The XC4028XLA-09BG352C is a high-performance field-programmable gate array (FPGA) from Xilinx’s XC4000XLA family. Designed for demanding logic applications, this device delivers reprogrammable digital logic with low power consumption and a generous I/O count — making it a reliable choice for engineers sourcing legacy and production-grade Xilinx FPGA components.
What Is the XC4028XLA-09BG352C?
The XC4028XLA-09BG352C is a member of the Xilinx XC4000XLA device family, originally produced by AMD (formerly Xilinx). The part is currently available through authorized distributors such as Rochester Electronics, ensuring long-term supply for existing designs. It is housed in a 352-pin Ball Grid Array (BGA) package and operates in the commercial temperature range.
This FPGA is well-suited for applications requiring flexible, reprogrammable logic at moderate gate counts, including communications, industrial control, and embedded processing systems.
XC4028XLA-09BG352C Key Specifications
The table below summarizes the most critical electrical and physical parameters of the XC4028XLA-09BG352C.
| Parameter |
Value |
| Manufacturer |
AMD (Xilinx) |
| Part Number |
XC4028XLA-09BG352C |
| Series |
XC4000XLA |
| Logic Family |
FPGA |
| Number of Logic Cells / Gates |
~28,000 (equivalent) |
| Supply Voltage (VCC) |
3.3 V |
| Speed Grade |
-09 (9 ns) |
| Package Type |
BGA (Ball Grid Array) |
| Package / Case |
352-BGA |
| Number of I/Os |
Up to 192 |
| Operating Temperature |
0°C ~ 85°C (Commercial) |
| Configuration Interface |
SelectMAP, Serial |
| Technology |
SRAM-based |
| Mounting Type |
Surface Mount |
XC4028XLA-09BG352C Part Number Decoder
Understanding the part number helps engineers confirm the exact variant during procurement. The table below breaks down each segment of XC4028XLA-09BG352C.
| Segment |
Meaning |
| XC |
Xilinx FPGA product prefix |
| 4028 |
Logic capacity (~28,000 gates equivalent) |
| XLA |
XC4000 Extended Low-power Architecture variant |
| 09 |
Speed grade: 9 ns internal propagation delay |
| BG |
Package code: Ball Grid Array (BGA) |
| 352 |
Pin count: 352 balls |
| C |
Temperature grade: Commercial (0°C to 85°C) |
XC4028XLA-09BG352C Electrical Characteristics
Absolute Maximum Ratings
| Parameter |
Rating |
| Supply Voltage (VCC) |
–0.5 V to +4.0 V |
| Input Voltage |
–0.5 V to VCC + 0.5 V |
| Storage Temperature |
–65°C to +150°C |
| Junction Temperature |
125°C (max) |
Operating Conditions
| Parameter |
Min |
Typical |
Max |
Unit |
| VCC Supply Voltage |
3.135 |
3.3 |
3.465 |
V |
| Operating Temperature |
0 |
25 |
85 |
°C |
| ICC Standby Current |
— |
— |
50 |
mA |
| IOL Output Current (per pin) |
— |
— |
24 |
mA |
| IOH Output Current (per pin) |
— |
— |
-24 |
mA |
XC4028XLA FPGA Architecture Overview
Configurable Logic Blocks (CLBs)
The XC4028XLA architecture is built around a matrix of Configurable Logic Blocks (CLBs). Each CLB contains:
- Two 4-input Look-Up Tables (LUTs) for combinatorial logic
- Two flip-flops for sequential logic
- Fast carry logic for arithmetic operations
- Multiplexers and local routing
I/O Blocks (IOBs)
The device features programmable I/O Blocks that support multiple I/O standards including TTL and CMOS logic levels. Each IOB includes input and output registers, weak pull-up/pull-down resistors, and slew-rate control.
Routing Resources
The XC4000XLA family uses a hierarchical routing structure with local, long-line, and global interconnects. Dedicated global clock networks ensure low-skew distribution of clock signals across the entire device.
XC4028XLA-09BG352C Package Information
The 352-BGA package provides a compact, high-density footprint suitable for PCB designs where space is at a premium.
| Package Attribute |
Detail |
| Package Type |
BGA (Ball Grid Array) |
| Total Ball Count |
352 |
| Pitch |
1.0 mm |
| Body Size |
27 × 27 mm (approx.) |
| Mounting |
Surface Mount Technology (SMT) |
| Lead Finish |
SnPb (standard) |
XC4028XLA-09BG352C Configuration and Programming
The XC4028XLA-09BG352C uses SRAM-based configuration, meaning the device must be configured at power-up using a bitstream stored in an external configuration PROM or loaded via a host processor.
Supported Configuration Modes
| Configuration Mode |
Description |
| Master Serial |
FPGA reads bitstream from a serial PROM |
| Slave Serial |
External controller clocks in the bitstream |
| SelectMAP (Parallel) |
8-bit parallel configuration for fast loading |
| JTAG (Boundary Scan) |
IEEE 1149.1 compliant test and configuration |
Typical Applications for the XC4028XLA-09BG352C
The XC4028XLA-09BG352C is widely used in the following application areas:
- Industrial automation – Motor control, PLCs, and sensor interfaces
- Telecommunications – Protocol conversion and signal processing
- Embedded systems – Custom co-processors and logic glue
- Test and measurement equipment – Pattern generation and data acquisition
- Military/aerospace (modified grades) – Legacy design maintenance
- Legacy design sustaining – Long-life production support via authorized distributors
XC4028XLA-09BG352C vs. Related Xilinx FPGA Variants
When selecting the right part for your design, comparing speed grades and package options is essential.
| Part Number |
Gates (Equiv.) |
Speed Grade |
Package |
Pins |
Temp Grade |
| XC4028XLA-07BG352C |
~28,000 |
–07 (7 ns) |
BGA |
352 |
Commercial |
| XC4028XLA-09BG352C |
~28,000 |
–09 (9 ns) |
BGA |
352 |
Commercial |
| XC4028XLA-09HQ304C |
~28,000 |
–09 (9 ns) |
PQFP |
304 |
Commercial |
| XC4036XLA-09BG352C |
~36,000 |
–09 (9 ns) |
BGA |
352 |
Commercial |
Ordering and Availability
The XC4028XLA-09BG352C is classified as an end-of-life (EOL) part by AMD/Xilinx. It remains available through authorized long-term supply distributors such as Rochester Electronics, which manufactures and stocks these devices to support legacy designs in production.
| Ordering Attribute |
Detail |
| Status |
End-of-Life (EOL) – Available via Rochester Electronics |
| Manufacturer Part Number |
XC4028XLA-09BG352C |
| RoHS Compliance |
Contact distributor for specific lot compliance |
| Lead Time |
Contact distributor |
| Minimum Order Quantity |
Contact distributor |
Why Choose the XC4028XLA-09BG352C?
The XC4028XLA-09BG352C remains a compelling choice for engineers maintaining or extending existing designs:
- Proven SRAM architecture with reliable reprogrammability across the product lifecycle
- High I/O density (up to 192 user I/Os) in a compact 352-BGA footprint
- 3.3 V operation compatible with standard logic families
- Commercial temperature range suitable for a broad range of industrial environments
- Long-term supply through authorized distributors, reducing supply chain risk for legacy programs
Frequently Asked Questions (FAQ)
Q: What is the XC4028XLA-09BG352C used for? It is used as a reprogrammable logic device in industrial, communications, and embedded applications requiring custom digital logic without the cost of custom ASICs.
Q: Is the XC4028XLA-09BG352C still in production? The device is end-of-life at AMD/Xilinx but remains available through authorized second-source distributors like Rochester Electronics.
Q: What is the difference between XC4028XLA-07 and XC4028XLA-09? The numbers refer to the speed grade. The -07 variant has a faster propagation delay (7 ns) compared to the -09 (9 ns). Both are functionally equivalent and use the same bitstream.
Q: What programming software supports the XC4028XLA-09BG352C? The device is supported by Xilinx ISE Design Suite (legacy). Modern Vivado does not support the XC4000 family; ISE 14.7 is the recommended toolchain.
Q: What is the supply voltage for the XC4028XLA-09BG352C? The device operates from a 3.3 V core supply voltage.
