An enzyme that catalyzes the conversion of L-aspartate 4-semialdehyde, orthophosphate, and NADP+ to yield L-4-aspartyl phosphate and NADPH. EC 1.2.1.11.

Synonyms: Dehydrogenase, Aspartate-Semialdehyde, Aspartate-Semialdehyde Dehydrogenase, Aspartate Semialdehyde Dehydrogenase, Semiaspartate Aldehyde Dehydrogenase, EC 1.2.1.11, L-Aspartate-4-semialdehyde:NADP+ oxidoreductase (phosphorylating), Aldehyde Dehydrogenase, Semiaspartate, Dehydrogenase, Semiaspartate Aldehyde