a storage control apparatus for controlling memory elements having a data hold mode is provided with a switching circuit for switching a first voltage for a normal operation mode and a second voltage for the data hold mode as a power supply voltage applied to the memory elements , and a control circuit for controlling the switching operation of the switching circuit in accordance with accessing conditions of the memory elements . the control circuit is adapted to monitor accessing conditions of the respective memory elements and control the switching circuit to set all or a part of the memory elements except for accessed memory elements in the data hold mode .