FPGA & adaptive SoC databook · online editionRev. 2026.10

XCKU115

AMDKintex UltraScale

The XCKU115 is a Kintex UltraScale FPGA from AMD, built on a 20 nm process. It provides 663,360 LUT6 look-up tables (1,451,000 system logic cells), 1,326,720 flip-flops, 75.9 Mb of block RAM and 5,520 DSP slices. It offers up to 832 user I/O pins and 64 GTH/GTY transceivers at up to 16.3 Gb/s, with hard PCI Express Gen3 blocks. It is available in 7 packages, from the A1517 (40 × 40 mm) to the B2104 (47.5 × 47.5 mm). Temperature grades: commercial, extended, industrial. Designs are built with AMD Vivado.

663,360LUTs (LUT6)
5,520DSP slices
75.9 MbBlock RAM
832Max. user I/O
64Transceivers (16.3 Gb/s)

Specifications

VendorAMD
FamilyKintex UltraScale
SeriesUltraScale
Process20 nm
Configuration memorySRAM
Look-up tables (LUT6)663,360
   Logic block6-input look-up table, fracturable into two LUT5 with shared inputs
LUT4 equivalent (approx.)≈1,061,376
System logic cells1,451,000
Flip-flops1,326,720
Distributed RAM18,360 Kb
Block RAM75.9 Mb (2160 × 36 Kb)
DSP (DSP slice)5,520
Clock management tiles24
Max. user I/O832
   HP I/O676
Differential pairs384
GTH/GTY transceivers64 × 16.3 Gb/s
PCI Express6× Gen3
Analog / monitorSystem Monitor
Design toolAMD Vivado

Packages

PackageSize (mm)Pitch (mm)User I/OTransceivers
A151740 × 401.062448
D151740 × 401.033864
B176042.5 × 42.51.070252
A210447.5 × 47.51.083252
B210447.5 × 47.51.070264
D192445 × 451.083252
F192445 × 451.072864

Package names are shown as in the selection guide; the full ordering code adds speed grade and temperature (see the data sheet).

Speed and temperature grades

Temperature gradeJunction rangeSpeed grades
Commercial (C)0 to 85 °C-1
Extended (E)0 to 100 °C-2, -3
Industrial (I)−40 to 100 °C-1, -1L, -2

Alternatives to the XCKU115

Closest matches in other families and vendors by logic, DSP, memory, I/O and transceivers. Check pin compatibility and tools before migrating.

DeviceLUTsVendor logicDSPBlock RAMMax I/OTransceiversPCIeCoreScore
XC7VX980TAMD Virtex-7612,000 LUT6979K LC3,60052.7 Mb90072 GTH 13.1 Gb/sGen33,040 haps_dx7
XC7VX1140TAMD Virtex-7712,000 LUT61139K LC3,36066.1 Mb1,10096 GTH 13.1 Gb/sGen3—
XC7VX690TAMD Virtex-7433,200 LUT6693K LC3,60051.7 Mb1,00080 GTH 13.1 Gb/sGen3—
GX 2100Altera Stratix 10 GX/SX679,680 ALMs2005K LE3,744127 Mb70496 XCVR/XCVR 28.3 Gb/sGen3—
GX 1650Altera Stratix 10 GX/SX550,540 ALMs1624K LE3,145114 Mb70496 XCVR/XCVR 28.3 Gb/sGen3—
GX 1100Altera Stratix 10 GX/SX449,280 ALMs1325K LE2,592107 Mb68848 XCVR/XCVR 28.3 Gb/sGen3—

Compare side by side: XCKU115 vs XC7VX980T, XCKU115 vs XC7VX1140T, XCKU115 vs XC7VX690T.

Compare the XCKU115 with up to three other FPGAs.

XCKU115 quick facts

How many LUTs does the XCKU115 have?

The XCKU115 has 663,360 LUT6 look-up tables (1,451,000 system logic cells as published by AMD). Logic block: 6-input look-up table, fracturable into two LUT5 with shared inputs.

How many DSP blocks does the XCKU115 have?

The XCKU115 has 5,520 DSP slices and 75.9 Mb of block RAM.

Does the XCKU115 have transceivers?

Yes, 64 GTH/GTY transceivers at up to 16.3 Gb/s.

What are the alternatives to the XCKU115?

Devices of similar size in other families include XC7VX980T (AMD Virtex-7), XC7VX1140T (AMD Virtex-7), XC7VX690T (AMD Virtex-7).

Which software is used to design with the XCKU115?

Designs for the XCKU115 are built with AMD Vivado.

Other Kintex UltraScale devices

DeviceLUTsVendor logicDSPBlock RAMMax I/OTransceiversPCIeCoreScore
XCKU025145,440 LUT6318K SLC1,15212.7 Mb31212 GTH/GTY 16.3 Gb/sGen3—
XCKU035203,128 LUT6444K SLC1,70019 Mb52016 GTH/GTY 16.3 Gb/sGen3—
XCKU040242,400 LUT6530K SLC1,92021.1 Mb52020 GTH/GTY 16.3 Gb/sGen31,024 hpc_ku
XCKU060331,680 LUT6726K SLC2,76038 Mb62432 GTH/GTY 16.3 Gb/sGen3—
XCKU085497,520 LUT61088K SLC4,10057 Mb67656 GTH/GTY 16.3 Gb/sGen3—
XCKU095537,600 LUT61176K SLC76859.1 Mb70264 GTH/GTY 16.3 Gb/sGen3—
XCKU115663,360 LUT61451K SLC5,52075.9 Mb83264 GTH/GTY 16.3 Gb/sGen3—

Source: AMD UltraScale FPGAs Product Selection Guide, XMP102 (v1.7). Data is extracted automatically from the vendor's selection guide; verify critical values in the device data sheet.