  We propose a model that explains the fermion mass hierarchy by the
Froggatt-Nielsen mechanism with a discrete $Z_N^F$ symmetry. As a concrete
model, we study a supersymmetric model with a single flavon coupled to the
minimal supersymmetric Standard Model. Flavon develops a TeV scale vacuum
expectation value for realizing flavor hierarchy, an appropriate $\mu$-term and
the electroweak scale, hence the model has a low cutoff scale. We demonstrate
how the flavon is successfully stabilized together with the Higgs bosons in the
model. The discrete flavor symmetry $Z_N^F$ controls not only the Standard
Model fermion masses, but also the Higgs potential and a mass of the Higgsino
which is a good candidate for dark matter. The hierarchy in the Higgs-flavon
sector is determined in order to make the model anomaly-free and realize a
stable electroweak vacuum. We show that this model can explain the fermion mass
hierarchy, realistic Higgs-flavon potential and thermally produced dark matter
at the same time. We discuss flavor violating processes induced by the light
flavon which would be detected in future experiments.
