Semiconductor device and method of controlling non-volatile memory device

A semiconductor device comprising:

• a non-volatile memory device;
• and
• a control circuit device that carries out access to the non-volatile memory device,
• wherein the control circuit device carries out, with respect to a first write request from outside including a first address serving as a first-type address and first data, control of allocating a second address serving as a second-type address of the non-volatile memory device to the first-type address independently from the first-type address,
• wherein a fourth address serving as the second-type address for a third address serving as the first-type address contained in a second write request input to the control circuit device from outside is allocated during a first writing operation of the first data to the second address of the non-volatile memory device,
• wherein the control circuit device is provided with a first table which stores management information including the second-type address,
• wherein the control circuit device initializes contents of the management information in the first table of the control circuit device after power-on at a start of use or activation,
• wherein the control circuit device stores the management information in the first table into the non-volatile memory device before power-off at an end of activation, and
• wherein the control circuit device reads the management information stored in the non-volatile memory device after power-on at activation and starts the control from a state continued from previous time.