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

AMD XC18V02PC44I

Name: XC18V02PC44I
Brand: AMD
SKU: XC18V02PC44I
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: XC18V02PC44I

Manufacturer:: AMD

Category:: Configuration PROMs for FPGAs

Package:: 44-LCC (J-Lead)

Datasheet:: XC18V02PC44I.pdf

Description:: IC PROM SER I-TEMP 3.3V 44-PLCC

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Product details

Overview

XC18V02PC44I from Xilinx is a 2-Mbit in-system programmable 3.3V configuration PROM designed to store and serially/parallel load bitstreams into Xilinx FPGAs. It supports Master Serial (up to 33 MHz), Slave-Parallel (up to 264 Mb/s), IEEE 1149.1 JTAG programming, 20,000 program/erase cycles, and operates across –40°C to +85°C industrial temperature range.

For engineers reviewing the XC18V02PC44I datasheet, pinout, applications, or equivalent options, key selection considerations include dual-mode configuration interface timing, JTAG-initiated FPGA reset via CF pin, 5V-tolerant I/O compatibility with legacy systems, and cascading support for multi-FPGA or large-bitstream designs.

Technical Context

The XC18V02PC44I implements a flash-based nonvolatile memory architecture with integrated JTAG TAP controller supporting CONFIG, IDCODE, USERCODE, and boundary-scan instructions. Its dual configuration modes are controlled via internal user register accessible through JTAG, with serial mode as default.

It features dedicated control logic for FPGA synchronization: OE/RESET ties to FPGA INIT for coordinated reset, CEO enables daisy-chained cascading, and CF provides JTAG-triggered PROGRAM pulse (300–500 ns) to initiate reconfiguration without power cycle. All I/O pins are 5V-tolerant, and output drivers support selectable 3.3V or 2.5V VCCO.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory capacity	2,097,152 bits (2 Mbit) - stores full configuration bitstream for mid-size FPGAs like XC2V250 or XC3S400.
Configuration interface	Serial Slow/Fast (≤33 MHz) and Parallel (≤33 MHz, 264 Mb/s) - enables flexible FPGA boot timing and bandwidth matching.
Endurance	20,000 program/erase cycles - supports field firmware updates and design iteration without PROM replacement.
Operating temperature	–40°C to +85°C - qualified for industrial embedded systems with extended thermal margins.
I/O voltage tolerance	5V-tolerant inputs - interoperates with 5V logic families while powered from 3.3V supply, eliminating level shifters.
Data retention	Minimum 20 years - ensures long-term reliability in unattended or mission-critical deployments.
JTAG compliance	Fully compliant with IEEE Std 1149.1 - enables standardized in-system programming, boundary-scan test, and security-controlled read protection.

Pinout & Package

XC18V02PC44I is housed in a 44-pin Plastic Leaded Chip Carrier (PLCC) package (PC44), with 32 functional pins and 12 no-connect (NC) terminals. Pin layout follows standard PLCC numbering (1–44 clockwise from index corner), and matches the pinout defined for 44-pin PLCC in DS026 v4.1.

Pin/Terminal	Circuit Role	Design Meaning
D0	Serial data output	Drives FPGA DIN in Master/Slave Serial mode; active only when CE and OE/RESET are asserted low.
D1–D7	Parallel data outputs	Drive FPGA D[0:7] in Slave-Parallel/SelectMAP mode; high-impedance in serial mode - may be left unconnected.
CLK	Configuration clock input	Accepts CCLK from FPGA (Master modes) or external oscillator (Slave modes); increments address counter on rising edge.
OE/RESET	Output enable / FPGA INIT signal	Bidirectional open-drain pin tied to FPGA INIT; drives low to reset address counter and hold FPGA in reset pre-configuration.
CE	Chip enable input	High disables outputs and resets address counter; used for standby power reduction or DONE-driven gating.
CEO	Cascade enable output	Open-drain output pulsed low after terminal count to enable next PROM in daisy chain; enables seamless multi-PROM expansion.
CF	JTAG-configurable FPGA PROGRAM pin	Pulsed low once (300–500 ns) by JTAG CONFIG instruction to trigger FPGA reconfiguration without power cycle.
TCK/TMS/TDI/TDO	JTAG Test Access Port	Standard 4-wire IEEE 1149.1 interface for in-system programming, verification, and security bit management.
VCCINT	Core logic supply	3.3V supply for internal flash and control logic; pins 17, 35, 38 (PC44) - not connected for IDCODE 0503x093h variants.
VCCO	I/O buffer supply	3.3V or 2.5V supply for output drivers and input buffers; pins 8, 16, 26, 36 (PC44) - sets output voltage level and input threshold.

Key Features

Feature	Design Value
In-system programmability via JTAG	Enables field firmware updates and bitstream revisions without removing the device from PCB - eliminates socket handling and rework.
Dual configuration modes (serial/parallel)	Supports both resource-constrained (serial, 1-pin data) and high-throughput (parallel, 8-pin data) FPGA boot paths - adaptable to FPGA family and board layout constraints.
JTAG CONFIG instruction with CF pin	Provides hardware-level FPGA reset and configuration initiation directly from JTAG host - enables remote or automated reconfiguration without external logic.
Read security bit	Prevents unauthorized JTAG readback of stored bitstream; once set, only full erase resets the bit - protects IP in deployed systems.
Cascadable CEO/CE architecture	Allows up to six XC18V04 devices (or mixed XC18Vxx) to be chained for >24 Mbit storage - supports complex multi-FPGA or high-density Virtex-II/Virtex-4 configurations.

Applications

Industrial FPGA Configuration	Automated Test Equipment (ATE)
Use Scenario: Configuring XCV200E FPGAs in motor control PLCs operating continuously at 70°C ambient. IC Role / Device Role / Timing Role: Stores and delivers verified bitstream on power-up; OE/RESET synchronizes with FPGA INIT to ensure deterministic startup. Use Value: 20,000-cycle endurance supports over-the-air bitstream updates during maintenance windows; industrial temp rating eliminates derating concerns.	Use Scenario: Reconfiguring multiple XC2VP7 FPGAs on a high-speed digital pattern generator board during test sequence changes. IC Role / Device Role / Timing Role: Provides parallel 8-bit data path (264 Mb/s) to meet sub-100ms FPGA reload requirements; cascaded CEO/CE enables synchronized multi-device load. Use Value: Eliminates need for external FPGA configuration controllers; JTAG CONFIG instruction allows software-triggered reload without host CPU intervention.
Secure Communications Module	Avionics Reconfigurable Logic
Use Scenario: Storing encrypted FPGA bitstreams in military radio transceivers where IP theft is a threat. IC Role / Device Role / Timing Role: Acts as tamper-resistant configuration vault; read security bit prevents JTAG extraction of sensitive logic images. Use Value: Security bit is irreversible without full erase - enforces secure provisioning workflow and prevents reverse engineering in fielded units.	Use Scenario: Booting radiation-tolerant XC2V1000 FPGAs in satellite payload subsystems requiring in-orbit reconfiguration. IC Role / Device Role / Timing Role: Delivers configuration under single-event upset (SEU)-resilient JTAG protocol; 20-year data retention meets mission lifetime requirements. Use Value: No external configuration controller needed - reduces BOM count and single-point failure risk in redundant avionics architectures.

Industrial FPGA Configuration

Automated Test Equipment (ATE)

Use Scenario: Configuring XCV200E FPGAs in motor control PLCs operating continuously at 70°C ambient.

IC Role / Device Role / Timing Role: Stores and delivers verified bitstream on power-up; OE/RESET synchronizes with FPGA INIT to ensure deterministic startup.

Use Value: 20,000-cycle endurance supports over-the-air bitstream updates during maintenance windows; industrial temp rating eliminates derating concerns.

Use Scenario: Reconfiguring multiple XC2VP7 FPGAs on a high-speed digital pattern generator board during test sequence changes.

IC Role / Device Role / Timing Role: Provides parallel 8-bit data path (264 Mb/s) to meet sub-100ms FPGA reload requirements; cascaded CEO/CE enables synchronized multi-device load.

Use Value: Eliminates need for external FPGA configuration controllers; JTAG CONFIG instruction allows software-triggered reload without host CPU intervention.

Secure Communications Module

Avionics Reconfigurable Logic

Use Scenario: Storing encrypted FPGA bitstreams in military radio transceivers where IP theft is a threat.

IC Role / Device Role / Timing Role: Acts as tamper-resistant configuration vault; read security bit prevents JTAG extraction of sensitive logic images.

Use Value: Security bit is irreversible without full erase - enforces secure provisioning workflow and prevents reverse engineering in fielded units.

Use Scenario: Booting radiation-tolerant XC2V1000 FPGAs in satellite payload subsystems requiring in-orbit reconfiguration.

IC Role / Device Role / Timing Role: Delivers configuration under single-event upset (SEU)-resilient JTAG protocol; 20-year data retention meets mission lifetime requirements.

Use Value: No external configuration controller needed - reduces BOM count and single-point failure risk in redundant avionics architectures.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
XC18V02PC20I	Same 2-Mbit capacity and logic, but in 20-pin SOIC/PLCC package with no dedicated CF pin; CF function routed to D4 only if parallel mode unused.	Limited to serial-only use in compact layouts; unsuitable for JTAG-triggered reconfiguration in space-constrained designs.	Select XC18V02PC20I only when board area is critical and CF-initiated reconfiguration is unnecessary.
XC17V02PC44	One-time programmable (OTP) 2-Mbit PROM in same PC44 package; lacks JTAG ISP, security bit, and CF functionality.	Used in cost-sensitive, production-only deployments where field updates are prohibited and security is enforced by physical write-protection.	Choose XC17V02PC44 for fixed-function, high-volume manufacturing where reprogrammability adds no value.

Compared with XC18V02PC20I, XC18V02PC44I offers full JTAG-configurable CF pin and parallel interface support; compared with XC17V02PC44, it provides field-upgradable flash memory and cryptographic bitstream protection - making it optimal for development, prototyping, and secure field-deployed systems.

Availability

XC18V02PC44I is available at Aetrix Electronics and suitable for industrial control systems, automated test equipment, secure communications modules, and avionics reconfigurable logic requiring stable component supply and long-lifecycle support.

Supply support for XC18V02PC44I 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 adaptive computing solutions for aerospace, industrial, and communications markets.

The XC18V00 series was designed specifically to provide reliable, in-system reprogrammable configuration storage for Xilinx FPGA families - enabling rapid design iteration, secure IP deployment, and scalable bitstream management across Virtex, Spartan, and CoolRunner platforms.

FAQ

What is the primary function of the XC18V02PC44I in an FPGA-based system?

The XC18V02PC44I serves as a nonvolatile configuration PROM that stores and delivers the FPGA bitstream during power-up or reconfiguration. It interfaces directly with Xilinx FPGAs in Master Serial, Slave Serial, or Slave-Parallel modes, and supports JTAG-based in-system programming. The XC18V02PC44I ensures deterministic, repeatable FPGA initialization while enabling field updates and secure bitstream management - critical for industrial and aerospace applications where reliability and IP protection are paramount.

How does the CF pin on the XC18V02PC44I enable FPGA reconfiguration?

The CF (CONFIGURE) pin on the XC18V02PC44I is controlled exclusively via the JTAG CONFIG instruction. When executed, this instruction pulses CF low for 300–500 ns, which must be connected to the FPGA's PROGRAM pin to trigger a full hardware reset and subsequent reconfiguration. This capability allows the XC18V02PC44I to initiate FPGA reload without power cycling or external logic - a feature unique to the XC18V00 family and essential for remote or automated system recovery. Unlike general-purpose I/O, CF has no alternate function and is not available on 20-pin packages.

Can the XC18V02PC44I be used with FPGAs from other manufacturers?

No, the XC18V02PC44I is specifically designed and characterized for use with Xilinx FPGAs, including Virtex, Spartan, CoolRunner, and early Artix families. Its timing parameters (e.g., access time relative to CCLK, CEO assertion delay), pin functions (CF, CEO, OE/RESET), and JTAG instruction set (CONFIG, IDCODE mapping) are aligned to Xilinx configuration protocols. While electrical compatibility (5V-tolerant I/O, 3.3V operation) may permit connection to non-Xilinx devices, functional interoperability - particularly for automatic configuration sequencing and JTAG-initiated reload - is not guaranteed or supported.

What is the significance of the "I" suffix in XC18V02PC44I?

Within the XC18V00 family, the "I" suffix denotes industrial temperature grade operation (–40°C to +85°C), distinguishing it from commercial-grade parts (no suffix, 0°C to +70°C). The XC18V02PC44I is fully tested and guaranteed to meet all specifications - including program/erase endurance, data retention, and AC timing - across this extended range. This qualification makes the XC18V02PC44I suitable for harsh environments such as factory automation, outdoor telecom infrastructure, and transportation electronics where thermal stability is critical.

How does the XC18V02PC44I support cascading for larger configuration memory requirements?

The XC18V02PC44I supports daisy-chain cascading via its CEO (Chip Enable Output) and CE (Chip Enable) pins. When the internal address counter reaches terminal count, CEO goes low to enable the CE input of the next XC18V00 device in the chain. Clock (CLK) and data (D0–D7) lines are shared across all devices, allowing seamless extension of total configuration memory - e.g., two XC18V02PC44I devices provide 4 Mbit, sufficient for XC2V500 or XC3S1000 FPGAs. Cascading preserves timing integrity and requires no additional glue logic, as specified in Xilinx DS026 and validated across Virtex-II and Spartan-III platforms.

XC18V02PC44I Specifications

Product attributes: Attribute value

Manufacturer:: AMD

Series:: -

Package/Case:: 44-LCC (J-Lead)

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Programmable Type:: In System Programmable

Memory Size:: 2Mb

Voltage - Supply:: 3V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C

Mounting Type:: Surface Mount

Supplier Device Package:: 44-PLCC (16.59x16.59)

XC18V02PC44I FAQ

1.How can I place an order for XC18V02PC44I through Aetrix?

Please submit a Request for Quotation (RFQ) for XC18V02PC44I 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 XC18V02PC44I reliable?

The price and inventory of XC18V02PC44I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XC18V02PC44I is usually 5 days.

3.What payment methods are accepted for XC18V02PC44I?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XC18V02PC44I transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for XC18V02PC44I?

XC18V02PC44I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your XC18V02PC44I 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 XC18V02PC44I?

For technical support, including XC18V02PC44I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XC18V02PC44I requirements.

6.How does Aetrix verify that XC18V02PC44I is sourced from the original manufacturer or authorized distributors?

All XC18V02PC44I 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 XC18V02PC44I meets industry standards.

7.What is the process for return or replacement of XC18V02PC44I?

All XC18V02PC44I units undergo pre-shipment inspection (PSI). If there is an issue with XC18V02PC44I, 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 XC18V02PC44I part is unused and in its original packaging.

Return procedure for XC18V02PC44I:

1.Submit a request within 90 days.

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

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