XC7K420T

AMDKintex-7

The XC7K420T is a Kintex-7 FPGA from AMD, built on a 28 nm process. It provides 260,600 LUT6 look-up tables (416,960 logic cells), 521,200 flip-flops, 29.4 Mb of block RAM and 1,680 DSP slices. It offers up to 400 user I/O pins and 32 GTX transceivers at up to 12.5 Gb/s, with hard PCI Express Gen2 blocks. It is available in 2 packages, from the FFG901 (31 × 31 mm) to the FFG1156 (35 × 35 mm). Temperature grades: commercial, extended, industrial. Designs are built with AMD Vivado.

417KLUT4-equivalent

261KLUTs (LUT6)

1,680DSP slices

29.4 MbBlock RAM

400Max. user I/O

32Transceivers (12.5 Gb/s)

Specifications

Vendor	AMD
Family	Kintex-7
Series	7 Series
Process	28 nm
Configuration memory	SRAM
LUT4-equivalent capacity	416,960
Look-up tables (LUT6)	260,600
Logic cells	416,960
Flip-flops	521,200
Distributed RAM	5,938 Kb
Block RAM	29.4 Mb (835 × 36 Kb)
DSP (DSP slice)	1,680
Clock management tiles	8

Max. user I/O	400
Differential pairs	192
GTX transceivers	32 × 12.5 Gb/s
PCI Express	Gen2
Analog / monitor	XADC
Design tool	AMD Vivado

Packages

Package	Size (mm)	Pitch (mm)	User I/O	Transceivers
FFG901	31 × 31	1.0	380	28
FFG1156	35 × 35	1.0	400	32

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 grade	Junction range	Speed grades
Commercial (C)	0 to 85 °C	-1, -2
Extended (E)	0 to 100 °C	-2L, -3
Industrial (I)	−40 to 100 °C	-1, -2, -2L

Alternatives to the XC7K420T

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

Device	LUT4-eq.	Vendor logic	DSP	Block RAM	Max I/O	Transceivers	PCIe
10AX048Altera Arria 10	364K 182K ALMs	629K LE	1,368	28.1 Mb	492	36 XCVR 17.4 Gb/s	Gen3
LAV-AT-G70Lattice Avant-G	397K 397K LUT4	637K LC	1,800	35.6 Mb	554	28 SERDES 12.5 Gb/s	—
LAV-AT-X70Lattice Avant-X	397K 397K LUT4	637K LC	1,800	35.6 Mb	554	28 SERDES 25 Gb/s	—
MPF500TMicrochip PolarFire	481K 481K LUT4	481K LE	1,480	29.7 Mb	584	24 SERDES 12.7 Gb/s	Gen2
XC7VX415TAMD Virtex-7	412K 258K LUT6	412K LC	2,160	30.9 Mb	600	48 GTH 13.1 Gb/s	Gen3
XCKU9PAMD Kintex UltraScale+	438K 274K LUT6	600K SLC	2,520	32.1 Mb	304	28 GTH 16.3 Gb/s	—

Compare side by side: XC7K420T vs 10AX048, XC7K420T vs LAV-AT-G70, XC7K420T vs LAV-AT-X70, XC7K420T vs XCKU9P.

XC7K420T quick facts

How many LUTs does the XC7K420T have?

The XC7K420T has 260,600 LUT6 look-up tables, about 416,960 LUT4 equivalents (416,960 logic cells as published by AMD).

How many DSP blocks does the XC7K420T have?

The XC7K420T has 1,680 DSP slices and 29.4 Mb of block RAM.

Does the XC7K420T have transceivers?

Yes, 32 GTX transceivers at up to 12.5 Gb/s.

What are the alternatives to the XC7K420T?

Devices of similar size in other families include 10AX048 (Altera Arria 10), LAV-AT-G70 (Lattice Avant-G), LAV-AT-X70 (Lattice Avant-X).

Which software is used to design with the XC7K420T?

Designs for the XC7K420T are built with AMD Vivado.

Other Kintex-7 devices

Device	LUT4-eq.	Vendor logic	DSP	Block RAM	Max I/O	Transceivers	PCIe
XC7K70T	65.6K 41K LUT6	65.6K LC	240	4.7 Mb	300	8 GTX 12.5 Gb/s	Gen2
XC7K160T	162K 101K LUT6	162K LC	600	11.4 Mb	400	8 GTX 12.5 Gb/s	Gen2
XC7K325T	326K 204K LUT6	326K LC	840	15.6 Mb	500	16 GTX 12.5 Gb/s	Gen2
XC7K355T	356K 223K LUT6	356K LC	1,440	25.1 Mb	300	24 GTX 12.5 Gb/s	Gen2
XC7K410T	407K 254K LUT6	407K LC	1,540	27.9 Mb	500	16 GTX 12.5 Gb/s	Gen2
XC7K420T	417K 261K LUT6	417K LC	1,680	29.4 Mb	400	32 GTX 12.5 Gb/s	Gen2
XC7K480T	478K 299K LUT6	478K LC	1,920	33.6 Mb	400	32 GTX 12.5 Gb/s	Gen2

Source: AMD 7 Series FPGAs Product Selection Guide, XMP101 (v1.8). Data is extracted automatically from the vendor's selection guide; verify critical values in the device data sheet.