The XC18V01SO20C is a high-performance, in-system programmable configuration PROM manufactured by Xilinx (now AMD). This 1-megabit serial configuration memory device provides a reliable and cost-effective solution for storing FPGA configuration bitstreams. Designed for seamless integration with Xilinx FPGA families, the XC18V01SO20C delivers exceptional performance in industrial and commercial applications.
Key Features of the XC18V01SO20C Configuration PROM
The XC18V01SO20C stands out as an essential component for FPGA-based system designs. This configuration PROM offers electrically erasable and reprogrammable memory, eliminating the need for UV erasure or device replacement during development and field updates.
Why Choose the XC18V01SO20C for Your Design?
Engineers choose the XC18V01SO20C for its proven reliability and straightforward implementation. The device supports both serial and parallel configuration modes, providing flexibility across various FPGA architectures. With a guaranteed endurance of 20,000 program/erase cycles and 20-year minimum data retention, this PROM ensures long-term system reliability.
XC18V01SO20C Technical Specifications
| Parameter |
Specification |
| Part Number |
XC18V01SO20C |
| Manufacturer |
Xilinx (AMD) |
| Memory Density |
1 Megabit (1Mbit) |
| Memory Type |
In-System Programmable PROM |
| Configuration Mode |
Serial / Parallel |
| Supply Voltage (VCCINT) |
3.3V |
| I/O Voltage Compatibility |
2.5V / 3.3V |
| Package Type |
20-Pin SOIC |
| Operating Temperature |
-40°C to +85°C |
| Temperature Grade |
Commercial (C) |
Electrical Characteristics of XC18V01SO20C
| Parameter |
Min |
Typ |
Max |
Unit |
| Supply Voltage (VCCINT) |
3.0 |
3.3 |
3.6 |
V |
| Input Low Voltage (VIL) |
– |
– |
0.8 |
V |
| Input High Voltage (VIH) |
2.0 |
– |
– |
V |
| Output Low Voltage (VOL) |
– |
– |
0.4 |
V |
| Output High Voltage (VOH) |
2.4 |
– |
– |
V |
| Program/Erase Cycles |
– |
– |
20,000 |
Cycles |
| Data Retention |
20 |
– |
– |
Years |
XC18V01SO20C Pinout Configuration
| Pin Number |
Pin Name |
Function |
| 1 |
D4/CF |
Data Output 4 / Cascade Function |
| 2 |
CEO |
Chip Enable Output (Cascade) |
| 3 |
CLK |
Configuration Clock Input |
| 4 |
D3 |
Data Output 3 |
| 5 |
D2 |
Data Output 2 |
| 6 |
D1 |
Data Output 1 |
| 7 |
D0 |
Data Output 0 (Serial Data) |
| 8 |
GND |
Ground |
| 9 |
OE/RESET |
Output Enable / Reset Input |
| 10 |
CE |
Chip Enable Input |
| 11 |
TDI |
JTAG Test Data Input |
| 12 |
TMS |
JTAG Test Mode Select |
| 13 |
TCK |
JTAG Test Clock |
| 14 |
TDO |
JTAG Test Data Output |
| 15-19 |
NC |
No Connect |
| 20 |
VCC |
Power Supply (3.3V) |
Compatible FPGA Families
The XC18V01SO20C configuration PROM supports multiple Xilinx FPGA families for versatile design implementation.
| FPGA Family |
Compatibility |
Configuration Bits |
| Spartan-II |
✓ Supported |
Up to 1M |
| Spartan-IIE |
✓ Supported |
Up to 1M |
| Virtex |
✓ Supported |
Up to 1M |
| Virtex-E |
✓ Supported |
Up to 1M |
| Virtex-II |
✓ Supported |
Up to 1M |
| XC4000 Series |
✓ Supported |
Up to 1M |
XC18V01SO20C Programming and Configuration
In-System Programming Capabilities
The XC18V01SO20C supports IEEE 1149.1 JTAG boundary-scan interface for convenient in-system programming. Engineers can program the device directly on the PCB using Xilinx iMPACT software and compatible download cables, streamlining both prototyping and production processes.
Configuration Modes Supported
The device operates in multiple configuration modes to accommodate different system architectures. In Master Serial mode, the FPGA generates the configuration clock while the PROM supplies data synchronously. Slave modes allow external clock sources for greater system flexibility.
Cascading Multiple PROMs
For applications requiring larger configuration storage, multiple XC18V01SO20C devices can be cascaded together. The CEO (Chip Enable Output) pin connects to the CE input of the subsequent PROM in the chain, enabling seamless expansion of configuration memory capacity.
XC18V01SO20C Package Information
| Specification |
Details |
| Package Type |
SOIC-20 (Small Outline IC) |
| Package Code |
SO20 |
| Lead Count |
20 Pins |
| Body Width |
7.50mm |
| Lead Pitch |
1.27mm |
| Mounting Type |
Surface Mount (SMD) |
| RoHS Status |
Non-Pb-Free (Pb-Free version: XC18V01SOG20C) |
Applications for XC18V01SO20C Configuration PROM
The XC18V01SO20C serves diverse industrial and commercial applications where FPGA configuration storage is essential.
| Application Sector |
Use Case |
| Industrial Automation |
PLC and motion control systems |
| Telecommunications |
Network equipment and routers |
| Medical Devices |
Diagnostic and imaging equipment |
| Automotive |
ADAS and infotainment systems |
| Aerospace & Defense |
Avionics and radar systems |
| Consumer Electronics |
Video processing and display controllers |
Ordering Information
| Part Number |
Description |
Package |
Temperature |
| XC18V01SO20C |
1Mbit Config PROM |
20-SOIC |
Commercial |
| XC18V01SOG20C |
1Mbit Config PROM (Pb-Free) |
20-SOIC |
Commercial |
| XC18V01SO20I |
1Mbit Config PROM |
20-SOIC |
Industrial |
Why the XC18V01SO20C Remains a Trusted Choice
The XC18V01SO20C continues to be a preferred configuration memory solution for legacy FPGA designs and new applications requiring proven reliability. Its combination of adequate memory density, flexible programming options, and robust electrical specifications makes it ideal for designs where stability and long-term availability matter most.
Whether you are maintaining existing systems or developing new FPGA-based products, the XC18V01SO20C delivers the performance and dependability that engineers expect from Xilinx configuration memory solutions.