The XC18V02-PC44C is a high-performance 2-Megabit in-system programmable configuration PROM manufactured by AMD (formerly Xilinx). This 3.3V FLASH-based memory device provides a reliable and cost-effective solution for storing and configuring Xilinx FPGA bitstreams. Designed for commercial-grade applications, the XC18V02-PC44C offers exceptional flexibility with dual configuration modes, JTAG support, and cascading capabilities.
XC18V02-PC44C Product Overview
The XC18V02-PC44C belongs to the XC18V00 series of in-system programmable configuration PROMs. This device is specifically engineered to simplify FPGA configuration while providing robust reprogramming capabilities. Engineers and designers choose this configuration memory for its versatility, supporting both serial and parallel configuration interfaces.
Why Choose the XC18V02-PC44C Configuration PROM?
This configuration PROM stands out in embedded system design due to its combination of high endurance, industrial-grade reliability, and seamless integration with Xilinx FPGA families. The device eliminates the need for external configuration controllers, reducing system complexity and BOM costs.
XC18V02-PC44C Technical Specifications
| Parameter |
Specification |
| Part Number |
XC18V02-PC44C |
| Manufacturer |
AMD (Xilinx) |
| Memory Density |
2 Mbit (2,097,152 bits) |
| Memory Type |
FLASH EEPROM |
| Package Type |
44-Pin PLCC (PC44) |
| Supply Voltage (VCCINT) |
3.3V (3.0V – 3.6V) |
| Output Voltage |
3.3V or 2.5V Selectable |
| Temperature Range |
0°C to +70°C (Commercial) |
| Interface |
Parallel / Serial |
| Mounting Type |
Through-Hole |
XC18V02-PC44C Electrical Characteristics
| Parameter |
Min |
Typ |
Max |
Unit |
| Supply Voltage (VCCINT) |
3.0 |
3.3 |
3.6 |
V |
| Input Voltage (5V Tolerant) |
-0.5 |
— |
5.5 |
V |
| Access Time |
— |
— |
20 |
ns |
| Serial Clock Frequency |
— |
— |
33 |
MHz |
| Parallel Throughput |
— |
— |
264 |
Mb/s |
| Standby Current (ISB) |
— |
100 |
— |
µA |
| Program/Erase Endurance |
— |
— |
20,000 |
Cycles |
| Data Retention |
20 |
— |
— |
Years |
Key Features of XC18V02-PC44C
In-System Programmability (ISP)
The XC18V02-PC44C supports in-system programming, allowing engineers to update FPGA configuration bitstreams without removing the device from the PCB. This capability significantly reduces development time and enables field upgrades for deployed systems.
Dual Configuration Modes
This configuration PROM offers two distinct operating modes:
- Serial Mode: Supports slow and fast serial configuration with clock speeds up to 33 MHz
- Parallel Mode: Delivers high-speed parallel configuration at up to 264 Mb/s using 8-bit data bus
IEEE 1149.1 JTAG Boundary-Scan Support
Full compliance with IEEE Std 1149.1 boundary-scan standard enables:
- In-system programming via JTAG interface
- JTAG-initiated FPGA configuration
- Board-level testing and debugging capabilities
5V-Tolerant I/O Interface
The XC18V02-PC44C features 5V-tolerant I/O pins that accept input signals at 5V, 3.3V, and 2.5V voltage levels. This mixed-voltage compatibility simplifies integration with various logic families and legacy systems.
Cascading Capability
Multiple XC18V02-PC44C devices can be cascaded using the CEO (Chip Enable Output) signal to store longer bitstreams or multiple configuration patterns. The cascaded architecture maintains compatibility with other XC18V00 family members and XC17V00 one-time programmable PROMs.
XC18V02-PC44C Pin Configuration
| Pin Name |
Pin Type |
Description |
| D[0:7] |
Output |
8-Bit Parallel Data Output |
| CLK |
Input |
Configuration Clock Input |
| CE |
Input |
Chip Enable (Active Low) |
| OE |
Input |
Output Enable (Active Low) |
| CEO |
Output |
Chip Enable Output (Cascade) |
| CF |
Input |
Configuration Flow Control |
| RESET/OE |
Input |
Reset / Output Enable |
| TDI |
Input |
JTAG Test Data Input |
| TDO |
Output |
JTAG Test Data Output |
| TMS |
Input |
JTAG Test Mode Select |
| TCK |
Input |
JTAG Test Clock |
| VCCINT |
Power |
3.3V Core Supply Voltage |
| GND |
Power |
Ground |
Compatible FPGA Families
The XC18V02-PC44C is compatible with a wide range of Xilinx FPGA families:
| FPGA Family |
Configuration Mode |
Compatibility |
| Spartan-II |
Master Serial / Slave Parallel |
✓ Full Support |
| Spartan-IIE |
Master Serial / Slave Parallel |
✓ Full Support |
| Virtex |
Master Serial / SelectMAP |
✓ Full Support |
| Virtex-E |
Master Serial / SelectMAP |
✓ Full Support |
| Virtex-II |
Master Serial / Slave SelectMAP |
✓ Full Support |
| Virtex-II Pro |
Master Serial / Slave SelectMAP |
✓ Full Support |
XC18V02-PC44C Package Information
| Attribute |
Specification |
| Package Type |
PLCC-44 (Plastic Leaded Chip Carrier) |
| Pin Count |
44 Pins |
| Package Dimensions |
16.6mm × 16.6mm × 4.6mm |
| Lead Pitch |
1.27mm |
| Lead-Free Option |
Available (Pb-Free) |
| Moisture Sensitivity Level |
MSL 3 |
Ordering Information
| Part Number |
Temperature |
Package |
Speed Grade |
| XC18V02-PC44C |
0°C to +70°C |
44-Pin PLCC |
Commercial |
| XC18V02-PC44I |
-40°C to +85°C |
44-Pin PLCC |
Industrial |
| XC18V02-VQ44C |
0°C to +70°C |
44-Pin VQFP |
Commercial |
| XC18V02-VQ44I |
-40°C to +85°C |
44-Pin VQFP |
Industrial |
XC18V02-PC44C Application Scenarios
Telecommunications Equipment
The XC18V02-PC44C is widely used in telecom infrastructure for base station equipment, network switches, and routers where reliable FPGA configuration is critical.
Industrial Automation
In industrial control systems, this configuration PROM provides dependable bitstream storage for PLCs, motor controllers, and process automation equipment.
Consumer Electronics
High-volume consumer applications benefit from the cost-effective reprogramming capabilities of the XC18V02-PC44C for video processing and display systems.
Medical Devices
Medical imaging and diagnostic equipment utilize this PROM for its data retention reliability and industrial temperature support (I-grade variant).
Development Tool Support
The XC18V02-PC44C is fully supported by Xilinx ISE Foundation software packages, providing:
- Bitstream generation and formatting
- JTAG programming interface
- Device configuration verification
- Multi-device cascading support
XC18V02-PC44C vs Alternative Configuration Solutions
| Feature |
XC18V02-PC44C |
SPI Flash |
Parallel Flash |
| In-System Programmable |
Yes |
Yes |
Limited |
| JTAG Programming |
Yes |
No |
No |
| FPGA Direct Interface |
Native |
Requires Controller |
Requires Controller |
| Cascading Support |
Built-in |
Manual |
Manual |
| Configuration Speed |
Up to 264 Mb/s |
Variable |
Variable |
| Endurance |
20,000 Cycles |
100,000 Cycles |
100,000 Cycles |
Frequently Asked Questions
What is the maximum configuration speed of XC18V02-PC44C?
The XC18V02-PC44C supports serial configuration at up to 33 MHz and parallel configuration throughput of up to 264 Mb/s when operating at 33 MHz clock frequency.
Can XC18V02-PC44C be programmed in-circuit?
Yes, the device supports full in-system programmability through the JTAG interface using standard Xilinx download cables and programming software.
Is XC18V02-PC44C RoHS compliant?
Lead-free (Pb-free) package options are available for RoHS compliance requirements.
What is the data retention period?
The XC18V02-PC44C guarantees minimum 20 years of data retention under normal operating conditions.
