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Lattice Semiconductor Corporation LFE5U-12F-6BG381I — FPGA / CPLD & Programmable Logic

Lattice LFE5U-12F-6BG381I ECP5 FPGA, 12K LUTs, 197 I/O

MPNLFE5U-12F-6BG381I
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Lattice Semiconductor ECP5 FPGA, LFE5U-12F-6BG381I, 12000 logic cells, 197 I/O, 589824 total RAM bits, 1.045V-1.155V core, -40°C to 100°C, 381-CABGA (17x17 mm), Tray.

$21.1000Ref. price · indicative, final on quote
Lattice Semiconductor Corporation LFE5U-12F-6BG381I datasheet (PDF)
Packaging381-FBGA
RoHSROHS3 Compliant
SeriesECP5
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LFE5U-12F-6BG381I specifications
ParameterValue
SeriesECP5
MountingSurface Mount
Supply voltage1.045V ~ 1.155V
Operating temperature-40°C ~ 100°C (TJ)
PackageTray
Number of i (O)197
Case381-FBGA
Total RAM bits589824
Number of LABs (CLBs)3000
Number of logic elements (Cells)12000

Product details

12K LUTs in a 17x17 mm BGA — what the logic density buys you

The LFE5U-12F-6BG381I is a mid-density ECP5 FPGA from Lattice Semiconductor, packing 12,000 logic cells (3000 LABs/CLBs) and 589,824 bits of block RAM into a 381-ball CABGA package that measures 17x17 mm. The 197 user I/O give you enough pins to route a parallel display bus, a DDR memory interface, and a handful of serial peripherals without multiplexing — useful when the board area is tight but the pin count still needs to breathe.

Industrial temperature grade and single-rail core

The core supply is a single 1.045-1.155 V rail, so you only need one clean 1.1 V regulator for the FPGA fabric, not a multi-rail sequencing headache.

Frequently asked questions

What is the difference between LFE5U-12F-6BG381I and LFE5U-12F-8BG381I?

Both share the same 381-ball CABGA package, 12,000 logic cells, and 197 I/O. The -8BG381I carries a faster speed grade (-8 vs -6), which translates to tighter timing closure on the same design — if your design already meets timing on the -6, the -8 buys you margin; if you are pushing the fabric near its limit, the -8 may save a respin.

Will LFE5U-12F-6BG381I drop into a board designed for LFE5U-12F-6BG256I?

No — the 381I uses a 381-ball CABGA (17x17 mm), while the 256I uses a 256-ball CABGA (14x14 mm). The ball pitch, footprint, and PCB layout are different. The logic fabric and I/O count are identical, but the board must be laid out for the larger package.