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Home > Products > Integrated Circuits (ICs) > Memory > Configuration PROMs for FPGAs

AMD XC18V01PC20I

Name: XC18V01PC20I
Brand: AMD
SKU: XC18V01PC20I
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: XC18V01PC20I

Manufacturer:: AMD

Category:: Configuration PROMs for FPGAs

Package:: 20-LCC (J-Lead)

Datasheet:: XC18V01PC20I.pdf

Description:: IC PROM SER I-TEMP 3.3V 20-PLCC

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Product details

Overview

XC18V01PC20I from Xilinx is a 1-Mbit in-system programmable 3.3V configuration PROM designed to store and serially load bitstreams into Xilinx FPGAs in Master Serial mode. It delivers 20,000 program/erase cycles, operates across –40°C to +85°C industrial temperature range, supports IEEE 1149.1 JTAG boundary-scan, and uses a 20-pin PLCC (PC20) package with 5V-tolerant I/O pins.

For engineers reviewing the XC18V01PC20I datasheet, pinout, applications, or equivalent options, this device serves as a nonvolatile, reprogrammable FPGA configuration memory with dual-mode (serial/parallel) support, JTAG-initiated configuration via CF pin, and cascading capability for multi-FPGA or extended-bitstream systems.

Technical Context

The XC18V01PC20I implements a flash-based memory array with integrated JTAG TAP controller and configurable serial/parallel interface logic. Its internal address counter advances on rising CLK edges when CE is low and OE/RESET is high, enabling synchronous data output aligned to FPGA CCLK.

It supports two primary configuration modes: serial (D0 only, up to 33 MHz) and parallel (D0–D7, up to 264 Mb/s at 33 MHz), selected via JTAG-accessible control register. The CF pin-routed to pin 7 in PC20 packages when configured for serial mode-enables JTAG-triggered FPGA reset and configuration initiation without power cycling.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Capacity	1,048,576 bits (1 Mbit) - stores full configuration bitstream for XCV50, XCV100, XC2S50, and similar entry/mid-tier Xilinx FPGAs.
Programming Endurance	20,000 program/erase cycles - enables repeated design iteration and field firmware updates without PROM replacement.
Operating Temperature	–40°C to +85°C - qualified for industrial environments including motor control, industrial automation, and outdoor communications equipment.
I/O Voltage Tolerance	5V-tolerant inputs - interfaces directly with 5V, 3.3V, or 2.5V logic without level shifters, simplifying mixed-voltage board design.
Configuration Clock Speed	Up to 33 MHz serial clock - supports fast FPGA startup time (<5 ms for typical Spartan-II designs) and reduces system boot latency.
Data Retention	Minimum 20 years - ensures long-term reliability of stored configuration data in unpowered storage or deployed systems.
JTAG Compliance	Fully compliant with IEEE Std 1149.1 - enables standardized in-system programming, boundary-scan testing, and secure configuration verification.

Pinout & Package

XC18V01PC20I is housed in a 20-pin plastic leaded chip carrier (PLCC) package, designated PC20. This surface-mount package features a 0.050-inch pitch, square outline, and gull-wing leads suitable for industrial reflow and wave soldering processes.

Pin	Circuit Role	Design Meaning
D0	Serial Data Output	Drives FPGA DIN pin in Master Serial mode; active only when CE = Low and OE/RESET = High.
CLK	Configuration Clock Input	Accepts FPGA-generated CCLK; increments internal address counter on each rising edge during active configuration.
OE/RESET	Output Enable / Asynchronous Reset	Bidirectional open-drain pin; pulled high via 4.7kΩ to release FPGA INIT and start configuration; held low during power-up reset.
CE	Chip Enable Input	High disables outputs and resets address counter; used for standby power reduction (e.g., driven by FPGA DONE signal).
CEO	Chip Enable Output	Open-drain output that drives CE of next PROM in cascade chain upon terminal count overflow; enables daisy-chained bitstream expansion.
TCK/TMS/TDI/TDO	JTAG Test Access Port	Standard 4-wire boundary-scan interface supporting ISP programming, security bit setting, IDCODE read, and CONFIG command execution.
CF/D4*	Configuration Initiation Output	Functionally mapped to pin 7 in PC20 package when CF→D4 option is enabled; pulses low 300–500 ns to trigger FPGA PROGRAM pin and initiate configuration.
VCCINT / VCCO	Power Supply Inputs	VCCINT = 3.3V core logic supply; VCCO = 3.3V or 2.5V I/O buffer supply - allows flexible I/O voltage selection independent of core voltage.
GND	Ground Reference	Two dedicated ground pins (pins 11 and 18) provide low-impedance return paths for digital and I/O circuits.

Key Features

Feature	Design Value
In-system programmability via JTAG	Enables field firmware updates and design validation without socket removal or external programmers - critical for deployed industrial controllers.
Read security bit protection	Prevents unauthorized JTAG readback of configuration bitstream; erasure is required to reset the bit - safeguards IP in customer-facing hardware.
Dual configuration interface modes	Serial (D0-only) and parallel (D0–D7) modes selectable via JTAG register - supports both cost-sensitive single-FPGA systems and high-throughput multi-FPGA platforms.
Cascadable architecture	CEO-to-CE chaining allows seamless extension beyond 1 Mbit using identical or higher-capacity XC18V00 family members - eliminates custom glue logic for large bitstreams.
5V-tolerant I/O with 2.5V/3.3V output drive	Interoperates with legacy 5V peripherals and modern low-voltage FPGAs without external level translation - reduces BOM count and layout complexity.

Applications

Industrial PLC Configuration Storage	Telecom Baseband FPGA Boot Memory
Use Scenario: Storing and loading FPGA configuration in programmable logic controllers operating in harsh factory-floor environments with wide temperature swings and electrical noise. IC Role / Device Role / Timing Role: Nonvolatile configuration memory providing deterministic, repeatable FPGA initialization at power-on or hot-restart; synchronized to FPGA CCLK in Master Serial mode. Use Value: Ensures reliable system recovery after brownouts or EMI-induced resets, leveraging 20,000-cycle endurance and –40°C to +85°C operation without derating.	Use Scenario: Loading bitstreams into Xilinx Virtex-E or Spartan-IIE FPGAs used in wireless baseband processing units requiring rapid, repeatable reconfiguration during protocol handover or feature activation. IC Role / Device Role / Timing Role: JTAG-configurable PROM acting as trusted boot source; CF pin enables software-triggered reconfiguration without FPGA power cycle or external reset circuitry. Use Value: Reduces system downtime during field upgrades by enabling in-service bitstream reload via standard JTAG infrastructure already present for test and debug.
Medical Imaging FPGA Initialization	Aerospace Avionics BIT Support
Use Scenario: Providing certified, tamper-resistant configuration storage for Xilinx XCV100E FPGAs in MRI subsystems where configuration integrity directly impacts image fidelity and regulatory compliance. IC Role / Device Role / Timing Role: Secure configuration PROM with read-inhibited JTAG access; stores encrypted bitstream validated at startup before enabling FPGA logic. Use Value: Meets IEC 62304 safety requirements through hardware-enforced bitstream confidentiality and 20-year data retention - eliminating need for external encryption ICs.	Use Scenario: Supporting Built-In Test (BIT) routines in flight-critical avionics FPGAs (e.g., XCV200E) where configuration must be verified pre-flight and reloaded after fault isolation. IC Role / Device Role / Timing Role: Boundary-scan-enabled PROM used for both configuration and structural test; IDCODE and USERCODE registers provide traceable device identity and version tracking. Use Value: Enables DO-254-compliant verification via IEEE 1149.1 test vectors, reducing qualification effort and supporting configuration audit trails across aircraft service life.

Industrial PLC Configuration Storage

Telecom Baseband FPGA Boot Memory

Use Scenario: Storing and loading FPGA configuration in programmable logic controllers operating in harsh factory-floor environments with wide temperature swings and electrical noise.

IC Role / Device Role / Timing Role: Nonvolatile configuration memory providing deterministic, repeatable FPGA initialization at power-on or hot-restart; synchronized to FPGA CCLK in Master Serial mode.

Use Value: Ensures reliable system recovery after brownouts or EMI-induced resets, leveraging 20,000-cycle endurance and –40°C to +85°C operation without derating.

Use Scenario: Loading bitstreams into Xilinx Virtex-E or Spartan-IIE FPGAs used in wireless baseband processing units requiring rapid, repeatable reconfiguration during protocol handover or feature activation.

IC Role / Device Role / Timing Role: JTAG-configurable PROM acting as trusted boot source; CF pin enables software-triggered reconfiguration without FPGA power cycle or external reset circuitry.

Use Value: Reduces system downtime during field upgrades by enabling in-service bitstream reload via standard JTAG infrastructure already present for test and debug.

Medical Imaging FPGA Initialization

Aerospace Avionics BIT Support

Use Scenario: Providing certified, tamper-resistant configuration storage for Xilinx XCV100E FPGAs in MRI subsystems where configuration integrity directly impacts image fidelity and regulatory compliance.

IC Role / Device Role / Timing Role: Secure configuration PROM with read-inhibited JTAG access; stores encrypted bitstream validated at startup before enabling FPGA logic.

Use Value: Meets IEC 62304 safety requirements through hardware-enforced bitstream confidentiality and 20-year data retention - eliminating need for external encryption ICs.

Use Scenario: Supporting Built-In Test (BIT) routines in flight-critical avionics FPGAs (e.g., XCV200E) where configuration must be verified pre-flight and reloaded after fault isolation.

IC Role / Device Role / Timing Role: Boundary-scan-enabled PROM used for both configuration and structural test; IDCODE and USERCODE registers provide traceable device identity and version tracking.

Use Value: Enables DO-254-compliant verification via IEEE 1149.1 test vectors, reducing qualification effort and supporting configuration audit trails across aircraft service life.

Equivalent & Alternatives

The following parts are listed as comparable options for similar FPGA configuration PROM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
XC18V01SO20I	Same 1-Mbit capacity and JTAG functionality, but in 20-pin SOIC package - lacks PLCC mechanical robustness and thermal mass for high-vibration environments.	Preferred for space-constrained PCBs with automated pick-and-place assembly; unsuitable for manual rework or high-shock applications.	Select XC18V01SO20I only when board-level vibration is minimal and rework accessibility is not required.
XC18V02PC20I	2-Mbit capacity (double density), identical PC20 package, pinout, and timing - requires no PCB change but occupies more memory space per bitstream.	Used when future FPGA upgrades demand larger bitstreams or when consolidating multiple smaller PROMs into one footprint.	Choose XC18V02PC20I if headroom for next-generation FPGA configurations is needed and cost premium is acceptable.

Compared with XC18V01SO20I, the XC18V01PC20I offers superior mechanical reliability in industrial motion control; compared with XC18V02PC20I, it provides optimal cost-per-bit for fixed-configuration XCV50/XC2S50 deployments without over-provisioning memory.

Availability

XC18V01PC20I is available at Aetrix Electronics and suitable for industrial automation, medical imaging equipment, and aerospace avionics requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.

Supply support for XC18V01PC20I includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Xilinx, now part of AMD, is a pioneer in programmable logic and FPGA technology, delivering high-performance, adaptable silicon solutions for aerospace, industrial, and communications markets since 1984.

The XC18V00 series was engineered specifically to simplify and secure FPGA configuration in mission-critical systems - emphasizing in-system reprogrammability, JTAG-based security, and industrial-grade reliability.

FAQ

What is the memory capacity of the XC18V01PC20I and which FPGAs does it support?

The XC18V01PC20I provides 1,048,576 bits (1 Mbit) of configuration memory, sufficient for Xilinx FPGAs including XCV50, XCV100, XC2S50, XC2S100, and XC3S200. Its capacity matches the bitstream size of these devices in Master Serial mode, ensuring single-PROM configuration without cascading.

How does the CF pin function on the XC18V01PC20I, and is it available in the PC20 package?

The CF (Configuration) pin on the XC18V01PC20I is routed to pin 7 via the CF→D4 programming option - a factory-configurable setting that repurposes D4 as CF in serial-mode operation. When pulsed low via JTAG CONFIG instruction, it asserts the FPGA PROGRAM pin to initiate reset and configuration without power cycling.

Can the XC18V01PC20I be used in parallel configuration mode, and what are the pin requirements?

No - the XC18V01PC20I in PC20 package supports serial mode only. Parallel mode (D0–D7) requires the 44-pin VQFP or PLCC packages. Pin 7 is assigned to CF/D4 in PC20, and D1–D7 are not bonded out; therefore, parallel data output is physically unavailable on this variant.

What is the role of the CEO pin on the XC18V01PC20I, and how is it used in cascaded configurations?

The CEO (Chip Enable Output) pin on the XC18V01PC20I is an open-drain output that goes low when the internal address counter reaches terminal count and OE/RESET is high. In cascaded setups, it drives the CE input of the next PROM, enabling automatic handoff of configuration data - essential for multi-FPGA or large-bitstream systems.

Does the XC18V01PC20I support read protection, and how is it implemented?

Yes - the XC18V01PC20I supports JTAG read security via a user-settable read security bit. When enabled, it inhibits readback of the configuration bitstream through TDI/TDO; the only way to clear the bit is full device erase. This protects intellectual property in production hardware without requiring external encryption.

XC18V01PC20I Specifications

Product attributes: Attribute value

Manufacturer:: AMD

Series:: -

Package/Case:: 20-LCC (J-Lead)

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Programmable Type:: In System Programmable

Memory Size:: 1Mb

Voltage - Supply:: 3V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C

Mounting Type:: Surface Mount

Supplier Device Package:: 20-PLCC (9x9)

XC18V01PC20I FAQ

1.How can I place an order for XC18V01PC20I through Aetrix?

Please submit a Request for Quotation (RFQ) for XC18V01PC20I on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for XC18V01PC20I reliable?

The price and inventory of XC18V01PC20I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XC18V01PC20I is usually 5 days.

3.What payment methods are accepted for XC18V01PC20I?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XC18V01PC20I transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for XC18V01PC20I?

XC18V01PC20I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your XC18V01PC20I order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for XC18V01PC20I?

For technical support, including XC18V01PC20I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XC18V01PC20I requirements.

6.How does Aetrix verify that XC18V01PC20I is sourced from the original manufacturer or authorized distributors?

All XC18V01PC20I products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that XC18V01PC20I meets industry standards.

7.What is the process for return or replacement of XC18V01PC20I?

All XC18V01PC20I units undergo pre-shipment inspection (PSI). If there is an issue with XC18V01PC20I, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The XC18V01PC20I part is unused and in its original packaging.

Return procedure for XC18V01PC20I:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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