The experimental data on the proton elastic and inelastic scattering at energies 200-1000 MeV on the nuclei 28Si, 40Ca, 58Ni and 208Pb are investigated using the microscopic optical potential model. Such potential is based on the proton-nucleon amplitude of scattering on the bounded nuclear nucleons. The obtained parameters of the amplitude are compared with those known from analysis of the proton scattering on the free unbounded nucleons.