An lku file extension is related to the ST Microelectronics executable format.
LKU file extension - ST Microelectronics linked unit data
What is lku file? How to open lku files?
File type specification:
The lku file extension is associated with the linked unit an executable file format developed by ST Microelectronics.
The ST Microelectronics executable file format (linked unit) seems to be obsolete product.
This lku file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.