Inasmuch as tradition figured about 12 generations from Moses to Solomon, the reference to 480 years is most likely an editorial comment allowing 40 years for each generation.
Since an actual generation was nearer 25 years, the most probable date for the Exodus is about 1290 BCE. If this is true, then the oppressive pharaoh noted in Exodus (1:2–2:23) was Seti I (reigned 1318–04), and the pharaoh during the Exodus was Ramses II (c. 1304–c. 1237). In short, Moses was probably born in the late 14th century BCE.