The XC4085XLA-O9BG432I is a high-density, industrial-grade Field Programmable Gate Array (FPGA) from the Xilinx XC4000XLA family, now supported under AMD’s Adaptive and Embedded Computing Group. Designed for demanding logic applications, this device offers 85,000 equivalent logic gates, 7,448 logic cells, and a maximum operating frequency of 227 MHz — all in a compact 432-pin BGA package. Whether you are designing for industrial automation, signal processing, or legacy system integration, the XC4085XLA-O9BG432I delivers proven performance and exceptional flexibility.
If you are looking for a trusted, reprogrammable logic solution with both 3.3V and 5V I/O compatibility, explore our full range of Xilinx FPGA products to find the right fit for your design.
What Is the XC4085XLA-O9BG432I?
The XC4085XLA-O9BG432I is part of the XC4000XLA series — one of Xilinx’s most established FPGA families. Built on a refined 0.35 µm CMOS process, this device sits at the upper end of the XLA lineup, offering higher logic density and improved routing efficiency compared to earlier XC4000XL variants. The “I” suffix in the part number designates an industrial temperature grade, making it suitable for environments with wide temperature fluctuations.
The device is distributed by Rochester Electronics LLC, a fully authorized semiconductor distributor specializing in lifecycle management for components like this. Rochester Electronics ensures supply continuity for end-of-life and legacy ICs.
Key Specifications at a Glance
| Parameter |
Specification |
| Part Number |
XC4085XLA-O9BG432I |
| Manufacturer |
Xilinx (now AMD) |
| Distributor |
Rochester Electronics LLC |
| FPGA Family |
XC4000XLA |
| Logic Gates |
85,000 |
| Logic Cells (CLBs) |
7,448 |
| Maximum Frequency |
227 MHz |
| Process Technology |
0.35 µm CMOS |
| Core Supply Voltage |
3.3V |
| Package Type |
BGA (Ball Grid Array) |
| Pin Count |
432 |
| Temperature Grade |
Industrial (-40°C to +100°C) |
| RoHS Compliance |
Lead-Free / RoHS Compliant |
| Configuration |
SRAM-based (reprogrammable) |
Detailed Electrical Characteristics
## Voltage and Power Requirements
| Electrical Parameter |
Value |
| Core Voltage (VCC) |
3.3V |
| I/O Voltage Support |
3.3V LVTTL, 5V TTL |
| PCI Compliance |
Yes (3.3V PCI) |
| Programmable Drive Strength |
Yes |
| Programmable Slew Rate Control |
Yes |
## Logic and Routing Resources
| Resource |
Specification |
| Equivalent Gates |
85,000 |
| Configurable Logic Blocks (CLBs) |
7,448 |
| Flip-Flops |
Embedded per CLB |
| Distributed RAM |
Yes |
| Fast Carry Logic |
Yes |
| Segmented Routing Architecture |
Yes |
## Clocking Resources
| Clock Feature |
Details |
| Global Clock Networks |
Multiple |
| On-Chip Delay-Locked Loop (DLL) |
Yes |
| Maximum System Frequency |
227 MHz |
| Clock Distribution |
Low-skew global network |
Package Information
### 432-Pin BGA Package Details
| Package Parameter |
Value |
| Package Type |
PBGA (Plastic Ball Grid Array) |
| Pin / Ball Count |
432 |
| Package Code |
BG432 |
| Mounting Type |
Surface Mount |
| PCB Footprint |
BGA-432 |
The BGA-432 package provides a compact footprint while supporting the full I/O count required for high-density board designs. The ball grid array mounting style improves electrical performance by shortening signal paths and lowering parasitic inductance compared to traditional QFP packages.
I/O Standards and Compatibility
The XC4085XLA-O9BG432I supports a broad set of I/O standards, making it highly flexible for mixed-signal environments and legacy system integration.
| I/O Standard |
Supported |
| 5V TTL |
✅ Yes |
| 3.3V LVTTL |
✅ Yes |
| PCI (3.3V) |
✅ Yes |
| Programmable Slew Rate |
✅ Yes |
| Programmable Drive Strength |
✅ Yes |
| JTAG Boundary Scan (IEEE 1149.1) |
✅ Yes |
Configuration and Programming
### SRAM-Based Configuration
The XC4085XLA-O9BG432I uses SRAM-based configuration storage, meaning the device must be loaded with a bitstream each time it powers up. This approach enables unlimited reprogramming cycles, making the part ideal for iterative development and field upgrades. The configuration bitstream is typically stored in an external PROM or loaded via JTAG.
### Supported Configuration Modes
| Configuration Mode |
Supported |
| JTAG (IEEE 1149.1) |
✅ Yes |
| Master Serial |
✅ Yes |
| Slave Serial |
✅ Yes |
| SelectMAP (Parallel) |
✅ Yes |
### Development Tool Support
The XC4085XLA-O9BG432I is supported by legacy Xilinx design tools including ISE WebPACK and the Xilinx Foundation Series. Note that AMD’s current Vivado Design Suite does not support the XC4000XLA family, so legacy tool environments are required for new development targeting this device.
Industrial Temperature Grade (-I Suffix)
The “-I” suffix designates the industrial temperature grade, covering an operating range of -40°C to +100°C. This makes the XC4085XLA-O9BG432I suitable for environments that go beyond standard commercial operating conditions.
| Temperature Grade |
Operating Range |
| Commercial (C) |
0°C to +85°C |
| Industrial (I) |
-40°C to +100°C |
Applications of the XC4085XLA-O9BG432I
The XC4085XLA-O9BG432I is well-suited for a wide range of industries and use cases:
### Industrial Automation and Control
The industrial temperature range and robust I/O compatibility make this FPGA an ideal fit for PLCs, motion controllers, and real-time process control systems that operate in harsh environments.
### Embedded Signal Processing
With 7,448 configurable logic cells and a 227 MHz maximum frequency, the device is capable of implementing FIR/IIR filters, FFT engines, and other DSP algorithms in embedded hardware applications.
### Legacy System Maintenance and Repair
Many telecommunications, defense, and aerospace systems built in the 1990s and early 2000s rely on the XC4000XLA family. Rochester Electronics distributes the XC4085XLA-O9BG432I specifically to support these lifecycle extension programs.
### Networking and Communications Equipment
PCI compliance and multi-standard I/O support make this FPGA a practical choice for protocol conversion, packet inspection, and network interface card (NIC) development.
### Prototyping and Development
The SRAM-based configuration enables rapid design iteration without the permanent commitment of antifuse or flash-based devices.
| Industry |
Typical Use Case |
| Industrial Automation |
PLC logic, motor control, HMI interface |
| Telecommunications |
Protocol bridging, line card logic |
| Aerospace & Defense |
Legacy avionics support, radar processing |
| Consumer Electronics |
Embedded control, video processing |
| Medical Devices |
Signal acquisition, data path control |
| Automotive |
Body electronics, infotainment (legacy) |
Ordering Information and Part Number Decoder
Understanding the part number helps verify you are ordering the correct variant.
| Part Number Field |
Meaning |
| XC |
Xilinx device prefix |
| 4085 |
Device density (~85,000 gates) |
| XLA |
XC4000XLA sub-family (3.3V core, 0.35µm) |
| -O9 |
Speed grade (-09 ns, standard performance) |
| BG |
BGA package type |
| 432 |
432-pin count |
| I |
Industrial temperature grade |
Full Part Number: XC4085XLA-O9BG432I
Why Choose the XC4085XLA-O9BG432I?
#### Proven Logic Density
At 85,000 equivalent gates and 7,448 CLBs, this FPGA delivers substantial programmable logic capacity for designs that don’t require the overhead of modern high-end devices.
#### Dual-Voltage I/O Flexibility
Support for both 5V TTL and 3.3V LVTTL I/O standards simplifies interfacing between legacy and modern circuit boards, reducing the need for additional level-shifting components.
#### Guaranteed Supply via Rochester Electronics
Rochester Electronics provides fully authorized, traceable stock of lifecycle and end-of-life semiconductors. Purchasing through authorized channels ensures device authenticity and reduces the risk of counterfeit components.
#### Unlimited Reprogrammability
As an SRAM-based FPGA, the XC4085XLA-O9BG432I can be reprogrammed an unlimited number of times, supporting ongoing field updates and design refinements without hardware replacement.
#### Industrial-Grade Reliability
The -I temperature suffix ensures reliable operation across the full industrial temperature range (-40°C to +100°C), supporting deployment in demanding real-world environments.
Related Part Numbers (XC4085XLA Family)
| Part Number |
Package |
Pins |
Temp Grade |
| XC4085XLA-09BG432C |
BGA |
432 |
Commercial |
| XC4085XLA-O9BG432I |
BGA |
432 |
Industrial |
| XC4085XLA-09BG560C |
BGA |
560 |
Commercial |
| XC4085XLA-09HQ304C |
HQFP |
304 |
Commercial |
| XC4085XLA-09HQ240C |
HQFP |
240 |
Commercial |
| XC4085XLA-08BG432C |
BGA |
432 |
Commercial (faster) |
Frequently Asked Questions (FAQ)
Q: Is the XC4085XLA-O9BG432I still in production? A: This device is in a lifecycle/legacy status. Rochester Electronics maintains authorized stock to support ongoing design needs and board-level repairs.
Q: What design software is compatible with this FPGA? A: The XC4085XLA series is supported by Xilinx ISE WebPACK and the older Foundation design tools. AMD Vivado does not support the XC4000XLA family.
Q: Can the XC4085XLA-O9BG432I be reprogrammed in the field? A: Yes. Using the JTAG interface or an external configuration PROM, the device can be reconfigured in-system without physical removal.
Q: What is the difference between the -09BG432C and -O9BG432I versions? A: The “C” suffix indicates a commercial temperature grade (0°C to +85°C), while the “I” suffix indicates an industrial temperature grade (-40°C to +100°C). All other electrical specifications remain the same.
Q: Does this FPGA support PCI bus interfaces? A: Yes. The XC4085XLA-O9BG432I is compliant with the 3.3V PCI specification, enabling direct integration into PCI-based system architectures.
