The XCKU040-1FBVA900I is a high-performance Xilinx FPGA from AMD’s Kintex UltraScale family, built on an advanced 20nm process node. Engineered for demanding signal-processing workloads, this device delivers an industry-leading balance of price, performance, and power efficiency. Whether you are designing for 100G networking, medical imaging, video processing, or wireless infrastructure, the XCKU040-1FBVA900I provides the compute density and I/O flexibility needed to accelerate your next-generation design.

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What Is the XCKU040-1FBVA900I?

The XCKU040-1FBVA900I is part of Xilinx’s Kintex UltraScale FPGA series — a mid-range family optimized for the highest signal-processing bandwidth available at its price point. The device is packaged in a compact 900-pin FCBGA (Flip-Chip Ball Grid Array) and operates at a core voltage of 0.95V, making it well-suited for power-sensitive, space-constrained board designs.

The part number breaks down as follows:

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XCKU040-1FBVA900I Key Specifications

The table below summarizes the essential electrical and logic characteristics of the XCKU040-1FBVA900I as derived from AMD/Xilinx datasheet documentation.

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XCKU040-1FBVA900I Detailed Feature Overview

## High-Density Logic Fabric with 424,200 Logic Cells

The XCKU040-1FBVA900I integrates 424,200 logic cells within the Kintex UltraScale FPGA architecture. This logic density is achieved through AMD’s UltraScale ASIC-like clocking architecture, which delivers up to 90% utilization efficiency — significantly higher than previous FPGA generations. The fine-grained clock gating fabric minimizes dynamic power, while the hierarchical interconnect reduces routing congestion and shortens design closure time.

## DSP Performance: 1,920 DSP Slices at 725 MHz

Signal-processing applications demand dedicated multiply-accumulate (MAC) hardware. The XCKU040-1FBVA900I contains 1,920 DSP48E2 slices, each capable of performing 27×18-bit signed multiplications. At the rated clock speed of 725 MHz, the device achieves over 2.7 TMAC/s of raw DSP throughput — essential for applications such as:

• FIR and IIR digital filters
• FFT engines and spectral analysis
• Radar and lidar signal chains
• Machine learning inference accelerators

## 21.1 Mb Embedded Block RAM with ECC

Embedded memory is tightly coupled to the logic fabric through 21.1 Mb of block RAM (BRAM), organized as 36Kb dual-port blocks. Each BRAM supports independent read and write clocks, error-correction coding (ECC), and cascade chaining for deep FIFO implementations. For latency-sensitive designs, the UltraScale architecture allows BRAMs to be placed in close physical proximity to DSP cascades, minimizing pipeline depth.

## 20 GTH Transceivers for High-Speed Serial Connectivity

One of the most compelling features of the XCKU040-1FBVA900I is its complement of 20 GTH (Gigabit Transceiver High-speed) channels, each capable of line rates from 500 Mb/s to 16.3 Gb/s. These transceivers support a wide range of industry-standard protocols out of the box:

## Dual PCIe Gen3 Hard IP Blocks

The XCKU040-1FBVA900I includes two hard PCIe Gen3 x8 blocks, providing plug-and-play, Xilinx-verified PCI Express connectivity without consuming programmable logic resources. Each PCIe block supports PCIe endpoint and root port configurations, Advanced Error Reporting (AER), and power management (ASPM). This makes the device an ideal FPGA for PCIe-based FPGA acceleration cards, NVMe storage controllers, and high-speed data acquisition boards.

## Industrial Temperature Grade: −40°C to +100°C

The “-I” suffix in XCKU040-1FBVA900I designates the industrial temperature grade, screened and guaranteed for reliable operation across the full −40°C to +100°C junction temperature range. This qualification is critical for embedded computing in:

• Aerospace and defense avionics
• Industrial automation and robotics
• Outdoor telecommunications equipment
• Medical imaging systems requiring long-term stability

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Package and Mechanical Information

The 900-pin FBVA package is footprint-compatible with the XCKU035-1FBVA900I and shares partial pin compatibility with the 1156-pin FFVA variant, enabling scalable design migration across the Kintex UltraScale portfolio.

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Power Supply Requirements

Proper power sequencing and supply rail design are essential for reliable XCKU040-1FBVA900I operation. The table below summarizes the main power domains:

AMD recommends using the Xilinx Power Estimator (XPE) tool to accurately size power supplies based on your specific design’s resource utilization and switching activity.

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Supported Communication Interfaces

The XCKU040-1FBVA900I supports a comprehensive set of hard and soft I/O standards, enabling system-level integration with standard components and buses:

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Target Applications for XCKU040-1FBVA900I

The combination of high DSP throughput, powerful transceivers, and industrial-grade reliability makes the XCKU040-1FBVA900I a strong fit across multiple vertical markets:

#### 100G Networking and Data Center

The dual PCIe Gen3 hard blocks and 20 GTH transceivers enable direct implementation of 100G MAC/PCS logic, making this device a natural fit for network interface cards, programmable packet processing engines, and FPGA-based SmartNICs.

#### Wireless Infrastructure (4G LTE / 5G NR)

JESD204B and CPRI-compliant transceivers allow direct interfacing to RF data converters in remote radio heads (RRH) and distributed unit (DU) architectures. The high DSP slice count supports large MIMO beamforming and DFE algorithms.

#### Medical Imaging

High-bandwidth DDR4 memory interfaces combined with BRAM and DSP density make the XCKU040-1FBVA900I well-suited for real-time image reconstruction in ultrasound, CT, and MRI systems. The industrial temperature grade supports long lifecycle requirements common in medical devices.

#### Defense and Aerospace (COTS)

The industrial temperature screening, JTAG security features, and proven UltraScale architecture make the XCKU040-1FBVA900I a viable COTS (Commercial Off-the-Shelf) solution for signal intelligence (SIGINT), electronic warfare (EW), and radar signal processing boards.

#### 8K/4K Video Processing

With 1,920 DSP slices and large BRAM blocks, the device can accommodate codec engines (HEVC/H.265, AV1), multi-channel video routing, and real-time image enhancement pipelines for broadcast, security, and industrial machine vision cameras.

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Design Tool Support

The XCKU040-1FBVA900I is fully supported by AMD’s Vivado Design Suite, which provides:

• RTL synthesis and implementation (place & route)
• Timing closure and static timing analysis (STA)
• IP Integrator for block design assembly
• Power analysis and optimization
• High-Level Synthesis (HLS) via Vitis HLS
• Partial reconfiguration support
• In-system debug via ILA (Integrated Logic Analyzer) and VIO

For production deployments, AMD’s Vitis unified software platform enables host-side application development alongside FPGA kernel development, supporting both Alveo-style deployment and custom board flows.

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Ordering Information

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Frequently Asked Questions (FAQ)

Q: What is the difference between XCKU040-1FBVA900I and XCKU040-2FBVA900I? The “-1” and “-2” designations refer to speed grades. The -2 speed grade offers higher maximum clock frequencies and tighter timing margins. The -1 grade is the standard commercial/industrial speed grade, while -2 is the mid-level grade. Both share the same logic capacity and package.

Q: Is the XCKU040-1FBVA900I the same as the XCKU040-1FBVA900C? No. The “-I” suffix indicates the Industrial temperature range (−40°C to +100°C), while “-C” indicates the Commercial range (0°C to +85°C). Always confirm the temperature grade matches your application’s operating environment.

Q: Does the XCKU040-1FBVA900I support partial reconfiguration? Yes. The Kintex UltraScale architecture supports Partial Reconfiguration (PR) through the Vivado Design Suite, allowing sections of the FPGA fabric to be reprogrammed at runtime without disrupting the rest of the design.

Q: What memory interfaces can I implement with this device? The XCKU040-1FBVA900I supports DDR4, DDR3L, and LPDDR3 memory controllers using the Xilinx MIG (Memory Interface Generator) IP. Up to four independent DDR4 memory channels can be implemented depending on I/O bank allocation.

Q: Can I migrate from XCKU035-1FBVA900I to XCKU040-1FBVA900I? Yes. The two devices share the same 900-pin FBVA package with pin-compatible I/O assignments, making XCKU035 → XCKU040 migration straightforward with minimal PCB changes. The XCKU040 provides additional logic cells, DSP slices, and BRAM resources over the XCKU035.

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Summary

The XCKU040-1FBVA900I is a production-proven, industrial-grade FPGA from AMD’s Kintex UltraScale family. With 424,200 logic cells, 1,920 DSP slices, 20 GTH transceivers, and dual PCIe Gen3 hard blocks — all housed in a 900-pin FCBGA at 0.95V — it offers an exceptional combination of compute density, high-speed connectivity, and power efficiency for mid-range FPGA applications. Full tool support through Vivado and Vitis ensures rapid design closure and a clear path to production.