LFE5UM-85F-8BG554C

LFE5UM-85F-8BG554C is an ECP5 FPGA from Lattice Semiconductor in a 554-ball caBGA package — the 85F density of the family with 84K LUTs and on-chip SERDES, in the fastest -8 speed grade and the commercial temperature grade. The UM variant is the SERDES member of ECP5: it suits PCIe, Ethernet and display bridging where the logic-only LFE5U codes cannot close the link, at a cost point below premium transceiver FPGA families. Selection advice: the BG554 package and -8 speed grade must match your timing closure and layout, because ECP5 devices are not interchangeable across packages; designs that only need logic should stay on the LFE5U-85F codes rather than paying for SERDES they will not use. Confirm your transceiver protocol and LUT utilisation against the ECP5 datasheet ordering table before committing. Lattice lists ECP5 as a current production family. Parameters verified against Lattice Semiconductor documentation.