Lattice General Purpose FPGA

LFE5U-45F-6BG381C

44K-cell Lattice ECP5 general purpose FPGA in caBGA-381 with 1.9 Mb RAM and 72 multipliers for bridging, video and control.

The LFE5U-45F-6BG381C is a Lattice ECP5 general purpose FPGA with 44K logic cells, 1.9 Mb of embedded RAM and 72 sysDSP multipliers in a 381-ball caBGA package. ECP5 was optimized by Lattice for low cost, small form factor and low power, which makes it a practical way to add programmable connectivity or acceleration to a system built around an ASIC or ASSP without paying for more FPGA than the design needs. The 44K-cell fabric is large enough for video pipelines, protocol bridges, motor-control logic and modest DSP data paths, while the sysDSP blocks accelerate multipliers and filters. ECP5 supports dual-channel SerDes on the UM and UM5G versions for high-speed serial links, and the F suffix denotes an enhanced-feature device with a full I/O complement. The caBGA-381 package balances I/O count and board area, and the device configures from external SPI flash for fast, repeatable boot. ECP5 is also offered in an automotive variant with AEC-Q100 qualification. Every device is factory-traceable and ships with import declaration, certificate of origin and RoHS documentation. Designers should plan the configuration scheme, the I/O standards and the power rails before layout. BeiLuo holds this part in regional stock and our FAE team supports selection, configuration and I/O timing.

FAE Professional Review

The LFE5U-45F-6BG381C is the ECP5 density we see most in bridging and control designs. 44K cells and 72 multipliers cover a lot of glue, video and DSP work, and the package is easy to route. Plan the SPI flash and the power rails early and this device is very predictable to bring up.
ParameterValue
SeriesECP5
Logic Cells44K
Embedded RAM1944 Kb
Multipliers72
PackagecaBGA-381
Temperature-40 C to +100 C

Application Circuits

Application

Protocol bridging

Reference circuits and application schematics for Protocol bridging are available from our FAE team.

Application

Video pipeline glue

Reference circuits and application schematics for Video pipeline glue are available from our FAE team.

Application

Industrial control logic

Reference circuits and application schematics for Industrial control logic are available from our FAE team.

Need a reference schematic or design review? Our FAE engineers can share verified circuits and layout guidance for this part.

Related Documents

  • Manufacturer Datasheet - LFE5U-45F-6BG381C Download
  • Import Declaration - LFE5U-45F-6BG381C Download
  • Certificate of Origin Download
  • RoHS Compliance Download

Alternative Part Numbers

ModelPackageNoteAction
LFD2NX-40-8BG256C caBGA-256 Certus-NX with hardened PCIe, GigE and DDR3 View

Complementary Part Numbers

ModelPackageNoteAction
iCE40UP5K-SG48I QFN-48 Always-on companion for low-power sensing View
LCMXO3LF-6900C-5BG256C caBGA-256 Instant-on glue logic and sequencing View

Frequently Asked Questions

What projects suit the LFE5U-45F-6BG381C?

It fits designs that need 44K cells of programmable logic for bridging, video glue or control, where an ASIC would be too rigid and a larger FPGA too costly. The 72 multipliers cover modest DSP data paths.

For hardened high-speed interfaces, consider the Certus-NX alternative.

Request this device for your project

How do I configure an ECP5 device?

ECP5 configures from an external SPI flash at power-up, and you can program the flash through JTAG on the board. Use the sysCONFIG settings in the Lattice toolchain and verify the configuration time against your system boot requirement.

Our FAE team can review your configuration scheme.

Read the Lattice FPGA selection guide

Is the part genuine and documented?

BeiLuo supplies factory-traceable LFE5U-45F-6BG381C devices through Lattice's authorized channel, with import declaration, certificate of origin and RoHS files on every order. Stock is normally available.

Order a sample to validate before production.

Request stock, sample or a quote