficient for smaller Xilinx FPGA configurations.

Can multiple XC17128EPC devices be cascaded?

Yes, the XC17128EPC features a CEO (Chip Enable Output) pin specifically designed for cascading multiple devices to store longer bitstreams or multiple configurations.

What is the operating voltage of the XC17128EPC?

The XC17128EPC operates at 5V nominal supply voltage with a tolerance range of 4.5V to 5.5V.

Is the XC17128EPC RoHS compliant?

Lead-free, RoHS-compliant versions of the XC17128EPC are available for environmentally conscious designs.

What is the maximum clock frequency for the XC17128EPC?

The XC17128EPC supports clock frequencies up to 10MHz for fast FPGA configuration.

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Related Products and Alternatives

Engineers may also consider these related Xilinx configuration PROMs:

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For technical support, datasheets, and additional documentation, please contact your authorized Xilinx/AMD distributor or visit the official AMD technical documentation portal.