Meta Description: The XCKU040-L1FFVA1156I is an AMD Xilinx Kintex UltraScale FPGA featuring 530,250 logic cells, 520 I/Os, -1L low-power speed grade, and an industrial-grade 1156-pin FCBGA package. Learn full specs, applications, and where to buy.

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What Is the XCKU040-L1FFVA1156I?

The XCKU040-L1FFVA1156I is a high-performance, low-power Field Programmable Gate Array (FPGA) manufactured by AMD (formerly Xilinx), belonging to the Kintex UltraScale™ family. Built on a 20nm process node, this device is engineered to deliver an exceptional balance of processing power, power efficiency, and signal integrity — making it one of the most capable mid-range FPGAs available today.

The part number breaks down as follows:

Whether you are a design engineer sourcing components for a defense system, a data center architect building a custom accelerator, or a developer prototyping next-generation wireless infrastructure, the XCKU040-L1FFVA1156I is a compelling choice. For a broader overview of the full product lineup, visit our Xilinx FPGA collection page.

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XCKU040-L1FFVA1156I Key Specifications at a Glance

The table below summarizes the critical electrical and physical parameters of the XCKU040-L1FFVA1156I:

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XCKU040-L1FFVA1156I Detailed Technical Features

H3: Logic and Fabric Resources

The XCKU040-L1FFVA1156I packs 530,250 system logic cells and 242,400 configurable logic blocks (CLBs) into its fabric. The UltraScale™ architecture introduces ASIC-like clocking and next-generation routing resources, enabling designers to achieve higher utilization rates compared to prior-generation FPGAs without the routing congestion commonly seen at high utilization.

The device’s fine-granular clock gating, combined with the Vivado® Design Suite’s optimization algorithms, ensures that complex, high-density designs can be implemented with reliable timing closure.

H3: DSP and Signal Processing Performance

With 1,920 DSP48E2 slices, the XCKU040-L1FFVA1156I delivers substantial fixed-point and floating-point compute density. The Kintex UltraScale family as a whole supports up to 8.2 TeraMACs of DSP compute performance, making this device ideal for:

• Digital signal processing (DSP) pipelines
• Software-defined radio (SDR) baseband processing
• Machine learning inference acceleration
• Real-time image and video processing

H3: Memory Resources

The block RAM architecture is dual-port and highly flexible, supporting true dual-port (TDP) and simple dual-port (SDP) modes, enabling efficient FIFO buffers, line buffers, and packet memory in networking and video applications.

H3: I/O and Transceiver Capabilities

The 520 user I/Os across the 1156-pin FCBGA package support a wide range of single-ended and differential signaling standards, including LVDS, LVCMOS, and SSTL. The High-Performance (HP) I/O banks support DDR4 interfacing at up to 2,400 Mb/s.

Kintex UltraScale devices in this package also integrate GTH transceivers capable of multi-gigabit serial communication, with line rates that enable PCIe Gen3, SATA, and high-speed serial backplane connections. This makes the XCKU040-L1FFVA1156I suitable for designs requiring both high I/O density and high-bandwidth serial links.

H3: Power Characteristics of the -1L Speed Grade

The -1L speed grade is specifically designed for power-sensitive applications. It operates with a VCCINT of 0.90V (compared to 0.95V for the standard -1 grade), which results in measurably lower static and dynamic power consumption.

When operated at 0.95V, the -1L device matches the speed performance of a standard -1 grade device. At 0.90V, it trades some performance for power savings. In the Vivado Design Suite, the 0.90V mode is listed as -1LV, making it easy to differentiate during implementation.

The Kintex UltraScale family broadly achieves up to 40% lower power consumption versus previous FPGA generations, and the -1L variant extends these savings even further for thermally constrained or battery-operated environments.

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Package Information: FFVA1156 (FCBGA-1156)

The FFVA1156 package designation refers to a Flip-Chip Fine-pitch Ball Grid Array with 1,156 solder balls arranged at a 1.0mm ball pitch. This is a surface-mount package designed for high-density PCB designs requiring robust signal integrity.

A key advantage of this package is footprint compatibility: designs built around the XCKU040-L1FFVA1156I can be migrated to the Kintex UltraScale+™ family devices in the same A1156 package without PCB re-layout, providing a clear scalability path for future product generations.

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Industrial Temperature Grade: What the “I” Suffix Means

The “I” suffix in XCKU040-L1FFVA1156I indicates the device is screened and guaranteed for operation across the full industrial temperature range: –40°C to +100°C (junction temperature).

This qualification makes the XCKU040-L1FFVA1156I suitable for:

• Aerospace and defense electronics deployed in harsh outdoor or airborne environments
• Industrial automation and motor control systems in factory environments
• Telecommunications infrastructure in outdoor cabinets or remote equipment
• Test and measurement equipment operating across wide temperature variations

Industrial-grade parts undergo more rigorous screening during manufacturing compared to commercial-grade (“C” suffix) devices, resulting in broader guaranteed operating conditions and enhanced reliability.

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XCKU040-L1FFVA1156I Applications

H3: 100G Networking and Packet Processing

The XCKU040-L1FFVA1156I’s transceiver bandwidth and high logic density make it well-suited for 100 Gigabit Ethernet line cards, network interface cards (NICs), and deep packet inspection (DPI) engines. The integrated PCIe Gen3 capability enables direct CPU-to-FPGA communication for host-based processing pipelines.

H3: Data Center Acceleration

Data centers increasingly rely on FPGAs for workload-specific acceleration. The XCKU040-L1FFVA1156I can be deployed as a hardware accelerator for database query processing, compression/decompression, cryptographic operations (AES, SHA), and financial risk analytics — offloading compute from CPUs to purpose-built logic.

H3: Medical Imaging

High-resolution medical imaging systems (CT, MRI, ultrasound) demand real-time signal processing at scale. The XCKU040-L1FFVA1156I’s DSP density and high-bandwidth memory interfaces enable fast acquisition pipeline implementations, image reconstruction, and DICOM data handling.

H3: Next-Generation Wireless Infrastructure (4G/5G)

The DSP and transceiver capabilities of this FPGA align directly with the requirements of massive MIMO baseband processing, beamforming, and fronthaul/backhaul interfacing in 4G LTE and 5G NR radio units. Its low-power speed grade is particularly attractive in base station designs where thermal management is critical.

H3: Defense and Aerospace Systems

The industrial temperature rating, combined with the high logic capacity of the XCKU040-L1FFVA1156I, makes it a strong candidate for radar signal processing, electronic warfare (EW) systems, secure communications, and avionics data management systems.

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Ordering Information and Part Number Variants

The XCKU040 is available in multiple speed grades, packages, and temperature ratings. The table below compares common variants:

The L1 speed grade (this product) offers the same performance as -1 at 0.95V VCCINT, with the added option of dropping to 0.90V for power savings — a unique advantage not available in standard -1 grade parts.

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Development Tools and Ecosystem

H3: Vivado Design Suite

The XCKU040-L1FFVA1156I is fully supported by AMD’s Vivado® Design Suite, which provides synthesis, implementation, timing analysis, and bitstream generation. The device is listed in Vivado as both -1L (at 0.95V) and -1LV (at 0.90V), allowing designers to target the appropriate power-performance point during implementation.

H3: IP Core Library

Vivado’s IP catalog includes hundreds of pre-verified IP cores compatible with the XCKU040-L1FFVA1156I, covering:

• PCIe Gen3 endpoint and root port controllers
• DDR4 memory controllers
• Ethernet MACs (1G, 10G, 100G)
• AXI4 interconnect fabrics
• FIFOs, memory interfaces, and DSP libraries

H3: Xilinx Power Estimator (XPE)

For power budget planning during the design phase, AMD provides the Xilinx Power Estimator (XPE) tool. Once the design is implemented and configured, actual power draw can be measured and compared against XPE estimates for validation.

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Frequently Asked Questions (FAQ)

H3: What is the difference between XCKU040-L1FFVA1156I and XCKU040-1FFVA1156I?

The primary difference is the supply voltage option. The -L1 device can operate at either 0.95V (matching -1 performance) or at the lower 0.90V rail for reduced static and dynamic power. The standard -1 device only operates at 0.95V. The -L1 is also screened for lower maximum static power consumption.

H3: Is the XCKU040-L1FFVA1156I RoHS compliant?

AMD Xilinx FPGA products are generally manufactured to comply with RoHS (Restriction of Hazardous Substances) directives. Always verify the specific compliance status with your distributor at time of purchase.

H3: What PCB design guidance is available for the FFVA1156 package?

AMD publishes UG583 – UltraScale Architecture PCB Design User Guide, which covers signal integrity recommendations, power distribution network (PDN) design, decoupling capacitor placement, and thermal management guidelines for all UltraScale packages including the FFVA1156.

H3: Can I migrate from XCKU040-L1FFVA1156I to a Kintex UltraScale+ device?

Yes. The A1156 package footprint is compatible between Kintex UltraScale and Kintex UltraScale+ devices. This allows board-level reuse while upgrading to a higher-performance or higher-capacity device without PCB redesign.

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Summary: Why Choose the XCKU040-L1FFVA1156I?

The XCKU040-L1FFVA1156I delivers an outstanding combination of logic density, DSP throughput, I/O flexibility, and power efficiency in an industrial-grade package. Key reasons to select this device include:

• 530,250 logic cells for complex, high-utilization designs
• -1L low-power speed grade with dual voltage operation for thermal flexibility
• Industrial temperature rating (–40°C to +100°C) for demanding environments
• 520 user I/Os in a compact 1156-pin FCBGA footprint
• Footprint compatibility with Kintex UltraScale+ for a smooth upgrade path
• Full Vivado Design Suite support with an extensive IP ecosystem

Whether you are designing for networking, defense, medical, or wireless infrastructure applications, the XCKU040-L1FFVA1156I is a proven, versatile platform built on AMD’s industry-leading UltraScale architecture.